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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 | } |