| 1 | /********************************************************************* |
| 2 | * Filename: sha256.c |
| 3 | * Author: Brad Conte (brad AT bradconte.com) |
| 4 | * Copyright: |
| 5 | * Disclaimer: This code is presented "as is" without any guarantees. |
| 6 | * Details: Performs known-answer tests on the corresponding SHA1 |
| 7 | implementation. These tests do not encompass the full |
| 8 | range of available test vectors, however, if the tests |
| 9 | pass it is very, very likely that the code is correct |
| 10 | and was compiled properly. This code also serves as |
| 11 | example usage of the functions. |
| 12 | *********************************************************************/ |
| 13 | |
| 14 | /*************************** HEADER FILES ***************************/ |
| 15 | #include <stdio.h> |
| 16 | #include <memory.h> |
| 17 | #include <string.h> |
| 18 | #include "sha256.h" |
| 19 | |
| 20 | /*********************** FUNCTION DEFINITIONS ***********************/ |
| 21 | int sha256_test() |
| 22 | { |
| 23 | BYTE text1[] = {"abc"}; |
| 24 | BYTE text2[] = {"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"}; |
| 25 | BYTE text3[] = {"aaaaaaaaaa"}; |
| 26 | BYTE hash1[SHA256_BLOCK_SIZE] = {0xba,0x78,0x16,0xbf,0x8f,0x01,0xcf,0xea,0x41,0x41,0x40,0xde,0x5d,0xae,0x22,0x23, |
| 27 | 0xb0,0x03,0x61,0xa3,0x96,0x17,0x7a,0x9c,0xb4,0x10,0xff,0x61,0xf2,0x00,0x15,0xad}; |
| 28 | BYTE hash2[SHA256_BLOCK_SIZE] = {0x24,0x8d,0x6a,0x61,0xd2,0x06,0x38,0xb8,0xe5,0xc0,0x26,0x93,0x0c,0x3e,0x60,0x39, |
| 29 | 0xa3,0x3c,0xe4,0x59,0x64,0xff,0x21,0x67,0xf6,0xec,0xed,0xd4,0x19,0xdb,0x06,0xc1}; |
| 30 | BYTE hash3[SHA256_BLOCK_SIZE] = {0xcd,0xc7,0x6e,0x5c,0x99,0x14,0xfb,0x92,0x81,0xa1,0xc7,0xe2,0x84,0xd7,0x3e,0x67, |
| 31 | 0xf1,0x80,0x9a,0x48,0xa4,0x97,0x20,0x0e,0x04,0x6d,0x39,0xcc,0xc7,0x11,0x2c,0xd0}; |
| 32 | BYTE buf[SHA256_BLOCK_SIZE]; |
| 33 | SHA256_CTX ctx; |
| 34 | int idx; |
| 35 | int pass = 1; |
| 36 | |
| 37 | sha256_init(&ctx); |
| 38 | sha256_update(&ctx, text1, strlen(text1)); |
| 39 | sha256_final(&ctx, buf); |
| 40 | pass = pass && !memcmp(hash1, buf, SHA256_BLOCK_SIZE); |
| 41 | |
| 42 | sha256_init(&ctx); |
| 43 | sha256_update(&ctx, text2, strlen(text2)); |
| 44 | sha256_final(&ctx, buf); |
| 45 | pass = pass && !memcmp(hash2, buf, SHA256_BLOCK_SIZE); |
| 46 | |
| 47 | sha256_init(&ctx); |
| 48 | for (idx = 0; idx < 100000; ++idx) |
| 49 | sha256_update(&ctx, text3, strlen(text3)); |
| 50 | sha256_final(&ctx, buf); |
| 51 | pass = pass && !memcmp(hash3, buf, SHA256_BLOCK_SIZE); |
| 52 | |
| 53 | return(pass); |
| 54 | } |
| 55 | |
| 56 | int main() |
| 57 | { |
| 58 | printf("SHA-256 tests: %s\n", sha256_test() ? "SUCCEEDED" : "FAILED"); |
| 59 | |
| 60 | return(0); |
| 61 | } |