1ddb351dbec246cf1fab5ec20d2d5520909041de1Kristian Monsen// Copyright (c) 2011 The Chromium Authors. All rights reserved. 2c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch// Use of this source code is governed by a BSD-style license that can be 3c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch// found in the LICENSE file. 4c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 5c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "base/sha1.h" 6c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 7c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include <windows.h> 8c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include <wincrypt.h> 9c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 10ddb351dbec246cf1fab5ec20d2d5520909041de1Kristian Monsen// This file is not being compiled at the moment (see bug 47218). If we keep 11ddb351dbec246cf1fab5ec20d2d5520909041de1Kristian Monsen// sha1 inside base, we cannot depend on src/crypto. 12ddb351dbec246cf1fab5ec20d2d5520909041de1Kristian Monsen// #include "crypto/scoped_capi_types.h" 13c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "base/logging.h" 14c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 15c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochnamespace base { 16c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 17731df977c0511bca2206b5f333555b1205ff1f43Iain Merrickstd::string SHA1HashString(const std::string& str) { 18731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick ScopedHCRYPTPROV provider; 19731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick if (!CryptAcquireContext(provider.receive(), NULL, NULL, PROV_RSA_FULL, 20731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick CRYPT_VERIFYCONTEXT)) { 21c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch LOG(ERROR) << "CryptAcquireContext failed: " << GetLastError(); 22731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick return std::string(SHA1_LENGTH, '\0'); 23c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 24c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 25731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick { 26731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick ScopedHCRYPTHASH hash; 27731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick if (!CryptCreateHash(provider, CALG_SHA1, 0, 0, hash.receive())) { 28731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick LOG(ERROR) << "CryptCreateHash failed: " << GetLastError(); 29731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick return std::string(SHA1_LENGTH, '\0'); 30731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick } 31731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick 32731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick if (!CryptHashData(hash, reinterpret_cast<CONST BYTE*>(str.data()), 33731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick static_cast<DWORD>(str.length()), 0)) { 34731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick LOG(ERROR) << "CryptHashData failed: " << GetLastError(); 35731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick return std::string(SHA1_LENGTH, '\0'); 36731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick } 37731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick 38731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick DWORD hash_len = 0; 39731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick DWORD buffer_size = sizeof hash_len; 40731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick if (!CryptGetHashParam(hash, HP_HASHSIZE, 41731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick reinterpret_cast<unsigned char*>(&hash_len), 42731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick &buffer_size, 0)) { 43731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick LOG(ERROR) << "CryptGetHashParam(HP_HASHSIZE) failed: " << GetLastError(); 44731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick return std::string(SHA1_LENGTH, '\0'); 45731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick } 46731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick 47731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick std::string result; 48731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick if (!CryptGetHashParam(hash, HP_HASHVAL, 49731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick // We need the + 1 here not because the call will write a trailing \0, 50731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick // but so that result.length() is correctly set to |hash_len|. 51731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick reinterpret_cast<BYTE*>(WriteInto(&result, hash_len + 1)), &hash_len, 52731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick 0))) { 53731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick LOG(ERROR) << "CryptGetHashParam(HP_HASHVAL) failed: " << GetLastError(); 54731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick return std::string(SHA1_LENGTH, '\0'); 55731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick } 56731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick 57731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick if (hash_len != SHA1_LENGTH) { 58731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick LOG(ERROR) << "Returned hash value is wrong length: " << hash_len 59731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick << " should be " << SHA1_LENGTH; 60731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick return std::string(SHA1_LENGTH, '\0'); 61731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick } 62731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick 63731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick return result; 64c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 65c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 66c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 67c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} // namespace base 68