1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "crypto/secure_hash.h"
7 #include "base/logging.h"
8 #include "base/pickle.h"
9 #include "crypto/third_party/nss/chromium-blapi.h"
10 #include "crypto/third_party/nss/chromium-sha256.h"
16 const char kSHA256Descriptor[] = "NSS";
18 class SecureHashSHA256NSS : public SecureHash {
20 static const int kSecureHashVersion = 1;
22 SecureHashSHA256NSS() {
26 virtual ~SecureHashSHA256NSS() {
27 memset(&ctx_, 0, sizeof(ctx_));
30 // SecureHash implementation:
31 virtual void Update(const void* input, size_t len) OVERRIDE {
32 SHA256_Update(&ctx_, static_cast<const unsigned char*>(input), len);
35 virtual void Finish(void* output, size_t len) OVERRIDE {
36 SHA256_End(&ctx_, static_cast<unsigned char*>(output), NULL,
37 static_cast<unsigned int>(len));
40 virtual bool Serialize(Pickle* pickle) OVERRIDE;
41 virtual bool Deserialize(PickleIterator* data_iterator) OVERRIDE;
47 bool SecureHashSHA256NSS::Serialize(Pickle* pickle) {
51 if (!pickle->WriteInt(kSecureHashVersion) ||
52 !pickle->WriteString(kSHA256Descriptor) ||
53 !pickle->WriteBytes(&ctx_, sizeof(ctx_))) {
60 bool SecureHashSHA256NSS::Deserialize(PickleIterator* data_iterator) {
62 if (!data_iterator->ReadInt(&version))
65 if (version > kSecureHashVersion)
66 return false; // We don't know how to deal with this.
69 if (!data_iterator->ReadString(&type))
72 if (type != kSHA256Descriptor)
73 return false; // It's the wrong kind.
75 const char* data = NULL;
76 if (!data_iterator->ReadBytes(&data, sizeof(ctx_)))
79 memcpy(&ctx_, data, sizeof(ctx_));
86 SecureHash* SecureHash::Create(Algorithm algorithm) {
89 return new SecureHashSHA256NSS();