base/crypto/secure_hash_default.cc

   1 // Copyright (c) 2011 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.
   4
   5 #include "base/crypto/secure_hash.h"
   6
   7 #include "base/logging.h"
   8 #include "base/third_party/nss/blapi.h"
   9 #include "base/third_party/nss/sha256.h"
  10
  11 namespace base {
  12
  13 namespace {
  14
  15 class SecureHashSHA256NSS : public SecureHash {
  16  public:
  17   SecureHashSHA256NSS() {
  18     SHA256_Begin(&ctx_);
  19   }
  20
  21   virtual ~SecureHashSHA256NSS() {
  22   }
  23
  24   virtual void Update(const void* input, size_t len) {
  25     SHA256_Update(&ctx_, static_cast<const unsigned char*>(input), len);
  26   }
  27
  28   virtual void Finish(void* output, size_t len) {
  29     SHA256_End(&ctx_, static_cast<unsigned char*>(output), NULL,
  30                static_cast<unsigned int>(len));
  31   }
  32
  33  private:
  34   SHA256Context ctx_;
  35 };
  36
  37 }  // namespace
  38
  39 SecureHash* SecureHash::Create(Algorithm algorithm) {
  40   switch (algorithm) {
  41     case SHA256:
  42       return new SecureHashSHA256NSS();
  43     default:
  44       NOTIMPLEMENTED();
  45       return NULL;
  46   }
  47 }
  48
  49 }  // namespace base