15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 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 "crypto/signature_creator.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <openssl/evp.h> 87dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch#include <openssl/rsa.h> 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/logging.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/memory/scoped_ptr.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/stl_util.h" 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "crypto/openssl_util.h" 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "crypto/rsa_private_key.h" 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace crypto { 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)SignatureCreator* SignatureCreator::Create(RSAPrivateKey* key) { 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OpenSSLErrStackTracer err_tracer(FROM_HERE); 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_ptr<SignatureCreator> result(new SignatureCreator); 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) result->key_ = key; 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!EVP_SignInit_ex(result->sign_context_, EVP_sha1(), NULL)) 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return result.release(); 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 287dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch// static 297dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdochbool SignatureCreator::Sign(RSAPrivateKey* key, 307dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch const uint8* data, 317dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch int data_len, 327dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch std::vector<uint8>* signature) { 337dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch RSA* rsa_key = EVP_PKEY_get1_RSA(key->key()); 347dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch if (!rsa_key) 357dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch return false; 367dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch signature->resize(RSA_size(rsa_key)); 377dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 387dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch unsigned int len = 0; 397dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch bool success = RSA_sign(NID_sha1, data, data_len, vector_as_array(signature), 407dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch &len, rsa_key); 417dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch if (!success) { 427dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch signature->clear(); 437dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch return false; 447dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch } 457dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch signature->resize(len); 467dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch return true; 477dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch} 487dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)SignatureCreator::SignatureCreator() 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : sign_context_(EVP_MD_CTX_create()) { 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)SignatureCreator::~SignatureCreator() { 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EVP_MD_CTX_destroy(sign_context_); 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool SignatureCreator::Update(const uint8* data_part, int data_part_len) { 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OpenSSLErrStackTracer err_tracer(FROM_HERE); 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return EVP_SignUpdate(sign_context_, data_part, data_part_len) == 1; 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool SignatureCreator::Final(std::vector<uint8>* signature) { 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OpenSSLErrStackTracer err_tracer(FROM_HERE); 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EVP_PKEY* key = key_->key(); 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) signature->resize(EVP_PKEY_size(key)); 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unsigned int len = 0; 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int rv = EVP_SignFinal(sign_context_, vector_as_array(signature), &len, key); 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!rv) { 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) signature->clear(); 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) signature->resize(len); 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace crypto 78