Line data    Source code

       1             : /**
       2             :  * The MIT License (MIT)
       3             :  *
       4             :  * Copyright (c) 2021 RSK Labs Ltd
       5             :  *
       6             :  * Permission is hereby granted, free of charge, to any person obtaining a copy
       7             :  * of this software and associated documentation files (the "Software"), to
       8             :  * deal in the Software without restriction, including without limitation the
       9             :  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
      10             :  * sell copies of the Software, and to permit persons to whom the Software is
      11             :  * furnished to do so, subject to the following conditions:
      12             :  *
      13             :  * The above copyright notice and this permission notice shall be included in
      14             :  * all copies or substantial portions of the Software.
      15             :  *
      16             :  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
      17             :  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
      18             :  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
      19             :  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
      20             :  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
      21             :  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
      22             :  * IN THE SOFTWARE.
      23             :  */
      24             : 
      25             : #include "hal/log.h"
      26             : #include "hal/hash.h"
      27             : 
      28             : // *** sha256 ***
      29           2 : bool hash_sha256_init(hash_sha256_ctx_t* ctx) {
      30           2 :     mbedtls_sha256_init(ctx);
      31           2 :     if (mbedtls_sha256_starts_ret(ctx, 0) != 0) {
      32             :         LOG("Error initializing SHA256 context\n");
      33           1 :         mbedtls_sha256_free(ctx);
      34           1 :         return false;
      35             :     }
      36           1 :     return true;
      37             : }
      38             : 
      39           2 : bool hash_sha256_update(hash_sha256_ctx_t* ctx,
      40             :                         const uint8_t* data,
      41             :                         size_t len) {
      42           2 :     if (mbedtls_sha256_update_ret(ctx, data, len) != 0) {
      43             :         LOG("Error updating SHA256 context\n");
      44           1 :         mbedtls_sha256_free(ctx);
      45           1 :         return false;
      46             :     }
      47           1 :     return true;
      48             : }
      49             : 
      50           2 : bool hash_sha256_final(hash_sha256_ctx_t* ctx, uint8_t* out_hash) {
      51           2 :     if (mbedtls_sha256_finish_ret(ctx, out_hash) != 0) {
      52             :         LOG("Error finishing SHA256 computation\n");
      53           1 :         mbedtls_sha256_free(ctx);
      54           1 :         return false;
      55             :     }
      56           1 :     mbedtls_sha256_free(ctx);
      57           1 :     return true;
      58             : }
      59             : 
      60             : // *** sha256 with midstate support ***
      61           1 : bool hash_sha256_ms_init(hash_sha256_ms_ctx_t* ctx) {
      62           1 :     sha256_init(ctx);
      63           1 :     return true;
      64             : }
      65             : 
      66           1 : bool hash_sha256_ms_midstate(hash_sha256_ms_ctx_t* ctx, uint8_t* midstate) {
      67           1 :     sha256_midstate(ctx, midstate);
      68           1 :     return true;
      69             : }
      70             : 
      71           1 : bool hash_sha256_ms_update(hash_sha256_ms_ctx_t* ctx,
      72             :                            const uint8_t* data,
      73             :                            size_t len) {
      74           1 :     sha256_update(ctx, data, len);
      75           1 :     return true;
      76             : }
      77             : 
      78           1 : bool hash_sha256_ms_final(hash_sha256_ms_ctx_t* ctx, uint8_t* out_hash) {
      79           1 :     sha256_final(ctx, out_hash);
      80           1 :     return true;
      81             : }
      82             : 
      83             : // *** keccak256 ***
      84          18 : bool hash_keccak256_init(hash_keccak256_ctx_t* ctx) {
      85          18 :     keccak_init(ctx);
      86          18 :     return true;
      87             : }
      88             : 
      89        1157 : bool hash_keccak256_update(hash_keccak256_ctx_t* ctx,
      90             :                            const uint8_t* data,
      91             :                            size_t len) {
      92        1157 :     keccak_update(ctx, data, len);
      93        1157 :     return true;
      94             : }
      95             : 
      96          18 : bool hash_keccak256_final(hash_keccak256_ctx_t* ctx, uint8_t* out_hash) {
      97          18 :     keccak_final(ctx, out_hash);
      98          18 :     return true;
      99             : }