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-rw-r--r--key.c2803
1 files changed, 289 insertions, 2514 deletions
diff --git a/key.c b/key.c
index e8fc5b1b..75327d49 100644
--- a/key.c
+++ b/key.c
@@ -1,2694 +1,469 @@
-/* $OpenBSD: key.c,v 1.117 2014/04/29 18:01:49 markus Exp $ */
+/* $OpenBSD: key.c,v 1.119 2014/06/30 12:54:39 djm Exp $ */
/*
- * read_bignum():
- * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
- *
- * As far as I am concerned, the code I have written for this software
- * can be used freely for any purpose. Any derived versions of this
- * software must be clearly marked as such, and if the derived work is
- * incompatible with the protocol description in the RFC file, it must be
- * called by a name other than "ssh" or "Secure Shell".
- *
- *
- * Copyright (c) 2000, 2001 Markus Friedl. All rights reserved.
- * Copyright (c) 2008 Alexander von Gernler. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * placed in the public domain
*/
#include "includes.h"
#include <sys/param.h>
#include <sys/types.h>
-
-#include "crypto_api.h"
-
-#include <openssl/evp.h>
-#include <openbsd-compat/openssl-compat.h>
-
+#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
-#include <string.h>
-#include "xmalloc.h"
+#define SSH_KEY_NO_DEFINE
#include "key.h"
-#include "rsa.h"
-#include "uuencode.h"
-#include "buffer.h"
-#include "log.h"
-#include "misc.h"
-#include "ssh2.h"
-#include "digest.h"
-
-static int to_blob(const Key *, u_char **, u_int *, int);
-static Key *key_from_blob2(const u_char *, u_int, int);
-
-static struct KeyCert *
-cert_new(void)
-{
- struct KeyCert *cert;
-
- cert = xcalloc(1, sizeof(*cert));
- buffer_init(&cert->certblob);
- buffer_init(&cert->critical);
- buffer_init(&cert->extensions);
- cert->key_id = NULL;
- cert->principals = NULL;
- cert->signature_key = NULL;
- return cert;
-}
-
-Key *
-key_new(int type)
-{
- Key *k;
-#ifdef WITH_OPENSSL
- RSA *rsa;
- DSA *dsa;
-#endif
-
- k = xcalloc(1, sizeof(*k));
- k->type = type;
- k->ecdsa = NULL;
- k->ecdsa_nid = -1;
- k->dsa = NULL;
- k->rsa = NULL;
- k->cert = NULL;
- k->ed25519_sk = NULL;
- k->ed25519_pk = NULL;
- switch (k->type) {
-#ifdef WITH_OPENSSL
- case KEY_RSA1:
- case KEY_RSA:
- case KEY_RSA_CERT_V00:
- case KEY_RSA_CERT:
- if ((rsa = RSA_new()) == NULL)
- fatal("key_new: RSA_new failed");
- if ((rsa->n = BN_new()) == NULL)
- fatal("key_new: BN_new failed");
- if ((rsa->e = BN_new()) == NULL)
- fatal("key_new: BN_new failed");
- k->rsa = rsa;
- break;
- case KEY_DSA:
- case KEY_DSA_CERT_V00:
- case KEY_DSA_CERT:
- if ((dsa = DSA_new()) == NULL)
- fatal("key_new: DSA_new failed");
- if ((dsa->p = BN_new()) == NULL)
- fatal("key_new: BN_new failed");
- if ((dsa->q = BN_new()) == NULL)
- fatal("key_new: BN_new failed");
- if ((dsa->g = BN_new()) == NULL)
- fatal("key_new: BN_new failed");
- if ((dsa->pub_key = BN_new()) == NULL)
- fatal("key_new: BN_new failed");
- k->dsa = dsa;
- break;
-#ifdef OPENSSL_HAS_ECC
- case KEY_ECDSA:
- case KEY_ECDSA_CERT:
- /* Cannot do anything until we know the group */
- break;
-#endif
-#endif
- case KEY_ED25519:
- case KEY_ED25519_CERT:
- /* no need to prealloc */
- break;
- case KEY_UNSPEC:
- break;
- default:
- fatal("key_new: bad key type %d", k->type);
- break;
- }
-
- if (key_is_cert(k))
- k->cert = cert_new();
- return k;
-}
+#include "compat.h"
+#include "sshkey.h"
+#include "ssherr.h"
+#include "log.h"
+#include "authfile.h"
void
key_add_private(Key *k)
{
- switch (k->type) {
-#ifdef WITH_OPENSSL
- case KEY_RSA1:
- case KEY_RSA:
- case KEY_RSA_CERT_V00:
- case KEY_RSA_CERT:
- if ((k->rsa->d = BN_new()) == NULL)
- fatal("key_new_private: BN_new failed");
- if ((k->rsa->iqmp = BN_new()) == NULL)
- fatal("key_new_private: BN_new failed");
- if ((k->rsa->q = BN_new()) == NULL)
- fatal("key_new_private: BN_new failed");
- if ((k->rsa->p = BN_new()) == NULL)
- fatal("key_new_private: BN_new failed");
- if ((k->rsa->dmq1 = BN_new()) == NULL)
- fatal("key_new_private: BN_new failed");
- if ((k->rsa->dmp1 = BN_new()) == NULL)
- fatal("key_new_private: BN_new failed");
- break;
- case KEY_DSA:
- case KEY_DSA_CERT_V00:
- case KEY_DSA_CERT:
- if ((k->dsa->priv_key = BN_new()) == NULL)
- fatal("key_new_private: BN_new failed");
- break;
- case KEY_ECDSA:
- case KEY_ECDSA_CERT:
- /* Cannot do anything until we know the group */
- break;
-#endif
- case KEY_ED25519:
- case KEY_ED25519_CERT:
- /* no need to prealloc */
- break;
- case KEY_UNSPEC:
- break;
- default:
- break;
- }
+ int r;
+
+ if ((r = sshkey_add_private(k)) != 0)
+ fatal("%s: %s", __func__, ssh_err(r));
}
Key *
key_new_private(int type)
{
- Key *k = key_new(type);
-
- key_add_private(k);
- return k;
-}
-
-static void
-cert_free(struct KeyCert *cert)
-{
- u_int i;
-
- buffer_free(&cert->certblob);
- buffer_free(&cert->critical);
- buffer_free(&cert->extensions);
- free(cert->key_id);
- for (i = 0; i < cert->nprincipals; i++)
- free(cert->principals[i]);
- free(cert->principals);
- if (cert->signature_key != NULL)
- key_free(cert->signature_key);
- free(cert);
-}
-
-void
-key_free(Key *k)
-{
- if (k == NULL)
- fatal("key_free: key is NULL");
- switch (k->type) {
-#ifdef WITH_OPENSSL
- case KEY_RSA1:
- case KEY_RSA:
- case KEY_RSA_CERT_V00:
- case KEY_RSA_CERT:
- if (k->rsa != NULL)
- RSA_free(k->rsa);
- k->rsa = NULL;
- break;
- case KEY_DSA:
- case KEY_DSA_CERT_V00:
- case KEY_DSA_CERT:
- if (k->dsa != NULL)
- DSA_free(k->dsa);
- k->dsa = NULL;
- break;
-#ifdef OPENSSL_HAS_ECC
- case KEY_ECDSA:
- case KEY_ECDSA_CERT:
- if (k->ecdsa != NULL)
- EC_KEY_free(k->ecdsa);
- k->ecdsa = NULL;
- break;
-#endif
- case KEY_ED25519:
- case KEY_ED25519_CERT:
- if (k->ed25519_pk) {
- explicit_bzero(k->ed25519_pk, ED25519_PK_SZ);
- free(k->ed25519_pk);
- k->ed25519_pk = NULL;
- }
- if (k->ed25519_sk) {
- explicit_bzero(k->ed25519_sk, ED25519_SK_SZ);
- free(k->ed25519_sk);
- k->ed25519_sk = NULL;
- }
- break;
- case KEY_UNSPEC:
- break;
- default:
- fatal("key_free: bad key type %d", k->type);
- break;
- }
- if (key_is_cert(k)) {
- if (k->cert != NULL)
- cert_free(k->cert);
- k->cert = NULL;
- }
-
- free(k);
-}
-
-static int
-cert_compare(struct KeyCert *a, struct KeyCert *b)
-{
- if (a == NULL && b == NULL)
- return 1;
- if (a == NULL || b == NULL)
- return 0;
- if (buffer_len(&a->certblob) != buffer_len(&b->certblob))
- return 0;
- if (timingsafe_bcmp(buffer_ptr(&a->certblob), buffer_ptr(&b->certblob),
- buffer_len(&a->certblob)) != 0)
- return 0;
- return 1;
-}
-
-/*
- * Compare public portions of key only, allowing comparisons between
- * certificates and plain keys too.
- */
-int
-key_equal_public(const Key *a, const Key *b)
-{
-#if defined(WITH_OPENSSL) && defined(OPENSSL_HAS_ECC)
- BN_CTX *bnctx;
-#endif
-
- if (a == NULL || b == NULL ||
- key_type_plain(a->type) != key_type_plain(b->type))
- return 0;
-
- switch (a->type) {
-#ifdef WITH_OPENSSL
- case KEY_RSA1:
- case KEY_RSA_CERT_V00:
- case KEY_RSA_CERT:
- case KEY_RSA:
- return a->rsa != NULL && b->rsa != NULL &&
- BN_cmp(a->rsa->e, b->rsa->e) == 0 &&
- BN_cmp(a->rsa->n, b->rsa->n) == 0;
- case KEY_DSA_CERT_V00:
- case KEY_DSA_CERT:
- case KEY_DSA:
- return a->dsa != NULL && b->dsa != NULL &&
- BN_cmp(a->dsa->p, b->dsa->p) == 0 &&
- BN_cmp(a->dsa->q, b->dsa->q) == 0 &&
- BN_cmp(a->dsa->g, b->dsa->g) == 0 &&
- BN_cmp(a->dsa->pub_key, b->dsa->pub_key) == 0;
-#ifdef OPENSSL_HAS_ECC
- case KEY_ECDSA_CERT:
- case KEY_ECDSA:
- if (a->ecdsa == NULL || b->ecdsa == NULL ||
- EC_KEY_get0_public_key(a->ecdsa) == NULL ||
- EC_KEY_get0_public_key(b->ecdsa) == NULL)
- return 0;
- if ((bnctx = BN_CTX_new()) == NULL)
- fatal("%s: BN_CTX_new failed", __func__);
- if (EC_GROUP_cmp(EC_KEY_get0_group(a->ecdsa),
- EC_KEY_get0_group(b->ecdsa), bnctx) != 0 ||
- EC_POINT_cmp(EC_KEY_get0_group(a->ecdsa),
- EC_KEY_get0_public_key(a->ecdsa),
- EC_KEY_get0_public_key(b->ecdsa), bnctx) != 0) {
- BN_CTX_free(bnctx);
- return 0;
- }
- BN_CTX_free(bnctx);
- return 1;
-#endif /* OPENSSL_HAS_ECC */
-#endif /* WITH_OPENSSL */
- case KEY_ED25519:
- case KEY_ED25519_CERT:
- return a->ed25519_pk != NULL && b->ed25519_pk != NULL &&
- memcmp(a->ed25519_pk, b->ed25519_pk, ED25519_PK_SZ) == 0;
- default:
- fatal("key_equal: bad key type %d", a->type);
- }
- /* NOTREACHED */
-}
+ Key *ret = NULL;
-int
-key_equal(const Key *a, const Key *b)
-{
- if (a == NULL || b == NULL || a->type != b->type)
- return 0;
- if (key_is_cert(a)) {
- if (!cert_compare(a->cert, b->cert))
- return 0;
- }
- return key_equal_public(a, b);
+ if ((ret = sshkey_new_private(type)) == NULL)
+ fatal("%s: failed", __func__);
+ return ret;
}
u_char*
key_fingerprint_raw(const Key *k, enum fp_type dgst_type,
u_int *dgst_raw_length)
{
- u_char *blob = NULL;
- u_char *retval = NULL;
- u_int len = 0;
- int hash_alg = -1;
-#ifdef WITH_OPENSSL
- int nlen, elen;
-#endif
-
- *dgst_raw_length = 0;
-
- /* XXX switch to DIGEST_* directly? */
- switch (dgst_type) {
- case SSH_FP_MD5:
- hash_alg = SSH_DIGEST_MD5;
- break;
- case SSH_FP_SHA1:
- hash_alg = SSH_DIGEST_SHA1;
- break;
- case SSH_FP_SHA256:
- hash_alg = SSH_DIGEST_SHA256;
- break;
- default:
- fatal("%s: bad digest type %d", __func__, dgst_type);
- }
- switch (k->type) {
-#ifdef WITH_OPENSSL
- case KEY_RSA1:
- nlen = BN_num_bytes(k->rsa->n);
- elen = BN_num_bytes(k->rsa->e);
- len = nlen + elen;
- blob = xmalloc(len);
- BN_bn2bin(k->rsa->n, blob);
- BN_bn2bin(k->rsa->e, blob + nlen);
- break;
- case KEY_DSA:
- case KEY_ECDSA:
- case KEY_RSA:
-#endif
- case KEY_ED25519:
- key_to_blob(k, &blob, &len);
- break;
-#ifdef WITH_OPENSSL
- case KEY_DSA_CERT_V00:
- case KEY_RSA_CERT_V00:
- case KEY_DSA_CERT:
- case KEY_ECDSA_CERT:
- case KEY_RSA_CERT:
-#endif
- case KEY_ED25519_CERT:
- /* We want a fingerprint of the _key_ not of the cert */
- to_blob(k, &blob, &len, 1);
- break;
- case KEY_UNSPEC:
- return retval;
- default:
- fatal("%s: bad key type %d", __func__, k->type);
- break;
- }
- if (blob != NULL) {
- retval = xmalloc(SSH_DIGEST_MAX_LENGTH);
- if ((ssh_digest_memory(hash_alg, blob, len,
- retval, SSH_DIGEST_MAX_LENGTH)) != 0)
- fatal("%s: digest_memory failed", __func__);
- explicit_bzero(blob, len);
- free(blob);
- *dgst_raw_length = ssh_digest_bytes(hash_alg);
- } else {
- fatal("%s: blob is null", __func__);
- }
- return retval;
-}
-
-static char *
-key_fingerprint_hex(u_char *dgst_raw, u_int dgst_raw_len)
-{
- char *retval;
- u_int i;
-
- retval = xcalloc(1, dgst_raw_len * 3 + 1);
- for (i = 0; i < dgst_raw_len; i++) {
- char hex[4];
- snprintf(hex, sizeof(hex), "%02x:", dgst_raw[i]);
- strlcat(retval, hex, dgst_raw_len * 3 + 1);
- }
-
- /* Remove the trailing ':' character */
- retval[(dgst_raw_len * 3) - 1] = '\0';
- return retval;
-}
-
-static char *
-key_fingerprint_bubblebabble(u_char *dgst_raw, u_int dgst_raw_len)
-{
- char vowels[] = { 'a', 'e', 'i', 'o', 'u', 'y' };
- char consonants[] = { 'b', 'c', 'd', 'f', 'g', 'h', 'k', 'l', 'm',
- 'n', 'p', 'r', 's', 't', 'v', 'z', 'x' };
- u_int i, j = 0, rounds, seed = 1;
- char *retval;
-
- rounds = (dgst_raw_len / 2) + 1;
- retval = xcalloc((rounds * 6), sizeof(char));
- retval[j++] = 'x';
- for (i = 0; i < rounds; i++) {
- u_int idx0, idx1, idx2, idx3, idx4;
- if ((i + 1 < rounds) || (dgst_raw_len % 2 != 0)) {
- idx0 = (((((u_int)(dgst_raw[2 * i])) >> 6) & 3) +
- seed) % 6;
- idx1 = (((u_int)(dgst_raw[2 * i])) >> 2) & 15;
- idx2 = ((((u_int)(dgst_raw[2 * i])) & 3) +
- (seed / 6)) % 6;
- retval[j++] = vowels[idx0];
- retval[j++] = consonants[idx1];
- retval[j++] = vowels[idx2];
- if ((i + 1) < rounds) {
- idx3 = (((u_int)(dgst_raw[(2 * i) + 1])) >> 4) & 15;
- idx4 = (((u_int)(dgst_raw[(2 * i) + 1]))) & 15;
- retval[j++] = consonants[idx3];
- retval[j++] = '-';
- retval[j++] = consonants[idx4];
- seed = ((seed * 5) +
- ((((u_int)(dgst_raw[2 * i])) * 7) +
- ((u_int)(dgst_raw[(2 * i) + 1])))) % 36;
- }
- } else {
- idx0 = seed % 6;
- idx1 = 16;
- idx2 = seed / 6;
- retval[j++] = vowels[idx0];
- retval[j++] = consonants[idx1];
- retval[j++] = vowels[idx2];
- }
- }
- retval[j++] = 'x';
- retval[j++] = '\0';
- return retval;
-}
-
-/*
- * Draw an ASCII-Art representing the fingerprint so human brain can
- * profit from its built-in pattern recognition ability.
- * This technique is called "random art" and can be found in some
- * scientific publications like this original paper:
- *
- * "Hash Visualization: a New Technique to improve Real-World Security",
- * Perrig A. and Song D., 1999, International Workshop on Cryptographic
- * Techniques and E-Commerce (CrypTEC '99)
- * sparrow.ece.cmu.edu/~adrian/projects/validation/validation.pdf
- *
- * The subject came up in a talk by Dan Kaminsky, too.
- *
- * If you see the picture is different, the key is different.
- * If the picture looks the same, you still know nothing.
- *
- * The algorithm used here is a worm crawling over a discrete plane,
- * leaving a trace (augmenting the field) everywhere it goes.
- * Movement is taken from dgst_raw 2bit-wise. Bumping into walls
- * makes the respective movement vector be ignored for this turn.
- * Graphs are not unambiguous, because circles in graphs can be
- * walked in either direction.
- */
-
-/*
- * Field sizes for the random art. Have to be odd, so the starting point
- * can be in the exact middle of the picture, and FLDBASE should be >=8 .
- * Else pictures would be too dense, and drawing the frame would
- * fail, too, because the key type would not fit in anymore.
- */
-#define FLDBASE 8
-#define FLDSIZE_Y (FLDBASE + 1)
-#define FLDSIZE_X (FLDBASE * 2 + 1)
-static char *
-key_fingerprint_randomart(u_char *dgst_raw, u_int dgst_raw_len, const Key *k)
-{
- /*
- * Chars to be used after each other every time the worm
- * intersects with itself. Matter of taste.
- */
- char *augmentation_string = " .o+=*BOX@%&#/^SE";
- char *retval, *p;
- u_char field[FLDSIZE_X][FLDSIZE_Y];
- u_int i, b;
- int x, y;
- size_t len = strlen(augmentation_string) - 1;
-
- retval = xcalloc(1, (FLDSIZE_X + 3) * (FLDSIZE_Y + 2));
-
- /* initialize field */
- memset(field, 0, FLDSIZE_X * FLDSIZE_Y * sizeof(char));
- x = FLDSIZE_X / 2;
- y = FLDSIZE_Y / 2;
-
- /* process raw key */
- for (i = 0; i < dgst_raw_len; i++) {
- int input;
- /* each byte conveys four 2-bit move commands */
- input = dgst_raw[i];
- for (b = 0; b < 4; b++) {
- /* evaluate 2 bit, rest is shifted later */
- x += (input & 0x1) ? 1 : -1;
- y += (input & 0x2) ? 1 : -1;
-
- /* assure we are still in bounds */
- x = MAX(x, 0);
- y = MAX(y, 0);
- x = MIN(x, FLDSIZE_X - 1);
- y = MIN(y, FLDSIZE_Y - 1);
-
- /* augment the field */
- if (field[x][y] < len - 2)
- field[x][y]++;
- input = input >> 2;
- }
- }
-
- /* mark starting point and end point*/
- field[FLDSIZE_X / 2][FLDSIZE_Y / 2] = len - 1;
- field[x][y] = len;
-
- /* fill in retval */
- snprintf(retval, FLDSIZE_X, "+--[%4s %4u]", key_type(k), key_size(k));
- p = strchr(retval, '\0');
-
- /* output upper border */
- for (i = p - retval - 1; i < FLDSIZE_X; i++)
- *p++ = '-';
- *p++ = '+';
- *p++ = '\n';
-
- /* output content */
- for (y = 0; y < FLDSIZE_Y; y++) {
- *p++ = '|';
- for (x = 0; x < FLDSIZE_X; x++)
- *p++ = augmentation_string[MIN(field[x][y], len)];
- *p++ = '|';
- *p++ = '\n';
- }
-
- /* output lower border */
- *p++ = '+';
- for (i = 0; i < FLDSIZE_X; i++)
- *p++ = '-';
- *p++ = '+';
-
- return retval;
-}
-
-char *
-key_fingerprint(const Key *k, enum fp_type dgst_type, enum fp_rep dgst_rep)
-{
- char *retval = NULL;
- u_char *dgst_raw;
- u_int dgst_raw_len;
-
- dgst_raw = key_fingerprint_raw(k, dgst_type, &dgst_raw_len);
- if (!dgst_raw)
- fatal("key_fingerprint: null from key_fingerprint_raw()");
- switch (dgst_rep) {
- case SSH_FP_HEX:
- retval = key_fingerprint_hex(dgst_raw, dgst_raw_len);
- break;
- case SSH_FP_BUBBLEBABBLE:
- retval = key_fingerprint_bubblebabble(dgst_raw, dgst_raw_len);
- break;
- case SSH_FP_RANDOMART:
- retval = key_fingerprint_randomart(dgst_raw, dgst_raw_len, k);
- break;
- default:
- fatal("key_fingerprint: bad digest representation %d",
- dgst_rep);
- break;
- }
- explicit_bzero(dgst_raw, dgst_raw_len);
- free(dgst_raw);
- return retval;
-}
-
-#ifdef WITH_SSH1
-/*
- * Reads a multiple-precision integer in decimal from the buffer, and advances
- * the pointer. The integer must already be initialized. This function is
- * permitted to modify the buffer. This leaves *cpp to point just beyond the
- * last processed (and maybe modified) character. Note that this may modify
- * the buffer containing the number.
- */
-static int
-read_bignum(char **cpp, BIGNUM * value)
-{
- char *cp = *cpp;
- int old;
-
- /* Skip any leading whitespace. */
- for (; *cp == ' ' || *cp == '\t'; cp++)
- ;
-
- /* Check that it begins with a decimal digit. */
- if (*cp < '0' || *cp > '9')
- return 0;
-
- /* Save starting position. */
- *cpp = cp;
-
- /* Move forward until all decimal digits skipped. */
- for (; *cp >= '0' && *cp <= '9'; cp++)
- ;
-
- /* Save the old terminating character, and replace it by \0. */
- old = *cp;
- *cp = 0;
-
- /* Parse the number. */
- if (BN_dec2bn(&value, *cpp) == 0)
- return 0;
-
- /* Restore old terminating character. */
- *cp = old;
-
- /* Move beyond the number and return success. */
- *cpp = cp;
- return 1;
-}
-
-static int
-write_bignum(FILE *f, BIGNUM *num)
-{
- char *buf = BN_bn2dec(num);
- if (buf == NULL) {
- error("write_bignum: BN_bn2dec() failed");
- return 0;
- }
- fprintf(f, " %s", buf);
- OPENSSL_free(buf);
- return 1;
+ u_char *ret = NULL;
+ size_t dlen;
+ int r;
+
+ if (dgst_raw_length != NULL)
+ *dgst_raw_length = 0;
+ if ((r = sshkey_fingerprint_raw(k, dgst_type, &ret, &dlen)) != 0)
+ fatal("%s: %s", __func__, ssh_err(r));
+ if (dlen > INT_MAX)
+ fatal("%s: giant len %zu", __func__, dlen);
+ *dgst_raw_length = dlen;
+ return ret;
}
-#endif
-/* returns 1 ok, -1 error */
int
key_read(Key *ret, char **cpp)
{
- Key *k;
- int success = -1;
- char *cp, *space;
- int len, n, type;
- u_char *blob;
-#ifdef WITH_SSH1
- u_int bits;
-#endif
-#ifdef OPENSSL_HAS_ECC
- int curve_nid = -1;
-#endif
-
- cp = *cpp;
-
- switch (ret->type) {
- case KEY_RSA1:
-#ifdef WITH_SSH1
- /* Get number of bits. */
- if (*cp < '0' || *cp > '9')
- return -1; /* Bad bit count... */
- for (bits = 0; *cp >= '0' && *cp <= '9'; cp++)
- bits = 10 * bits + *cp - '0';
- if (bits == 0)
- return -1;
- *cpp = cp;
- /* Get public exponent, public modulus. */
- if (!read_bignum(cpp, ret->rsa->e))
- return -1;
- if (!read_bignum(cpp, ret->rsa->n))
- return -1;
- /* validate the claimed number of bits */
- if ((u_int)BN_num_bits(ret->rsa->n) != bits) {
- verbose("key_read: claimed key size %d does not match "
- "actual %d", bits, BN_num_bits(ret->rsa->n));
- return -1;
- }
- success = 1;
-#endif
- break;
- case KEY_UNSPEC:
- case KEY_RSA:
- case KEY_DSA:
- case KEY_ECDSA:
- case KEY_ED25519:
- case KEY_DSA_CERT_V00:
- case KEY_RSA_CERT_V00:
- case KEY_DSA_CERT:
- case KEY_ECDSA_CERT:
- case KEY_RSA_CERT:
- case KEY_ED25519_CERT:
- space = strchr(cp, ' ');
- if (space == NULL) {
- debug3("key_read: missing whitespace");
- return -1;
- }
- *space = '\0';
- type = key_type_from_name(cp);
-#ifdef OPENSSL_HAS_ECC
- if (key_type_plain(type) == KEY_ECDSA &&
- (curve_nid = key_ecdsa_nid_from_name(cp)) == -1) {
- debug("key_read: invalid curve");
- return -1;
- }
-#endif
- *space = ' ';
- if (type == KEY_UNSPEC) {
- debug3("key_read: missing keytype");
- return -1;
- }
- cp = space+1;
- if (*cp == '\0') {
- debug3("key_read: short string");
- return -1;
- }
- if (ret->type == KEY_UNSPEC) {
- ret->type = type;
- } else if (ret->type != type) {
- /* is a key, but different type */
- debug3("key_read: type mismatch");
- return -1;
- }
- len = 2*strlen(cp);
- blob = xmalloc(len);
- n = uudecode(cp, blob, len);
- if (n < 0) {
- error("key_read: uudecode %s failed", cp);
- free(blob);
- return -1;
- }
- k = key_from_blob(blob, (u_int)n);
- free(blob);
- if (k == NULL) {
- error("key_read: key_from_blob %s failed", cp);
- return -1;
- }
- if (k->type != type) {
- error("key_read: type mismatch: encoding error");
- key_free(k);
- return -1;
- }
-#ifdef OPENSSL_HAS_ECC
- if (key_type_plain(type) == KEY_ECDSA &&
- curve_nid != k->ecdsa_nid) {
- error("key_read: type mismatch: EC curve mismatch");
- key_free(k);
- return -1;
- }
-#endif
-/*XXXX*/
- if (key_is_cert(ret)) {
- if (!key_is_cert(k)) {
- error("key_read: loaded key is not a cert");
- key_free(k);
- return -1;
- }
- if (ret->cert != NULL)
- cert_free(ret->cert);
- ret->cert = k->cert;
- k->cert = NULL;
- }
-#ifdef WITH_OPENSSL
- if (key_type_plain(ret->type) == KEY_RSA) {
- if (ret->rsa != NULL)
- RSA_free(ret->rsa);
- ret->rsa = k->rsa;
- k->rsa = NULL;
-#ifdef DEBUG_PK
- RSA_print_fp(stderr, ret->rsa, 8);
-#endif
- }
- if (key_type_plain(ret->type) == KEY_DSA) {
- if (ret->dsa != NULL)
- DSA_free(ret->dsa);
- ret->dsa = k->dsa;
- k->dsa = NULL;
-#ifdef DEBUG_PK
- DSA_print_fp(stderr, ret->dsa, 8);
-#endif
- }
-#ifdef OPENSSL_HAS_ECC
- if (key_type_plain(ret->type) == KEY_ECDSA) {
- if (ret->ecdsa != NULL)
- EC_KEY_free(ret->ecdsa);
- ret->ecdsa = k->ecdsa;
- ret->ecdsa_nid = k->ecdsa_nid;
- k->ecdsa = NULL;
- k->ecdsa_nid = -1;
-#ifdef DEBUG_PK
- key_dump_ec_key(ret->ecdsa);
-#endif
- }
-#endif
-#endif
- if (key_type_plain(ret->type) == KEY_ED25519) {
- free(ret->ed25519_pk);
- ret->ed25519_pk = k->ed25519_pk;
- k->ed25519_pk = NULL;
-#ifdef DEBUG_PK
- /* XXX */
-#endif
- }
- success = 1;
-/*XXXX*/
- key_free(k);
- if (success != 1)
- break;
- /* advance cp: skip whitespace and data */
- while (*cp == ' ' || *cp == '\t')
- cp++;
- while (*cp != '\0' && *cp != ' ' && *cp != '\t')
- cp++;
- *cpp = cp;
- break;
- default:
- fatal("key_read: bad key type: %d", ret->type);
- break;
- }
- return success;
+ return sshkey_read(ret, cpp) == 0 ? 1 : -1;
}
int
key_write(const Key *key, FILE *f)
{
- int n, success = 0;
-#ifdef WITH_SSH1
- u_int bits = 0;
-#endif
- u_int len;
- u_char *blob;
- char *uu;
-
- if (key_is_cert(key)) {
- if (key->cert == NULL) {
- error("%s: no cert data", __func__);
- return 0;
- }
- if (buffer_len(&key->cert->certblob) == 0) {
- error("%s: no signed certificate blob", __func__);
- return 0;
- }
- }
-
- switch (key->type) {
-#ifdef WITH_SSH1
- case KEY_RSA1:
- if (key->rsa == NULL)
- return 0;
- /* size of modulus 'n' */
- bits = BN_num_bits(key->rsa->n);
- fprintf(f, "%u", bits);
- if (write_bignum(f, key->rsa->e) &&
- write_bignum(f, key->rsa->n))
- return 1;
- error("key_write: failed for RSA key");
- return 0;
-#endif
-#ifdef WITH_OPENSSL
- case KEY_DSA:
- case KEY_DSA_CERT_V00:
- case KEY_DSA_CERT:
- if (key->dsa == NULL)
- return 0;
- break;
-#ifdef OPENSSL_HAS_ECC
- case KEY_ECDSA:
- case KEY_ECDSA_CERT:
- if (key->ecdsa == NULL)
- return 0;
- break;
-#endif
- case KEY_RSA:
- case KEY_RSA_CERT_V00:
- case KEY_RSA_CERT:
- if (key->rsa == NULL)
- return 0;
- break;
-#endif
- case KEY_ED25519:
- case KEY_ED25519_CERT:
- if (key->ed25519_pk == NULL)
- return 0;
- break;
- default:
- return 0;
- }
-
- key_to_blob(key, &blob, &len);
- uu = xmalloc(2*len);
- n = uuencode(blob, len, uu, 2*len);
- if (n > 0) {
- fprintf(f, "%s %s", key_ssh_name(key), uu);
- success = 1;
- }
- free(blob);
- free(uu);
-
- return success;
-}
-
-const char *
-key_cert_type(const Key *k)
-{
- switch (k->cert->type) {
- case SSH2_CERT_TYPE_USER:
- return "user";
- case SSH2_CERT_TYPE_HOST:
- return "host";
- default:
- return "unknown";
- }
-}
-
-struct keytype {
- char *name;
- char *shortname;
- int type;
- int nid;
- int cert;
-};
-static const struct keytype keytypes[] = {
-#ifdef WITH_OPENSSL
-#ifdef WITH_SSH1
- { NULL, "RSA1", KEY_RSA1, 0, 0 },
-#endif
- { "ssh-rsa", "RSA", KEY_RSA, 0, 0 },
- { "ssh-dss", "DSA", KEY_DSA, 0, 0 },
-#ifdef OPENSSL_HAS_ECC
- { "ecdsa-sha2-nistp256", "ECDSA", KEY_ECDSA, NID_X9_62_prime256v1, 0 },
- { "ecdsa-sha2-nistp384", "ECDSA", KEY_ECDSA, NID_secp384r1, 0 },
-# ifdef OPENSSL_HAS_NISTP521
- { "ecdsa-sha2-nistp521", "ECDSA", KEY_ECDSA, NID_secp521r1, 0 },
-# endif
-#endif /* OPENSSL_HAS_ECC */
- { "ssh-rsa-cert-v01@openssh.com", "RSA-CERT", KEY_RSA_CERT, 0, 1 },
- { "ssh-dss-cert-v01@openssh.com", "DSA-CERT", KEY_DSA_CERT, 0, 1 },
-#ifdef OPENSSL_HAS_ECC
- { "ecdsa-sha2-nistp256-cert-v01@openssh.com", "ECDSA-CERT",
- KEY_ECDSA_CERT, NID_X9_62_prime256v1, 1 },
- { "ecdsa-sha2-nistp384-cert-v01@openssh.com", "ECDSA-CERT",
- KEY_ECDSA_CERT, NID_secp384r1, 1 },
-# ifdef OPENSSL_HAS_NISTP521
- { "ecdsa-sha2-nistp521-cert-v01@openssh.com", "ECDSA-CERT",
- KEY_ECDSA_CERT, NID_secp521r1, 1 },
-# endif
-#endif /* OPENSSL_HAS_ECC */
- { "ssh-rsa-cert-v00@openssh.com", "RSA-CERT-V00",
- KEY_RSA_CERT_V00, 0, 1 },
- { "ssh-dss-cert-v00@openssh.com", "DSA-CERT-V00",
- KEY_DSA_CERT_V00, 0, 1 },
-#endif
- { "ssh-ed25519", "ED25519", KEY_ED25519, 0, 0 },
- { "ssh-ed25519-cert-v01@openssh.com", "ED25519-CERT",
- KEY_ED25519_CERT, 0, 1 },
- { NULL, NULL, -1, -1, 0 }
-};
-
-const char *
-key_type(const Key *k)
-{
- const struct keytype *kt;
-
- for (kt = keytypes; kt->type != -1; kt++) {
- if (kt->type == k->type)
- return kt->shortname;
- }
- return "unknown";
-}
-
-static const char *
-key_ssh_name_from_type_nid(int type, int nid)
-{
- const struct keytype *kt;
-
- for (kt = keytypes; kt->type != -1; kt++) {
- if (kt->type == type && (kt->nid == 0 || kt->nid == nid))
- return kt->name;
- }
- return "ssh-unknown";
-}
-
-const char *
-key_ssh_name(const Key *k)
-{
- return key_ssh_name_from_type_nid(k->type, k->ecdsa_nid);
-}
-
-const char *
-key_ssh_name_plain(const Key *k)
-{
- return key_ssh_name_from_type_nid(key_type_plain(k->type),
- k->ecdsa_nid);
-}
-
-int
-key_type_from_name(char *name)
-{
- const struct keytype *kt;
-
- for (kt = keytypes; kt->type != -1; kt++) {
- /* Only allow shortname matches for plain key types */
- if ((kt->name != NULL && strcmp(name, kt->name) == 0) ||
- (!kt->cert && strcasecmp(kt->shortname, name) == 0))
- return kt->type;
- }
- debug2("key_type_from_name: unknown key type '%s'", name);
- return KEY_UNSPEC;
-}
-
-int
-key_ecdsa_nid_from_name(const char *name)
-{
- const struct keytype *kt;
-
- for (kt = keytypes; kt->type != -1; kt++) {
- if (kt->type != KEY_ECDSA && kt->type != KEY_ECDSA_CERT)
- continue;
- if (kt->name != NULL && strcmp(name, kt->name) == 0)
- return kt->nid;
- }
- debug2("%s: unknown/non-ECDSA key type '%s'", __func__, name);
- return -1;
-}
-
-char *
-key_alg_list(int certs_only, int plain_only)
-{
- char *ret = NULL;
- size_t nlen, rlen = 0;
- const struct keytype *kt;
-
- for (kt = keytypes; kt->type != -1; kt++) {
- if (kt->name == NULL)
- continue;
- if ((certs_only && !kt->cert) || (plain_only && kt->cert))
- continue;
- if (ret != NULL)
- ret[rlen++] = '\n';
- nlen = strlen(kt->name);
- ret = xrealloc(ret, 1, rlen + nlen + 2);
- memcpy(ret + rlen, kt->name, nlen + 1);
- rlen += nlen;
- }
- return ret;
-}
-
-int
-key_type_is_cert(int type)
-{
- const struct keytype *kt;
-
- for (kt = keytypes; kt->type != -1; kt++) {
- if (kt->type == type)
- return kt->cert;
- }
- return 0;
-}
-
-static int
-key_type_is_valid_ca(int type)
-{
- switch (type) {
- case KEY_RSA:
- case KEY_DSA:
- case KEY_ECDSA:
- case KEY_ED25519:
- return 1;
- default:
- return 0;
- }
-}
-
-u_int
-key_size(const Key *k)
-{
- switch (k->type) {
-#ifdef WITH_OPENSSL
- case KEY_RSA1:
- case KEY_RSA:
- case KEY_RSA_CERT_V00:
- case KEY_RSA_CERT:
- return BN_num_bits(k->rsa->n);
- case KEY_DSA:
- case KEY_DSA_CERT_V00:
- case KEY_DSA_CERT:
- return BN_num_bits(k->dsa->p);
-#ifdef OPENSSL_HAS_ECC
- case KEY_ECDSA:
- case KEY_ECDSA_CERT:
- return key_curve_nid_to_bits(k->ecdsa_nid);
-#endif
-#endif
- case KEY_ED25519:
- return 256; /* XXX */
- }
- return 0;
-}
-
-#ifdef WITH_OPENSSL
-static RSA *
-rsa_generate_private_key(u_int bits)
-{
- RSA *private = RSA_new();
- BIGNUM *f4 = BN_new();
-
- if (private == NULL)
- fatal("%s: RSA_new failed", __func__);
- if (f4 == NULL)
- fatal("%s: BN_new failed", __func__);
- if (!BN_set_word(f4, RSA_F4))
- fatal("%s: BN_new failed", __func__);
- if (!RSA_generate_key_ex(private, bits, f4, NULL))
- fatal("%s: key generation failed.", __func__);
- BN_free(f4);
- return private;
-}
-
-static DSA*
-dsa_generate_private_key(u_int bits)
-{
- DSA *private = DSA_new();
-
- if (private == NULL)
- fatal("%s: DSA_new failed", __func__);
- if (!DSA_generate_parameters_ex(private, bits, NULL, 0, NULL,
- NULL, NULL))
- fatal("%s: DSA_generate_parameters failed", __func__);
- if (!DSA_generate_key(private))
- fatal("%s: DSA_generate_key failed.", __func__);
- return private;
-}
-
-int
-key_ecdsa_bits_to_nid(int bits)
-{
- switch (bits) {
-#ifdef OPENSSL_HAS_ECC
- case 256:
- return NID_X9_62_prime256v1;
- case 384:
- return NID_secp384r1;
-# ifdef OPENSSL_HAS_NISTP521
- case 521:
- return NID_secp521r1;
-# endif
-#endif
- default:
- return -1;
- }
-}
-
-#ifdef OPENSSL_HAS_ECC
-int
-key_ecdsa_key_to_nid(EC_KEY *k)
-{
- EC_GROUP *eg;
- int nids[] = {
- NID_X9_62_prime256v1,
- NID_secp384r1,
-# ifdef OPENSSL_HAS_NISTP521
- NID_secp521r1,
-# endif
- -1
- };
- int nid;
- u_int i;
- BN_CTX *bnctx;
- const EC_GROUP *g = EC_KEY_get0_group(k);
-
- /*
- * The group may be stored in a ASN.1 encoded private key in one of two
- * ways: as a "named group", which is reconstituted by ASN.1 object ID
- * or explicit group parameters encoded into the key blob. Only the
- * "named group" case sets the group NID for us, but we can figure
- * it out for the other case by comparing against all the groups that
- * are supported.
- */
- if ((nid = EC_GROUP_get_curve_name(g)) > 0)
- return nid;
- if ((bnctx = BN_CTX_new()) == NULL)
- fatal("%s: BN_CTX_new() failed", __func__);
- for (i = 0; nids[i] != -1; i++) {
- if ((eg = EC_GROUP_new_by_curve_name(nids[i])) == NULL)
- fatal("%s: EC_GROUP_new_by_curve_name failed",
- __func__);
- if (EC_GROUP_cmp(g, eg, bnctx) == 0)
- break;
- EC_GROUP_free(eg);
- }
- BN_CTX_free(bnctx);
- debug3("%s: nid = %d", __func__, nids[i]);
- if (nids[i] != -1) {
- /* Use the group with the NID attached */
- EC_GROUP_set_asn1_flag(eg, OPENSSL_EC_NAMED_CURVE);
- if (EC_KEY_set_group(k, eg) != 1)
- fatal("%s: EC_KEY_set_group", __func__);
- }
- return nids[i];
+ return sshkey_write(key, f) == 0 ? 1 : 0;
}
-static EC_KEY*
-ecdsa_generate_private_key(u_int bits, int *nid)
-{
- EC_KEY *private;
-
- if ((*nid = key_ecdsa_bits_to_nid(bits)) == -1)
- fatal("%s: invalid key length", __func__);
- if ((private = EC_KEY_new_by_curve_name(*nid)) == NULL)
- fatal("%s: EC_KEY_new_by_curve_name failed", __func__);
- if (EC_KEY_generate_key(private) != 1)
- fatal("%s: EC_KEY_generate_key failed", __func__);
- EC_KEY_set_asn1_flag(private, OPENSSL_EC_NAMED_CURVE);
- return private;
-}
-#endif /* OPENSSL_HAS_ECC */
-#endif /* WITH_OPENSSL */
-
Key *
key_generate(int type, u_int bits)
{
- Key *k = key_new(KEY_UNSPEC);
- switch (type) {
-#ifdef WITH_OPENSSL
- case KEY_DSA:
- k->dsa = dsa_generate_private_key(bits);
- break;
-#ifdef OPENSSL_HAS_ECC
- case KEY_ECDSA:
- k->ecdsa = ecdsa_generate_private_key(bits, &k->ecdsa_nid);
- break;
-#endif
- case KEY_RSA:
- case KEY_RSA1:
- k->rsa = rsa_generate_private_key(bits);
- break;
-#endif
- case KEY_RSA_CERT_V00:
- case KEY_DSA_CERT_V00:
- case KEY_RSA_CERT:
- case KEY_DSA_CERT:
- fatal("key_generate: cert keys cannot be generated directly");
-#endif
- case KEY_ED25519:
- k->ed25519_pk = xmalloc(ED25519_PK_SZ);
- k->ed25519_sk = xmalloc(ED25519_SK_SZ);
- crypto_sign_ed25519_keypair(k->ed25519_pk, k->ed25519_sk);
- break;
- default:
- fatal("key_generate: unknown type %d", type);
- }
- k->type = type;
- return k;
+ int r;
+ Key *ret = NULL;
+
+ if ((r = sshkey_generate(type, bits, &ret)) != 0)
+ fatal("%s: %s", __func__, ssh_err(r));
+ return ret;
}
void
-key_cert_copy(const Key *from_key, struct Key *to_key)
+key_cert_copy(const Key *from_key, Key *to_key)
{
- u_int i;
- const struct KeyCert *from;
- struct KeyCert *to;
-
- if (to_key->cert != NULL) {
- cert_free(to_key->cert);
- to_key->cert = NULL;
- }
+ int r;
- if ((from = from_key->cert) == NULL)
- return;
-
- to = to_key->cert = cert_new();
-
- buffer_append(&to->certblob, buffer_ptr(&from->certblob),
- buffer_len(&from->certblob));
-
- buffer_append(&to->critical,
- buffer_ptr(&from->critical), buffer_len(&from->critical));
- buffer_append(&to->extensions,
- buffer_ptr(&from->extensions), buffer_len(&from->extensions));
-
- to->serial = from->serial;
- to->type = from->type;
- to->key_id = from->key_id == NULL ? NULL : xstrdup(from->key_id);
- to->valid_after = from->valid_after;
- to->valid_before = from->valid_before;
- to->signature_key = from->signature_key == NULL ?
- NULL : key_from_private(from->signature_key);
-
- to->nprincipals = from->nprincipals;
- if (to->nprincipals > CERT_MAX_PRINCIPALS)
- fatal("%s: nprincipals (%u) > CERT_MAX_PRINCIPALS (%u)",
- __func__, to->nprincipals, CERT_MAX_PRINCIPALS);
- if (to->nprincipals > 0) {
- to->principals = xcalloc(from->nprincipals,
- sizeof(*to->principals));
- for (i = 0; i < to->nprincipals; i++)
- to->principals[i] = xstrdup(from->principals[i]);
- }
+ if ((r = sshkey_cert_copy(from_key, to_key)) != 0)
+ fatal("%s: %s", __func__, ssh_err(r));
}
Key *
key_from_private(const Key *k)
{
- Key *n = NULL;
- switch (k->type) {
-#ifdef WITH_OPENSSL
- case KEY_DSA:
- case KEY_DSA_CERT_V00:
- case KEY_DSA_CERT:
- n = key_new(k->type);
- if ((BN_copy(n->dsa->p, k->dsa->p) == NULL) ||
- (BN_copy(n->dsa->q, k->dsa->q) == NULL) ||
- (BN_copy(n->dsa->g, k->dsa->g) == NULL) ||
- (BN_copy(n->dsa->pub_key, k->dsa->pub_key) == NULL))
- fatal("key_from_private: BN_copy failed");
- break;
-#ifdef OPENSSL_HAS_ECC
- case KEY_ECDSA:
- case KEY_ECDSA_CERT:
- n = key_new(k->type);
- n->ecdsa_nid = k->ecdsa_nid;
- if ((n->ecdsa = EC_KEY_new_by_curve_name(k->ecdsa_nid)) == NULL)
- fatal("%s: EC_KEY_new_by_curve_name failed", __func__);
- if (EC_KEY_set_public_key(n->ecdsa,
- EC_KEY_get0_public_key(k->ecdsa)) != 1)
- fatal("%s: EC_KEY_set_public_key failed", __func__);
- break;
-#endif
- case KEY_RSA:
- case KEY_RSA1:
- case KEY_RSA_CERT_V00:
- case KEY_RSA_CERT:
- n = key_new(k->type);
- if ((BN_copy(n->rsa->n, k->rsa->n) == NULL) ||
- (BN_copy(n->rsa->e, k->rsa->e) == NULL))
- fatal("key_from_private: BN_copy failed");
- break;
-#endif
- case KEY_ED25519:
- case KEY_ED25519_CERT:
- n = key_new(k->type);
- if (k->ed25519_pk != NULL) {
- n->ed25519_pk = xmalloc(ED25519_PK_SZ);
- memcpy(n->ed25519_pk, k->ed25519_pk, ED25519_PK_SZ);
- }
- break;
- default:
- fatal("key_from_private: unknown type %d", k->type);
- break;
- }
- if (key_is_cert(k))
- key_cert_copy(k, n);
- return n;
-}
-
-int
-key_names_valid2(const char *names)
-{
- char *s, *cp, *p;
-
- if (names == NULL || strcmp(names, "") == 0)
- return 0;
- s = cp = xstrdup(names);
- for ((p = strsep(&cp, ",")); p && *p != '\0';
- (p = strsep(&cp, ","))) {
- switch (key_type_from_name(p)) {
- case KEY_RSA1:
- case KEY_UNSPEC:
- free(s);
- return 0;
- }
- }
- debug3("key names ok: [%s]", names);
- free(s);
- return 1;
-}
-
-static int
-cert_parse(Buffer *b, Key *key, const u_char *blob, u_int blen)
-{
- u_char *principals, *critical, *exts, *sig_key, *sig;
- u_int signed_len, plen, clen, sklen, slen, kidlen, elen;
- Buffer tmp;
- char *principal;
- int ret = -1;
- int v00 = key->type == KEY_DSA_CERT_V00 ||
- key->type == KEY_RSA_CERT_V00;
-
- buffer_init(&tmp);
-
- /* Copy the entire key blob for verification and later serialisation */
- buffer_append(&key->cert->certblob, blob, blen);
-
- elen = 0; /* Not touched for v00 certs */
- principals = exts = critical = sig_key = sig = NULL;
- if ((!v00 && buffer_get_int64_ret(&key->cert->serial, b) != 0) ||
- buffer_get_int_ret(&key->cert->type, b) != 0 ||
- (key->cert->key_id = buffer_get_cstring_ret(b, &kidlen)) == NULL ||
- (principals = buffer_get_string_ret(b, &plen)) == NULL ||
- buffer_get_int64_ret(&key->cert->valid_after, b) != 0 ||
- buffer_get_int64_ret(&key->cert->valid_before, b) != 0 ||
- (critical = buffer_get_string_ret(b, &clen)) == NULL ||
- (!v00 && (exts = buffer_get_string_ret(b, &elen)) == NULL) ||
- (v00 && buffer_get_string_ptr_ret(b, NULL) == NULL) || /* nonce */
- buffer_get_string_ptr_ret(b, NULL) == NULL || /* reserved */
- (sig_key = buffer_get_string_ret(b, &sklen)) == NULL) {
- error("%s: parse error", __func__);
- goto out;
- }
-
- /* Signature is left in the buffer so we can calculate this length */
- signed_len = buffer_len(&key->cert->certblob) - buffer_len(b);
-
- if ((sig = buffer_get_string_ret(b, &slen)) == NULL) {
- error("%s: parse error", __func__);
- goto out;
- }
-
- if (key->cert->type != SSH2_CERT_TYPE_USER &&
- key->cert->type != SSH2_CERT_TYPE_HOST) {
- error("Unknown certificate type %u", key->cert->type);
- goto out;
- }
-
- buffer_append(&tmp, principals, plen);
- while (buffer_len(&tmp) > 0) {
- if (key->cert->nprincipals >= CERT_MAX_PRINCIPALS) {
- error("%s: Too many principals", __func__);
- goto out;
- }
- if ((principal = buffer_get_cstring_ret(&tmp, &plen)) == NULL) {
- error("%s: Principals data invalid", __func__);
- goto out;
- }
- key->cert->principals = xrealloc(key->cert->principals,
- key->cert->nprincipals + 1, sizeof(*key->cert->principals));
- key->cert->principals[key->cert->nprincipals++] = principal;
- }
-
- buffer_clear(&tmp);
-
- buffer_append(&key->cert->critical, critical, clen);
- buffer_append(&tmp, critical, clen);
- /* validate structure */
- while (buffer_len(&tmp) != 0) {
- if (buffer_get_string_ptr_ret(&tmp, NULL) == NULL ||
- buffer_get_string_ptr_ret(&tmp, NULL) == NULL) {
- error("%s: critical option data invalid", __func__);
- goto out;
- }
- }
- buffer_clear(&tmp);
-
- buffer_append(&key->cert->extensions, exts, elen);
- buffer_append(&tmp, exts, elen);
- /* validate structure */
- while (buffer_len(&tmp) != 0) {
- if (buffer_get_string_ptr_ret(&tmp, NULL) == NULL ||
- buffer_get_string_ptr_ret(&tmp, NULL) == NULL) {
- error("%s: extension data invalid", __func__);
- goto out;
- }
- }
- buffer_clear(&tmp);
-
- if ((key->cert->signature_key = key_from_blob2(sig_key, sklen, 0))
- == NULL) {
- error("%s: Signature key invalid", __func__);
- goto out;
- }
- if (!key_type_is_valid_ca(key->cert->signature_key->type)) {
- error("%s: Invalid signature key type %s (%d)", __func__,
- key_type(key->cert->signature_key),
- key->cert->signature_key->type);
- goto out;
- }
+ int r;
+ Key *ret = NULL;
- switch (key_verify(key->cert->signature_key, sig, slen,
- buffer_ptr(&key->cert->certblob), signed_len)) {
- case 1:
- ret = 0;
- break; /* Good signature */
- case 0:
- error("%s: Invalid signature on certificate", __func__);
- goto out;
- case -1:
- error("%s: Certificate signature verification failed",
- __func__);
- goto out;
- }
-
- out:
- buffer_free(&tmp);
- free(principals);
- free(critical);
- free(exts);
- free(sig_key);
- free(sig);
+ if ((r = sshkey_from_private(k, &ret)) != 0)
+ fatal("%s: %s", __func__, ssh_err(r));
return ret;
}
-static Key *
-key_from_blob2(const u_char *blob, u_int blen, int allow_cert)
+static void
+fatal_on_fatal_errors(int r, const char *func, int extra_fatal)
{
- Buffer b;
- int rlen, type;
- u_int len;
- char *ktype = NULL, *curve = NULL;
- u_char *pk = NULL;
- Key *key = NULL;
-#ifdef OPENSSL_HAS_ECC
- EC_POINT *q = NULL;
- int nid = -1;
-#endif
-
-#ifdef DEBUG_PK
- dump_base64(stderr, blob, blen);
-#endif
- buffer_init(&b);
- buffer_append(&b, blob, blen);
- if ((ktype = buffer_get_cstring_ret(&b, NULL)) == NULL) {
- error("key_from_blob: can't read key type");
- goto out;
- }
-
- type = key_type_from_name(ktype);
-#ifdef OPENSSL_HAS_ECC
- if (key_type_plain(type) == KEY_ECDSA)
- nid = key_ecdsa_nid_from_name(ktype);
-#endif
- if (!allow_cert && key_type_is_cert(type)) {
- error("key_from_blob: certificate not allowed in this context");
- goto out;
- }
- switch (type) {
-#ifdef WITH_OPENSSL
- case KEY_RSA_CERT:
- (void)buffer_get_string_ptr_ret(&b, NULL); /* Skip nonce */
- /* FALLTHROUGH */
- case KEY_RSA:
- case KEY_RSA_CERT_V00:
- key = key_new(type);
- if (buffer_get_bignum2_ret(&b, key->rsa->e) == -1 ||
- buffer_get_bignum2_ret(&b, key->rsa->n) == -1) {
- error("key_from_blob: can't read rsa key");
- goto badkey;
- }
-#ifdef DEBUG_PK
- RSA_print_fp(stderr, key->rsa, 8);
-#endif
- break;
- case KEY_DSA_CERT:
- (void)buffer_get_string_ptr_ret(&b, NULL); /* Skip nonce */
- /* FALLTHROUGH */
- case KEY_DSA:
- case KEY_DSA_CERT_V00:
- key = key_new(type);
- if (buffer_get_bignum2_ret(&b, key->dsa->p) == -1 ||
- buffer_get_bignum2_ret(&b, key->dsa->q) == -1 ||
- buffer_get_bignum2_ret(&b, key->dsa->g) == -1 ||
- buffer_get_bignum2_ret(&b, key->dsa->pub_key) == -1) {
- error("key_from_blob: can't read dsa key");
- goto badkey;
- }
-#ifdef DEBUG_PK
- DSA_print_fp(stderr, key->dsa, 8);
-#endif
- break;
-#ifdef OPENSSL_HAS_ECC
- case KEY_ECDSA_CERT:
- (void)buffer_get_string_ptr_ret(&b, NULL); /* Skip nonce */
- /* FALLTHROUGH */
- case KEY_ECDSA:
- key = key_new(type);
- key->ecdsa_nid = nid;
- if ((curve = buffer_get_string_ret(&b, NULL)) == NULL) {
- error("key_from_blob: can't read ecdsa curve");
- goto badkey;
- }
- if (key->ecdsa_nid != key_curve_name_to_nid(curve)) {
- error("key_from_blob: ecdsa curve doesn't match type");
- goto badkey;
- }
- if (key->ecdsa != NULL)
- EC_KEY_free(key->ecdsa);
- if ((key->ecdsa = EC_KEY_new_by_curve_name(key->ecdsa_nid))
- == NULL)
- fatal("key_from_blob: EC_KEY_new_by_curve_name failed");
- if ((q = EC_POINT_new(EC_KEY_get0_group(key->ecdsa))) == NULL)
- fatal("key_from_blob: EC_POINT_new failed");
- if (buffer_get_ecpoint_ret(&b, EC_KEY_get0_group(key->ecdsa),
- q) == -1) {
- error("key_from_blob: can't read ecdsa key point");
- goto badkey;
- }
- if (key_ec_validate_public(EC_KEY_get0_group(key->ecdsa),
- q) != 0)
- goto badkey;
- if (EC_KEY_set_public_key(key->ecdsa, q) != 1)
- fatal("key_from_blob: EC_KEY_set_public_key failed");
-#ifdef DEBUG_PK
- key_dump_ec_point(EC_KEY_get0_group(key->ecdsa), q);
-#endif
- break;
-#endif /* OPENSSL_HAS_ECC */
- case KEY_ED25519_CERT:
- (void)buffer_get_string_ptr_ret(&b, NULL); /* Skip nonce */
- /* FALLTHROUGH */
- case KEY_ED25519:
- if ((pk = buffer_get_string_ret(&b, &len)) == NULL) {
- error("key_from_blob: can't read ed25519 key");
- goto badkey;
- }
- if (len != ED25519_PK_SZ) {
- error("key_from_blob: ed25519 len %d != %d",
- len, ED25519_PK_SZ);
- goto badkey;
- }
- key = key_new(type);
- key->ed25519_pk = pk;
- pk = NULL;
- break;
- case KEY_UNSPEC:
- key = key_new(type);
- break;
- default:
- error("key_from_blob: cannot handle type %s", ktype);
- goto out;
- }
- if (key_is_cert(key) && cert_parse(&b, key, blob, blen) == -1) {
- error("key_from_blob: can't parse cert data");
- goto badkey;
- }
- rlen = buffer_len(&b);
- if (key != NULL && rlen != 0)
- error("key_from_blob: remaining bytes in key blob %d", rlen);
- out:
- free(ktype);
- free(curve);
- free(pk);
-#ifdef OPENSSL_HAS_ECC
- if (q != NULL)
- EC_POINT_free(q);
-#endif
- buffer_free(&b);
- return key;
-
- badkey:
- key_free(key);
- key = NULL;
- goto out;
+ if (r == SSH_ERR_INTERNAL_ERROR ||
+ r == SSH_ERR_ALLOC_FAIL ||
+ (extra_fatal != 0 && r == extra_fatal))
+ fatal("%s: %s", func, ssh_err(r));
}
Key *
key_from_blob(const u_char *blob, u_int blen)
{
- return key_from_blob2(blob, blen, 1);
+ int r;
+ Key *ret = NULL;
+
+ if ((r = sshkey_from_blob(blob, blen, &ret)) != 0) {
+ fatal_on_fatal_errors(r, __func__, 0);
+ error("%s: %s", __func__, ssh_err(r));
+ return NULL;
+ }
+ return ret;
}
-static int
-to_blob(const Key *key, u_char **blobp, u_int *lenp, int force_plain)
+int
+key_to_blob(const Key *key, u_char **blobp, u_int *lenp)
{
- Buffer b;
- int len, type;
+ u_char *blob;
+ size_t blen;
+ int r;
if (blobp != NULL)
*blobp = NULL;
if (lenp != NULL)
*lenp = 0;
- if (key == NULL) {
- error("key_to_blob: key == NULL");
+ if ((r = sshkey_to_blob(key, &blob, &blen)) != 0) {
+ fatal_on_fatal_errors(r, __func__, 0);
+ error("%s: %s", __func__, ssh_err(r));
return 0;
}
- buffer_init(&b);
- type = force_plain ? key_type_plain(key->type) : key->type;
- switch (type) {
-#ifdef WITH_OPENSSL
- case KEY_DSA_CERT_V00:
- case KEY_RSA_CERT_V00:
- case KEY_DSA_CERT:
- case KEY_ECDSA_CERT:
- case KEY_RSA_CERT:
-#endif
- case KEY_ED25519_CERT:
- /* Use the existing blob */
- buffer_append(&b, buffer_ptr(&key->cert->certblob),
- buffer_len(&key->cert->certblob));
- break;
-#ifdef WITH_OPENSSL
- case KEY_DSA:
- buffer_put_cstring(&b,
- key_ssh_name_from_type_nid(type, key->ecdsa_nid));
- buffer_put_bignum2(&b, key->dsa->p);
- buffer_put_bignum2(&b, key->dsa->q);
- buffer_put_bignum2(&b, key->dsa->g);
- buffer_put_bignum2(&b, key->dsa->pub_key);
- break;
-#ifdef OPENSSL_HAS_ECC
- case KEY_ECDSA:
- buffer_put_cstring(&b,
- key_ssh_name_from_type_nid(type, key->ecdsa_nid));
- buffer_put_cstring(&b, key_curve_nid_to_name(key->ecdsa_nid));
- buffer_put_ecpoint(&b, EC_KEY_get0_group(key->ecdsa),
- EC_KEY_get0_public_key(key->ecdsa));
- break;
-#endif
- case KEY_RSA:
- buffer_put_cstring(&b,
- key_ssh_name_from_type_nid(type, key->ecdsa_nid));
- buffer_put_bignum2(&b, key->rsa->e);
- buffer_put_bignum2(&b, key->rsa->n);
- break;
-#endif
- case KEY_ED25519:
- buffer_put_cstring(&b,
- key_ssh_name_from_type_nid(type, key->ecdsa_nid));
- buffer_put_string(&b, key->ed25519_pk, ED25519_PK_SZ);
- break;
- default:
- error("key_to_blob: unsupported key type %d", key->type);
- buffer_free(&b);
- return 0;
- }
- len = buffer_len(&b);
+ if (blen > INT_MAX)
+ fatal("%s: giant len %zu", __func__, blen);
+ if (blobp != NULL)
+ *blobp = blob;
if (lenp != NULL)
- *lenp = len;
- if (blobp != NULL) {
- *blobp = xmalloc(len);
- memcpy(*blobp, buffer_ptr(&b), len);
- }
- explicit_bzero(buffer_ptr(&b), len);
- buffer_free(&b);
- return len;
+ *lenp = blen;
+ return blen;
}
int
-key_to_blob(const Key *key, u_char **blobp, u_int *lenp)
-{
- return to_blob(key, blobp, lenp, 0);
-}
-
-int
-key_sign(
- const Key *key,
- u_char **sigp, u_int *lenp,
+key_sign(const Key *key, u_char **sigp, u_int *lenp,
const u_char *data, u_int datalen)
{
- switch (key->type) {
-#ifdef WITH_OPENSSL
- case KEY_DSA_CERT_V00:
- case KEY_DSA_CERT:
- case KEY_DSA:
- return ssh_dss_sign(key, sigp, lenp, data, datalen);
-#ifdef OPENSSL_HAS_ECC
- case KEY_ECDSA_CERT:
- case KEY_ECDSA:
- return ssh_ecdsa_sign(key, sigp, lenp, data, datalen);
-#endif
- case KEY_RSA_CERT_V00:
- case KEY_RSA_CERT:
- case KEY_RSA:
- return ssh_rsa_sign(key, sigp, lenp, data, datalen);
-#endif
- case KEY_ED25519:
- case KEY_ED25519_CERT:
- return ssh_ed25519_sign(key, sigp, lenp, data, datalen);
- default:
- error("key_sign: invalid key type %d", key->type);
+ int r;
+ u_char *sig;
+ size_t siglen;
+
+ if (sigp != NULL)
+ *sigp = NULL;
+ if (lenp != NULL)
+ *lenp = 0;
+ if ((r = sshkey_sign(key, &sig, &siglen,
+ data, datalen, datafellows)) != 0) {
+ fatal_on_fatal_errors(r, __func__, 0);
+ error("%s: %s", __func__, ssh_err(r));
return -1;
}
+ if (siglen > INT_MAX)
+ fatal("%s: giant len %zu", __func__, siglen);
+ if (sigp != NULL)
+ *sigp = sig;
+ if (lenp != NULL)
+ *lenp = siglen;
+ return 0;
}
-/*
- * key_verify returns 1 for a correct signature, 0 for an incorrect signature
- * and -1 on error.
- */
int
-key_verify(
- const Key *key,
- const u_char *signature, u_int signaturelen,
+key_verify(const Key *key, const u_char *signature, u_int signaturelen,
const u_char *data, u_int datalen)
{
- if (signaturelen == 0)
- return -1;
+ int r;
- switch (key->type) {
-#ifdef WITH_OPENSSL
- case KEY_DSA_CERT_V00:
- case KEY_DSA_CERT:
- case KEY_DSA:
- return ssh_dss_verify(key, signature, signaturelen, data, datalen);
-#ifdef OPENSSL_HAS_ECC
- case KEY_ECDSA_CERT:
- case KEY_ECDSA:
- return ssh_ecdsa_verify(key, signature, signaturelen, data, datalen);
-#endif
- case KEY_RSA_CERT_V00:
- case KEY_RSA_CERT:
- case KEY_RSA:
- return ssh_rsa_verify(key, signature, signaturelen, data, datalen);
-#endif
- case KEY_ED25519:
- case KEY_ED25519_CERT:
- return ssh_ed25519_verify(key, signature, signaturelen, data, datalen);
- default:
- error("key_verify: invalid key type %d", key->type);
- return -1;
+ if ((r = sshkey_verify(key, signature, signaturelen,
+ data, datalen, datafellows)) != 0) {
+ fatal_on_fatal_errors(r, __func__, 0);
+ error("%s: %s", __func__, ssh_err(r));
+ return r == SSH_ERR_SIGNATURE_INVALID ? 0 : -1;
}
+ return 1;
}
-/* Converts a private to a public key */
Key *
key_demote(const Key *k)
{
- Key *pk;
-
- pk = xcalloc(1, sizeof(*pk));
- pk->type = k->type;
- pk->flags = k->flags;
- pk->ecdsa_nid = k->ecdsa_nid;
- pk->dsa = NULL;
- pk->ecdsa = NULL;
- pk->rsa = NULL;
- pk->ed25519_pk = NULL;
- pk->ed25519_sk = NULL;
-
- switch (k->type) {
-#ifdef WITH_OPENSSL
- case KEY_RSA_CERT_V00:
- case KEY_RSA_CERT:
- key_cert_copy(k, pk);
- /* FALLTHROUGH */
- case KEY_RSA1:
- case KEY_RSA:
- if ((pk->rsa = RSA_new()) == NULL)
- fatal("key_demote: RSA_new failed");
- if ((pk->rsa->e = BN_dup(k->rsa->e)) == NULL)
- fatal("key_demote: BN_dup failed");
- if ((pk->rsa->n = BN_dup(k->rsa->n)) == NULL)
- fatal("key_demote: BN_dup failed");
- break;
- case KEY_DSA_CERT_V00:
- case KEY_DSA_CERT:
- key_cert_copy(k, pk);
- /* FALLTHROUGH */
- case KEY_DSA:
- if ((pk->dsa = DSA_new()) == NULL)
- fatal("key_demote: DSA_new failed");
- if ((pk->dsa->p = BN_dup(k->dsa->p)) == NULL)
- fatal("key_demote: BN_dup failed");
- if ((pk->dsa->q = BN_dup(k->dsa->q)) == NULL)
- fatal("key_demote: BN_dup failed");
- if ((pk->dsa->g = BN_dup(k->dsa->g)) == NULL)
- fatal("key_demote: BN_dup failed");
- if ((pk->dsa->pub_key = BN_dup(k->dsa->pub_key)) == NULL)
- fatal("key_demote: BN_dup failed");
- break;
-#ifdef OPENSSL_HAS_ECC
- case KEY_ECDSA_CERT:
- key_cert_copy(k, pk);
- /* FALLTHROUGH */
- case KEY_ECDSA:
- if ((pk->ecdsa = EC_KEY_new_by_curve_name(pk->ecdsa_nid)) == NULL)
- fatal("key_demote: EC_KEY_new_by_curve_name failed");
- if (EC_KEY_set_public_key(pk->ecdsa,
- EC_KEY_get0_public_key(k->ecdsa)) != 1)
- fatal("key_demote: EC_KEY_set_public_key failed");
- break;
-#endif
- case KEY_ED25519_CERT:
- key_cert_copy(k, pk);
- /* FALLTHROUGH */
- case KEY_ED25519:
- if (k->ed25519_pk != NULL) {
- pk->ed25519_pk = xmalloc(ED25519_PK_SZ);
- memcpy(pk->ed25519_pk, k->ed25519_pk, ED25519_PK_SZ);
- }
- break;
- default:
- fatal("key_demote: bad key type %d", k->type);
- break;
- }
-
- return (pk);
-}
-
-int
-key_is_cert(const Key *k)
-{
- if (k == NULL)
- return 0;
- return key_type_is_cert(k->type);
-}
+ int r;
+ Key *ret = NULL;
-/* Return the cert-less equivalent to a certified key type */
-int
-key_type_plain(int type)
-{
- switch (type) {
- case KEY_RSA_CERT_V00:
- case KEY_RSA_CERT:
- return KEY_RSA;
- case KEY_DSA_CERT_V00:
- case KEY_DSA_CERT:
- return KEY_DSA;
- case KEY_ECDSA_CERT:
- return KEY_ECDSA;
- case KEY_ED25519_CERT:
- return KEY_ED25519;
- default:
- return type;
- }
+ if ((r = sshkey_demote(k, &ret)) != 0)
+ fatal("%s: %s", __func__, ssh_err(r));
+ return ret;
}
-/* Convert a plain key to their _CERT equivalent */
int
key_to_certified(Key *k, int legacy)
{
- switch (k->type) {
- case KEY_RSA:
- k->cert = cert_new();
- k->type = legacy ? KEY_RSA_CERT_V00 : KEY_RSA_CERT;
- return 0;
- case KEY_DSA:
- k->cert = cert_new();
- k->type = legacy ? KEY_DSA_CERT_V00 : KEY_DSA_CERT;
- return 0;
- case KEY_ECDSA:
- if (legacy)
- fatal("%s: legacy ECDSA certificates are not supported",
- __func__);
- k->cert = cert_new();
- k->type = KEY_ECDSA_CERT;
- return 0;
- case KEY_ED25519:
- if (legacy)
- fatal("%s: legacy ED25519 certificates are not "
- "supported", __func__);
- k->cert = cert_new();
- k->type = KEY_ED25519_CERT;
- return 0;
- default:
- error("%s: key has incorrect type %s", __func__, key_type(k));
+ int r;
+
+ if ((r = sshkey_to_certified(k, legacy)) != 0) {
+ fatal_on_fatal_errors(r, __func__, 0);
+ error("%s: %s", __func__, ssh_err(r));
return -1;
}
+ return 0;
}
-/* Convert a certificate to its raw key equivalent */
int
key_drop_cert(Key *k)
{
- if (!key_type_is_cert(k->type)) {
- error("%s: key has incorrect type %s", __func__, key_type(k));
+ int r;
+
+ if ((r = sshkey_drop_cert(k)) != 0) {
+ fatal_on_fatal_errors(r, __func__, 0);
+ error("%s: %s", __func__, ssh_err(r));
return -1;
}
- cert_free(k->cert);
- k->cert = NULL;
- k->type = key_type_plain(k->type);
return 0;
}
-/* Sign a certified key, (re-)generating the signed certblob. */
int
key_certify(Key *k, Key *ca)
{
- Buffer principals;
- u_char *ca_blob, *sig_blob, nonce[32];
- u_int i, ca_len, sig_len;
+ int r;
- if (k->cert == NULL) {
- error("%s: key lacks cert info", __func__);
+ if ((r = sshkey_certify(k, ca)) != 0) {
+ fatal_on_fatal_errors(r, __func__, 0);
+ error("%s: %s", __func__, ssh_err(r));
return -1;
}
+ return 0;
+}
- if (!key_is_cert(k)) {
- error("%s: certificate has unknown type %d", __func__,
- k->cert->type);
- return -1;
- }
+int
+key_cert_check_authority(const Key *k, int want_host, int require_principal,
+ const char *name, const char **reason)
+{
+ int r;
- if (!key_type_is_valid_ca(ca->type)) {
- error("%s: CA key has unsupported type %s", __func__,
- key_type(ca));
+ if ((r = sshkey_cert_check_authority(k, want_host, require_principal,
+ name, reason)) != 0) {
+ fatal_on_fatal_errors(r, __func__, 0);
+ error("%s: %s", __func__, ssh_err(r));
return -1;
}
+ return 0;
+}
- key_to_blob(ca, &ca_blob, &ca_len);
-
- buffer_clear(&k->cert->certblob);
- buffer_put_cstring(&k->cert->certblob, key_ssh_name(k));
-
- /* -v01 certs put nonce first */
- arc4random_buf(&nonce, sizeof(nonce));
- if (!key_cert_is_legacy(k))
- buffer_put_string(&k->cert->certblob, nonce, sizeof(nonce));
-
- /* XXX this substantially duplicates to_blob(); refactor */
- switch (k->type) {
#ifdef WITH_OPENSSL
- case KEY_DSA_CERT_V00:
- case KEY_DSA_CERT:
- buffer_put_bignum2(&k->cert->certblob, k->dsa->p);
- buffer_put_bignum2(&k->cert->certblob, k->dsa->q);
- buffer_put_bignum2(&k->cert->certblob, k->dsa->g);
- buffer_put_bignum2(&k->cert->certblob, k->dsa->pub_key);
- break;
-#ifdef OPENSSL_HAS_ECC
- case KEY_ECDSA_CERT:
- buffer_put_cstring(&k->cert->certblob,
- key_curve_nid_to_name(k->ecdsa_nid));
- buffer_put_ecpoint(&k->cert->certblob,
- EC_KEY_get0_group(k->ecdsa),
- EC_KEY_get0_public_key(k->ecdsa));
- break;
-#endif
- case KEY_RSA_CERT_V00:
- case KEY_RSA_CERT:
- buffer_put_bignum2(&k->cert->certblob, k->rsa->e);
- buffer_put_bignum2(&k->cert->certblob, k->rsa->n);
- break;
-#endif
- case KEY_ED25519_CERT:
- buffer_put_string(&k->cert->certblob,
- k->ed25519_pk, ED25519_PK_SZ);
- break;
- default:
- error("%s: key has incorrect type %s", __func__, key_type(k));
- buffer_clear(&k->cert->certblob);
- free(ca_blob);
- return -1;
- }
-
- /* -v01 certs have a serial number next */
- if (!key_cert_is_legacy(k))
- buffer_put_int64(&k->cert->certblob, k->cert->serial);
-
- buffer_put_int(&k->cert->certblob, k->cert->type);
- buffer_put_cstring(&k->cert->certblob, k->cert->key_id);
-
- buffer_init(&principals);
- for (i = 0; i < k->cert->nprincipals; i++)
- buffer_put_cstring(&principals, k->cert->principals[i]);
- buffer_put_string(&k->cert->certblob, buffer_ptr(&principals),
- buffer_len(&principals));
- buffer_free(&principals);
-
- buffer_put_int64(&k->cert->certblob, k->cert->valid_after);
- buffer_put_int64(&k->cert->certblob, k->cert->valid_before);
- buffer_put_string(&k->cert->certblob,
- buffer_ptr(&k->cert->critical), buffer_len(&k->cert->critical));
-
- /* -v01 certs have non-critical options here */
- if (!key_cert_is_legacy(k)) {
- buffer_put_string(&k->cert->certblob,
- buffer_ptr(&k->cert->extensions),
- buffer_len(&k->cert->extensions));
- }
-
- /* -v00 certs put the nonce at the end */
- if (key_cert_is_legacy(k))
- buffer_put_string(&k->cert->certblob, nonce, sizeof(nonce));
-
- buffer_put_string(&k->cert->certblob, NULL, 0); /* reserved */
- buffer_put_string(&k->cert->certblob, ca_blob, ca_len);
- free(ca_blob);
+int
+key_ec_validate_public(const EC_GROUP *group, const EC_POINT *public)
+{
+ int r;
- /* Sign the whole mess */
- if (key_sign(ca, &sig_blob, &sig_len, buffer_ptr(&k->cert->certblob),
- buffer_len(&k->cert->certblob)) != 0) {
- error("%s: signature operation failed", __func__);
- buffer_clear(&k->cert->certblob);
+ if ((r = sshkey_ec_validate_public(group, public)) != 0) {
+ fatal_on_fatal_errors(r, __func__, SSH_ERR_LIBCRYPTO_ERROR);
+ error("%s: %s", __func__, ssh_err(r));
return -1;
}
- /* Append signature and we are done */
- buffer_put_string(&k->cert->certblob, sig_blob, sig_len);
- free(sig_blob);
-
return 0;
}
int
-key_cert_check_authority(const Key *k, int want_host, int require_principal,
- const char *name, const char **reason)
+key_ec_validate_private(const EC_KEY *key)
{
- u_int i, principal_matches;
- time_t now = time(NULL);
-
- if (want_host) {
- if (k->cert->type != SSH2_CERT_TYPE_HOST) {
- *reason = "Certificate invalid: not a host certificate";
- return -1;
- }
- } else {
- if (k->cert->type != SSH2_CERT_TYPE_USER) {
- *reason = "Certificate invalid: not a user certificate";
- return -1;
- }
- }
- if (now < 0) {
- error("%s: system clock lies before epoch", __func__);
- *reason = "Certificate invalid: not yet valid";
- return -1;
- }
- if ((u_int64_t)now < k->cert->valid_after) {
- *reason = "Certificate invalid: not yet valid";
- return -1;
- }
- if ((u_int64_t)now >= k->cert->valid_before) {
- *reason = "Certificate invalid: expired";
+ int r;
+
+ if ((r = sshkey_ec_validate_private(key)) != 0) {
+ fatal_on_fatal_errors(r, __func__, SSH_ERR_LIBCRYPTO_ERROR);
+ error("%s: %s", __func__, ssh_err(r));
return -1;
}
- if (k->cert->nprincipals == 0) {
- if (require_principal) {
- *reason = "Certificate lacks principal list";
- return -1;
- }
- } else if (name != NULL) {
- principal_matches = 0;
- for (i = 0; i < k->cert->nprincipals; i++) {
- if (strcmp(name, k->cert->principals[i]) == 0) {
- principal_matches = 1;
- break;
- }
- }
- if (!principal_matches) {
- *reason = "Certificate invalid: name is not a listed "
- "principal";
- return -1;
- }
- }
return 0;
}
+#endif /* WITH_OPENSSL */
-int
-key_cert_is_legacy(const Key *k)
+void
+key_private_serialize(const Key *key, struct sshbuf *b)
{
- switch (k->type) {
- case KEY_DSA_CERT_V00:
- case KEY_RSA_CERT_V00:
- return 1;
- default:
- return 0;
- }
-}
+ int r;
-#ifdef WITH_OPENSSL
-/* XXX: these are really begging for a table-driven approach */
-int
-key_curve_name_to_nid(const char *name)
-{
-#ifdef OPENSSL_HAS_ECC
- if (strcmp(name, "nistp256") == 0)
- return NID_X9_62_prime256v1;
- else if (strcmp(name, "nistp384") == 0)
- return NID_secp384r1;
-# ifdef OPENSSL_HAS_NISTP521
- else if (strcmp(name, "nistp521") == 0)
- return NID_secp521r1;
-# endif
-#endif
-
- debug("%s: unsupported EC curve name \"%.100s\"", __func__, name);
- return -1;
+ if ((r = sshkey_private_serialize(key, b)) != 0)
+ fatal("%s: %s", __func__, ssh_err(r));
}
-u_int
-key_curve_nid_to_bits(int nid)
+Key *
+key_private_deserialize(struct sshbuf *blob)
{
- switch (nid) {
-#ifdef OPENSSL_HAS_ECC
- case NID_X9_62_prime256v1:
- return 256;
- case NID_secp384r1:
- return 384;
-# ifdef OPENSSL_HAS_NISTP521
- case NID_secp521r1:
- return 521;
-# endif
-#endif
- default:
- error("%s: unsupported EC curve nid %d", __func__, nid);
- return 0;
+ int r;
+ Key *ret = NULL;
+
+ if ((r = sshkey_private_deserialize(blob, &ret)) != 0) {
+ fatal_on_fatal_errors(r, __func__, SSH_ERR_LIBCRYPTO_ERROR);
+ error("%s: %s", __func__, ssh_err(r));
+ return NULL;
}
+ return ret;
}
-const char *
-key_curve_nid_to_name(int nid)
-{
-#ifdef OPENSSL_HAS_ECC
- if (nid == NID_X9_62_prime256v1)
- return "nistp256";
- else if (nid == NID_secp384r1)
- return "nistp384";
-# ifdef OPENSSL_HAS_NISTP521
- else if (nid == NID_secp521r1)
- return "nistp521";
-# endif
-#endif
- error("%s: unsupported EC curve nid %d", __func__, nid);
- return NULL;
-}
+/* authfile.c */
-#ifdef OPENSSL_HAS_ECC
int
-key_ec_nid_to_hash_alg(int nid)
+key_save_private(Key *key, const char *filename, const char *passphrase,
+ const char *comment, int force_new_format, const char *new_format_cipher,
+ int new_format_rounds)
{
- int kbits = key_curve_nid_to_bits(nid);
-
- if (kbits == 0)
- fatal("%s: invalid nid %d", __func__, nid);
- /* RFC5656 section 6.2.1 */
- if (kbits <= 256)
- return SSH_DIGEST_SHA256;
- else if (kbits <= 384)
- return SSH_DIGEST_SHA384;
- else
- return SSH_DIGEST_SHA512;
+ int r;
+
+ if ((r = sshkey_save_private(key, filename, passphrase, comment,
+ force_new_format, new_format_cipher, new_format_rounds)) != 0) {
+ fatal_on_fatal_errors(r, __func__, SSH_ERR_LIBCRYPTO_ERROR);
+ error("%s: %s", __func__, ssh_err(r));
+ return 0;
+ }
+ return 1;
}
int
-key_ec_validate_public(const EC_GROUP *group, const EC_POINT *public)
+key_load_file(int fd, const char *filename, struct sshbuf *blob)
{
- BN_CTX *bnctx;
- EC_POINT *nq = NULL;
- BIGNUM *order, *x, *y, *tmp;
- int ret = -1;
-
- if ((bnctx = BN_CTX_new()) == NULL)
- fatal("%s: BN_CTX_new failed", __func__);
- BN_CTX_start(bnctx);
-
- /*
- * We shouldn't ever hit this case because bignum_get_ecpoint()
- * refuses to load GF2m points.
- */
- if (EC_METHOD_get_field_type(EC_GROUP_method_of(group)) !=
- NID_X9_62_prime_field) {
- error("%s: group is not a prime field", __func__);
- goto out;
- }
-
- /* Q != infinity */
- if (EC_POINT_is_at_infinity(group, public)) {
- error("%s: received degenerate public key (infinity)",
- __func__);
- goto out;
- }
+ int r;
- if ((x = BN_CTX_get(bnctx)) == NULL ||
- (y = BN_CTX_get(bnctx)) == NULL ||
- (order = BN_CTX_get(bnctx)) == NULL ||
- (tmp = BN_CTX_get(bnctx)) == NULL)
- fatal("%s: BN_CTX_get failed", __func__);
-
- /* log2(x) > log2(order)/2, log2(y) > log2(order)/2 */
- if (EC_GROUP_get_order(group, order, bnctx) != 1)
- fatal("%s: EC_GROUP_get_order failed", __func__);
- if (EC_POINT_get_affine_coordinates_GFp(group, public,
- x, y, bnctx) != 1)
- fatal("%s: EC_POINT_get_affine_coordinates_GFp", __func__);
- if (BN_num_bits(x) <= BN_num_bits(order) / 2) {
- error("%s: public key x coordinate too small: "
- "bits(x) = %d, bits(order)/2 = %d", __func__,
- BN_num_bits(x), BN_num_bits(order) / 2);
- goto out;
- }
- if (BN_num_bits(y) <= BN_num_bits(order) / 2) {
- error("%s: public key y coordinate too small: "
- "bits(y) = %d, bits(order)/2 = %d", __func__,
- BN_num_bits(x), BN_num_bits(order) / 2);
- goto out;
+ if ((r = sshkey_load_file(fd, filename, blob)) != 0) {
+ fatal_on_fatal_errors(r, __func__, SSH_ERR_LIBCRYPTO_ERROR);
+ error("%s: %s", __func__, ssh_err(r));
+ return 0;
}
+ return 1;
+}
- /* nQ == infinity (n == order of subgroup) */
- if ((nq = EC_POINT_new(group)) == NULL)
- fatal("%s: BN_CTX_tmp failed", __func__);
- if (EC_POINT_mul(group, nq, NULL, public, order, bnctx) != 1)
- fatal("%s: EC_GROUP_mul failed", __func__);
- if (EC_POINT_is_at_infinity(group, nq) != 1) {
- error("%s: received degenerate public key (nQ != infinity)",
- __func__);
- goto out;
- }
+Key *
+key_load_cert(const char *filename)
+{
+ int r;
+ Key *ret = NULL;
- /* x < order - 1, y < order - 1 */
- if (!BN_sub(tmp, order, BN_value_one()))
- fatal("%s: BN_sub failed", __func__);
- if (BN_cmp(x, tmp) >= 0) {
- error("%s: public key x coordinate >= group order - 1",
- __func__);
- goto out;
- }
- if (BN_cmp(y, tmp) >= 0) {
- error("%s: public key y coordinate >= group order - 1",
- __func__);
- goto out;
+ if ((r = sshkey_load_cert(filename, &ret)) != 0) {
+ fatal_on_fatal_errors(r, __func__, SSH_ERR_LIBCRYPTO_ERROR);
+ if (r == SSH_ERR_SYSTEM_ERROR && errno == ENOENT)
+ debug("%s: %s", __func__, ssh_err(r));
+ else
+ error("%s: %s", __func__, ssh_err(r));
+ return NULL;
}
- ret = 0;
- out:
- BN_CTX_free(bnctx);
- EC_POINT_free(nq);
return ret;
+
}
-int
-key_ec_validate_private(const EC_KEY *key)
+Key *
+key_load_public(const char *filename, char **commentp)
{
- BN_CTX *bnctx;
- BIGNUM *order, *tmp;
- int ret = -1;
-
- if ((bnctx = BN_CTX_new()) == NULL)
- fatal("%s: BN_CTX_new failed", __func__);
- BN_CTX_start(bnctx);
-
- if ((order = BN_CTX_get(bnctx)) == NULL ||
- (tmp = BN_CTX_get(bnctx)) == NULL)
- fatal("%s: BN_CTX_get failed", __func__);
-
- /* log2(private) > log2(order)/2 */
- if (EC_GROUP_get_order(EC_KEY_get0_group(key), order, bnctx) != 1)
- fatal("%s: EC_GROUP_get_order failed", __func__);
- if (BN_num_bits(EC_KEY_get0_private_key(key)) <=
- BN_num_bits(order) / 2) {
- error("%s: private key too small: "
- "bits(y) = %d, bits(order)/2 = %d", __func__,
- BN_num_bits(EC_KEY_get0_private_key(key)),
- BN_num_bits(order) / 2);
- goto out;
- }
+ int r;
+ Key *ret = NULL;
- /* private < order - 1 */
- if (!BN_sub(tmp, order, BN_value_one()))
- fatal("%s: BN_sub failed", __func__);
- if (BN_cmp(EC_KEY_get0_private_key(key), tmp) >= 0) {
- error("%s: private key >= group order - 1", __func__);
- goto out;
+ if ((r = sshkey_load_public(filename, &ret, commentp)) != 0) {
+ fatal_on_fatal_errors(r, __func__, SSH_ERR_LIBCRYPTO_ERROR);
+ if (r == SSH_ERR_SYSTEM_ERROR && errno == ENOENT)
+ debug("%s: %s", __func__, ssh_err(r));
+ else
+ error("%s: %s", __func__, ssh_err(r));
+ return NULL;
}
- ret = 0;
- out:
- BN_CTX_free(bnctx);
return ret;
}
-#endif
-#if defined(DEBUG_KEXECDH) || defined(DEBUG_PK)
-void
-key_dump_ec_point(const EC_GROUP *group, const EC_POINT *point)
-{
- BIGNUM *x, *y;
- BN_CTX *bnctx;
-
- if (point == NULL) {
- fputs("point=(NULL)\n", stderr);
- return;
+Key *
+key_load_private(const char *path, const char *passphrase,
+ char **commentp)
+{
+ int r;
+ Key *ret = NULL;
+
+ if ((r = sshkey_load_private(path, passphrase, &ret, commentp)) != 0) {
+ fatal_on_fatal_errors(r, __func__, SSH_ERR_LIBCRYPTO_ERROR);
+ if (r == SSH_ERR_SYSTEM_ERROR && errno == ENOENT)
+ debug("%s: %s", __func__, ssh_err(r));
+ else
+ error("%s: %s", __func__, ssh_err(r));
+ return NULL;
}
- if ((bnctx = BN_CTX_new()) == NULL)
- fatal("%s: BN_CTX_new failed", __func__);
- BN_CTX_start(bnctx);
- if ((x = BN_CTX_get(bnctx)) == NULL || (y = BN_CTX_get(bnctx)) == NULL)
- fatal("%s: BN_CTX_get failed", __func__);
- if (EC_METHOD_get_field_type(EC_GROUP_method_of(group)) !=
- NID_X9_62_prime_field)
- fatal("%s: group is not a prime field", __func__);
- if (EC_POINT_get_affine_coordinates_GFp(group, point, x, y, bnctx) != 1)
- fatal("%s: EC_POINT_get_affine_coordinates_GFp", __func__);
- fputs("x=", stderr);
- BN_print_fp(stderr, x);
- fputs("\ny=", stderr);
- BN_print_fp(stderr, y);
- fputs("\n", stderr);
- BN_CTX_free(bnctx);
+ return ret;
}
-void
-key_dump_ec_key(const EC_KEY *key)
-{
- const BIGNUM *exponent;
-
- key_dump_ec_point(EC_KEY_get0_group(key), EC_KEY_get0_public_key(key));
- fputs("exponent=", stderr);
- if ((exponent = EC_KEY_get0_private_key(key)) == NULL)
- fputs("(NULL)", stderr);
- else
- BN_print_fp(stderr, EC_KEY_get0_private_key(key));
- fputs("\n", stderr);
+Key *
+key_load_private_cert(int type, const char *filename, const char *passphrase,
+ int *perm_ok)
+{
+ int r;
+ Key *ret = NULL;
+
+ if ((r = sshkey_load_private_cert(type, filename, passphrase,
+ &ret, perm_ok)) != 0) {
+ fatal_on_fatal_errors(r, __func__, SSH_ERR_LIBCRYPTO_ERROR);
+ if (r == SSH_ERR_SYSTEM_ERROR && errno == ENOENT)
+ debug("%s: %s", __func__, ssh_err(r));
+ else
+ error("%s: %s", __func__, ssh_err(r));
+ return NULL;
+ }
+ return ret;
}
-#endif /* defined(DEBUG_KEXECDH) || defined(DEBUG_PK) */
-#endif /* OPENSSL_HAS_ECC */
-void
-key_private_serialize(const Key *key, Buffer *b)
-{
- buffer_put_cstring(b, key_ssh_name(key));
- switch (key->type) {
-#ifdef WITH_OPENSSL
- case KEY_RSA:
- buffer_put_bignum2(b, key->rsa->n);
- buffer_put_bignum2(b, key->rsa->e);
- buffer_put_bignum2(b, key->rsa->d);
- buffer_put_bignum2(b, key->rsa->iqmp);
- buffer_put_bignum2(b, key->rsa->p);
- buffer_put_bignum2(b, key->rsa->q);
- break;
- case KEY_RSA_CERT_V00:
- case KEY_RSA_CERT:
- if (key->cert == NULL || buffer_len(&key->cert->certblob) == 0)
- fatal("%s: no cert/certblob", __func__);
- buffer_put_string(b, buffer_ptr(&key->cert->certblob),
- buffer_len(&key->cert->certblob));
- buffer_put_bignum2(b, key->rsa->d);
- buffer_put_bignum2(b, key->rsa->iqmp);
- buffer_put_bignum2(b, key->rsa->p);
- buffer_put_bignum2(b, key->rsa->q);
- break;
- case KEY_DSA:
- buffer_put_bignum2(b, key->dsa->p);
- buffer_put_bignum2(b, key->dsa->q);
- buffer_put_bignum2(b, key->dsa->g);
- buffer_put_bignum2(b, key->dsa->pub_key);
- buffer_put_bignum2(b, key->dsa->priv_key);
- break;
- case KEY_DSA_CERT_V00:
- case KEY_DSA_CERT:
- if (key->cert == NULL || buffer_len(&key->cert->certblob) == 0)
- fatal("%s: no cert/certblob", __func__);
- buffer_put_string(b, buffer_ptr(&key->cert->certblob),
- buffer_len(&key->cert->certblob));
- buffer_put_bignum2(b, key->dsa->priv_key);
- break;
-#ifdef OPENSSL_HAS_ECC
- case KEY_ECDSA:
- buffer_put_cstring(b, key_curve_nid_to_name(key->ecdsa_nid));
- buffer_put_ecpoint(b, EC_KEY_get0_group(key->ecdsa),
- EC_KEY_get0_public_key(key->ecdsa));
- buffer_put_bignum2(b, EC_KEY_get0_private_key(key->ecdsa));
- break;
- case KEY_ECDSA_CERT:
- if (key->cert == NULL || buffer_len(&key->cert->certblob) == 0)
- fatal("%s: no cert/certblob", __func__);
- buffer_put_string(b, buffer_ptr(&key->cert->certblob),
- buffer_len(&key->cert->certblob));
- buffer_put_bignum2(b, EC_KEY_get0_private_key(key->ecdsa));
- break;
-#endif /* OPENSSL_HAS_ECC */
- case KEY_ED25519:
- buffer_put_string(b, key->ed25519_pk, ED25519_PK_SZ);
- buffer_put_string(b, key->ed25519_sk, ED25519_SK_SZ);
- break;
-#endif
-#endif
- case KEY_ED25519_CERT:
- if (key->cert == NULL || buffer_len(&key->cert->certblob) == 0)
- fatal("%s: no cert/certblob", __func__);
- buffer_put_string(b, buffer_ptr(&key->cert->certblob),
- buffer_len(&key->cert->certblob));
- buffer_put_string(b, key->ed25519_pk, ED25519_PK_SZ);
- buffer_put_string(b, key->ed25519_sk, ED25519_SK_SZ);
- break;
+Key *
+key_load_private_type(int type, const char *filename, const char *passphrase,
+ char **commentp, int *perm_ok)
+{
+ int r;
+ Key *ret = NULL;
+
+ if ((r = sshkey_load_private_type(type, filename, passphrase,
+ &ret, commentp, perm_ok)) != 0) {
+ fatal_on_fatal_errors(r, __func__, SSH_ERR_LIBCRYPTO_ERROR);
+ if ((r == SSH_ERR_SYSTEM_ERROR && errno == ENOENT) ||
+ (r == SSH_ERR_KEY_WRONG_PASSPHRASE))
+ debug("%s: %s", __func__, ssh_err(r));
+ else
+ error("%s: %s", __func__, ssh_err(r));
+ return NULL;
}
+ return ret;
}
+#ifdef WITH_OPENSSL
Key *
-key_private_deserialize(Buffer *blob)
+key_load_private_pem(int fd, int type, const char *passphrase,
+ char **commentp)
{
- char *type_name;
- Key *k = NULL;
- u_char *cert;
- u_int len, pklen, sklen;
- int type;
-#if defined(WITH_OPENSSL) && defined(OPENSSL_HAS_ECC)
- char *curve;
- BIGNUM *exponent;
- EC_POINT *q;
-#endif
-
- type_name = buffer_get_string(blob, NULL);
- type = key_type_from_name(type_name);
- switch (type) {
-#ifdef WITH_OPENSSL
- case KEY_DSA:
- k = key_new_private(type);
- buffer_get_bignum2(blob, k->dsa->p);
- buffer_get_bignum2(blob, k->dsa->q);
- buffer_get_bignum2(blob, k->dsa->g);
- buffer_get_bignum2(blob, k->dsa->pub_key);
- buffer_get_bignum2(blob, k->dsa->priv_key);
- break;
- case KEY_DSA_CERT_V00:
- case KEY_DSA_CERT:
- cert = buffer_get_string(blob, &len);
- if ((k = key_from_blob(cert, len)) == NULL)
- fatal("Certificate parse failed");
- free(cert);
- key_add_private(k);
- buffer_get_bignum2(blob, k->dsa->priv_key);
- break;
-#ifdef OPENSSL_HAS_ECC
- case KEY_ECDSA:
- k = key_new_private(type);
- k->ecdsa_nid = key_ecdsa_nid_from_name(type_name);
- curve = buffer_get_string(blob, NULL);
- if (k->ecdsa_nid != key_curve_name_to_nid(curve))
- fatal("%s: curve names mismatch", __func__);
- free(curve);
- k->ecdsa = EC_KEY_new_by_curve_name(k->ecdsa_nid);
- if (k->ecdsa == NULL)
- fatal("%s: EC_KEY_new_by_curve_name failed",
- __func__);
- q = EC_POINT_new(EC_KEY_get0_group(k->ecdsa));
- if (q == NULL)
- fatal("%s: BN_new failed", __func__);
- if ((exponent = BN_new()) == NULL)
- fatal("%s: BN_new failed", __func__);
- buffer_get_ecpoint(blob,
- EC_KEY_get0_group(k->ecdsa), q);
- buffer_get_bignum2(blob, exponent);
- if (EC_KEY_set_public_key(k->ecdsa, q) != 1)
- fatal("%s: EC_KEY_set_public_key failed",
- __func__);
- if (EC_KEY_set_private_key(k->ecdsa, exponent) != 1)
- fatal("%s: EC_KEY_set_private_key failed",
- __func__);
- if (key_ec_validate_public(EC_KEY_get0_group(k->ecdsa),
- EC_KEY_get0_public_key(k->ecdsa)) != 0)
- fatal("%s: bad ECDSA public key", __func__);
- if (key_ec_validate_private(k->ecdsa) != 0)
- fatal("%s: bad ECDSA private key", __func__);
- BN_clear_free(exponent);
- EC_POINT_free(q);
- break;
- case KEY_ECDSA_CERT:
- cert = buffer_get_string(blob, &len);
- if ((k = key_from_blob(cert, len)) == NULL)
- fatal("Certificate parse failed");
- free(cert);
- key_add_private(k);
- if ((exponent = BN_new()) == NULL)
- fatal("%s: BN_new failed", __func__);
- buffer_get_bignum2(blob, exponent);
- if (EC_KEY_set_private_key(k->ecdsa, exponent) != 1)
- fatal("%s: EC_KEY_set_private_key failed",
- __func__);
- if (key_ec_validate_public(EC_KEY_get0_group(k->ecdsa),
- EC_KEY_get0_public_key(k->ecdsa)) != 0 ||
- key_ec_validate_private(k->ecdsa) != 0)
- fatal("%s: bad ECDSA key", __func__);
- BN_clear_free(exponent);
- break;
-#endif
- case KEY_RSA:
- k = key_new_private(type);
- buffer_get_bignum2(blob, k->rsa->n);
- buffer_get_bignum2(blob, k->rsa->e);
- buffer_get_bignum2(blob, k->rsa->d);
- buffer_get_bignum2(blob, k->rsa->iqmp);
- buffer_get_bignum2(blob, k->rsa->p);
- buffer_get_bignum2(blob, k->rsa->q);
-
- /* Generate additional parameters */
- rsa_generate_additional_parameters(k->rsa);
- break;
- case KEY_RSA_CERT_V00:
- case KEY_RSA_CERT:
- cert = buffer_get_string(blob, &len);
- if ((k = key_from_blob(cert, len)) == NULL)
- fatal("Certificate parse failed");
- free(cert);
- key_add_private(k);
- buffer_get_bignum2(blob, k->rsa->d);
- buffer_get_bignum2(blob, k->rsa->iqmp);
- buffer_get_bignum2(blob, k->rsa->p);
- buffer_get_bignum2(blob, k->rsa->q);
- break;
-#endif
-#endif
- case KEY_ED25519:
- k = key_new_private(type);
- k->ed25519_pk = buffer_get_string(blob, &pklen);
- k->ed25519_sk = buffer_get_string(blob, &sklen);
- if (pklen != ED25519_PK_SZ)
- fatal("%s: ed25519 pklen %d != %d",
- __func__, pklen, ED25519_PK_SZ);
- if (sklen != ED25519_SK_SZ)
- fatal("%s: ed25519 sklen %d != %d",
- __func__, sklen, ED25519_SK_SZ);
- break;
- case KEY_ED25519_CERT:
- cert = buffer_get_string(blob, &len);
- if ((k = key_from_blob(cert, len)) == NULL)
- fatal("Certificate parse failed");
- free(cert);
- key_add_private(k);
- k->ed25519_pk = buffer_get_string(blob, &pklen);
- k->ed25519_sk = buffer_get_string(blob, &sklen);
- if (pklen != ED25519_PK_SZ)
- fatal("%s: ed25519 pklen %d != %d",
- __func__, pklen, ED25519_PK_SZ);
- if (sklen != ED25519_SK_SZ)
- fatal("%s: ed25519 sklen %d != %d",
- __func__, sklen, ED25519_SK_SZ);
- break;
- default:
- free(type_name);
- buffer_clear(blob);
+ int r;
+ Key *ret = NULL;
+
+ if ((r = sshkey_load_private_pem(fd, type, passphrase,
+ &ret, commentp)) != 0) {
+ fatal_on_fatal_errors(r, __func__, SSH_ERR_LIBCRYPTO_ERROR);
+ error("%s: %s", __func__, ssh_err(r));
return NULL;
}
- free(type_name);
+ return ret;
+}
+#endif /* WITH_OPENSSL */
- /* enable blinding */
- switch (k->type) {
-#ifdef WITH_OPENSSL
- case KEY_RSA:
- case KEY_RSA_CERT_V00:
- case KEY_RSA_CERT:
- case KEY_RSA1:
- if (RSA_blinding_on(k->rsa, NULL) != 1) {
- error("%s: RSA_blinding_on failed", __func__);
- key_free(k);
- return NULL;
- }
- break;
-#endif
+int
+key_perm_ok(int fd, const char *filename)
+{
+ return sshkey_perm_ok(fd, filename) == 0 ? 1 : 0;
+}
+
+int
+key_in_file(Key *key, const char *filename, int strict_type)
+{
+ int r;
+
+ if ((r = sshkey_in_file(key, filename, strict_type)) != 0) {
+ fatal_on_fatal_errors(r, __func__, SSH_ERR_LIBCRYPTO_ERROR);
+ if (r == SSH_ERR_SYSTEM_ERROR && errno == ENOENT)
+ return 0;
+ error("%s: %s", __func__, ssh_err(r));
+ return r == SSH_ERR_KEY_NOT_FOUND ? 0 : -1;
}
- return k;
+ return 1;
}