Remove the CryptoAPI implementation of SHA-1

base/sha1_win.cc

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "base/sha1.h"
-
-#include <windows.h>
-#include <wincrypt.h>
-
-// This file is not being compiled at the moment (see bug 47218). If we keep
-// sha1 inside base, we cannot depend on src/crypto.
-// #include "crypto/scoped_capi_types.h"
-#include "base/logging.h"
-
-namespace base {
-
-std::string SHA1HashString(const std::string& str) {
-  ScopedHCRYPTPROV provider;
-  if (!CryptAcquireContext(provider.receive(), NULL, NULL, PROV_RSA_FULL,
-                           CRYPT_VERIFYCONTEXT)) {
-    DPLOG(ERROR) << "CryptAcquireContext failed";
-    return std::string(kSHA1Length, '\0');
-  }
-
-  {
-    ScopedHCRYPTHASH hash;
-    if (!CryptCreateHash(provider, CALG_SHA1, 0, 0, hash.receive())) {
-      DPLOG(ERROR) << "CryptCreateHash failed";
-      return std::string(kSHA1Length, '\0');
-    }
-
-    if (!CryptHashData(hash, reinterpret_cast<CONST BYTE*>(str.data()),
-                       static_cast<DWORD>(str.length()), 0)) {
-      DPLOG(ERROR) << "CryptHashData failed";
-      return std::string(kSHA1Length, '\0');
-    }
-
-    DWORD hash_len = 0;
-    DWORD buffer_size = sizeof hash_len;
-    if (!CryptGetHashParam(hash, HP_HASHSIZE,
-                           reinterpret_cast<unsigned char*>(&hash_len),
-                           &buffer_size, 0)) {
-      DPLOG(ERROR) << "CryptGetHashParam(HP_HASHSIZE) failed";
-      return std::string(kSHA1Length, '\0');
-    }
-
-    std::string result;
-    if (!CryptGetHashParam(hash, HP_HASHVAL,
-        // We need the + 1 here not because the call will write a trailing \0,
-        // but so that result.length() is correctly set to |hash_len|.
-        reinterpret_cast<BYTE*>(WriteInto(&result, hash_len + 1)), &hash_len,
-        0))) {
-      DPLOG(ERROR) << "CryptGetHashParam(HP_HASHVAL) failed";
-      return std::string(kSHA1Length, '\0');
-    }
-
-    if (hash_len != kSHA1Length) {
-      DLOG(ERROR) << "Returned hash value is wrong length: " << hash_len
-                  << " should be " << kSHA1Length;
-      return std::string(kSHA1Length, '\0');
-    }
-
-    return result;
-  }
-}
-
-}  // namespace base