147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org/* 247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org * Copyright 2004 The WebRTC Project Authors. All rights reserved. 347be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org * 447be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org * Use of this source code is governed by a BSD-style license 547be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org * that can be found in the LICENSE file in the root of the source 647be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org * tree. An additional intellectual property rights grant can be found 747be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org * in the file PATENTS. All contributing project authors may 847be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org * be found in the AUTHORS file in the root of the source tree. 947be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org */ 1047be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 1147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org#if HAVE_OPENSSL_SSL_H 1247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 1347be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org#include "webrtc/base/openssldigest.h" 1447be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 1547be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org#include "webrtc/base/common.h" 1647be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org#include "webrtc/base/openssl.h" 1747be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 1847be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.orgnamespace rtc { 1947be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 2047be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.orgOpenSSLDigest::OpenSSLDigest(const std::string& algorithm) { 2147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org EVP_MD_CTX_init(&ctx_); 2247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org if (GetDigestEVP(algorithm, &md_)) { 2347be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org EVP_DigestInit_ex(&ctx_, md_, NULL); 2447be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org } else { 2547be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org md_ = NULL; 2647be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org } 2747be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org} 2847be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 2947be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.orgOpenSSLDigest::~OpenSSLDigest() { 3047be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org EVP_MD_CTX_cleanup(&ctx_); 3147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org} 3247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 3347be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.orgsize_t OpenSSLDigest::Size() const { 3447be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org if (!md_) { 3547be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org return 0; 3647be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org } 3747be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org return EVP_MD_size(md_); 3847be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org} 3947be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 4047be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.orgvoid OpenSSLDigest::Update(const void* buf, size_t len) { 4147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org if (!md_) { 4247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org return; 4347be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org } 4447be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org EVP_DigestUpdate(&ctx_, buf, len); 4547be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org} 4647be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 4747be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.orgsize_t OpenSSLDigest::Finish(void* buf, size_t len) { 4847be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org if (!md_ || len < Size()) { 4947be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org return 0; 5047be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org } 5147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org unsigned int md_len; 5247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org EVP_DigestFinal_ex(&ctx_, static_cast<unsigned char*>(buf), &md_len); 5347be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org EVP_DigestInit_ex(&ctx_, md_, NULL); // prepare for future Update()s 5447be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org ASSERT(md_len == Size()); 5547be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org return md_len; 5647be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org} 5747be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 5847be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.orgbool OpenSSLDigest::GetDigestEVP(const std::string& algorithm, 5947be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org const EVP_MD** mdp) { 6047be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org const EVP_MD* md; 6147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org if (algorithm == DIGEST_MD5) { 6247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org md = EVP_md5(); 6347be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org } else if (algorithm == DIGEST_SHA_1) { 6447be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org md = EVP_sha1(); 6547be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org } else if (algorithm == DIGEST_SHA_224) { 6647be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org md = EVP_sha224(); 6747be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org } else if (algorithm == DIGEST_SHA_256) { 6847be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org md = EVP_sha256(); 6947be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org } else if (algorithm == DIGEST_SHA_384) { 7047be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org md = EVP_sha384(); 7147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org } else if (algorithm == DIGEST_SHA_512) { 7247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org md = EVP_sha512(); 7347be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org } else { 7447be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org return false; 7547be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org } 7647be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 7747be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org // Can't happen 7847be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org ASSERT(EVP_MD_size(md) >= 16); 7947be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org *mdp = md; 8047be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org return true; 8147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org} 8247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 8347be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.orgbool OpenSSLDigest::GetDigestName(const EVP_MD* md, 8447be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org std::string* algorithm) { 8547be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org ASSERT(md != NULL); 8647be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org ASSERT(algorithm != NULL); 8747be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 8847be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org int md_type = EVP_MD_type(md); 8947be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org if (md_type == NID_md5) { 9047be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org *algorithm = DIGEST_MD5; 9147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org } else if (md_type == NID_sha1) { 9247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org *algorithm = DIGEST_SHA_1; 9347be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org } else if (md_type == NID_sha224) { 9447be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org *algorithm = DIGEST_SHA_224; 9547be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org } else if (md_type == NID_sha256) { 9647be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org *algorithm = DIGEST_SHA_256; 9747be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org } else if (md_type == NID_sha384) { 9847be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org *algorithm = DIGEST_SHA_384; 9947be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org } else if (md_type == NID_sha512) { 10047be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org *algorithm = DIGEST_SHA_512; 10147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org } else { 10247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org algorithm->clear(); 10347be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org return false; 10447be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org } 10547be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 10647be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org return true; 10747be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org} 10847be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 10947be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.orgbool OpenSSLDigest::GetDigestSize(const std::string& algorithm, 11047be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org size_t* length) { 11147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org const EVP_MD *md; 11247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org if (!GetDigestEVP(algorithm, &md)) 11347be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org return false; 11447be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 11547be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org *length = EVP_MD_size(md); 11647be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org return true; 11747be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org} 11847be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 11947be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org} // namespace rtc 12047be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 12147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org#endif // HAVE_OPENSSL_SSL_H 12247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 123