15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2011 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/sha1.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <windows.h> 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <wincrypt.h> 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// This file is not being compiled at the moment (see bug 47218). If we keep 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// sha1 inside base, we cannot depend on src/crypto. 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// #include "crypto/scoped_capi_types.h" 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/logging.h" 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace base { 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)std::string SHA1HashString(const std::string& str) { 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScopedHCRYPTPROV provider; 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!CryptAcquireContext(provider.receive(), NULL, NULL, PROV_RSA_FULL, 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CRYPT_VERIFYCONTEXT)) { 212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DLOG_GETLASTERROR(ERROR) << "CryptAcquireContext failed"; 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return std::string(kSHA1Length, '\0'); 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScopedHCRYPTHASH hash; 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!CryptCreateHash(provider, CALG_SHA1, 0, 0, hash.receive())) { 282a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DLOG_GETLASTERROR(ERROR) << "CryptCreateHash failed"; 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return std::string(kSHA1Length, '\0'); 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!CryptHashData(hash, reinterpret_cast<CONST BYTE*>(str.data()), 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static_cast<DWORD>(str.length()), 0)) { 342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DLOG_GETLASTERROR(ERROR) << "CryptHashData failed"; 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return std::string(kSHA1Length, '\0'); 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DWORD hash_len = 0; 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DWORD buffer_size = sizeof hash_len; 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!CryptGetHashParam(hash, HP_HASHSIZE, 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) reinterpret_cast<unsigned char*>(&hash_len), 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) &buffer_size, 0)) { 432a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DLOG_GETLASTERROR(ERROR) << "CryptGetHashParam(HP_HASHSIZE) failed"; 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return std::string(kSHA1Length, '\0'); 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string result; 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!CryptGetHashParam(hash, HP_HASHVAL, 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // We need the + 1 here not because the call will write a trailing \0, 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // but so that result.length() is correctly set to |hash_len|. 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) reinterpret_cast<BYTE*>(WriteInto(&result, hash_len + 1)), &hash_len, 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 0))) { 532a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DLOG_GETLASTERROR(ERROR) << "CryptGetHashParam(HP_HASHVAL) failed"; 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return std::string(kSHA1Length, '\0'); 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (hash_len != kSHA1Length) { 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DLOG(ERROR) << "Returned hash value is wrong length: " << hash_len 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) << " should be " << kSHA1Length; 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return std::string(kSHA1Length, '\0'); 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return result; 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace base 68