diff options
Diffstat (limited to 'openssl/crypto/pem/pvkfmt.c')
| -rw-r--r-- | openssl/crypto/pem/pvkfmt.c | 58 |
1 files changed, 35 insertions, 23 deletions
diff --git a/openssl/crypto/pem/pvkfmt.c b/openssl/crypto/pem/pvkfmt.c index 5f130c452..b1bf71a5d 100644 --- a/openssl/crypto/pem/pvkfmt.c +++ b/openssl/crypto/pem/pvkfmt.c @@ -709,13 +709,16 @@ static int derive_pvk_key(unsigned char *key, const unsigned char *pass, int passlen) { EVP_MD_CTX mctx; + int rv = 1; EVP_MD_CTX_init(&mctx); - EVP_DigestInit_ex(&mctx, EVP_sha1(), NULL); - EVP_DigestUpdate(&mctx, salt, saltlen); - EVP_DigestUpdate(&mctx, pass, passlen); - EVP_DigestFinal_ex(&mctx, key, NULL); + if (!EVP_DigestInit_ex(&mctx, EVP_sha1(), NULL) + || !EVP_DigestUpdate(&mctx, salt, saltlen) + || !EVP_DigestUpdate(&mctx, pass, passlen) + || !EVP_DigestFinal_ex(&mctx, key, NULL)) + rv = 0; + EVP_MD_CTX_cleanup(&mctx); - return 1; + return rv; } @@ -727,11 +730,12 @@ static EVP_PKEY *do_PVK_body(const unsigned char **in, const unsigned char *p = *in; unsigned int magic; unsigned char *enctmp = NULL, *q; + EVP_CIPHER_CTX cctx; + EVP_CIPHER_CTX_init(&cctx); if (saltlen) { char psbuf[PEM_BUFSIZE]; unsigned char keybuf[20]; - EVP_CIPHER_CTX cctx; int enctmplen, inlen; if (cb) inlen=cb(psbuf,PEM_BUFSIZE,0,u); @@ -757,37 +761,41 @@ static EVP_PKEY *do_PVK_body(const unsigned char **in, p += 8; inlen = keylen - 8; q = enctmp + 8; - EVP_CIPHER_CTX_init(&cctx); - EVP_DecryptInit_ex(&cctx, EVP_rc4(), NULL, keybuf, NULL); - EVP_DecryptUpdate(&cctx, q, &enctmplen, p, inlen); - EVP_DecryptFinal_ex(&cctx, q + enctmplen, &enctmplen); + if (!EVP_DecryptInit_ex(&cctx, EVP_rc4(), NULL, keybuf, NULL)) + goto err; + if (!EVP_DecryptUpdate(&cctx, q, &enctmplen, p, inlen)) + goto err; + if (!EVP_DecryptFinal_ex(&cctx, q + enctmplen, &enctmplen)) + goto err; magic = read_ledword((const unsigned char **)&q); if (magic != MS_RSA2MAGIC && magic != MS_DSS2MAGIC) { q = enctmp + 8; memset(keybuf + 5, 0, 11); - EVP_DecryptInit_ex(&cctx, EVP_rc4(), NULL, keybuf, - NULL); + if (!EVP_DecryptInit_ex(&cctx, EVP_rc4(), NULL, keybuf, + NULL)) + goto err; OPENSSL_cleanse(keybuf, 20); - EVP_DecryptUpdate(&cctx, q, &enctmplen, p, inlen); - EVP_DecryptFinal_ex(&cctx, q + enctmplen, - &enctmplen); + if (!EVP_DecryptUpdate(&cctx, q, &enctmplen, p, inlen)) + goto err; + if (!EVP_DecryptFinal_ex(&cctx, q + enctmplen, + &enctmplen)) + goto err; magic = read_ledword((const unsigned char **)&q); if (magic != MS_RSA2MAGIC && magic != MS_DSS2MAGIC) { - EVP_CIPHER_CTX_cleanup(&cctx); PEMerr(PEM_F_DO_PVK_BODY, PEM_R_BAD_DECRYPT); goto err; } } else OPENSSL_cleanse(keybuf, 20); - EVP_CIPHER_CTX_cleanup(&cctx); p = enctmp; } ret = b2i_PrivateKey(&p, keylen); err: + EVP_CIPHER_CTX_cleanup(&cctx); if (enctmp && saltlen) OPENSSL_free(enctmp); return ret; @@ -841,6 +849,8 @@ static int i2b_PVK(unsigned char **out, EVP_PKEY*pk, int enclevel, { int outlen = 24, pklen; unsigned char *p, *salt = NULL; + EVP_CIPHER_CTX cctx; + EVP_CIPHER_CTX_init(&cctx); if (enclevel) outlen += PVK_SALTLEN; pklen = do_i2b(NULL, pk, 0); @@ -885,7 +895,6 @@ static int i2b_PVK(unsigned char **out, EVP_PKEY*pk, int enclevel, { char psbuf[PEM_BUFSIZE]; unsigned char keybuf[20]; - EVP_CIPHER_CTX cctx; int enctmplen, inlen; if (cb) inlen=cb(psbuf,PEM_BUFSIZE,1,u); @@ -902,16 +911,19 @@ static int i2b_PVK(unsigned char **out, EVP_PKEY*pk, int enclevel, if (enclevel == 1) memset(keybuf + 5, 0, 11); p = salt + PVK_SALTLEN + 8; - EVP_CIPHER_CTX_init(&cctx); - EVP_EncryptInit_ex(&cctx, EVP_rc4(), NULL, keybuf, NULL); + if (!EVP_EncryptInit_ex(&cctx, EVP_rc4(), NULL, keybuf, NULL)) + goto error; OPENSSL_cleanse(keybuf, 20); - EVP_DecryptUpdate(&cctx, p, &enctmplen, p, pklen - 8); - EVP_DecryptFinal_ex(&cctx, p + enctmplen, &enctmplen); - EVP_CIPHER_CTX_cleanup(&cctx); + if (!EVP_DecryptUpdate(&cctx, p, &enctmplen, p, pklen - 8)) + goto error; + if (!EVP_DecryptFinal_ex(&cctx, p + enctmplen, &enctmplen)) + goto error; } + EVP_CIPHER_CTX_cleanup(&cctx); return outlen; error: + EVP_CIPHER_CTX_cleanup(&cctx); return -1; } |