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authordjm@openbsd.org <djm@openbsd.org>2018-09-13 02:08:33 +0000
committerDamien Miller <djm@mindrot.org>2018-09-13 12:12:33 +1000
commit482d23bcacdd3664f21cc82a5135f66fc598275f (patch)
tree362f697a94da0a765d1dabcfbf33370b2a4df121
parentd70d061828730a56636ab6f1f24fe4a8ccefcfc1 (diff)
upstream: hold our collective noses and use the openssl-1.1.x API in
OpenSSH; feedback and ok tb@ jsing@ markus@ OpenBSD-Commit-ID: cacbcac87ce5da0d3ca7ef1b38a6f7fb349e4417
-rw-r--r--auth2.c4
-rw-r--r--cipher.c16
-rw-r--r--cipher.h4
-rw-r--r--dh.c60
-rw-r--r--dh.h2
-rw-r--r--digest-openssl.c26
-rw-r--r--kexdhc.c15
-rw-r--r--kexdhs.c11
-rw-r--r--kexgexc.c18
-rw-r--r--kexgexs.c21
-rw-r--r--monitor.c6
-rw-r--r--ssh-dss.c26
-rw-r--r--ssh-ecdsa.c23
-rw-r--r--ssh-keygen.c61
-rw-r--r--ssh-pkcs11-client.c12
-rw-r--r--ssh-pkcs11.c55
-rw-r--r--ssh-rsa.c47
-rw-r--r--sshd.c6
-rw-r--r--sshkey.c637
-rw-r--r--sshkey.h7
20 files changed, 619 insertions, 438 deletions
diff --git a/auth2.c b/auth2.c
index ab879589..4d19957a 100644
--- a/auth2.c
+++ b/auth2.c
@@ -706,7 +706,7 @@ auth2_record_key(Authctxt *authctxt, int authenticated,
struct sshkey **tmp, *dup;
int r;
- if ((r = sshkey_demote(key, &dup)) != 0)
+ if ((r = sshkey_from_private(key, &dup)) != 0)
fatal("%s: copy key: %s", __func__, ssh_err(r));
sshkey_free(authctxt->auth_method_key);
authctxt->auth_method_key = dup;
@@ -715,7 +715,7 @@ auth2_record_key(Authctxt *authctxt, int authenticated,
return;
/* If authenticated, make sure we don't accept this key again */
- if ((r = sshkey_demote(key, &dup)) != 0)
+ if ((r = sshkey_from_private(key, &dup)) != 0)
fatal("%s: copy key: %s", __func__, ssh_err(r));
if (authctxt->nprev_keys >= INT_MAX ||
(tmp = recallocarray(authctxt->prev_keys, authctxt->nprev_keys,
diff --git a/cipher.c b/cipher.c
index a72682a8..df43826e 100644
--- a/cipher.c
+++ b/cipher.c
@@ -446,7 +446,7 @@ cipher_get_keyiv_len(const struct sshcipher_ctx *cc)
}
int
-cipher_get_keyiv(struct sshcipher_ctx *cc, u_char *iv, u_int len)
+cipher_get_keyiv(struct sshcipher_ctx *cc, u_char *iv, size_t len)
{
#ifdef WITH_OPENSSL
const struct sshcipher *c = cc->cipher;
@@ -473,7 +473,7 @@ cipher_get_keyiv(struct sshcipher_ctx *cc, u_char *iv, u_int len)
return 0;
else if (evplen < 0)
return SSH_ERR_LIBCRYPTO_ERROR;
- if ((u_int)evplen != len)
+ if ((size_t)evplen != len)
return SSH_ERR_INVALID_ARGUMENT;
#ifndef OPENSSL_HAVE_EVPCTR
if (c->evptype == evp_aes_128_ctr)
@@ -484,14 +484,14 @@ cipher_get_keyiv(struct sshcipher_ctx *cc, u_char *iv, u_int len)
if (!EVP_CIPHER_CTX_ctrl(cc->evp, EVP_CTRL_GCM_IV_GEN,
len, iv))
return SSH_ERR_LIBCRYPTO_ERROR;
- } else
- memcpy(iv, cc->evp->iv, len);
+ } else if (!EVP_CIPHER_CTX_get_iv(cc->evp, iv, len))
+ return SSH_ERR_LIBCRYPTO_ERROR;
#endif
return 0;
}
int
-cipher_set_keyiv(struct sshcipher_ctx *cc, const u_char *iv)
+cipher_set_keyiv(struct sshcipher_ctx *cc, const u_char *iv, size_t len)
{
#ifdef WITH_OPENSSL
const struct sshcipher *c = cc->cipher;
@@ -507,6 +507,8 @@ cipher_set_keyiv(struct sshcipher_ctx *cc, const u_char *iv)
evplen = EVP_CIPHER_CTX_iv_length(cc->evp);
if (evplen <= 0)
return SSH_ERR_LIBCRYPTO_ERROR;
+ if ((size_t)evplen != len)
+ return SSH_ERR_INVALID_ARGUMENT;
#ifndef OPENSSL_HAVE_EVPCTR
/* XXX iv arg is const, but ssh_aes_ctr_iv isn't */
if (c->evptype == evp_aes_128_ctr)
@@ -518,8 +520,8 @@ cipher_set_keyiv(struct sshcipher_ctx *cc, const u_char *iv)
if (!EVP_CIPHER_CTX_ctrl(cc->evp,
EVP_CTRL_GCM_SET_IV_FIXED, -1, (void *)iv))
return SSH_ERR_LIBCRYPTO_ERROR;
- } else
- memcpy(cc->evp->iv, iv, evplen);
+ } else if (!EVP_CIPHER_CTX_set_iv(cc->evp, iv, evplen))
+ return SSH_ERR_LIBCRYPTO_ERROR;
#endif
return 0;
}
diff --git a/cipher.h b/cipher.h
index dc7ecf11..dc1571d2 100644
--- a/cipher.h
+++ b/cipher.h
@@ -68,8 +68,8 @@ u_int cipher_is_cbc(const struct sshcipher *);
u_int cipher_ctx_is_plaintext(struct sshcipher_ctx *);
-int cipher_get_keyiv(struct sshcipher_ctx *, u_char *, u_int);
-int cipher_set_keyiv(struct sshcipher_ctx *, const u_char *);
+int cipher_get_keyiv(struct sshcipher_ctx *, u_char *, size_t);
+int cipher_set_keyiv(struct sshcipher_ctx *, const u_char *, size_t);
int cipher_get_keyiv_len(const struct sshcipher_ctx *);
#endif /* CIPHER_H */
diff --git a/dh.c b/dh.c
index ac8d5a0a..d0d4527b 100644
--- a/dh.c
+++ b/dh.c
@@ -216,14 +216,17 @@ choose_dh(int min, int wantbits, int max)
/* diffie-hellman-groupN-sha1 */
int
-dh_pub_is_valid(DH *dh, BIGNUM *dh_pub)
+dh_pub_is_valid(const DH *dh, const BIGNUM *dh_pub)
{
int i;
int n = BN_num_bits(dh_pub);
int bits_set = 0;
BIGNUM *tmp;
+ const BIGNUM *dh_p;
- if (dh_pub->neg) {
+ DH_get0_pqg(dh, &dh_p, NULL, NULL);
+
+ if (BN_is_negative(dh_pub)) {
logit("invalid public DH value: negative");
return 0;
}
@@ -236,7 +239,7 @@ dh_pub_is_valid(DH *dh, BIGNUM *dh_pub)
error("%s: BN_new failed", __func__);
return 0;
}
- if (!BN_sub(tmp, dh->p, BN_value_one()) ||
+ if (!BN_sub(tmp, dh_p, BN_value_one()) ||
BN_cmp(dh_pub, tmp) != -1) { /* pub_exp > p-2 */
BN_clear_free(tmp);
logit("invalid public DH value: >= p-1");
@@ -247,14 +250,14 @@ dh_pub_is_valid(DH *dh, BIGNUM *dh_pub)
for (i = 0; i <= n; i++)
if (BN_is_bit_set(dh_pub, i))
bits_set++;
- debug2("bits set: %d/%d", bits_set, BN_num_bits(dh->p));
+ debug2("bits set: %d/%d", bits_set, BN_num_bits(dh_p));
/*
* if g==2 and bits_set==1 then computing log_g(dh_pub) is trivial
*/
if (bits_set < 4) {
logit("invalid public DH value (%d/%d)",
- bits_set, BN_num_bits(dh->p));
+ bits_set, BN_num_bits(dh_p));
return 0;
}
return 1;
@@ -264,9 +267,12 @@ int
dh_gen_key(DH *dh, int need)
{
int pbits;
+ const BIGNUM *dh_p, *pub_key;
+
+ DH_get0_pqg(dh, &dh_p, NULL, NULL);
- if (need < 0 || dh->p == NULL ||
- (pbits = BN_num_bits(dh->p)) <= 0 ||
+ if (need < 0 || dh_p == NULL ||
+ (pbits = BN_num_bits(dh_p)) <= 0 ||
need > INT_MAX / 2 || 2 * need > pbits)
return SSH_ERR_INVALID_ARGUMENT;
if (need < 256)
@@ -275,13 +281,14 @@ dh_gen_key(DH *dh, int need)
* Pollard Rho, Big step/Little Step attacks are O(sqrt(n)),
* so double requested need here.
*/
- dh->length = MINIMUM(need * 2, pbits - 1);
- if (DH_generate_key(dh) == 0 ||
- !dh_pub_is_valid(dh, dh->pub_key)) {
- BN_clear_free(dh->priv_key);
- dh->priv_key = NULL;
+ if (!DH_set_length(dh, MINIMUM(need * 2, pbits - 1)))
return SSH_ERR_LIBCRYPTO_ERROR;
- }
+
+ if (DH_generate_key(dh) == 0)
+ return SSH_ERR_LIBCRYPTO_ERROR;
+ DH_get0_key(dh, &pub_key, NULL);
+ if (!dh_pub_is_valid(dh, pub_key))
+ return SSH_ERR_INVALID_FORMAT;
return 0;
}
@@ -289,22 +296,27 @@ DH *
dh_new_group_asc(const char *gen, const char *modulus)
{
DH *dh;
+ BIGNUM *dh_p = NULL, *dh_g = NULL;
if ((dh = DH_new()) == NULL)
return NULL;
- if (BN_hex2bn(&dh->p, modulus) == 0 ||
- BN_hex2bn(&dh->g, gen) == 0) {
- DH_free(dh);
- return NULL;
- }
- return (dh);
+ if (BN_hex2bn(&dh_p, modulus) == 0 ||
+ BN_hex2bn(&dh_g, gen) == 0)
+ goto fail;
+ if (!DH_set0_pqg(dh, dh_p, NULL, dh_g))
+ goto fail;
+ return dh;
+ fail:
+ DH_free(dh);
+ BN_clear_free(dh_p);
+ BN_clear_free(dh_g);
+ return NULL;
}
/*
* This just returns the group, we still need to generate the exchange
* value.
*/
-
DH *
dh_new_group(BIGNUM *gen, BIGNUM *modulus)
{
@@ -312,10 +324,12 @@ dh_new_group(BIGNUM *gen, BIGNUM *modulus)
if ((dh = DH_new()) == NULL)
return NULL;
- dh->p = modulus;
- dh->g = gen;
+ if (!DH_set0_pqg(dh, modulus, NULL, gen)) {
+ DH_free(dh);
+ return NULL;
+ }
- return (dh);
+ return dh;
}
/* rfc2409 "Second Oakley Group" (1024 bits) */
diff --git a/dh.h b/dh.h
index bcd485cf..344b29e3 100644
--- a/dh.h
+++ b/dh.h
@@ -42,7 +42,7 @@ DH *dh_new_group18(void);
DH *dh_new_group_fallback(int);
int dh_gen_key(DH *, int);
-int dh_pub_is_valid(DH *, BIGNUM *);
+int dh_pub_is_valid(const DH *, const BIGNUM *);
u_int dh_estimate(int);
diff --git a/digest-openssl.c b/digest-openssl.c
index 27709992..da7ed72b 100644
--- a/digest-openssl.c
+++ b/digest-openssl.c
@@ -43,7 +43,7 @@
struct ssh_digest_ctx {
int alg;
- EVP_MD_CTX mdctx;
+ EVP_MD_CTX *mdctx;
};
struct ssh_digest {
@@ -106,7 +106,7 @@ ssh_digest_bytes(int alg)
size_t
ssh_digest_blocksize(struct ssh_digest_ctx *ctx)
{
- return EVP_MD_CTX_block_size(&ctx->mdctx);
+ return EVP_MD_CTX_block_size(ctx->mdctx);
}
struct ssh_digest_ctx *
@@ -118,11 +118,14 @@ ssh_digest_start(int alg)
if (digest == NULL || ((ret = calloc(1, sizeof(*ret))) == NULL))
return NULL;
ret->alg = alg;
- EVP_MD_CTX_init(&ret->mdctx);
- if (EVP_DigestInit_ex(&ret->mdctx, digest->mdfunc(), NULL) != 1) {
+ if ((ret->mdctx = EVP_MD_CTX_new()) == NULL) {
free(ret);
return NULL;
}
+ if (EVP_DigestInit_ex(ret->mdctx, digest->mdfunc(), NULL) != 1) {
+ ssh_digest_free(ret);
+ return NULL;
+ }
return ret;
}
@@ -132,7 +135,7 @@ ssh_digest_copy_state(struct ssh_digest_ctx *from, struct ssh_digest_ctx *to)
if (from->alg != to->alg)
return SSH_ERR_INVALID_ARGUMENT;
/* we have bcopy-style order while openssl has memcpy-style */
- if (!EVP_MD_CTX_copy_ex(&to->mdctx, &from->mdctx))
+ if (!EVP_MD_CTX_copy_ex(to->mdctx, from->mdctx))
return SSH_ERR_LIBCRYPTO_ERROR;
return 0;
}
@@ -140,7 +143,7 @@ ssh_digest_copy_state(struct ssh_digest_ctx *from, struct ssh_digest_ctx *to)
int
ssh_digest_update(struct ssh_digest_ctx *ctx, const void *m, size_t mlen)
{
- if (EVP_DigestUpdate(&ctx->mdctx, m, mlen) != 1)
+ if (EVP_DigestUpdate(ctx->mdctx, m, mlen) != 1)
return SSH_ERR_LIBCRYPTO_ERROR;
return 0;
}
@@ -161,7 +164,7 @@ ssh_digest_final(struct ssh_digest_ctx *ctx, u_char *d, size_t dlen)
return SSH_ERR_INVALID_ARGUMENT;
if (dlen < digest->digest_len) /* No truncation allowed */
return SSH_ERR_INVALID_ARGUMENT;
- if (EVP_DigestFinal_ex(&ctx->mdctx, d, &l) != 1)
+ if (EVP_DigestFinal_ex(ctx->mdctx, d, &l) != 1)
return SSH_ERR_LIBCRYPTO_ERROR;
if (l != digest->digest_len) /* sanity */
return SSH_ERR_INTERNAL_ERROR;
@@ -171,11 +174,10 @@ ssh_digest_final(struct ssh_digest_ctx *ctx, u_char *d, size_t dlen)
void
ssh_digest_free(struct ssh_digest_ctx *ctx)
{
- if (ctx != NULL) {
- EVP_MD_CTX_cleanup(&ctx->mdctx);
- explicit_bzero(ctx, sizeof(*ctx));
- free(ctx);
- }
+ if (ctx == NULL)
+ return;
+ EVP_MD_CTX_free(ctx->mdctx);
+ freezero(ctx, sizeof(*ctx));
}
int
diff --git a/kexdhc.c b/kexdhc.c
index 9a9f1ea7..a8b74247 100644
--- a/kexdhc.c
+++ b/kexdhc.c
@@ -56,6 +56,7 @@ kexdh_client(struct ssh *ssh)
{
struct kex *kex = ssh->kex;
int r;
+ const BIGNUM *pub_key;
/* generate and send 'e', client DH public key */
switch (kex->kex_type) {
@@ -81,15 +82,17 @@ kexdh_client(struct ssh *ssh)
goto out;
}
debug("sending SSH2_MSG_KEXDH_INIT");
- if ((r = dh_gen_key(kex->dh, kex->we_need * 8)) != 0 ||
- (r = sshpkt_start(ssh, SSH2_MSG_KEXDH_INIT)) != 0 ||
- (r = sshpkt_put_bignum2(ssh, kex->dh->pub_key)) != 0 ||
+ if ((r = dh_gen_key(kex->dh, kex->we_need * 8)) != 0)
+ goto out;
+ DH_get0_key(kex->dh, &pub_key, NULL);
+ if ((r = sshpkt_start(ssh, SSH2_MSG_KEXDH_INIT)) != 0 ||
+ (r = sshpkt_put_bignum2(ssh, pub_key)) != 0 ||
(r = sshpkt_send(ssh)) != 0)
goto out;
#ifdef DEBUG_KEXDH
DHparams_print_fp(stderr, kex->dh);
fprintf(stderr, "pub= ");
- BN_print_fp(stderr, kex->dh->pub_key);
+ BN_print_fp(stderr, pub_key);
fprintf(stderr, "\n");
#endif
debug("expecting SSH2_MSG_KEXDH_REPLY");
@@ -104,6 +107,7 @@ input_kex_dh(int type, u_int32_t seq, struct ssh *ssh)
{
struct kex *kex = ssh->kex;
BIGNUM *dh_server_pub = NULL, *shared_secret = NULL;
+ const BIGNUM *pub_key;
struct sshkey *server_host_key = NULL;
u_char *kbuf = NULL, *server_host_key_blob = NULL, *signature = NULL;
u_char hash[SSH_DIGEST_MAX_LENGTH];
@@ -168,6 +172,7 @@ input_kex_dh(int type, u_int32_t seq, struct ssh *ssh)
#endif
/* calc and verify H */
+ DH_get0_key(kex->dh, &pub_key, NULL);
hashlen = sizeof(hash);
if ((r = kex_dh_hash(
kex->hash_alg,
@@ -176,7 +181,7 @@ input_kex_dh(int type, u_int32_t seq, struct ssh *ssh)
sshbuf_ptr(kex->my), sshbuf_len(kex->my),
sshbuf_ptr(kex->peer), sshbuf_len(kex->peer),
server_host_key_blob, sbloblen,
- kex->dh->pub_key,
+ pub_key,
dh_server_pub,
shared_secret,
hash, &hashlen)) != 0)
diff --git a/kexdhs.c b/kexdhs.c
index 5dfca0a2..8367c6c3 100644
--- a/kexdhs.c
+++ b/kexdhs.c
@@ -95,6 +95,7 @@ input_kex_dh_init(int type, u_int32_t seq, struct ssh *ssh)
{
struct kex *kex = ssh->kex;
BIGNUM *shared_secret = NULL, *dh_client_pub = NULL;
+ const BIGNUM *pub_key;
struct sshkey *server_host_public, *server_host_private;
u_char *kbuf = NULL, *signature = NULL, *server_host_key_blob = NULL;
u_char hash[SSH_DIGEST_MAX_LENGTH];
@@ -121,6 +122,7 @@ input_kex_dh_init(int type, u_int32_t seq, struct ssh *ssh)
r = SSH_ERR_ALLOC_FAIL;
goto out;
}
+ DH_get0_key(kex->dh, &pub_key, NULL);
if ((r = sshpkt_get_bignum2(ssh, dh_client_pub)) != 0 ||
(r = sshpkt_get_end(ssh)) != 0)
goto out;
@@ -130,12 +132,9 @@ input_kex_dh_init(int type, u_int32_t seq, struct ssh *ssh)
BN_print_fp(stderr, dh_client_pub);
fprintf(stderr, "\n");
debug("bits %d", BN_num_bits(dh_client_pub));
-#endif
-
-#ifdef DEBUG_KEXDH
DHparams_print_fp(stderr, kex->dh);
fprintf(stderr, "pub= ");
- BN_print_fp(stderr, kex->dh->pub_key);
+ BN_print_fp(stderr, pub_key);
fprintf(stderr, "\n");
#endif
if (!dh_pub_is_valid(kex->dh, dh_client_pub)) {
@@ -171,7 +170,7 @@ input_kex_dh_init(int type, u_int32_t seq, struct ssh *ssh)
sshbuf_ptr(kex->my), sshbuf_len(kex->my),
server_host_key_blob, sbloblen,
dh_client_pub,
- kex->dh->pub_key,
+ pub_key,
shared_secret,
hash, &hashlen)) != 0)
goto out;
@@ -197,7 +196,7 @@ input_kex_dh_init(int type, u_int32_t seq, struct ssh *ssh)
/* send server hostkey, DH pubkey 'f' and signed H */
if ((r = sshpkt_start(ssh, SSH2_MSG_KEXDH_REPLY)) != 0 ||
(r = sshpkt_put_string(ssh, server_host_key_blob, sbloblen)) != 0 ||
- (r = sshpkt_put_bignum2(ssh, kex->dh->pub_key)) != 0 || /* f */
+ (r = sshpkt_put_bignum2(ssh, pub_key)) != 0 || /* f */
(r = sshpkt_put_string(ssh, signature, slen)) != 0 ||
(r = sshpkt_send(ssh)) != 0)
goto out;
diff --git a/kexgexc.c b/kexgexc.c
index 762a9a32..955bc837 100644
--- a/kexgexc.c
+++ b/kexgexc.c
@@ -93,6 +93,7 @@ input_kex_dh_gex_group(int type, u_int32_t seq, struct ssh *ssh)
{
struct kex *kex = ssh->kex;
BIGNUM *p = NULL, *g = NULL;
+ const BIGNUM *pub_key;
int r, bits;
debug("got SSH2_MSG_KEX_DH_GEX_GROUP");
@@ -118,16 +119,18 @@ input_kex_dh_gex_group(int type, u_int32_t seq, struct ssh *ssh)
p = g = NULL; /* belong to kex->dh now */
/* generate and send 'e', client DH public key */
- if ((r = dh_gen_key(kex->dh, kex->we_need * 8)) != 0 ||
- (r = sshpkt_start(ssh, SSH2_MSG_KEX_DH_GEX_INIT)) != 0 ||
- (r = sshpkt_put_bignum2(ssh, kex->dh->pub_key)) != 0 ||
+ if ((r = dh_gen_key(kex->dh, kex->we_need * 8)) != 0)
+ goto out;
+ DH_get0_key(kex->dh, &pub_key, NULL);
+ if ((r = sshpkt_start(ssh, SSH2_MSG_KEX_DH_GEX_INIT)) != 0 ||
+ (r = sshpkt_put_bignum2(ssh, pub_key)) != 0 ||
(r = sshpkt_send(ssh)) != 0)
goto out;
debug("SSH2_MSG_KEX_DH_GEX_INIT sent");
#ifdef DEBUG_KEXDH
DHparams_print_fp(stderr, kex->dh);
fprintf(stderr, "pub= ");
- BN_print_fp(stderr, kex->dh->pub_key);
+ BN_print_fp(stderr, pub_key);
fprintf(stderr, "\n");
#endif
ssh_dispatch_set(ssh, SSH2_MSG_KEX_DH_GEX_GROUP, NULL);
@@ -144,6 +147,7 @@ input_kex_dh_gex_reply(int type, u_int32_t seq, struct ssh *ssh)
{
struct kex *kex = ssh->kex;
BIGNUM *dh_server_pub = NULL, *shared_secret = NULL;
+ const BIGNUM *pub_key, *dh_p, *dh_g;
struct sshkey *server_host_key = NULL;
u_char *kbuf = NULL, *signature = NULL, *server_host_key_blob = NULL;
u_char hash[SSH_DIGEST_MAX_LENGTH];
@@ -211,6 +215,8 @@ input_kex_dh_gex_reply(int type, u_int32_t seq, struct ssh *ssh)
kex->min = kex->max = -1;
/* calc and verify H */
+ DH_get0_key(kex->dh, &pub_key, NULL);
+ DH_get0_pqg(kex->dh, &dh_p, NULL, &dh_g);
hashlen = sizeof(hash);
if ((r = kexgex_hash(
kex->hash_alg,
@@ -220,8 +226,8 @@ input_kex_dh_gex_reply(int type, u_int32_t seq, struct ssh *ssh)
sshbuf_ptr(kex->peer), sshbuf_len(kex->peer),
server_host_key_blob, sbloblen,
kex->min, kex->nbits, kex->max,
- kex->dh->p, kex->dh->g,
- kex->dh->pub_key,
+ dh_p, dh_g,
+ pub_key,
dh_server_pub,
shared_secret,
hash, &hashlen)) != 0)
diff --git a/kexgexs.c b/kexgexs.c
index f6983fd6..2a4aa7e8 100644
--- a/kexgexs.c
+++ b/kexgexs.c
@@ -72,6 +72,7 @@ input_kex_dh_gex_request(int type, u_int32_t seq, struct ssh *ssh)
struct kex *kex = ssh->kex;
int r;
u_int min = 0, max = 0, nbits = 0;
+ const BIGNUM *dh_p, *dh_g;
debug("SSH2_MSG_KEX_DH_GEX_REQUEST received");
if ((r = sshpkt_get_u32(ssh, &min)) != 0 ||
@@ -101,9 +102,10 @@ input_kex_dh_gex_request(int type, u_int32_t seq, struct ssh *ssh)
goto out;
}
debug("SSH2_MSG_KEX_DH_GEX_GROUP sent");
+ DH_get0_pqg(kex->dh, &dh_p, NULL, &dh_g);
if ((r = sshpkt_start(ssh, SSH2_MSG_KEX_DH_GEX_GROUP)) != 0 ||
- (r = sshpkt_put_bignum2(ssh, kex->dh->p)) != 0 ||
- (r = sshpkt_put_bignum2(ssh, kex->dh->g)) != 0 ||
+ (r = sshpkt_put_bignum2(ssh, dh_p)) != 0 ||
+ (r = sshpkt_put_bignum2(ssh, dh_g)) != 0 ||
(r = sshpkt_send(ssh)) != 0)
goto out;
@@ -123,6 +125,7 @@ input_kex_dh_gex_init(int type, u_int32_t seq, struct ssh *ssh)
{
struct kex *kex = ssh->kex;
BIGNUM *shared_secret = NULL, *dh_client_pub = NULL;
+ const BIGNUM *pub_key, *dh_p, *dh_g;
struct sshkey *server_host_public, *server_host_private;
u_char *kbuf = NULL, *signature = NULL, *server_host_key_blob = NULL;
u_char hash[SSH_DIGEST_MAX_LENGTH];
@@ -153,17 +156,17 @@ input_kex_dh_gex_init(int type, u_int32_t seq, struct ssh *ssh)
(r = sshpkt_get_end(ssh)) != 0)
goto out;
+ DH_get0_key(kex->dh, &pub_key, NULL);
+ DH_get0_pqg(kex->dh, &dh_p, NULL, &dh_g);
+
#ifdef DEBUG_KEXDH
fprintf(stderr, "dh_client_pub= ");
BN_print_fp(stderr, dh_client_pub);
fprintf(stderr, "\n");
debug("bits %d", BN_num_bits(dh_client_pub));
-#endif
-
-#ifdef DEBUG_KEXDH
DHparams_print_fp(stderr, kex->dh);
fprintf(stderr, "pub= ");
- BN_print_fp(stderr, kex->dh->pub_key);
+ BN_print_fp(stderr, pub_key);
fprintf(stderr, "\n");
#endif
if (!dh_pub_is_valid(kex->dh, dh_client_pub)) {
@@ -199,9 +202,9 @@ input_kex_dh_gex_init(int type, u_int32_t seq, struct ssh *ssh)
sshbuf_ptr(kex->my), sshbuf_len(kex->my),
server_host_key_blob, sbloblen,
kex->min, kex->nbits, kex->max,
- kex->dh->p, kex->dh->g,
+ dh_p, dh_g,
dh_client_pub,
- kex->dh->pub_key,
+ pub_key,
shared_secret,
hash, &hashlen)) != 0)
goto out;
@@ -227,7 +230,7 @@ input_kex_dh_gex_init(int type, u_int32_t seq, struct ssh *ssh)
/* send server hostkey, DH pubkey 'f' and signed H */
if ((r = sshpkt_start(ssh, SSH2_MSG_KEX_DH_GEX_REPLY)) != 0 ||
(r = sshpkt_put_string(ssh, server_host_key_blob, sbloblen)) != 0 ||
- (r = sshpkt_put_bignum2(ssh, kex->dh->pub_key)) != 0 || /* f */
+ (r = sshpkt_put_bignum2(ssh, pub_key)) != 0 || /* f */
(r = sshpkt_put_string(ssh, signature, slen)) != 0 ||
(r = sshpkt_send(ssh)) != 0)
goto out;
diff --git a/monitor.c b/monitor.c
index d4b4b047..b30813b4 100644
--- a/monitor.c
+++ b/monitor.c
@@ -566,6 +566,7 @@ int
mm_answer_moduli(int sock, struct sshbuf *m)
{
DH *dh;
+ const BIGNUM *dh_p, *dh_g;
int r;
u_int min, want, max;
@@ -590,9 +591,10 @@ mm_answer_moduli(int sock, struct sshbuf *m)
return (0);
} else {
/* Send first bignum */
+ DH_get0_pqg(dh, &dh_p, NULL, &dh_g);
if ((r = sshbuf_put_u8(m, 1)) != 0 ||
- (r = sshbuf_put_bignum2(m, dh->p)) != 0 ||
- (r = sshbuf_put_bignum2(m, dh->g)) != 0)
+ (r = sshbuf_put_bignum2(m, dh_p)) != 0 ||
+ (r = sshbuf_put_bignum2(m, dh_g)) != 0)
fatal("%s: buffer error: %s", __func__, ssh_err(r));
DH_free(dh);
diff --git a/ssh-dss.c b/ssh-dss.c
index 9f832ee2..631b1571 100644
--- a/ssh-dss.c
+++ b/ssh-dss.c
@@ -51,6 +51,7 @@ ssh_dss_sign(const struct sshkey *key, u_char **sigp, size_t *lenp,
const u_char *data, size_t datalen, u_int compat)
{
DSA_SIG *sig = NULL;
+ const BIGNUM *sig_r, *sig_s;
u_char digest[SSH_DIGEST_MAX_LENGTH], sigblob[SIGBLOB_LEN];
size_t rlen, slen, len, dlen = ssh_digest_bytes(SSH_DIGEST_SHA1);
struct sshbuf *b = NULL;
@@ -76,15 +77,16 @@ ssh_dss_sign(const struct sshkey *key, u_char **sigp, size_t *lenp,
goto out;
}
- rlen = BN_num_bytes(sig->r);
- slen = BN_num_bytes(sig->s);
+ DSA_SIG_get0(sig, &sig_r, &sig_s);
+ rlen = BN_num_bytes(sig_r);
+ slen = BN_num_bytes(sig_s);
if (rlen > INTBLOB_LEN || slen > INTBLOB_LEN) {
ret = SSH_ERR_INTERNAL_ERROR;
goto out;
}
explicit_bzero(sigblob, SIGBLOB_LEN);
- BN_bn2bin(sig->r, sigblob + SIGBLOB_LEN - INTBLOB_LEN - rlen);
- BN_bn2bin(sig->s, sigblob + SIGBLOB_LEN - slen);
+ BN_bn2bin(sig_r, sigblob + SIGBLOB_LEN - INTBLOB_LEN - rlen);
+ BN_bn2bin(sig_s, sigblob + SIGBLOB_LEN - slen);
if ((b = sshbuf_new()) == NULL) {
ret = SSH_ERR_ALLOC_FAIL;
@@ -118,6 +120,7 @@ ssh_dss_verify(const struct sshkey *key,
const u_char *data, size_t datalen, u_int compat)
{
DSA_SIG *sig = NULL;
+ BIGNUM *sig_r = NULL, *sig_s = NULL;
u_char digest[SSH_DIGEST_MAX_LENGTH], *sigblob = NULL;
size_t len, dlen = ssh_digest_bytes(SSH_DIGEST_SHA1);
int ret = SSH_ERR_INTERNAL_ERROR;
@@ -155,16 +158,21 @@ ssh_dss_verify(const struct sshkey *key,
/* parse signature */
if ((sig = DSA_SIG_new()) == NULL ||
- (sig->r = BN_new()) == NULL ||
- (sig->s = BN_new()) == NULL) {
+ (sig_r = BN_new()) == NULL ||
+ (sig_s = BN_new()) == NULL) {
ret = SSH_ERR_ALLOC_FAIL;
goto out;
}
- if ((BN_bin2bn(sigblob, INTBLOB_LEN, sig->r) == NULL) ||
- (BN_bin2bn(sigblob+ INTBLOB_LEN, INTBLOB_LEN, sig->s) == NULL)) {
+ if ((BN_bin2bn(sigblob, INTBLOB_LEN, sig_r) == NULL) ||
+ (BN_bin2bn(sigblob + INTBLOB_LEN, INTBLOB_LEN, sig_s) == NULL)) {
ret = SSH_ERR_LIBCRYPTO_ERROR;
goto out;
}
+ if (!DSA_SIG_set0(sig, sig_r, sig_s)) {
+ ret = SSH_ERR_LIBCRYPTO_ERROR;
+ goto out;
+ }
+ sig_r = sig_s = NULL; /* transferred */
/* sha1 the data */
if ((ret = ssh_digest_memory(SSH_DIGEST_SHA1, data, datalen,
@@ -186,6 +194,8 @@ ssh_dss_verify(const struct sshkey *key,
out:
explicit_bzero(digest, sizeof(digest));
DSA_SIG_free(sig);
+ BN_clear_free(sig_r);
+ BN_clear_free(sig_s);
sshbuf_free(b);
free(ktype);
if (sigblob != NULL) {
diff --git a/ssh-ecdsa.c b/ssh-ecdsa.c
index 3d3b78d7..9e92af04 100644
--- a/ssh-ecdsa.c
+++ b/ssh-ecdsa.c
@@ -49,6 +49,7 @@ ssh_ecdsa_sign(const struct sshkey *key, u_char **sigp, size_t *lenp,
const u_char *data, size_t datalen, u_int compat)
{
ECDSA_SIG *sig = NULL;
+ const BIGNUM *sig_r, *sig_s;
int hash_alg;
u_char digest[SSH_DIGEST_MAX_LENGTH];
size_t len, dlen;
@@ -80,8 +81,9 @@ ssh_ecdsa_sign(const struct sshkey *key, u_char **sigp, size_t *lenp,
ret = SSH_ERR_ALLOC_FAIL;
goto out;
}
- if ((ret = sshbuf_put_bignum2(bb, sig->r)) != 0 ||
- (ret = sshbuf_put_bignum2(bb, sig->s)) != 0)
+ ECDSA_SIG_get0(sig, &sig_r, &sig_s);
+ if ((ret = sshbuf_put_bignum2(bb, sig_r)) != 0 ||
+ (ret = sshbuf_put_bignum2(bb, sig_s)) != 0)
goto out;
if ((ret = sshbuf_put_cstring(b, sshkey_ssh_name_plain(key))) != 0 ||
(ret = sshbuf_put_stringb(b, bb)) != 0)
@@ -112,6 +114,7 @@ ssh_ecdsa_verify(const struct sshkey *key,
const u_char *data, size_t datalen, u_int compat)
{
ECDSA_SIG *sig = NULL;
+ BIGNUM *sig_r = NULL, *sig_s = NULL;
int hash_alg;
u_char digest[SSH_DIGEST_MAX_LENGTH];
size_t dlen;
@@ -146,15 +149,23 @@ ssh_ecdsa_verify(const struct sshkey *key,
}
/* parse signature */
- if ((sig = ECDSA_SIG_new()) == NULL) {
+ if ((sig = ECDSA_SIG_new()) == NULL ||
+ (sig_r = BN_new()) == NULL ||
+ (sig_s = BN_new()) == NULL) {
ret = SSH_ERR_ALLOC_FAIL;
goto out;
}
- if (sshbuf_get_bignum2(sigbuf, sig->r) != 0 ||
- sshbuf_get_bignum2(sigbuf, sig->s) != 0) {
+ if (sshbuf_get_bignum2(sigbuf, sig_r) != 0 ||
+ sshbuf_get_bignum2(sigbuf, sig_s) != 0) {
ret = SSH_ERR_INVALID_FORMAT;
goto out;
}
+ if (!ECDSA_SIG_set0(sig, sig_r, sig_s)) {
+ ret = SSH_ERR_LIBCRYPTO_ERROR;
+ goto out;
+ }
+ sig_r = sig_s = NULL; /* transferred */
+
if (sshbuf_len(sigbuf) != 0) {
ret = SSH_ERR_UNEXPECTED_TRAILING_DATA;
goto out;
@@ -180,6 +191,8 @@ ssh_ecdsa_verify(const struct sshkey *key,
sshbuf_free(sigbuf);
sshbuf_free(b);
ECDSA_SIG_free(sig);
+ BN_clear_free(sig_r);
+ BN_clear_free(sig_s);
free(ktype);
return ret;
}
diff --git a/ssh-keygen.c b/ssh-keygen.c
index 748ce37d..a70fd1f8 100644
--- a/ssh-keygen.c
+++ b/ssh-keygen.c
@@ -450,7 +450,10 @@ do_convert_private_ssh2_from_blob(u_char *blob, u_int blen)
u_int magic, i1, i2, i3, i4;
size_t slen;
u_long e;
-
+ BIGNUM *dsa_p = NULL, *dsa_q = NULL, *dsa_g = NULL;
+ BIGNUM *dsa_pub_key = NULL, *dsa_priv_key = NULL;
+ BIGNUM *rsa_n = NULL, *rsa_e = NULL, *rsa_d = NULL;
+ BIGNUM *rsa_p = NULL, *rsa_q = NULL, *rsa_iqmp = NULL;
if ((b = sshbuf_from(blob, blen)) == NULL)
fatal("%s: sshbuf_from failed", __func__);
if ((r = sshbuf_get_u32(b, &magic)) != 0)
@@ -494,11 +497,23 @@ do_convert_private_ssh2_from_blob(u_char *blob, u_int blen)
switch (key->type) {
case KEY_DSA:
- buffer_get_bignum_bits(b, key->dsa->p);
- buffer_get_bignum_bits(b, key->dsa->g);
- buffer_get_bignum_bits(b, key->dsa->q);
- buffer_get_bignum_bits(b, key->dsa->pub_key);
- buffer_get_bignum_bits(b, key->dsa->priv_key);
+ if ((dsa_p = BN_new()) == NULL ||
+ (dsa_q = BN_new()) == NULL ||
+ (dsa_g = BN_new()) == NULL ||
+ (dsa_pub_key = BN_new()) == NULL ||
+ (dsa_priv_key = BN_new()) == NULL)
+ fatal("%s: BN_new", __func__);
+ buffer_get_bignum_bits(b, dsa_p);
+ buffer_get_bignum_bits(b, dsa_g);
+ buffer_get_bignum_bits(b, dsa_q);
+ buffer_get_bignum_bits(b, dsa_pub_key);
+ buffer_get_bignum_bits(b, dsa_priv_key);
+ if (!DSA_set0_pqg(key->dsa, dsa_p, dsa_q, dsa_g))
+ fatal("%s: DSA_set0_pqg failed", __func__);
+ dsa_p = dsa_q = dsa_g = NULL; /* transferred */
+ if (!DSA_set0_key(key->dsa, dsa_pub_key, dsa_priv_key))
+ fatal("%s: DSA_set0_key failed", __func__);
+ dsa_pub_key = dsa_priv_key = NULL; /* transferred */
break;
case KEY_RSA:
if ((r = sshbuf_get_u8(b, &e1)) != 0 ||
@@ -515,18 +530,34 @@ do_convert_private_ssh2_from_blob(u_char *blob, u_int blen)
e += e3;
debug("e %lx", e);
}
- if (!BN_set_word(key->rsa->e, e)) {
+ if ((rsa_e = BN_new()) == NULL)
+ fatal("%s: BN_new", __func__);
+ if (!BN_set_word(rsa_e, e)) {
+ BN_clear_free(rsa_e);
sshbuf_free(b);
sshkey_free(key);
return NULL;
}
- buffer_get_bignum_bits(b, key->rsa->d);
- buffer_get_bignum_bits(b, key->rsa->n);
- buffer_get_bignum_bits(b, key->rsa->iqmp);
- buffer_get_bignum_bits(b, key->rsa->q);
- buffer_get_bignum_bits(b, key->rsa->p);
- if ((r = ssh_rsa_generate_additional_parameters(key)) != 0)
+ if ((rsa_n = BN_new()) == NULL ||
+ (rsa_d = BN_new()) == NULL ||
+ (rsa_p = BN_new()) == NULL ||
+ (rsa_q = BN_new()) == NULL ||
+ (rsa_iqmp = BN_new()) == NULL)
+ fatal("%s: BN_new", __func__);
+ buffer_get_bignum_bits(b, rsa_d);
+ buffer_get_bignum_bits(b, rsa_n);
+ buffer_get_bignum_bits(b, rsa_iqmp);
+ buffer_get_bignum_bits(b, rsa_q);
+ buffer_get_bignum_bits(b, rsa_p);
+ if (!RSA_set0_key(key->rsa, rsa_n, rsa_e, rsa_d))
+ fatal("%s: RSA_set0_key failed", __func__);
+ rsa_n = rsa_e = rsa_d = NULL; /* transferred */
+ if (!RSA_set0_factors(key->rsa, rsa_p, rsa_q))
+ fatal("%s: RSA_set0_factors failed", __func__);
+ rsa_p = rsa_q = NULL; /* transferred */
+ if ((r = ssh_rsa_complete_crt_parameters(key, rsa_iqmp)) != 0)
fatal("generate RSA parameters failed: %s", ssh_err(r));
+ BN_clear_free(rsa_iqmp);
break;
}
rlen = sshbuf_len(b);
@@ -634,7 +665,7 @@ do_convert_from_pkcs8(struct sshkey **k, int *private)
identity_file);
}
fclose(fp);
- switch (EVP_PKEY_type(pubkey->type)) {
+ switch (EVP_PKEY_base_id(pubkey)) {
case EVP_PKEY_RSA:
if ((*k = sshkey_new(KEY_UNSPEC)) == NULL)
fatal("sshkey_new failed");
@@ -658,7 +689,7 @@ do_convert_from_pkcs8(struct sshkey **k, int *private)
#endif
default:
fatal("%s: unsupported pubkey type %d", __func__,
- EVP_PKEY_type(pubkey->type));
+ EVP_PKEY_base_id(pubkey));
}
EVP_PKEY_free(pubkey);
return;
diff --git a/ssh-pkcs11-client.c b/ssh-pkcs11-client.c
index 028b272c..bcc18c6b 100644
--- a/ssh-pkcs11-client.c
+++ b/ssh-pkcs11-client.c
@@ -156,12 +156,14 @@ pkcs11_rsa_private_encrypt(int flen, const u_char *from, u_char *to, RSA *rsa,
static int
wrap_key(RSA *rsa)
{
- static RSA_METHOD helper_rsa;
+ static RSA_METHOD *helper_rsa;
- memcpy(&helper_rsa, RSA_get_default_method(), sizeof(helper_rsa));
- helper_rsa.name = "ssh-pkcs11-helper";
- helper_rsa.rsa_priv_enc = pkcs11_rsa_private_encrypt;
- RSA_set_method(rsa, &helper_rsa);
+ if ((helper_rsa = RSA_meth_dup(RSA_get_default_method())) == NULL)
+ fatal("%s: RSA_meth_dup failed", __func__);
+ if (!RSA_meth_set1_name(helper_rsa, "ssh-pkcs11-helper") ||
+ !RSA_meth_set_priv_enc(helper_rsa, pkcs11_rsa_private_encrypt))
+ fatal("%s: failed to prepare method", __func__);
+ RSA_set_method(rsa, helper_rsa);
return (0);
}
diff --git a/ssh-pkcs11.c b/ssh-pkcs11.c
index 65a7b589..c35f9415 100644
--- a/ssh-pkcs11.c
+++ b/ssh-pkcs11.c
@@ -67,7 +67,7 @@ struct pkcs11_key {
struct pkcs11_provider *provider;
CK_ULONG slotidx;
int (*orig_finish)(RSA *rsa);
- RSA_METHOD rsa_method;
+ RSA_METHOD *rsa_method;
char *keyid;
int keyid_len;
};
@@ -182,6 +182,7 @@ pkcs11_rsa_finish(RSA *rsa)
rv = k11->orig_finish(rsa);
if (k11->provider)
pkcs11_provider_unref(k11->provider);
+ RSA_meth_free(k11->rsa_method);
free(k11->keyid);
free(k11);
}
@@ -326,13 +327,18 @@ pkcs11_rsa_wrap(struct pkcs11_provider *provider, CK_ULONG slotidx,
k11->keyid = xmalloc(k11->keyid_len);
memcpy(k11->keyid, keyid_attrib->pValue, k11->keyid_len);
}
- k11->orig_finish = def->finish;
- memcpy(&k11->rsa_method, def, sizeof(k11->rsa_method));
- k11->rsa_method.name = "pkcs11";
- k11->rsa_method.rsa_priv_enc = pkcs11_rsa_private_encrypt;
- k11->rsa_method.rsa_priv_dec = pkcs11_rsa_private_decrypt;
- k11->rsa_method.finish = pkcs11_rsa_finish;
- RSA_set_method(rsa, &k11->rsa_method);
+ k11->rsa_method = RSA_meth_dup(def);
+ if (k11->rsa_method == NULL)
+ fatal("%s: RSA_meth_dup failed", __func__);
+ k11->orig_finish = RSA_meth_get_finish(def);
+ if (!RSA_meth_set1_name(k11->rsa_method, "pkcs11") ||
+ !RSA_meth_set_priv_enc(k11->rsa_method,
+ pkcs11_rsa_private_encrypt) ||
+ !RSA_meth_set_priv_dec(k11->rsa_method,
+ pkcs11_rsa_private_decrypt) ||
+ !RSA_meth_set_finish(k11->rsa_method, pkcs11_rsa_finish))
+ fatal("%s: setup pkcs11 method failed", __func__);
+ RSA_set_method(rsa, k11->rsa_method);
RSA_set_app_data(rsa, k11);
return (0);
}
@@ -445,6 +451,15 @@ pkcs11_key_included(struct sshkey ***keysp, int *nkeys, struct sshkey *key)
}
static int
+have_rsa_key(const RSA *rsa)
+{
+ const BIGNUM *rsa_n, *rsa_e;
+
+ RSA_get0_key(rsa, &rsa_n, &rsa_e, NULL);
+ return rsa_n != NULL && rsa_e != NULL;
+}
+
+static int
pkcs11_fetch_keys_filter(struct pkcs11_provider *p, CK_ULONG slotidx,
CK_ATTRIBUTE filter[], CK_ATTRIBUTE attribs[3],
struct sshkey ***keysp, int *nkeys)
@@ -512,10 +527,20 @@ pkcs11_fetch_keys_filter(struct pkcs11_provider *p, CK_ULONG slotidx,
if ((rsa = RSA_new()) == NULL) {
error("RSA_new failed");
} else {
- rsa->n = BN_bin2bn(attribs[1].pValue,
+ BIGNUM *rsa_n, *rsa_e;
+
+ rsa_n = BN_bin2bn(attribs[1].pValue,
attribs[1].ulValueLen, NULL);
- rsa->e = BN_bin2bn(attribs[2].pValue,
+ rsa_e = BN_bin2bn(attribs[2].pValue,
attribs[2].ulValueLen, NULL);
+ if (rsa_n != NULL && rsa_e != NULL) {
+ if (!RSA_set0_key(rsa,
+ rsa_n, rsa_e, NULL))
+ fatal("%s: set key", __func__);
+ rsa_n = rsa_e = NULL; /* transferred */
+ }
+ BN_free(rsa_n);
+ BN_free(rsa_e);
}
} else {
cp = attribs[2].pValue;
@@ -525,16 +550,16 @@ pkcs11_fetch_keys_filter(struct pkcs11_provider *p, CK_ULONG slotidx,
== NULL) {
error("d2i_X509 failed");
} else if ((evp = X509_get_pubkey(x509)) == NULL ||
- evp->type != EVP_PKEY_RSA ||
- evp->pkey.rsa == NULL) {
+ EVP_PKEY_base_id(evp) != EVP_PKEY_RSA ||
+ EVP_PKEY_get0_RSA(evp) == NULL) {
debug("X509_get_pubkey failed or no rsa");
- } else if ((rsa = RSAPublicKey_dup(evp->pkey.rsa))
- == NULL) {
+ } else if ((rsa = RSAPublicKey_dup(
+ EVP_PKEY_get0_RSA(evp))) == NULL) {
error("RSAPublicKey_dup");
}
X509_free(x509);
}
- if (rsa && rsa->n && rsa->e &&
+ if (rsa && have_rsa_key(rsa) &&
pkcs11_rsa_wrap(p, slotidx, &attribs[0], rsa) == 0) {
if ((key = sshkey_new(KEY_UNSPEC)) == NULL)
fatal("sshkey_new failed");
diff --git a/ssh-rsa.c b/ssh-rsa.c
index 1756315b..2788f334 100644
--- a/ssh-rsa.c
+++ b/ssh-rsa.c
@@ -104,38 +104,55 @@ rsa_hash_alg_nid(int type)
}
int
-ssh_rsa_generate_additional_parameters(struct sshkey *key)
+ssh_rsa_complete_crt_parameters(struct sshkey *key, const BIGNUM *iqmp)
{
- BIGNUM *aux = NULL;
+ const BIGNUM *rsa_p, *rsa_q, *rsa_d;
+ BIGNUM *aux = NULL, *d_consttime = NULL;
+ BIGNUM *rsa_dmq1 = NULL, *rsa_dmp1 = NULL, *rsa_iqmp = NULL;
BN_CTX *ctx = NULL;
- BIGNUM d;
int r;
if (key == NULL || key->rsa == NULL ||
sshkey_type_plain(key->type) != KEY_RSA)
return SSH_ERR_INVALID_ARGUMENT;
+ RSA_get0_key(key->rsa, NULL, NULL, &rsa_d);
+ RSA_get0_factors(key->rsa, &rsa_p, &rsa_q);
+
if ((ctx = BN_CTX_new()) == NULL)
return SSH_ERR_ALLOC_FAIL;
- if ((aux = BN_new()) == NULL) {
+ if ((aux = BN_new()) == NULL ||
+ (rsa_dmq1 = BN_new()) == NULL ||
+ (rsa_dmp1 = BN_new()) == NULL)
+ return SSH_ERR_ALLOC_FAIL;
+ if ((d_consttime = BN_dup(rsa_d)) == NULL ||
+ (rsa_iqmp = BN_dup(iqmp)) == NULL) {
r = SSH_ERR_ALLOC_FAIL;
goto out;
}
BN_set_flags(aux, BN_FLG_CONSTTIME);
+ BN_set_flags(d_consttime, BN_FLG_CONSTTIME);
- BN_init(&d);
- BN_with_flags(&d, key->rsa->d, BN_FLG_CONSTTIME);
-
- if ((BN_sub(aux, key->rsa->q, BN_value_one()) == 0) ||
- (BN_mod(key->rsa->dmq1, &d, aux, ctx) == 0) ||
- (BN_sub(aux, key->rsa->p, BN_value_one()) == 0) ||
- (BN_mod(key->rsa->dmp1, &d, aux, ctx) == 0)) {
+ if ((BN_sub(aux, rsa_q, BN_value_one()) == 0) ||
+ (BN_mod(rsa_dmq1, d_consttime, aux, ctx) == 0) ||
+ (BN_sub(aux, rsa_p, BN_value_one()) == 0) ||
+ (BN_mod(rsa_dmp1, d_consttime, aux, ctx) == 0)) {
+ r = SSH_ERR_LIBCRYPTO_ERROR;
+ goto out;
+ }
+ if (!RSA_set0_crt_params(key->rsa, rsa_dmp1, rsa_dmq1, rsa_iqmp)) {
r = SSH_ERR_LIBCRYPTO_ERROR;
goto out;
}
+ rsa_dmp1 = rsa_dmq1 = rsa_iqmp = NULL; /* transferred */
+ /* success */
r = 0;
out:
BN_clear_free(aux);
+ BN_clear_free(d_consttime);
+ BN_clear_free(rsa_dmp1);
+ BN_clear_free(rsa_dmq1);
+ BN_clear_free(rsa_iqmp);
BN_CTX_free(ctx);
return r;
}
@@ -145,6 +162,7 @@ int
ssh_rsa_sign(const struct sshkey *key, u_char **sigp, size_t *lenp,
const u_char *data, size_t datalen, const char *alg_ident)
{
+ const BIGNUM *rsa_n;
u_char digest[SSH_DIGEST_MAX_LENGTH], *sig = NULL;
size_t slen = 0;
u_int dlen, len;
@@ -163,7 +181,8 @@ ssh_rsa_sign(const struct sshkey *key, u_char **sigp, size_t *lenp,
if (key == NULL || key->rsa == NULL || hash_alg == -1 ||
sshkey_type_plain(key->type) != KEY_RSA)
return SSH_ERR_INVALID_ARGUMENT;
- if (BN_num_bits(key->rsa->n) < SSH_RSA_MINIMUM_MODULUS_SIZE)
+ RSA_get0_key(key->rsa, &rsa_n, NULL, NULL);
+ if (BN_num_bits(rsa_n) < SSH_RSA_MINIMUM_MODULUS_SIZE)
return SSH_ERR_KEY_LENGTH;
slen = RSA_size(key->rsa);
if (slen <= 0 || slen > SSHBUF_MAX_BIGNUM)
@@ -225,6 +244,7 @@ ssh_rsa_verify(const struct sshkey *key,
const u_char *sig, size_t siglen, const u_char *data, size_t datalen,
const char *alg)
{
+ const BIGNUM *rsa_n;
char *sigtype = NULL;
int hash_alg, want_alg, ret = SSH_ERR_INTERNAL_ERROR;
size_t len = 0, diff, modlen, dlen;
@@ -235,7 +255,8 @@ ssh_rsa_verify(const struct sshkey *key,
sshkey_type_plain(key->type) != KEY_RSA ||
sig == NULL || siglen == 0)
return SSH_ERR_INVALID_ARGUMENT;
- if (BN_num_bits(key->rsa->n) < SSH_RSA_MINIMUM_MODULUS_SIZE)
+ RSA_get0_key(key->rsa, &rsa_n, NULL, NULL);
+ if (BN_num_bits(rsa_n) < SSH_RSA_MINIMUM_MODULUS_SIZE)
return SSH_ERR_KEY_LENGTH;
if ((b = sshbuf_from(sig, siglen)) == NULL)
diff --git a/sshd.c b/sshd.c
index a738c3ab..98beb1ed 100644
--- a/sshd.c
+++ b/sshd.c
@@ -493,8 +493,8 @@ demote_sensitive_data(void)
for (i = 0; i < options.num_host_key_files; i++) {
if (sensitive_data.host_keys[i]) {
- if ((r = sshkey_demote(sensitive_data.host_keys[i],
- &tmp)) != 0)
+ if ((r = sshkey_from_private(
+ sensitive_data.host_keys[i], &tmp)) != 0)
fatal("could not demote host %s key: %s",
sshkey_type(sensitive_data.host_keys[i]),
ssh_err(r));
@@ -1772,7 +1772,7 @@ main(int ac, char **av)
error("Error loading host key \"%s\": %s",
options.host_key_files[i], ssh_err(r));
if (pubkey == NULL && key != NULL)
- if ((r = sshkey_demote(key, &pubkey)) != 0)
+ if ((r = sshkey_from_private(key, &pubkey)) != 0)
fatal("Could not demote key: \"%s\": %s",
options.host_key_files[i], ssh_err(r));
sensitive_data.host_keys[i] = key;
diff --git a/sshkey.c b/sshkey.c
index 50ebdc25..085f1707 100644
--- a/sshkey.c
+++ b/sshkey.c
@@ -289,14 +289,24 @@ sshkey_names_valid2(const char *names, int allow_wildcard)
u_int
sshkey_size(const struct sshkey *k)
{
+#ifdef WITH_OPENSSL
+ const BIGNUM *rsa_n, *dsa_p;
+#endif /* WITH_OPENSSL */
+
switch (k->type) {
#ifdef WITH_OPENSSL
case KEY_RSA:
case KEY_RSA_CERT:
- return BN_num_bits(k->rsa->n);
+ if (k->rsa == NULL)
+ return 0;
+ RSA_get0_key(k->rsa, &rsa_n, NULL, NULL);
+ return BN_num_bits(rsa_n);
case KEY_DSA:
case KEY_DSA_CERT:
- return BN_num_bits(k->dsa->p);
+ if (k->dsa == NULL)
+ return 0;
+ DSA_get0_pqg(k->dsa, &dsa_p, NULL, NULL);
+ return BN_num_bits(dsa_p);
case KEY_ECDSA:
case KEY_ECDSA_CERT:
return sshkey_curve_nid_to_bits(k->ecdsa_nid);
@@ -503,10 +513,7 @@ sshkey_new(int type)
#ifdef WITH_OPENSSL
case KEY_RSA:
case KEY_RSA_CERT:
- if ((rsa = RSA_new()) == NULL ||
- (rsa->n = BN_new()) == NULL ||
- (rsa->e = BN_new()) == NULL) {
- RSA_free(rsa);
+ if ((rsa = RSA_new()) == NULL) {
free(k);
return NULL;
}
@@ -514,12 +521,7 @@ sshkey_new(int type)
break;
case KEY_DSA:
case KEY_DSA_CERT:
- if ((dsa = DSA_new()) == NULL ||
- (dsa->p = BN_new()) == NULL ||
- (dsa->q = BN_new()) == NULL ||
- (dsa->g = BN_new()) == NULL ||
- (dsa->pub_key = BN_new()) == NULL) {
- DSA_free(dsa);
+ if ((dsa = DSA_new()) == NULL) {
free(k);
return NULL;
}
@@ -553,47 +555,7 @@ sshkey_new(int type)
return k;
}
-int
-sshkey_add_private(struct sshkey *k)
-{
- switch (k->type) {
-#ifdef WITH_OPENSSL
- case KEY_RSA:
- case KEY_RSA_CERT:
-#define bn_maybe_alloc_failed(p) (p == NULL && (p = BN_new()) == NULL)
- if (bn_maybe_alloc_failed(k->rsa->d) ||
- bn_maybe_alloc_failed(k->rsa->iqmp) ||
- bn_maybe_alloc_failed(k->rsa->q) ||
- bn_maybe_alloc_failed(k->rsa->p) ||
- bn_maybe_alloc_failed(k->rsa->dmq1) ||
- bn_maybe_alloc_failed(k->rsa->dmp1))
- return SSH_ERR_ALLOC_FAIL;
- break;
- case KEY_DSA:
- case KEY_DSA_CERT:
- if (bn_maybe_alloc_failed(k->dsa->priv_key))
- return SSH_ERR_ALLOC_FAIL;
- break;
-#undef bn_maybe_alloc_failed
- case KEY_ECDSA:
- case KEY_ECDSA_CERT:
- /* Cannot do anything until we know the group */
- break;
-#endif /* WITH_OPENSSL */
- case KEY_ED25519:
- case KEY_ED25519_CERT:
- case KEY_XMSS:
- case KEY_XMSS_CERT:
- /* no need to prealloc */
- break;
- case KEY_UNSPEC:
- break;
- default:
- return SSH_ERR_INVALID_ARGUMENT;
- }
- return 0;
-}
-
+/* XXX garbage-collect this API */
struct sshkey *
sshkey_new_private(int type)
{
@@ -601,10 +563,6 @@ sshkey_new_private(int type)
if (k == NULL)
return NULL;
- if (sshkey_add_private(k) != 0) {
- sshkey_free(k);
- return NULL;
- }
return k;
}
@@ -686,9 +644,15 @@ cert_compare(struct sshkey_cert *a, struct sshkey_cert *b)
int
sshkey_equal_public(const struct sshkey *a, const struct sshkey *b)
{
-#if defined(WITH_OPENSSL) && defined(OPENSSL_HAS_ECC)
+#if defined(WITH_OPENSSL)
+ const BIGNUM *rsa_e_a, *rsa_n_a;
+ const BIGNUM *rsa_e_b, *rsa_n_b;
+ const BIGNUM *dsa_p_a, *dsa_q_a, *dsa_g_a, *dsa_pub_key_a;
+ const BIGNUM *dsa_p_b, *dsa_q_b, *dsa_g_b, *dsa_pub_key_b;
+# if defined(OPENSSL_HAS_ECC)
BN_CTX *bnctx;
-#endif /* WITH_OPENSSL && OPENSSL_HAS_ECC */
+# endif /* OPENSSL_HAS_ECC */
+#endif /* WITH_OPENSSL */
if (a == NULL || b == NULL ||
sshkey_type_plain(a->type) != sshkey_type_plain(b->type))
@@ -698,16 +662,24 @@ sshkey_equal_public(const struct sshkey *a, const struct sshkey *b)
#ifdef WITH_OPENSSL
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;
+ if (a->rsa == NULL || b->rsa == NULL)
+ return 0;
+ RSA_get0_key(a->rsa, &rsa_n_a, &rsa_e_a, NULL);
+ RSA_get0_key(b->rsa, &rsa_n_b, &rsa_e_b, NULL);
+ return BN_cmp(rsa_e_a, rsa_e_b) == 0 &&
+ BN_cmp(rsa_n_a, rsa_n_b) == 0;
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;
+ if (a->dsa == NULL || b->dsa == NULL)
+ return 0;
+ DSA_get0_pqg(a->dsa, &dsa_p_a, &dsa_q_a, &dsa_g_a);
+ DSA_get0_pqg(b->dsa, &dsa_p_b, &dsa_q_b, &dsa_g_b);
+ DSA_get0_key(a->dsa, &dsa_pub_key_a, NULL);
+ DSA_get0_key(b->dsa, &dsa_pub_key_b, NULL);
+ return BN_cmp(dsa_p_a, dsa_p_b) == 0 &&
+ BN_cmp(dsa_q_a, dsa_q_b) == 0 &&
+ BN_cmp(dsa_g_a, dsa_g_b) == 0 &&
+ BN_cmp(dsa_pub_key_a, dsa_pub_key_b) == 0;
# ifdef OPENSSL_HAS_ECC
case KEY_ECDSA_CERT:
case KEY_ECDSA:
@@ -764,6 +736,9 @@ to_blob_buf(const struct sshkey *key, struct sshbuf *b, int force_plain,
{
int type, ret = SSH_ERR_INTERNAL_ERROR;
const char *typename;
+#ifdef WITH_OPENSSL
+ const BIGNUM *rsa_n, *rsa_e, *dsa_p, *dsa_q, *dsa_g, *dsa_pub_key;
+#endif /* WITH_OPENSSL */
if (key == NULL)
return SSH_ERR_INVALID_ARGUMENT;
@@ -796,11 +771,13 @@ to_blob_buf(const struct sshkey *key, struct sshbuf *b, int force_plain,
case KEY_DSA:
if (key->dsa == NULL)
return SSH_ERR_INVALID_ARGUMENT;
+ DSA_get0_pqg(key->dsa, &dsa_p, &dsa_q, &dsa_g);
+ DSA_get0_key(key->dsa, &dsa_pub_key, NULL);
if ((ret = sshbuf_put_cstring(b, typename)) != 0 ||
- (ret = sshbuf_put_bignum2(b, key->dsa->p)) != 0 ||
- (ret = sshbuf_put_bignum2(b, key->dsa->q)) != 0 ||
- (ret = sshbuf_put_bignum2(b, key->dsa->g)) != 0 ||
- (ret = sshbuf_put_bignum2(b, key->dsa->pub_key)) != 0)
+ (ret = sshbuf_put_bignum2(b, dsa_p)) != 0 ||
+ (ret = sshbuf_put_bignum2(b, dsa_q)) != 0 ||
+ (ret = sshbuf_put_bignum2(b, dsa_g)) != 0 ||
+ (ret = sshbuf_put_bignum2(b, dsa_pub_key)) != 0)
return ret;
break;
# ifdef OPENSSL_HAS_ECC
@@ -817,9 +794,10 @@ to_blob_buf(const struct sshkey *key, struct sshbuf *b, int force_plain,
case KEY_RSA:
if (key->rsa == NULL)
return SSH_ERR_INVALID_ARGUMENT;
+ RSA_get0_key(key->rsa, &rsa_n, &rsa_e, NULL);
if ((ret = sshbuf_put_cstring(b, typename)) != 0 ||
- (ret = sshbuf_put_bignum2(b, key->rsa->e)) != 0 ||
- (ret = sshbuf_put_bignum2(b, key->rsa->n)) != 0)
+ (ret = sshbuf_put_bignum2(b, rsa_e)) != 0 ||
+ (ret = sshbuf_put_bignum2(b, rsa_n)) != 0)
return ret;
break;
#endif /* WITH_OPENSSL */
@@ -1767,59 +1745,95 @@ sshkey_from_private(const struct sshkey *k, struct sshkey **pkp)
{
struct sshkey *n = NULL;
int ret = SSH_ERR_INTERNAL_ERROR;
+ int r = SSH_ERR_INTERNAL_ERROR;
+#ifdef WITH_OPENSSL
+ const BIGNUM *rsa_n, *rsa_e;
+ BIGNUM *rsa_n_dup = NULL, *rsa_e_dup = NULL;
+ const BIGNUM *dsa_p, *dsa_q, *dsa_g, *dsa_pub_key;
+ BIGNUM *dsa_p_dup = NULL, *dsa_q_dup = NULL, *dsa_g_dup = NULL;
+ BIGNUM *dsa_pub_key_dup = NULL;
+#endif /* WITH_OPENSSL */
*pkp = NULL;
switch (k->type) {
#ifdef WITH_OPENSSL
case KEY_DSA:
case KEY_DSA_CERT:
- if ((n = sshkey_new(k->type)) == NULL)
- return SSH_ERR_ALLOC_FAIL;
- 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)) {
- sshkey_free(n);
- return SSH_ERR_ALLOC_FAIL;
+ if ((n = sshkey_new(k->type)) == NULL) {
+ r = SSH_ERR_ALLOC_FAIL;
+ goto out;
+ }
+
+ DSA_get0_pqg(k->dsa, &dsa_p, &dsa_q, &dsa_g);
+ DSA_get0_key(k->dsa, &dsa_pub_key, NULL);
+ if ((dsa_p_dup = BN_dup(dsa_p)) == NULL ||
+ (dsa_q_dup = BN_dup(dsa_q)) == NULL ||
+ (dsa_g_dup = BN_dup(dsa_g)) == NULL ||
+ (dsa_pub_key_dup = BN_dup(dsa_pub_key)) == NULL) {
+ r = SSH_ERR_ALLOC_FAIL;
+ goto out;
}
+ if (!DSA_set0_pqg(n->dsa, dsa_p_dup, dsa_q_dup, dsa_g_dup)) {
+ r = SSH_ERR_LIBCRYPTO_ERROR;
+ goto out;
+ }
+ dsa_p_dup = dsa_q_dup = dsa_g_dup = NULL; /* transferred */
+ if (!DSA_set0_key(n->dsa, dsa_pub_key_dup, NULL)) {
+ r = SSH_ERR_LIBCRYPTO_ERROR;
+ goto out;
+ }
+ dsa_pub_key_dup = NULL; /* transferred */
+
break;
# ifdef OPENSSL_HAS_ECC
case KEY_ECDSA:
case KEY_ECDSA_CERT:
- if ((n = sshkey_new(k->type)) == NULL)
- return SSH_ERR_ALLOC_FAIL;
+ if ((n = sshkey_new(k->type)) == NULL) {
+ r = SSH_ERR_ALLOC_FAIL;
+ goto out;
+ }
n->ecdsa_nid = k->ecdsa_nid;
n->ecdsa = EC_KEY_new_by_curve_name(k->ecdsa_nid);
if (n->ecdsa == NULL) {
- sshkey_free(n);
- return SSH_ERR_ALLOC_FAIL;
+ r = SSH_ERR_ALLOC_FAIL;
+ goto out;
}
if (EC_KEY_set_public_key(n->ecdsa,
EC_KEY_get0_public_key(k->ecdsa)) != 1) {
- sshkey_free(n);
- return SSH_ERR_LIBCRYPTO_ERROR;
+ r = SSH_ERR_LIBCRYPTO_ERROR;
+ goto out;
}
break;
# endif /* OPENSSL_HAS_ECC */
case KEY_RSA:
case KEY_RSA_CERT:
- if ((n = sshkey_new(k->type)) == NULL)
- return SSH_ERR_ALLOC_FAIL;
- if ((BN_copy(n->rsa->n, k->rsa->n) == NULL) ||
- (BN_copy(n->rsa->e, k->rsa->e) == NULL)) {
- sshkey_free(n);
- return SSH_ERR_ALLOC_FAIL;
+ if ((n = sshkey_new(k->type)) == NULL) {
+ r = SSH_ERR_ALLOC_FAIL;
+ goto out;
}
+ RSA_get0_key(k->rsa, &rsa_n, &rsa_e, NULL);
+ if ((rsa_n_dup = BN_dup(rsa_n)) == NULL ||
+ (rsa_e_dup = BN_dup(rsa_e)) == NULL) {
+ r = SSH_ERR_ALLOC_FAIL;
+ goto out;
+ }
+ if (!RSA_set0_key(n->rsa, rsa_n_dup, rsa_e_dup, NULL)) {
+ r = SSH_ERR_LIBCRYPTO_ERROR;
+ goto out;
+ }
+ rsa_n_dup = rsa_e_dup = NULL; /* transferred */
break;
#endif /* WITH_OPENSSL */
case KEY_ED25519:
case KEY_ED25519_CERT:
- if ((n = sshkey_new(k->type)) == NULL)
- return SSH_ERR_ALLOC_FAIL;
+ if ((n = sshkey_new(k->type)) == NULL) {
+ r = SSH_ERR_ALLOC_FAIL;
+ goto out;
+ }
if (k->ed25519_pk != NULL) {
if ((n->ed25519_pk = malloc(ED25519_PK_SZ)) == NULL) {
- sshkey_free(n);
- return SSH_ERR_ALLOC_FAIL;
+ r = SSH_ERR_ALLOC_FAIL;
+ goto out;
}
memcpy(n->ed25519_pk, k->ed25519_pk, ED25519_PK_SZ);
}
@@ -1827,37 +1841,46 @@ sshkey_from_private(const struct sshkey *k, struct sshkey **pkp)
#ifdef WITH_XMSS
case KEY_XMSS:
case KEY_XMSS_CERT:
- if ((n = sshkey_new(k->type)) == NULL)
- return SSH_ERR_ALLOC_FAIL;
- if ((ret = sshkey_xmss_init(n, k->xmss_name)) != 0) {
- sshkey_free(n);
- return ret;
+ if ((n = sshkey_new(k->type)) == NULL) {
+ r = SSH_ERR_ALLOC_FAIL;
+ goto out;
}
+ if ((r = sshkey_xmss_init(n, k->xmss_name)) != 0)
+ goto out;
if (k->xmss_pk != NULL) {
size_t pklen = sshkey_xmss_pklen(k);
if (pklen == 0 || sshkey_xmss_pklen(n) != pklen) {
- sshkey_free(n);
- return SSH_ERR_INTERNAL_ERROR;
+ r = SSH_ERR_INTERNAL_ERROR;
+ goto out;
}
if ((n->xmss_pk = malloc(pklen)) == NULL) {
- sshkey_free(n);
- return SSH_ERR_ALLOC_FAIL;
+ r = SSH_ERR_ALLOC_FAIL;
+ goto out;
}
memcpy(n->xmss_pk, k->xmss_pk, pklen);
}
break;
#endif /* WITH_XMSS */
default:
- return SSH_ERR_KEY_TYPE_UNKNOWN;
- }
- if (sshkey_is_cert(k)) {
- if ((ret = sshkey_cert_copy(k, n)) != 0) {
- sshkey_free(n);
- return ret;
- }
+ r = SSH_ERR_KEY_TYPE_UNKNOWN;
+ goto out;
}
+ if (sshkey_is_cert(k) && (r = sshkey_cert_copy(k, n)) != 0)
+ goto out;
+ /* success */
*pkp = n;
- return 0;
+ n = NULL;
+ r = 0;
+ out:
+ sshkey_free(n);
+ BN_clear_free(rsa_n_dup);
+ BN_clear_free(rsa_e_dup);
+ BN_clear_free(dsa_p_dup);
+ BN_clear_free(dsa_q_dup);
+ BN_clear_free(dsa_g_dup);
+ BN_clear_free(dsa_pub_key_dup);
+
+ return r;
}
static int
@@ -1986,6 +2009,17 @@ cert_parse(struct sshbuf *b, struct sshkey *key, struct sshbuf *certbuf)
}
static int
+check_rsa_length(const RSA *rsa)
+{
+ const BIGNUM *rsa_n;
+
+ RSA_get0_key(rsa, &rsa_n, NULL, NULL);
+ if (BN_num_bits(rsa_n) < SSH_RSA_MINIMUM_MODULUS_SIZE)
+ return SSH_ERR_KEY_LENGTH;
+ return 0;
+}
+
+static int
sshkey_from_blob_internal(struct sshbuf *b, struct sshkey **keyp,
int allow_cert)
{
@@ -1995,9 +2029,13 @@ sshkey_from_blob_internal(struct sshbuf *b, struct sshkey **keyp,
size_t len;
u_char *pk = NULL;
struct sshbuf *copy;
-#if defined(WITH_OPENSSL) && defined(OPENSSL_HAS_ECC)
+#if defined(WITH_OPENSSL)
+ BIGNUM *rsa_n = NULL, *rsa_e = NULL;
+ BIGNUM *dsa_p = NULL, *dsa_q = NULL, *dsa_g = NULL, *dsa_pub_key = NULL;
+# if defined(OPENSSL_HAS_ECC)
EC_POINT *q = NULL;
-#endif /* WITH_OPENSSL && OPENSSL_HAS_ECC */
+# endif /* OPENSSL_HAS_ECC */
+#endif /* WITH_OPENSSL */
#ifdef DEBUG_PK /* XXX */
sshbuf_dump(b, stderr);
@@ -2032,15 +2070,23 @@ sshkey_from_blob_internal(struct sshbuf *b, struct sshkey **keyp,
ret = SSH_ERR_ALLOC_FAIL;
goto out;
}
- if (sshbuf_get_bignum2(b, key->rsa->e) != 0 ||
- sshbuf_get_bignum2(b, key->rsa->n) != 0) {
+ if ((rsa_e = BN_new()) == NULL ||
+ (rsa_n = BN_new()) == NULL) {
+ ret = SSH_ERR_ALLOC_FAIL;
+ goto out;
+ }
+ if (sshbuf_get_bignum2(b, rsa_e) != 0 ||
+ sshbuf_get_bignum2(b, rsa_n) != 0) {
ret = SSH_ERR_INVALID_FORMAT;
goto out;
}
- if (BN_num_bits(key->rsa->n) < SSH_RSA_MINIMUM_MODULUS_SIZE) {
- ret = SSH_ERR_KEY_LENGTH;
+ if (!RSA_set0_key(key->rsa, rsa_n, rsa_e, NULL)) {
+ ret = SSH_ERR_LIBCRYPTO_ERROR;
goto out;
}
+ rsa_n = rsa_e = NULL; /* transferred */
+ if ((ret = check_rsa_length(key->rsa)) != 0)
+ goto out;
#ifdef DEBUG_PK
RSA_print_fp(stderr, key->rsa, 8);
#endif
@@ -2057,13 +2103,30 @@ sshkey_from_blob_internal(struct sshbuf *b, struct sshkey **keyp,
ret = SSH_ERR_ALLOC_FAIL;
goto out;
}
- if (sshbuf_get_bignum2(b, key->dsa->p) != 0 ||
- sshbuf_get_bignum2(b, key->dsa->q) != 0 ||
- sshbuf_get_bignum2(b, key->dsa->g) != 0 ||
- sshbuf_get_bignum2(b, key->dsa->pub_key) != 0) {
+ if ((dsa_p = BN_new()) == NULL ||
+ (dsa_q = BN_new()) == NULL ||
+ (dsa_g = BN_new()) == NULL ||
+ (dsa_pub_key = BN_new()) == NULL) {
+ ret = SSH_ERR_ALLOC_FAIL;
+ goto out;
+ }
+ if (sshbuf_get_bignum2(b, dsa_p) != 0 ||
+ sshbuf_get_bignum2(b, dsa_q) != 0 ||
+ sshbuf_get_bignum2(b, dsa_g) != 0 ||
+ sshbuf_get_bignum2(b, dsa_pub_key) != 0) {
ret = SSH_ERR_INVALID_FORMAT;
goto out;
}
+ if (!DSA_set0_pqg(key->dsa, dsa_p, dsa_q, dsa_g)) {
+ ret = SSH_ERR_LIBCRYPTO_ERROR;
+ goto out;
+ }
+ dsa_p = dsa_q = dsa_g = NULL; /* transferred */
+ if (!DSA_set0_key(key->dsa, dsa_pub_key, NULL)) {
+ ret = SSH_ERR_LIBCRYPTO_ERROR;
+ goto out;
+ }
+ dsa_pub_key = NULL; /* transferred */
#ifdef DEBUG_PK
DSA_print_fp(stderr, key->dsa, 8);
#endif
@@ -2197,9 +2260,17 @@ sshkey_from_blob_internal(struct sshbuf *b, struct sshkey **keyp,
free(ktype);
free(curve);
free(pk);
-#if defined(WITH_OPENSSL) && defined(OPENSSL_HAS_ECC)
+#if defined(WITH_OPENSSL)
+ BN_clear_free(rsa_n);
+ BN_clear_free(rsa_e);
+ BN_clear_free(dsa_p);
+ BN_clear_free(dsa_q);
+ BN_clear_free(dsa_g);
+ BN_clear_free(dsa_pub_key);
+# if defined(OPENSSL_HAS_ECC)
EC_POINT_free(q);
-#endif /* WITH_OPENSSL && OPENSSL_HAS_ECC */
+# endif /* OPENSSL_HAS_ECC */
+#endif /* WITH_OPENSSL */
return ret;
}
@@ -2401,120 +2472,6 @@ sshkey_verify(const struct sshkey *key,
}
}
-/* Converts a private to a public key */
-int
-sshkey_demote(const struct sshkey *k, struct sshkey **dkp)
-{
- struct sshkey *pk;
- int ret = SSH_ERR_INTERNAL_ERROR;
-
- *dkp = NULL;
- if ((pk = calloc(1, sizeof(*pk))) == NULL)
- return SSH_ERR_ALLOC_FAIL;
- 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;
- pk->xmss_pk = NULL;
- pk->xmss_sk = NULL;
-
- switch (k->type) {
-#ifdef WITH_OPENSSL
- case KEY_RSA_CERT:
- if ((ret = sshkey_cert_copy(k, pk)) != 0)
- goto fail;
- /* FALLTHROUGH */
- case KEY_RSA:
- if ((pk->rsa = RSA_new()) == NULL ||
- (pk->rsa->e = BN_dup(k->rsa->e)) == NULL ||
- (pk->rsa->n = BN_dup(k->rsa->n)) == NULL) {
- ret = SSH_ERR_ALLOC_FAIL;
- goto fail;
- }
- break;
- case KEY_DSA_CERT:
- if ((ret = sshkey_cert_copy(k, pk)) != 0)
- goto fail;
- /* FALLTHROUGH */
- case KEY_DSA:
- if ((pk->dsa = DSA_new()) == NULL ||
- (pk->dsa->p = BN_dup(k->dsa->p)) == NULL ||
- (pk->dsa->q = BN_dup(k->dsa->q)) == NULL ||
- (pk->dsa->g = BN_dup(k->dsa->g)) == NULL ||
- (pk->dsa->pub_key = BN_dup(k->dsa->pub_key)) == NULL) {
- ret = SSH_ERR_ALLOC_FAIL;
- goto fail;
- }
- break;
- case KEY_ECDSA_CERT:
- if ((ret = sshkey_cert_copy(k, pk)) != 0)
- goto fail;
- /* FALLTHROUGH */
-# ifdef OPENSSL_HAS_ECC
- case KEY_ECDSA:
- pk->ecdsa = EC_KEY_new_by_curve_name(pk->ecdsa_nid);
- if (pk->ecdsa == NULL) {
- ret = SSH_ERR_ALLOC_FAIL;
- goto fail;
- }
- if (EC_KEY_set_public_key(pk->ecdsa,
- EC_KEY_get0_public_key(k->ecdsa)) != 1) {
- ret = SSH_ERR_LIBCRYPTO_ERROR;
- goto fail;
- }
- break;
-# endif /* OPENSSL_HAS_ECC */
-#endif /* WITH_OPENSSL */
- case KEY_ED25519_CERT:
- if ((ret = sshkey_cert_copy(k, pk)) != 0)
- goto fail;
- /* FALLTHROUGH */
- case KEY_ED25519:
- if (k->ed25519_pk != NULL) {
- if ((pk->ed25519_pk = malloc(ED25519_PK_SZ)) == NULL) {
- ret = SSH_ERR_ALLOC_FAIL;
- goto fail;
- }
- memcpy(pk->ed25519_pk, k->ed25519_pk, ED25519_PK_SZ);
- }
- break;
-#ifdef WITH_XMSS
- case KEY_XMSS_CERT:
- if ((ret = sshkey_cert_copy(k, pk)) != 0)
- goto fail;
- /* FALLTHROUGH */
- case KEY_XMSS:
- if ((ret = sshkey_xmss_init(pk, k->xmss_name)) != 0)
- goto fail;
- if (k->xmss_pk != NULL) {
- size_t pklen = sshkey_xmss_pklen(k);
-
- if (pklen == 0 || sshkey_xmss_pklen(pk) != pklen) {
- ret = SSH_ERR_INTERNAL_ERROR;
- goto fail;
- }
- if ((pk->xmss_pk = malloc(pklen)) == NULL) {
- ret = SSH_ERR_ALLOC_FAIL;
- goto fail;
- }
- memcpy(pk->xmss_pk, k->xmss_pk, pklen);
- }
- break;
-#endif /* WITH_XMSS */
- default:
- ret = SSH_ERR_KEY_TYPE_UNKNOWN;
- fail:
- sshkey_free(pk);
- return ret;
- }
- *dkp = pk;
- return 0;
-}
-
/* Convert a plain key to their _CERT equivalent */
int
sshkey_to_certified(struct sshkey *k)
@@ -2573,6 +2530,9 @@ sshkey_certify_custom(struct sshkey *k, struct sshkey *ca, const char *alg,
int ret = SSH_ERR_INTERNAL_ERROR;
struct sshbuf *cert = NULL;
char *sigtype = NULL;
+#ifdef WITH_OPENSSL
+ const BIGNUM *rsa_n, *rsa_e, *dsa_p, *dsa_q, *dsa_g, *dsa_pub_key;
+#endif /* WITH_OPENSSL */
if (k == NULL || k->cert == NULL ||
k->cert->certblob == NULL || ca == NULL)
@@ -2609,10 +2569,12 @@ sshkey_certify_custom(struct sshkey *k, struct sshkey *ca, const char *alg,
switch (k->type) {
#ifdef WITH_OPENSSL
case KEY_DSA_CERT:
- if ((ret = sshbuf_put_bignum2(cert, k->dsa->p)) != 0 ||
- (ret = sshbuf_put_bignum2(cert, k->dsa->q)) != 0 ||
- (ret = sshbuf_put_bignum2(cert, k->dsa->g)) != 0 ||
- (ret = sshbuf_put_bignum2(cert, k->dsa->pub_key)) != 0)
+ DSA_get0_pqg(k->dsa, &dsa_p, &dsa_q, &dsa_g);
+ DSA_get0_key(k->dsa, &dsa_pub_key, NULL);
+ if ((ret = sshbuf_put_bignum2(cert, dsa_p)) != 0 ||
+ (ret = sshbuf_put_bignum2(cert, dsa_q)) != 0 ||
+ (ret = sshbuf_put_bignum2(cert, dsa_g)) != 0 ||
+ (ret = sshbuf_put_bignum2(cert, dsa_pub_key)) != 0)
goto out;
break;
# ifdef OPENSSL_HAS_ECC
@@ -2626,8 +2588,9 @@ sshkey_certify_custom(struct sshkey *k, struct sshkey *ca, const char *alg,
break;
# endif /* OPENSSL_HAS_ECC */
case KEY_RSA_CERT:
- if ((ret = sshbuf_put_bignum2(cert, k->rsa->e)) != 0 ||
- (ret = sshbuf_put_bignum2(cert, k->rsa->n)) != 0)
+ RSA_get0_key(k->rsa, &rsa_n, &rsa_e, NULL);
+ if ((ret = sshbuf_put_bignum2(cert, rsa_e)) != 0 ||
+ (ret = sshbuf_put_bignum2(cert, rsa_n)) != 0)
goto out;
break;
#endif /* WITH_OPENSSL */
@@ -2820,18 +2783,25 @@ sshkey_private_serialize_opt(const struct sshkey *key, struct sshbuf *b,
enum sshkey_serialize_rep opts)
{
int r = SSH_ERR_INTERNAL_ERROR;
+#ifdef WITH_OPENSSL
+ const BIGNUM *rsa_n, *rsa_e, *rsa_d, *rsa_iqmp, *rsa_p, *rsa_q;
+ const BIGNUM *dsa_p, *dsa_q, *dsa_g, *dsa_pub_key, *dsa_priv_key;
+#endif /* WITH_OPENSSL */
if ((r = sshbuf_put_cstring(b, sshkey_ssh_name(key))) != 0)
goto out;
switch (key->type) {
#ifdef WITH_OPENSSL
case KEY_RSA:
- if ((r = sshbuf_put_bignum2(b, key->rsa->n)) != 0 ||
- (r = sshbuf_put_bignum2(b, key->rsa->e)) != 0 ||
- (r = sshbuf_put_bignum2(b, key->rsa->d)) != 0 ||
- (r = sshbuf_put_bignum2(b, key->rsa->iqmp)) != 0 ||
- (r = sshbuf_put_bignum2(b, key->rsa->p)) != 0 ||
- (r = sshbuf_put_bignum2(b, key->rsa->q)) != 0)
+ RSA_get0_key(key->rsa, &rsa_n, &rsa_e, &rsa_d);
+ RSA_get0_factors(key->rsa, &rsa_p, &rsa_q);
+ RSA_get0_crt_params(key->rsa, NULL, NULL, &rsa_iqmp);
+ if ((r = sshbuf_put_bignum2(b, rsa_n)) != 0 ||
+ (r = sshbuf_put_bignum2(b, rsa_e)) != 0 ||
+ (r = sshbuf_put_bignum2(b, rsa_d)) != 0 ||
+ (r = sshbuf_put_bignum2(b, rsa_iqmp)) != 0 ||
+ (r = sshbuf_put_bignum2(b, rsa_p)) != 0 ||
+ (r = sshbuf_put_bignum2(b, rsa_q)) != 0)
goto out;
break;
case KEY_RSA_CERT:
@@ -2839,19 +2809,24 @@ sshkey_private_serialize_opt(const struct sshkey *key, struct sshbuf *b,
r = SSH_ERR_INVALID_ARGUMENT;
goto out;
}
+ RSA_get0_key(key->rsa, NULL, NULL, &rsa_d);
+ RSA_get0_factors(key->rsa, &rsa_p, &rsa_q);
+ RSA_get0_crt_params(key->rsa, NULL, NULL, &rsa_iqmp);
if ((r = sshbuf_put_stringb(b, key->cert->certblob)) != 0 ||
- (r = sshbuf_put_bignum2(b, key->rsa->d)) != 0 ||
- (r = sshbuf_put_bignum2(b, key->rsa->iqmp)) != 0 ||
- (r = sshbuf_put_bignum2(b, key->rsa->p)) != 0 ||
- (r = sshbuf_put_bignum2(b, key->rsa->q)) != 0)
+ (r = sshbuf_put_bignum2(b, rsa_d)) != 0 ||
+ (r = sshbuf_put_bignum2(b, rsa_iqmp)) != 0 ||
+ (r = sshbuf_put_bignum2(b, rsa_p)) != 0 ||
+ (r = sshbuf_put_bignum2(b, rsa_q)) != 0)
goto out;
break;
case KEY_DSA:
- if ((r = sshbuf_put_bignum2(b, key->dsa->p)) != 0 ||
- (r = sshbuf_put_bignum2(b, key->dsa->q)) != 0 ||
- (r = sshbuf_put_bignum2(b, key->dsa->g)) != 0 ||
- (r = sshbuf_put_bignum2(b, key->dsa->pub_key)) != 0 ||
- (r = sshbuf_put_bignum2(b, key->dsa->priv_key)) != 0)
+ DSA_get0_pqg(key->dsa, &dsa_p, &dsa_q, &dsa_g);
+ DSA_get0_key(key->dsa, &dsa_pub_key, &dsa_priv_key);
+ if ((r = sshbuf_put_bignum2(b, dsa_p)) != 0 ||
+ (r = sshbuf_put_bignum2(b, dsa_q)) != 0 ||
+ (r = sshbuf_put_bignum2(b, dsa_g)) != 0 ||
+ (r = sshbuf_put_bignum2(b, dsa_pub_key)) != 0 ||
+ (r = sshbuf_put_bignum2(b, dsa_priv_key)) != 0)
goto out;
break;
case KEY_DSA_CERT:
@@ -2859,8 +2834,9 @@ sshkey_private_serialize_opt(const struct sshkey *key, struct sshbuf *b,
r = SSH_ERR_INVALID_ARGUMENT;
goto out;
}
+ DSA_get0_key(key->dsa, NULL, &dsa_priv_key);
if ((r = sshbuf_put_stringb(b, key->cert->certblob)) != 0 ||
- (r = sshbuf_put_bignum2(b, key->dsa->priv_key)) != 0)
+ (r = sshbuf_put_bignum2(b, dsa_priv_key)) != 0)
goto out;
break;
# ifdef OPENSSL_HAS_ECC
@@ -2961,6 +2937,10 @@ sshkey_private_deserialize(struct sshbuf *buf, struct sshkey **kp)
u_char *xmss_pk = NULL, *xmss_sk = NULL;
#ifdef WITH_OPENSSL
BIGNUM *exponent = NULL;
+ BIGNUM *rsa_n = NULL, *rsa_e = NULL, *rsa_d = NULL;
+ BIGNUM *rsa_iqmp = NULL, *rsa_p = NULL, *rsa_q = NULL;
+ BIGNUM *dsa_p = NULL, *dsa_q = NULL, *dsa_g = NULL;
+ BIGNUM *dsa_pub_key = NULL, *dsa_priv_key = NULL;
#endif /* WITH_OPENSSL */
if (kp != NULL)
@@ -2975,18 +2955,44 @@ sshkey_private_deserialize(struct sshbuf *buf, struct sshkey **kp)
r = SSH_ERR_ALLOC_FAIL;
goto out;
}
- if ((r = sshbuf_get_bignum2(buf, k->dsa->p)) != 0 ||
- (r = sshbuf_get_bignum2(buf, k->dsa->q)) != 0 ||
- (r = sshbuf_get_bignum2(buf, k->dsa->g)) != 0 ||
- (r = sshbuf_get_bignum2(buf, k->dsa->pub_key)) != 0 ||
- (r = sshbuf_get_bignum2(buf, k->dsa->priv_key)) != 0)
+ if ((dsa_p = BN_new()) == NULL ||
+ (dsa_q = BN_new()) == NULL ||
+ (dsa_g = BN_new()) == NULL ||
+ (dsa_pub_key = BN_new()) == NULL ||
+ (dsa_priv_key = BN_new()) == NULL) {
+ r = SSH_ERR_ALLOC_FAIL;
+ goto out;
+ }
+ if ((r = sshbuf_get_bignum2(buf, dsa_p)) != 0 ||
+ (r = sshbuf_get_bignum2(buf, dsa_q)) != 0 ||
+ (r = sshbuf_get_bignum2(buf, dsa_g)) != 0 ||
+ (r = sshbuf_get_bignum2(buf, dsa_pub_key)) != 0 ||
+ (r = sshbuf_get_bignum2(buf, dsa_priv_key)) != 0)
goto out;
+ if (!DSA_set0_pqg(k->dsa, dsa_p, dsa_q, dsa_g)) {
+ r = SSH_ERR_LIBCRYPTO_ERROR;
+ goto out;
+ }
+ dsa_p = dsa_q = dsa_g = NULL; /* transferred */
+ if (!DSA_set0_key(k->dsa, dsa_pub_key, dsa_priv_key)) {
+ r = SSH_ERR_LIBCRYPTO_ERROR;
+ goto out;
+ }
+ dsa_pub_key = dsa_priv_key = NULL; /* transferred */
break;
case KEY_DSA_CERT:
+ if ((dsa_priv_key = BN_new()) == NULL) {
+ r = SSH_ERR_ALLOC_FAIL;
+ goto out;
+ }
if ((r = sshkey_froms(buf, &k)) != 0 ||
- (r = sshkey_add_private(k)) != 0 ||
- (r = sshbuf_get_bignum2(buf, k->dsa->priv_key)) != 0)
+ (r = sshbuf_get_bignum2(buf, dsa_priv_key)) != 0)
+ goto out;
+ if (!DSA_set0_key(k->dsa, NULL, dsa_priv_key)) {
+ r = SSH_ERR_LIBCRYPTO_ERROR;
goto out;
+ }
+ dsa_priv_key = NULL; /* transferred */
break;
# ifdef OPENSSL_HAS_ECC
case KEY_ECDSA:
@@ -3027,7 +3033,6 @@ sshkey_private_deserialize(struct sshbuf *buf, struct sshkey **kp)
goto out;
}
if ((r = sshkey_froms(buf, &k)) != 0 ||
- (r = sshkey_add_private(k)) != 0 ||
(r = sshbuf_get_bignum2(buf, exponent)) != 0)
goto out;
if (EC_KEY_set_private_key(k->ecdsa, exponent) != 1) {
@@ -3045,32 +3050,65 @@ sshkey_private_deserialize(struct sshbuf *buf, struct sshkey **kp)
r = SSH_ERR_ALLOC_FAIL;
goto out;
}
- if ((r = sshbuf_get_bignum2(buf, k->rsa->n)) != 0 ||
- (r = sshbuf_get_bignum2(buf, k->rsa->e)) != 0 ||
- (r = sshbuf_get_bignum2(buf, k->rsa->d)) != 0 ||
- (r = sshbuf_get_bignum2(buf, k->rsa->iqmp)) != 0 ||
- (r = sshbuf_get_bignum2(buf, k->rsa->p)) != 0 ||
- (r = sshbuf_get_bignum2(buf, k->rsa->q)) != 0 ||
- (r = ssh_rsa_generate_additional_parameters(k)) != 0)
+ if ((rsa_n = BN_new()) == NULL ||
+ (rsa_e = BN_new()) == NULL ||
+ (rsa_d = BN_new()) == NULL ||
+ (rsa_iqmp = BN_new()) == NULL ||
+ (rsa_p = BN_new()) == NULL ||
+ (rsa_q = BN_new()) == NULL) {
+ r = SSH_ERR_ALLOC_FAIL;
+ goto out;
+ }
+ if ((r = sshbuf_get_bignum2(buf, rsa_n)) != 0 ||
+ (r = sshbuf_get_bignum2(buf, rsa_e)) != 0 ||
+ (r = sshbuf_get_bignum2(buf, rsa_d)) != 0 ||
+ (r = sshbuf_get_bignum2(buf, rsa_iqmp)) != 0 ||
+ (r = sshbuf_get_bignum2(buf, rsa_p)) != 0 ||
+ (r = sshbuf_get_bignum2(buf, rsa_q)) != 0)
goto out;
- if (BN_num_bits(k->rsa->n) < SSH_RSA_MINIMUM_MODULUS_SIZE) {
- r = SSH_ERR_KEY_LENGTH;
+ if (!RSA_set0_key(k->rsa, rsa_n, rsa_e, rsa_d)) {
+ r = SSH_ERR_LIBCRYPTO_ERROR;
+ goto out;
+ }
+ rsa_n = rsa_e = rsa_d = NULL; /* transferred */
+ if (!RSA_set0_factors(k->rsa, rsa_p, rsa_q)) {
+ r = SSH_ERR_LIBCRYPTO_ERROR;
goto out;
}
+ rsa_p = rsa_q = NULL; /* transferred */
+ if ((r = check_rsa_length(k->rsa)) != 0)
+ goto out;
+ if ((r = ssh_rsa_complete_crt_parameters(k, rsa_iqmp)) != 0)
+ goto out;
break;
case KEY_RSA_CERT:
+ if ((rsa_d = BN_new()) == NULL ||
+ (rsa_iqmp = BN_new()) == NULL ||
+ (rsa_p = BN_new()) == NULL ||
+ (rsa_q = BN_new()) == NULL) {
+ r = SSH_ERR_ALLOC_FAIL;
+ goto out;
+ }
if ((r = sshkey_froms(buf, &k)) != 0 ||
- (r = sshkey_add_private(k)) != 0 ||
- (r = sshbuf_get_bignum2(buf, k->rsa->d)) != 0 ||
- (r = sshbuf_get_bignum2(buf, k->rsa->iqmp)) != 0 ||
- (r = sshbuf_get_bignum2(buf, k->rsa->p)) != 0 ||
- (r = sshbuf_get_bignum2(buf, k->rsa->q)) != 0 ||
- (r = ssh_rsa_generate_additional_parameters(k)) != 0)
+ (r = sshbuf_get_bignum2(buf, rsa_d)) != 0 ||
+ (r = sshbuf_get_bignum2(buf, rsa_iqmp)) != 0 ||
+ (r = sshbuf_get_bignum2(buf, rsa_p)) != 0 ||
+ (r = sshbuf_get_bignum2(buf, rsa_q)) != 0)
+ goto out;
+ if (!RSA_set0_key(k->rsa, NULL, NULL, rsa_d)) {
+ r = SSH_ERR_LIBCRYPTO_ERROR;
goto out;
- if (BN_num_bits(k->rsa->n) < SSH_RSA_MINIMUM_MODULUS_SIZE) {
- r = SSH_ERR_KEY_LENGTH;
+ }
+ rsa_d = NULL; /* transferred */
+ if (!RSA_set0_factors(k->rsa, rsa_p, rsa_q)) {
+ r = SSH_ERR_LIBCRYPTO_ERROR;
goto out;
}
+ rsa_p = rsa_q = NULL; /* transferred */
+ if ((r = check_rsa_length(k->rsa)) != 0)
+ goto out;
+ if ((r = ssh_rsa_complete_crt_parameters(k, rsa_iqmp)) != 0)
+ goto out;
break;
#endif /* WITH_OPENSSL */
case KEY_ED25519:
@@ -3091,7 +3129,6 @@ sshkey_private_deserialize(struct sshbuf *buf, struct sshkey **kp)
break;
case KEY_ED25519_CERT:
if ((r = sshkey_froms(buf, &k)) != 0 ||
- (r = sshkey_add_private(k)) != 0 ||
(r = sshbuf_get_string(buf, &ed25519_pk, &pklen)) != 0 ||
(r = sshbuf_get_string(buf, &ed25519_sk, &sklen)) != 0)
goto out;
@@ -3128,7 +3165,6 @@ sshkey_private_deserialize(struct sshbuf *buf, struct sshkey **kp)
break;
case KEY_XMSS_CERT:
if ((r = sshkey_froms(buf, &k)) != 0 ||
- (r = sshkey_add_private(k)) != 0 ||
(r = sshbuf_get_cstring(buf, &xmss_name, NULL)) != 0 ||
(r = sshbuf_get_string(buf, &xmss_pk, &pklen)) != 0 ||
(r = sshbuf_get_string(buf, &xmss_sk, &sklen)) != 0)
@@ -3177,6 +3213,17 @@ sshkey_private_deserialize(struct sshbuf *buf, struct sshkey **kp)
free(curve);
#ifdef WITH_OPENSSL
BN_clear_free(exponent);
+ BN_clear_free(dsa_p);
+ BN_clear_free(dsa_q);
+ BN_clear_free(dsa_g);
+ BN_clear_free(dsa_pub_key);
+ BN_clear_free(dsa_priv_key);
+ BN_clear_free(rsa_n);
+ BN_clear_free(rsa_e);
+ BN_clear_free(rsa_d);
+ BN_clear_free(rsa_p);
+ BN_clear_free(rsa_q);
+ BN_clear_free(rsa_iqmp);
#endif /* WITH_OPENSSL */
sshkey_free(k);
freezero(ed25519_pk, pklen);
@@ -3831,7 +3878,9 @@ translate_libcrypto_error(unsigned long pem_err)
switch (pem_reason) {
case EVP_R_BAD_DECRYPT:
return SSH_ERR_KEY_WRONG_PASSPHRASE;
+#ifdef EVP_R_BN_DECODE_ERROR
case EVP_R_BN_DECODE_ERROR:
+#endif
case EVP_R_DECODE_ERROR:
#ifdef EVP_R_PRIVATE_KEY_DECODE_ERROR
case EVP_R_PRIVATE_KEY_DECODE_ERROR:
@@ -3896,7 +3945,7 @@ sshkey_parse_private_pem_fileblob(struct sshbuf *blob, int type,
r = convert_libcrypto_error();
goto out;
}
- if (pk->type == EVP_PKEY_RSA &&
+ if (EVP_PKEY_base_id(pk) == EVP_PKEY_RSA &&
(type == KEY_UNSPEC || type == KEY_RSA)) {
if ((prv = sshkey_new(KEY_UNSPEC)) == NULL) {
r = SSH_ERR_ALLOC_FAIL;
@@ -3911,11 +3960,9 @@ sshkey_parse_private_pem_fileblob(struct sshbuf *blob, int type,
r = SSH_ERR_LIBCRYPTO_ERROR;
goto out;
}
- if (BN_num_bits(prv->rsa->n) < SSH_RSA_MINIMUM_MODULUS_SIZE) {
- r = SSH_ERR_KEY_LENGTH;
+ if ((r = check_rsa_length(prv->rsa)) != 0)
goto out;
- }
- } else if (pk->type == EVP_PKEY_DSA &&
+ } else if (EVP_PKEY_base_id(pk) == EVP_PKEY_DSA &&
(type == KEY_UNSPEC || type == KEY_DSA)) {
if ((prv = sshkey_new(KEY_UNSPEC)) == NULL) {
r = SSH_ERR_ALLOC_FAIL;
@@ -3927,7 +3974,7 @@ sshkey_parse_private_pem_fileblob(struct sshbuf *blob, int type,
DSA_print_fp(stderr, prv->dsa, 8);
#endif
#ifdef OPENSSL_HAS_ECC
- } else if (pk->type == EVP_PKEY_EC &&
+ } else if (EVP_PKEY_base_id(pk) == EVP_PKEY_EC &&
(type == KEY_UNSPEC || type == KEY_ECDSA)) {
if ((prv = sshkey_new(KEY_UNSPEC)) == NULL) {
r = SSH_ERR_ALLOC_FAIL;
diff --git a/sshkey.h b/sshkey.h
index 5a22a66f..4147ad92 100644
--- a/sshkey.h
+++ b/sshkey.h
@@ -39,6 +39,7 @@
# define EC_POINT void
# endif /* OPENSSL_HAS_ECC */
#else /* WITH_OPENSSL */
+# define BIGNUM void
# define RSA void
# define DSA void
# define EC_KEY void
@@ -127,10 +128,8 @@ struct sshkey {
#define ED25519_PK_SZ crypto_sign_ed25519_PUBLICKEYBYTES
struct sshkey *sshkey_new(int);
-int sshkey_add_private(struct sshkey *);
-struct sshkey *sshkey_new_private(int);
+struct sshkey *sshkey_new_private(int); /* XXX garbage collect */
void sshkey_free(struct sshkey *);
-int sshkey_demote(const struct sshkey *, struct sshkey **);
int sshkey_equal_public(const struct sshkey *,
const struct sshkey *);
int sshkey_equal(const struct sshkey *, const struct sshkey *);
@@ -220,7 +219,7 @@ int sshkey_parse_private_fileblob_type(struct sshbuf *blob, int type,
const char *passphrase, struct sshkey **keyp, char **commentp);
/* XXX should be internal, but used by ssh-keygen */
-int ssh_rsa_generate_additional_parameters(struct sshkey *);
+int ssh_rsa_complete_crt_parameters(struct sshkey *, const BIGNUM *);
/* stateful keys (e.g. XMSS) */
#ifdef NO_ATTRIBUTE_ON_PROTOTYPE_ARGS