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| 1 // Copyright (c) 2011 The Chromium 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 #ifndef CRYPTO_SIGNATURE_CREATOR_H_ |
| 6 #define CRYPTO_SIGNATURE_CREATOR_H_ |
| 7 #pragma once |
| 8 |
| 9 #include "build/build_config.h" |
| 10 |
| 11 #if defined(USE_OPENSSL) |
| 12 // Forward declaration for openssl/*.h |
| 13 typedef struct env_md_ctx_st EVP_MD_CTX; |
| 14 #elif defined(USE_NSS) |
| 15 // Forward declaration. |
| 16 struct SGNContextStr; |
| 17 #elif defined(OS_MACOSX) |
| 18 #include <Security/cssm.h> |
| 19 #endif |
| 20 |
| 21 #include <vector> |
| 22 |
| 23 #include "base/basictypes.h" |
| 24 #include "crypto/rsa_private_key.h" |
| 25 |
| 26 #if defined(OS_WIN) |
| 27 #include "crypto/scoped_capi_types.h" |
| 28 #endif |
| 29 |
| 30 namespace crypto { |
| 31 |
| 32 // Signs data using a bare private key (as opposed to a full certificate). |
| 33 // Currently can only sign data using SHA-1 with RSA encryption. |
| 34 class SignatureCreator { |
| 35 public: |
| 36 ~SignatureCreator(); |
| 37 |
| 38 // Create an instance. The caller must ensure that the provided PrivateKey |
| 39 // instance outlives the created SignatureCreator. |
| 40 static SignatureCreator* Create(RSAPrivateKey* key); |
| 41 |
| 42 // Update the signature with more data. |
| 43 bool Update(const uint8* data_part, int data_part_len); |
| 44 |
| 45 // Finalize the signature. |
| 46 bool Final(std::vector<uint8>* signature); |
| 47 |
| 48 private: |
| 49 // Private constructor. Use the Create() method instead. |
| 50 SignatureCreator(); |
| 51 |
| 52 RSAPrivateKey* key_; |
| 53 |
| 54 #if defined(USE_OPENSSL) |
| 55 EVP_MD_CTX* sign_context_; |
| 56 #elif defined(USE_NSS) |
| 57 SGNContextStr* sign_context_; |
| 58 #elif defined(OS_MACOSX) |
| 59 CSSM_CC_HANDLE sig_handle_; |
| 60 #elif defined(OS_WIN) |
| 61 ScopedHCRYPTHASH hash_object_; |
| 62 #endif |
| 63 |
| 64 DISALLOW_COPY_AND_ASSIGN(SignatureCreator); |
| 65 }; |
| 66 |
| 67 } // namespace crypto |
| 68 |
| 69 #endif // CRYPTO_SIGNATURE_CREATOR_H_ |
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