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9 * this list of conditions and the following disclaimer.
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28 #if HAVE_OPENSSL_SSL_H
30 #include "talk/base/openssldigest.h"
32 #include "talk/base/common.h"
36 OpenSSLDigest::OpenSSLDigest(const std::string& algorithm) {
37 EVP_MD_CTX_init(&ctx_);
38 if (GetDigestEVP(algorithm, &md_)) {
39 EVP_DigestInit_ex(&ctx_, md_, NULL);
45 OpenSSLDigest::~OpenSSLDigest() {
46 EVP_MD_CTX_cleanup(&ctx_);
49 size_t OpenSSLDigest::Size() const {
53 return EVP_MD_size(md_);
56 void OpenSSLDigest::Update(const void* buf, size_t len) {
60 EVP_DigestUpdate(&ctx_, buf, len);
63 size_t OpenSSLDigest::Finish(void* buf, size_t len) {
64 if (!md_ || len < Size()) {
68 EVP_DigestFinal_ex(&ctx_, static_cast<unsigned char*>(buf), &md_len);
69 EVP_DigestInit_ex(&ctx_, md_, NULL); // prepare for future Update()s
70 ASSERT(md_len == Size());
74 bool OpenSSLDigest::GetDigestEVP(const std::string& algorithm,
77 if (algorithm == DIGEST_MD5) {
79 } else if (algorithm == DIGEST_SHA_1) {
81 #if OPENSSL_VERSION_NUMBER >= 0x00908000L
82 } else if (algorithm == DIGEST_SHA_224) {
84 } else if (algorithm == DIGEST_SHA_256) {
86 } else if (algorithm == DIGEST_SHA_384) {
88 } else if (algorithm == DIGEST_SHA_512) {
96 ASSERT(EVP_MD_size(md) >= 16);
101 bool OpenSSLDigest::GetDigestName(const EVP_MD* md,
102 std::string* algorithm) {
104 ASSERT(algorithm != NULL);
106 int md_type = EVP_MD_type(md);
107 if (md_type == NID_md5) {
108 *algorithm = DIGEST_MD5;
109 } else if (md_type == NID_sha1) {
110 *algorithm = DIGEST_SHA_1;
111 #if OPENSSL_VERSION_NUMBER >= 0x00908000L
112 } else if (md_type == NID_sha224) {
113 *algorithm = DIGEST_SHA_224;
114 } else if (md_type == NID_sha256) {
115 *algorithm = DIGEST_SHA_256;
116 } else if (md_type == NID_sha384) {
117 *algorithm = DIGEST_SHA_384;
118 } else if (md_type == NID_sha512) {
119 *algorithm = DIGEST_SHA_512;
129 bool OpenSSLDigest::GetDigestSize(const std::string& algorithm,
132 if (!GetDigestEVP(algorithm, &md))
135 *length = EVP_MD_size(md);
139 } // namespace talk_base
141 #endif // HAVE_OPENSSL_SSL_H