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/*********************************************************************
* Filename: sha256.c
* Author: Brad Conte (brad AT bradconte.com)
* Copyright:
* Disclaimer: This code is presented "as is" without any guarantees.
* Details: Performs known-answer tests on the corresponding SHA1
implementation. These tests do not encompass the full
range of available test vectors, however, if the tests
pass it is very, very likely that the code is correct
and was compiled properly. This code also serves as
example usage of the functions.
*********************************************************************/
/*************************** HEADER FILES ***************************/
#include <stdio.h>
#include <memory.h>
#include <string.h>
#include "sha256.h"
/*********************** FUNCTION DEFINITIONS ***********************/
int sha256_test()
{
BYTE text1[] = {"abc"};
BYTE text2[] = {"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"};
BYTE text3[] = {"aaaaaaaaaa"};
BYTE hash1[SHA256_BLOCK_SIZE] = {0xba,0x78,0x16,0xbf,0x8f,0x01,0xcf,0xea,0x41,0x41,0x40,0xde,0x5d,0xae,0x22,0x23,
0xb0,0x03,0x61,0xa3,0x96,0x17,0x7a,0x9c,0xb4,0x10,0xff,0x61,0xf2,0x00,0x15,0xad};
BYTE hash2[SHA256_BLOCK_SIZE] = {0x24,0x8d,0x6a,0x61,0xd2,0x06,0x38,0xb8,0xe5,0xc0,0x26,0x93,0x0c,0x3e,0x60,0x39,
0xa3,0x3c,0xe4,0x59,0x64,0xff,0x21,0x67,0xf6,0xec,0xed,0xd4,0x19,0xdb,0x06,0xc1};
BYTE hash3[SHA256_BLOCK_SIZE] = {0xcd,0xc7,0x6e,0x5c,0x99,0x14,0xfb,0x92,0x81,0xa1,0xc7,0xe2,0x84,0xd7,0x3e,0x67,
0xf1,0x80,0x9a,0x48,0xa4,0x97,0x20,0x0e,0x04,0x6d,0x39,0xcc,0xc7,0x11,0x2c,0xd0};
BYTE buf[SHA256_BLOCK_SIZE];
SHA256_CTX ctx;
int idx;
int pass = 1;
sha256_init(&ctx);
sha256_update(&ctx, text1, strlen(text1));
sha256_final(&ctx, buf);
pass = pass && !memcmp(hash1, buf, SHA256_BLOCK_SIZE);
sha256_init(&ctx);
sha256_update(&ctx, text2, strlen(text2));
sha256_final(&ctx, buf);
pass = pass && !memcmp(hash2, buf, SHA256_BLOCK_SIZE);
sha256_init(&ctx);
for (idx = 0; idx < 100000; ++idx)
sha256_update(&ctx, text3, strlen(text3));
sha256_final(&ctx, buf);
pass = pass && !memcmp(hash3, buf, SHA256_BLOCK_SIZE);
return(pass);
}
int main()
{
printf("SHA-256 tests: %s\n", sha256_test() ? "SUCCEEDED" : "FAILEd");
return(0);
}
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