|  | // Copyright 2016 Google Inc. | 
|  | // | 
|  | // Licensed under the Apache License, Version 2.0 (the "License"); | 
|  | // you may not use this file except in compliance with the License. | 
|  | // You may obtain a copy of the License at | 
|  | // | 
|  | //     http://www.apache.org/licenses/LICENSE-2.0 | 
|  | // | 
|  | // Unless required by applicable law or agreed to in writing, software | 
|  | // distributed under the License is distributed on an "AS IS" BASIS, | 
|  | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | 
|  | // See the License for the specific language governing permissions and | 
|  | // limitations under the License. | 
|  | #ifndef SECURITY_UTIL_LITE_SHA_H_ | 
|  | #define SECURITY_UTIL_LITE_SHA_H_ | 
|  |  | 
|  | #include <stdint.h> | 
|  |  | 
|  | #include "hash-internal.h" | 
|  |  | 
|  | #ifdef __cplusplus | 
|  | extern "C" { | 
|  | #endif  // __cplusplus | 
|  |  | 
|  | typedef HASH_CTX SHA_CTX; | 
|  |  | 
|  | void SHA_init(SHA_CTX *ctx); | 
|  | void SHA_update(SHA_CTX *ctx, const void *data, size_t len); | 
|  | const uint8_t *SHA_final(SHA_CTX *ctx); | 
|  |  | 
|  | // Convenience method. Returns digest address. | 
|  | // NOTE: *digest needs to hold SHA_DIGEST_SIZE bytes. | 
|  | const uint8_t *SHA_hash(const void *data, size_t len, uint8_t *digest); | 
|  |  | 
|  | #ifndef SHA_DIGEST_SIZE | 
|  | #define SHA_DIGEST_SIZE 20 | 
|  | #endif | 
|  |  | 
|  | #ifdef __cplusplus | 
|  | } | 
|  | #endif  // __cplusplus | 
|  |  | 
|  | #endif  // SECURITY_UTIL_LITE_SHA_H_ |