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-rw-r--r--lib/libssl/ssl_clnt.c76
-rw-r--r--lib/libssl/ssl_sigalgs.c4
-rw-r--r--lib/libssl/ssl_srvr.c58
3 files changed, 93 insertions, 45 deletions
diff --git a/lib/libssl/ssl_clnt.c b/lib/libssl/ssl_clnt.c
index ac2cddacf9a..298e4b7ff89 100644
--- a/lib/libssl/ssl_clnt.c
+++ b/lib/libssl/ssl_clnt.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssl_clnt.c,v 1.41 2018/11/10 01:19:09 beck Exp $ */
+/* $OpenBSD: ssl_clnt.c,v 1.42 2018/11/11 02:03:23 beck Exp $ */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
@@ -1508,15 +1508,21 @@ ssl3_get_server_key_exchange(SSL *s)
/* if it was signed, check the signature */
if (pkey != NULL) {
+ EVP_PKEY_CTX *pctx;
+ const struct ssl_sigalg *sigalg;
+
if (SSL_USE_SIGALGS(s)) {
- const struct ssl_sigalg *sigalg;
uint16_t sigalg_value;
if (!CBS_get_u16(&cbs, &sigalg_value))
goto truncated;
if ((sigalg = ssl_sigalg(sigalg_value, tls12_sigalgs,
- tls12_sigalgs_len)) == NULL ||
- (md = sigalg->md()) == NULL) {
+ tls12_sigalgs_len)) == NULL) {
+ SSLerror(s, SSL_R_UNKNOWN_DIGEST);
+ al = SSL_AD_DECODE_ERROR;
+ goto f_err;
+ }
+ if ((md = sigalg->md()) == NULL) {
SSLerror(s, SSL_R_UNKNOWN_DIGEST);
al = SSL_AD_DECODE_ERROR;
goto f_err;
@@ -1527,10 +1533,15 @@ ssl3_get_server_key_exchange(SSL *s)
goto f_err;
}
} else if (pkey->type == EVP_PKEY_RSA) {
- md = EVP_md5_sha1();
+ sigalg = ssl_sigalg_lookup(SIGALG_RSA_PKCS1_SHA1);
+ } else if (pkey->type == EVP_PKEY_EC) {
+ sigalg = ssl_sigalg_lookup(SIGALG_ECDSA_SHA1);
} else {
- md = EVP_sha1();
+ SSLerror(s, SSL_R_UNKNOWN_PKEY_TYPE);
+ al = SSL_AD_DECODE_ERROR;
+ goto f_err;
}
+ md = sigalg->md();
if (!CBS_get_u16_length_prefixed(&cbs, &signature))
goto truncated;
@@ -1540,18 +1551,18 @@ ssl3_get_server_key_exchange(SSL *s)
goto f_err;
}
- if (!EVP_VerifyInit_ex(&md_ctx, md, NULL))
+ if (!EVP_DigestVerifyInit(&md_ctx, &pctx, md, NULL, pkey))
goto err;
- if (!EVP_VerifyUpdate(&md_ctx, s->s3->client_random,
+ if (!EVP_DigestVerifyUpdate(&md_ctx, s->s3->client_random,
SSL3_RANDOM_SIZE))
goto err;
- if (!EVP_VerifyUpdate(&md_ctx, s->s3->server_random,
+ if (!EVP_DigestVerifyUpdate(&md_ctx, s->s3->server_random,
SSL3_RANDOM_SIZE))
goto err;
- if (!EVP_VerifyUpdate(&md_ctx, param, param_len))
+ if (!EVP_DigestVerifyUpdate(&md_ctx, param, param_len))
goto err;
- if (EVP_VerifyFinal(&md_ctx, CBS_data(&signature),
- CBS_len(&signature), pkey) <= 0) {
+ if (EVP_DigestVerifyFinal(&md_ctx, CBS_data(&signature),
+ CBS_len(&signature)) <= 0) {
al = SSL_AD_DECRYPT_ERROR;
SSLerror(s, SSL_R_BAD_SIGNATURE);
goto f_err;
@@ -2363,13 +2374,15 @@ ssl3_send_client_verify(SSL *s)
CBB cbb, cert_verify, cbb_signature;
unsigned char data[MD5_DIGEST_LENGTH + SHA_DIGEST_LENGTH];
unsigned char *signature = NULL;
- unsigned int signature_len;
+ unsigned int signature_len = 0;
const unsigned char *hdata;
size_t hdatalen;
EVP_PKEY_CTX *pctx = NULL;
EVP_PKEY *pkey;
EVP_MD_CTX mctx;
const EVP_MD *md;
+ size_t siglen;
+
EVP_MD_CTX_init(&mctx);
@@ -2379,12 +2392,12 @@ ssl3_send_client_verify(SSL *s)
if (!ssl3_handshake_msg_start(s, &cbb, &cert_verify,
SSL3_MT_CERTIFICATE_VERIFY))
goto err;
-
/*
* Create context from key and test if sha1 is allowed as
* digest.
*/
pkey = s->cert->key->privatekey;
+ md = s->cert->key->sigalg->md();
pctx = EVP_PKEY_CTX_new(pkey, NULL);
EVP_PKEY_sign_init(pctx);
@@ -2392,37 +2405,50 @@ ssl3_send_client_verify(SSL *s)
if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1()) <= 0)
ERR_clear_error();
- if ((signature = calloc(1, EVP_PKEY_size(pkey))) == NULL)
- goto err;
-
if (!SSL_USE_SIGALGS(s)) {
tls1_transcript_free(s);
if (!tls1_handshake_hash_value(s, data, sizeof(data),
NULL))
goto err;
}
-
/*
* For TLS v1.2 send signature algorithm and signature
* using agreed digest and cached handshake records.
*/
if (SSL_USE_SIGALGS(s)) {
- md = s->cert->key->sigalg->md();
+ EVP_PKEY_CTX *pctx;
if (!tls1_transcript_data(s, &hdata, &hdatalen) ||
!CBB_add_u16(&cert_verify,
- s->cert->key->sigalg->value)) {
+ s->cert->key->sigalg->value)) {
SSLerror(s, ERR_R_INTERNAL_ERROR);
goto err;
}
- if (!EVP_SignInit_ex(&mctx, md, NULL) ||
- !EVP_SignUpdate(&mctx, hdata, hdatalen) ||
- !EVP_SignFinal(&mctx, signature, &signature_len,
- pkey)) {
+ if (!EVP_DigestSignInit(&mctx, &pctx, md, NULL, pkey)) {
SSLerror(s, ERR_R_EVP_LIB);
goto err;
}
+ if (!EVP_DigestSignUpdate(&mctx, hdata, hdatalen)) {
+ SSLerror(s, ERR_R_EVP_LIB);
+ goto err;
+ }
+ if (!EVP_DigestSignFinal(&mctx, NULL, &siglen) ||
+ siglen == 0) {
+ SSLerror(s, ERR_R_EVP_LIB);
+ goto err;
+ }
+ if ((signature = calloc(1, siglen)) == NULL) {
+ SSLerror(s, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ if (!EVP_DigestSignFinal(&mctx, signature, &siglen)) {
+ SSLerror(s, ERR_R_EVP_LIB);
+ goto err;
+ }
+ signature_len = siglen; /* XXX */
tls1_transcript_free(s);
} else if (pkey->type == EVP_PKEY_RSA) {
+ if ((signature = calloc(1, EVP_PKEY_size(pkey))) == NULL)
+ goto err;
if (RSA_sign(NID_md5_sha1, data,
MD5_DIGEST_LENGTH + SHA_DIGEST_LENGTH, signature,
&signature_len, pkey->pkey.rsa) <= 0 ) {
@@ -2430,6 +2456,8 @@ ssl3_send_client_verify(SSL *s)
goto err;
}
} else if (pkey->type == EVP_PKEY_EC) {
+ if ((signature = calloc(1, EVP_PKEY_size(pkey))) == NULL)
+ goto err;
if (!ECDSA_sign(pkey->save_type,
&data[MD5_DIGEST_LENGTH], SHA_DIGEST_LENGTH,
signature, &signature_len, pkey->pkey.ec)) {
diff --git a/lib/libssl/ssl_sigalgs.c b/lib/libssl/ssl_sigalgs.c
index cee3f0bf6de..5dc261810bf 100644
--- a/lib/libssl/ssl_sigalgs.c
+++ b/lib/libssl/ssl_sigalgs.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssl_sigalgs.c,v 1.5 2018/11/10 08:42:39 beck Exp $ */
+/* $OpenBSD: ssl_sigalgs.c,v 1.6 2018/11/11 02:03:23 beck Exp $ */
/*
* Copyright (c) 2018, Bob Beck <beck@openbsd.org>
*
@@ -83,7 +83,6 @@ const struct ssl_sigalg sigalgs[] = {
.pkey_idx = SSL_PKEY_GOST01,
},
#endif
-#ifdef LIBRESSL_HAS_TLS1_3
{
.value = SIGALG_RSA_PSS_RSAE_SHA256,
.md = EVP_sha256,
@@ -126,7 +125,6 @@ const struct ssl_sigalg sigalgs[] = {
.pkey_idx = SSL_PKEY_RSA_SIGN,
.flags = SIGALG_FLAG_RSA_PSS,
},
-#endif
{
.value = SIGALG_RSA_PKCS1_SHA224,
.md = EVP_sha224,
diff --git a/lib/libssl/ssl_srvr.c b/lib/libssl/ssl_srvr.c
index 587a538060a..f1b8a494688 100644
--- a/lib/libssl/ssl_srvr.c
+++ b/lib/libssl/ssl_srvr.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssl_srvr.c,v 1.55 2018/11/10 01:19:09 beck Exp $ */
+/* $OpenBSD: ssl_srvr.c,v 1.56 2018/11/11 02:03:23 beck Exp $ */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
@@ -345,7 +345,7 @@ ssl3_accept(SSL *s)
D1I(s)->handshake_write_seq = 1;
D1I(s)->next_handshake_write_seq = 1;
goto end;
- }
+ }
} else {
if (s->internal->rwstate != SSL_X509_LOOKUP) {
ret = ssl3_get_client_hello(s);
@@ -1485,12 +1485,13 @@ ssl3_send_server_key_exchange(SSL *s)
CBB cbb, cbb_params, cbb_signature, server_kex;
const struct ssl_sigalg *sigalg = NULL;
unsigned char *signature = NULL;
- unsigned int signature_len;
+ size_t signature_len = 0;
unsigned char *params = NULL;
size_t params_len;
const EVP_MD *md = NULL;
unsigned long type;
EVP_MD_CTX md_ctx;
+ EVP_PKEY_CTX *pctx;
EVP_PKEY *pkey;
int al;
@@ -1544,21 +1545,34 @@ ssl3_send_server_key_exchange(SSL *s)
}
}
- if ((signature = calloc(1, EVP_PKEY_size(pkey))) == NULL)
+ if (!EVP_DigestSignInit(&md_ctx, &pctx, md, NULL, pkey)) {
+ SSLerror(s, ERR_R_EVP_LIB);
goto err;
-
- if (!EVP_SignInit_ex(&md_ctx, md, NULL))
+ }
+ if (!EVP_DigestSignUpdate(&md_ctx, s->s3->client_random,
+ SSL3_RANDOM_SIZE)) {
+ SSLerror(s, ERR_R_EVP_LIB);
goto err;
- if (!EVP_SignUpdate(&md_ctx, s->s3->client_random,
- SSL3_RANDOM_SIZE))
+ }
+ if (!EVP_DigestSignUpdate(&md_ctx, s->s3->server_random,
+ SSL3_RANDOM_SIZE)) {
+ SSLerror(s, ERR_R_EVP_LIB);
+ goto err;
+ }
+ if (!EVP_DigestSignUpdate(&md_ctx, params, params_len)) {
+ SSLerror(s, ERR_R_EVP_LIB);
goto err;
- if (!EVP_SignUpdate(&md_ctx, s->s3->server_random,
- SSL3_RANDOM_SIZE))
+ }
+ if (!EVP_DigestSignFinal(&md_ctx, NULL, &signature_len) ||
+ !signature_len) {
+ SSLerror(s, ERR_R_EVP_LIB);
goto err;
- if (!EVP_SignUpdate(&md_ctx, params, params_len))
+ }
+ if ((signature = calloc(1, signature_len)) == NULL) {
+ SSLerror(s, ERR_R_MALLOC_FAILURE);
goto err;
- if (!EVP_SignFinal(&md_ctx, signature, &signature_len,
- pkey)) {
+ }
+ if (!EVP_DigestSignFinal(&md_ctx, signature, &signature_len)) {
SSLerror(s, ERR_R_EVP_LIB);
goto err;
}
@@ -2071,6 +2085,7 @@ int
ssl3_get_cert_verify(SSL *s)
{
CBS cbs, signature;
+ const struct ssl_sigalg *sigalg;
const EVP_MD *md = NULL;
EVP_PKEY *pkey = NULL;
X509 *peer = NULL;
@@ -2135,14 +2150,16 @@ ssl3_get_cert_verify(SSL *s)
* If key is GOST and n is exactly 64, it is a bare
* signature without length field.
*/
+ /* This hack is awful and needs to die in fire */
if ((pkey->type == NID_id_GostR3410_94 ||
pkey->type == NID_id_GostR3410_2001) && CBS_len(&cbs) == 64) {
+ if (SSL_USE_SIGALGS(s))
+ goto truncated;
CBS_dup(&cbs, &signature);
if (!CBS_skip(&cbs, CBS_len(&cbs)))
goto err;
} else {
if (SSL_USE_SIGALGS(s)) {
- const struct ssl_sigalg *sigalg;
uint16_t sigalg_value;
if (!CBS_get_u16(&cbs, &sigalg_value))
@@ -2175,19 +2192,24 @@ ssl3_get_cert_verify(SSL *s)
}
if (SSL_USE_SIGALGS(s)) {
+ EVP_PKEY_CTX *pctx;
if (!tls1_transcript_data(s, &hdata, &hdatalen)) {
SSLerror(s, ERR_R_INTERNAL_ERROR);
al = SSL_AD_INTERNAL_ERROR;
goto f_err;
}
- if (!EVP_VerifyInit_ex(&mctx, md, NULL) ||
- !EVP_VerifyUpdate(&mctx, hdata, hdatalen)) {
+ if (!EVP_DigestVerifyInit(&mctx, &pctx, md, NULL, pkey)) {
+ SSLerror(s, ERR_R_EVP_LIB);
+ al = SSL_AD_INTERNAL_ERROR;
+ goto f_err;
+ }
+ if (!EVP_DigestVerifyUpdate(&mctx, hdata, hdatalen)) {
SSLerror(s, ERR_R_EVP_LIB);
al = SSL_AD_INTERNAL_ERROR;
goto f_err;
}
- if (EVP_VerifyFinal(&mctx, CBS_data(&signature),
- CBS_len(&signature), pkey) <= 0) {
+ if (EVP_DigestVerifyFinal(&mctx, CBS_data(&signature),
+ CBS_len(&signature)) <= 0) {
al = SSL_AD_DECRYPT_ERROR;
SSLerror(s, SSL_R_BAD_SIGNATURE);
goto f_err;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 01:30:31 +0000