1 // Copyright 2012 The Chromium OS 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 "third_party/chromium/crypto/sha2.h"
6
7 #include <algorithm>
8 #include <openssl/sha.h>
9
10 #include <base/memory/scoped_ptr.h>
11
12 namespace crypto {
13
SHA256HashString(const std::string & str,uint8_t * output,size_t len)14 void SHA256HashString(const std::string& str, uint8_t* output, size_t len) {
15 std::string hash = SHA256HashString(str);
16 len = std::min(hash.size(), len);
17 std::copy(hash.begin(), hash.begin() + len, output);
18 }
19
SHA256HashString(const std::string & str)20 std::string SHA256HashString(const std::string& str) {
21 SHA256_CTX sha_context;
22 SHA256_Init(&sha_context);
23 SHA256_Update(&sha_context, str.data(), str.size());
24
25 std::string hash(kSHA256Length, 0);
26 SHA256_Final(reinterpret_cast<uint8_t*>(&hash[0]), &sha_context);
27 return hash;
28 }
29
30 } // namespace crypto
31