Shawn Willden | 0a4df7e | 2014-08-28 16:09:05 -0600 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2014 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #ifndef SYSTEM_KEYMASTER_ECDSA_OPERATION_H_ |
| 18 | #define SYSTEM_KEYMASTER_ECDSA_OPERATION_H_ |
| 19 | |
| 20 | #include <openssl/ec.h> |
Shawn Willden | efbd7e4 | 2015-06-01 07:07:33 -0600 | [diff] [blame] | 21 | #include <openssl/evp.h> |
Shawn Willden | 0a4df7e | 2014-08-28 16:09:05 -0600 | [diff] [blame] | 22 | |
| 23 | #include <UniquePtr.h> |
| 24 | |
Shawn Willden | 0a4df7e | 2014-08-28 16:09:05 -0600 | [diff] [blame] | 25 | #include "operation.h" |
| 26 | |
| 27 | namespace keymaster { |
| 28 | |
| 29 | class EcdsaOperation : public Operation { |
| 30 | public: |
Shawn Willden | efbd7e4 | 2015-06-01 07:07:33 -0600 | [diff] [blame] | 31 | EcdsaOperation(keymaster_purpose_t purpose, keymaster_digest_t digest, EVP_PKEY* key) |
| 32 | : Operation(purpose), digest_(digest), ecdsa_key_(key) { |
| 33 | EVP_MD_CTX_init(&digest_ctx_); |
| 34 | } |
Shawn Willden | 0a4df7e | 2014-08-28 16:09:05 -0600 | [diff] [blame] | 35 | ~EcdsaOperation(); |
| 36 | |
Shawn Willden | efbd7e4 | 2015-06-01 07:07:33 -0600 | [diff] [blame] | 37 | keymaster_error_t Abort() override { return KM_ERROR_OK; } |
Shawn Willden | 0a4df7e | 2014-08-28 16:09:05 -0600 | [diff] [blame] | 38 | |
| 39 | protected: |
Shawn Willden | b736113 | 2014-12-08 08:15:14 -0700 | [diff] [blame] | 40 | keymaster_error_t StoreData(const Buffer& input, size_t* input_consumed); |
Shawn Willden | efbd7e4 | 2015-06-01 07:07:33 -0600 | [diff] [blame] | 41 | keymaster_error_t InitDigest(); |
Shawn Willden | 0a4df7e | 2014-08-28 16:09:05 -0600 | [diff] [blame] | 42 | |
Shawn Willden | 84b8da5 | 2015-03-11 07:21:32 -0600 | [diff] [blame] | 43 | keymaster_digest_t digest_; |
Shawn Willden | efbd7e4 | 2015-06-01 07:07:33 -0600 | [diff] [blame] | 44 | const EVP_MD* digest_algorithm_; |
| 45 | EVP_PKEY* ecdsa_key_; |
| 46 | EVP_MD_CTX digest_ctx_; |
Shawn Willden | 0a4df7e | 2014-08-28 16:09:05 -0600 | [diff] [blame] | 47 | Buffer data_; |
| 48 | }; |
| 49 | |
| 50 | class EcdsaSignOperation : public EcdsaOperation { |
| 51 | public: |
Shawn Willden | 2612fb5 | 2015-07-27 16:58:30 -0600 | [diff] [blame] | 52 | EcdsaSignOperation(keymaster_digest_t digest, EVP_PKEY* key) |
| 53 | : EcdsaOperation(KM_PURPOSE_SIGN, digest, key) {} |
Shawn Willden | efbd7e4 | 2015-06-01 07:07:33 -0600 | [diff] [blame] | 54 | keymaster_error_t Begin(const AuthorizationSet& input_params, |
| 55 | AuthorizationSet* output_params) override; |
| 56 | keymaster_error_t Update(const AuthorizationSet& additional_params, const Buffer& input, |
Shawn Willden | ded8e7d | 2015-06-01 15:29:12 -0600 | [diff] [blame] | 57 | AuthorizationSet* output_params, Buffer* output, |
| 58 | size_t* input_consumed) override; |
Shawn Willden | efbd7e4 | 2015-06-01 07:07:33 -0600 | [diff] [blame] | 59 | keymaster_error_t Finish(const AuthorizationSet& additional_params, const Buffer& signature, |
Shawn Willden | ded8e7d | 2015-06-01 15:29:12 -0600 | [diff] [blame] | 60 | AuthorizationSet* output_params, Buffer* output) override; |
Shawn Willden | 0a4df7e | 2014-08-28 16:09:05 -0600 | [diff] [blame] | 61 | }; |
| 62 | |
| 63 | class EcdsaVerifyOperation : public EcdsaOperation { |
| 64 | public: |
Shawn Willden | 2612fb5 | 2015-07-27 16:58:30 -0600 | [diff] [blame] | 65 | EcdsaVerifyOperation(keymaster_digest_t digest, EVP_PKEY* key) |
| 66 | : EcdsaOperation(KM_PURPOSE_VERIFY, digest, key) {} |
Shawn Willden | efbd7e4 | 2015-06-01 07:07:33 -0600 | [diff] [blame] | 67 | keymaster_error_t Begin(const AuthorizationSet& input_params, |
| 68 | AuthorizationSet* output_params) override; |
| 69 | keymaster_error_t Update(const AuthorizationSet& additional_params, const Buffer& input, |
Shawn Willden | ded8e7d | 2015-06-01 15:29:12 -0600 | [diff] [blame] | 70 | AuthorizationSet* output_params, Buffer* output, |
| 71 | size_t* input_consumed) override; |
Shawn Willden | efbd7e4 | 2015-06-01 07:07:33 -0600 | [diff] [blame] | 72 | keymaster_error_t Finish(const AuthorizationSet& additional_params, const Buffer& signature, |
Shawn Willden | ded8e7d | 2015-06-01 15:29:12 -0600 | [diff] [blame] | 73 | AuthorizationSet* output_params, Buffer* output) override; |
Shawn Willden | 0a4df7e | 2014-08-28 16:09:05 -0600 | [diff] [blame] | 74 | }; |
| 75 | |
Shawn Willden | 0629810 | 2015-05-25 23:12:48 -0600 | [diff] [blame] | 76 | class EcdsaOperationFactory : public OperationFactory { |
| 77 | private: |
| 78 | KeyType registry_key() const override { return KeyType(KM_ALGORITHM_EC, purpose()); } |
| 79 | Operation* CreateOperation(const Key& key, const AuthorizationSet& begin_params, |
| 80 | keymaster_error_t* error) override; |
| 81 | const keymaster_digest_t* SupportedDigests(size_t* digest_count) const override; |
| 82 | |
| 83 | virtual keymaster_purpose_t purpose() const = 0; |
Shawn Willden | efbd7e4 | 2015-06-01 07:07:33 -0600 | [diff] [blame] | 84 | virtual Operation* InstantiateOperation(keymaster_digest_t digest, EVP_PKEY* key) = 0; |
Shawn Willden | 0629810 | 2015-05-25 23:12:48 -0600 | [diff] [blame] | 85 | }; |
| 86 | |
| 87 | class EcdsaSignOperationFactory : public EcdsaOperationFactory { |
| 88 | private: |
| 89 | keymaster_purpose_t purpose() const override { return KM_PURPOSE_SIGN; } |
Shawn Willden | efbd7e4 | 2015-06-01 07:07:33 -0600 | [diff] [blame] | 90 | Operation* InstantiateOperation(keymaster_digest_t digest, EVP_PKEY* key) { |
Shawn Willden | 2612fb5 | 2015-07-27 16:58:30 -0600 | [diff] [blame] | 91 | return new (std::nothrow) EcdsaSignOperation(digest, key); |
Shawn Willden | 0629810 | 2015-05-25 23:12:48 -0600 | [diff] [blame] | 92 | } |
| 93 | }; |
| 94 | |
| 95 | class EcdsaVerifyOperationFactory : public EcdsaOperationFactory { |
| 96 | public: |
| 97 | keymaster_purpose_t purpose() const override { return KM_PURPOSE_VERIFY; } |
Shawn Willden | efbd7e4 | 2015-06-01 07:07:33 -0600 | [diff] [blame] | 98 | Operation* InstantiateOperation(keymaster_digest_t digest, EVP_PKEY* key) { |
Shawn Willden | 2612fb5 | 2015-07-27 16:58:30 -0600 | [diff] [blame] | 99 | return new (std::nothrow) EcdsaVerifyOperation(digest, key); |
Shawn Willden | 0629810 | 2015-05-25 23:12:48 -0600 | [diff] [blame] | 100 | } |
| 101 | }; |
| 102 | |
Shawn Willden | 0a4df7e | 2014-08-28 16:09:05 -0600 | [diff] [blame] | 103 | } // namespace keymaster |
| 104 | |
| 105 | #endif // SYSTEM_KEYMASTER_ECDSA_OPERATION_H_ |