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test_hash_drbg.c
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/**************************************************
* File name: test_hash_drbg.c
* Author: HAN Wei
* Author's blog: https://blog.csdn.net/henter/
* Date: Feb 10th, 2019
* Description: implement hash DRBG test functions
**************************************************/
#include <stdio.h>
#include <openssl/evp.h>
#include "hash_drbg_error_codes.h"
#include "hash_drbg.h"
#include "test_hash_drbg.h"
int test_sha256_hash_drbg_without_prediction_resistance(void)
{
int error_code;
unsigned char entropy[] = {0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6,
0x7, 0x8, 0x9, 0xA, 0xB, 0xC, 0xD, 0xE, 0xF, 0x10, 0x11, 0x12, 0x13,
0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E,
0x1F, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29,
0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0x34,
0x35, 0x36};
unsigned char nonce[] = {0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27};
unsigned char personal_str[] = {0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46,
0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52,
0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x5D, 0x5E,
0x5F, 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A,
0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76};
unsigned char additional_input[] = {0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66,
0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D,0x6E, 0x6F, 0x70, 0x71, 0x72,
0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7E,
0x7F, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A,
0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96};
unsigned char additional_input2[] = {0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6,
0xA7, 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF, 0xB0, 0xB1, 0xB2,
0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE,
0xBF, 0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA,
0xCB, 0xCC, 0xCD, 0xCE, 0xCF, 0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6};
unsigned int entropy_len, nonce_len, personal_str_len, additional_input_len, additional_input2_len;
unsigned char random_bytes[64];
unsigned int random_bytes_len;
const EVP_MD *md;
HASH_DRBG_CTX *drbg_ctx;
int i;
printf("\n****************************************************\n");
printf("First call to generate random bytes.\n");
entropy_len = sizeof(entropy);
nonce_len = sizeof(nonce);
personal_str_len = sizeof(personal_str);
additional_input_len = sizeof(additional_input);
additional_input2_len = sizeof(additional_input2);
random_bytes_len = sizeof(random_bytes);
md = EVP_sha256();
if ( !(drbg_ctx = hash_drbg_ctx_new()) )
{
return MEMOMY_ALLOCATION_FAIL;
}
if ( error_code = hash_drbg_instantiate(md,
entropy,
entropy_len,
nonce,
nonce_len,
personal_str,
personal_str_len,
drbg_ctx) )
{
hash_drbg_ctx_free(drbg_ctx);
return error_code;
}
if ( error_code = gen_rnd_bytes_with_hash_drbg(drbg_ctx,
random_bytes_len,
additional_input,
additional_input_len,
random_bytes) )
{
hash_drbg_ctx_free(drbg_ctx);
return error_code;
}
printf("Generated bytes:\n");
for (i = 0; i < (int)random_bytes_len; i++)
{
printf("0x%x ", random_bytes[i]);
}
printf("\n");
printf("\n****************************************************\n");
printf("Second call to generate random bytes.\n");
if ( error_code = gen_rnd_bytes_with_hash_drbg(drbg_ctx,
random_bytes_len,
additional_input2,
additional_input2_len,
random_bytes) )
{
hash_drbg_ctx_free(drbg_ctx);
return error_code;
}
printf("Generated bytes:\n");
for (i = 0; i < (int)random_bytes_len; i++)
{
printf("0x%x ", random_bytes[i]);
}
printf("\n");
hash_drbg_ctx_free(drbg_ctx);
return 0;
}
int test_sha256_hash_drbg_with_prediction_resistance(void)
{
int error_code;
unsigned char entropy[] = {0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6,
0x7, 0x8, 0x9, 0xA, 0xB, 0xC, 0xD, 0xE, 0xF, 0x10, 0x11, 0x12, 0x13,
0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E,
0x1F, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29,
0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0x34,
0x35, 0x36};
unsigned char entropy_1[] = {0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86,
0x87, 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 0x90, 0x91, 0x92,
0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0x9B, 0x9C, 0x9D, 0x9E,
0x9F, 0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0xAA,
0xAB, 0xAC, 0xAD, 0xAE, 0xAF, 0xB0, 0xB1, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6};
unsigned char entropy_2[] = {0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6,
0xC7, 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF, 0xD0, 0xD1, 0xD2,
0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE,
0xDF, 0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA,
0xEB, 0xEC, 0xED, 0xEE, 0xEF, 0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6};
unsigned char nonce[] = {0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27};
unsigned int entropy_len, entropy_1_len, entropy_2_len, nonce_len;
unsigned char random_bytes[64];
unsigned int random_bytes_len;
const EVP_MD *md;
HASH_DRBG_CTX *drbg_ctx;
int i;
printf("\n****************************************************\n");
printf("First call to generate random bytes.\n");
entropy_len = sizeof(entropy);
entropy_1_len = sizeof(entropy_1);
entropy_2_len = sizeof(entropy_2);
nonce_len = sizeof(nonce);
random_bytes_len = sizeof(random_bytes);
md = EVP_sha256();
if ( !(drbg_ctx = hash_drbg_ctx_new()) )
{
return MEMOMY_ALLOCATION_FAIL;
}
if ( error_code = hash_drbg_instantiate(md,
entropy,
entropy_len,
nonce,
nonce_len,
NULL,
0,
drbg_ctx) )
{
hash_drbg_ctx_free(drbg_ctx);
return error_code;
}
if ( error_code = reseed_hash_drbg(drbg_ctx,
entropy_1,
entropy_1_len,
NULL,
0) )
{
hash_drbg_ctx_free(drbg_ctx);
return error_code;
}
if ( error_code = gen_rnd_bytes_with_hash_drbg(drbg_ctx,
random_bytes_len,
NULL,
0,
random_bytes) )
{
hash_drbg_ctx_free(drbg_ctx);
return error_code;
}
printf("Generated bytes:\n");
for (i = 0; i < (int)random_bytes_len; i++)
{
printf("0x%x ", random_bytes[i]);
}
printf("\n");
printf("\n****************************************************\n");
printf("Second call to generate random bytes.\n");
if ( error_code = reseed_hash_drbg(drbg_ctx,
entropy_2,
entropy_2_len,
NULL,
0) )
{
hash_drbg_ctx_free(drbg_ctx);
return error_code;
}
if ( error_code = gen_rnd_bytes_with_hash_drbg(drbg_ctx,
random_bytes_len,
NULL,
0,
random_bytes) )
{
hash_drbg_ctx_free(drbg_ctx);
return error_code;
}
printf("Generated bytes:\n");
for (i = 0; i < (int)random_bytes_len; i++)
{
printf("0x%x ", random_bytes[i]);
}
printf("\n");
hash_drbg_ctx_free(drbg_ctx);
return 0;
}
int test_sha512_hash_drbg_without_prediction_resistance(void)
{
int error_code;
unsigned char entropy[] = {0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6,
0x7, 0x8, 0x9, 0xA, 0xB, 0xC, 0xD, 0xE, 0xF, 0x10, 0x11, 0x12, 0x13,
0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E,
0x1F, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29,
0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0x34,
0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F,
0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A,
0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53, 0x54, 0x55,
0x56, 0x57, 0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x5D, 0x5E, 0x5F, 0x60,
0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x6B,
0x6C, 0x6D, 0x6E};
unsigned char nonce[] = {0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F};
unsigned char additional_input_1[] = {0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66,
0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D,0x6E, 0x6F, 0x70, 0x71, 0x72,
0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7E,
0x7F, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A,
0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96,
0x97, 0x98, 0x99, 0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F, 0xA0, 0xA1, 0xA2,
0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE,
0xAF, 0xB0, 0xB1, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA,
0xBB, 0xBC, 0xBD, 0xBE, 0xBF, 0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6,
0xC7, 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE};
unsigned char additional_input_2[] = {0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6,
0xA7, 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF, 0xB0, 0xB1, 0xB2,
0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE,
0xBF, 0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA,
0xCB, 0xCC, 0xCD, 0xCE, 0xCF, 0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6,
0xD7, 0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF, 0xE0, 0xE1, 0xE2,
0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE,
0xEF, 0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA,
0xFB, 0xFC, 0xFD, 0xFE, 0xFF, 0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7,
0x8, 0x9, 0xA, 0xB, 0xC, 0xD, 0xE};
unsigned int entropy_len, nonce_len, additional_input_1_len, additional_input_2_len;
unsigned char random_bytes[128];
unsigned int random_bytes_len;
const EVP_MD *md;
HASH_DRBG_CTX *drbg_ctx;
int i;
printf("\n****************************************************\n");
printf("First call to generate random bytes.\n");
entropy_len = sizeof(entropy);
nonce_len = sizeof(nonce);
additional_input_1_len = sizeof(additional_input_1);
additional_input_2_len = sizeof(additional_input_2);
random_bytes_len = sizeof(random_bytes);
md = EVP_sha512();
if ( !(drbg_ctx = hash_drbg_ctx_new()) )
{
return MEMOMY_ALLOCATION_FAIL;
}
if ( error_code = hash_drbg_instantiate(md,
entropy,
entropy_len,
nonce,
nonce_len,
NULL,
0,
drbg_ctx) )
{
hash_drbg_ctx_free(drbg_ctx);
return error_code;
}
if ( error_code = gen_rnd_bytes_with_hash_drbg(drbg_ctx,
random_bytes_len,
additional_input_1,
additional_input_1_len,
random_bytes) )
{
hash_drbg_ctx_free(drbg_ctx);
return error_code;
}
printf("Generated bytes:\n");
for (i = 0; i < (int)random_bytes_len; i++)
{
printf("0x%x ", random_bytes[i]);
}
printf("\n");
printf("\n****************************************************\n");
printf("Second call to generate random bytes.\n");
if ( error_code = gen_rnd_bytes_with_hash_drbg(drbg_ctx,
random_bytes_len,
additional_input_2,
additional_input_2_len,
random_bytes) )
{
hash_drbg_ctx_free(drbg_ctx);
return error_code;
}
printf("Generated bytes:\n");
for (i = 0; i < (int)random_bytes_len; i++)
{
printf("0x%x ", random_bytes[i]);
}
printf("\n");
hash_drbg_ctx_free(drbg_ctx);
return 0;
}
int test_sha512_hash_drbg_with_prediction_resistance(void)
{
int error_code;
unsigned char entropy[] = {0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6,
0x7, 0x8, 0x9, 0xA, 0xB, 0xC, 0xD, 0xE, 0xF, 0x10, 0x11, 0x12, 0x13,
0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E,
0x1F, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29,
0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0x34,
0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F,
0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A,
0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53, 0x54, 0x55,
0x56, 0x57, 0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x5D, 0x5E, 0x5F, 0x60,
0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x6B,
0x6C, 0x6D, 0x6E};
unsigned char entropy_1[] = {0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86,
0x87, 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 0x90, 0x91, 0x92,
0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0x9B, 0x9C, 0x9D, 0x9E,
0x9F, 0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0xAA,
0xAB, 0xAC, 0xAD, 0xAE, 0xAF, 0xB0, 0xB1, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6,
0xB7, 0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE, 0xBF, 0xC0, 0xC1, 0xC2,
0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE,
0xCF, 0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA,
0xDB, 0xDC, 0xDD, 0xDE, 0xDF, 0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6,
0xE7, 0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE};
unsigned char entropy_2[] = {0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6,
0xC7, 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF, 0xD0, 0xD1, 0xD2,
0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE,
0xDF, 0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA,
0xEB, 0xEC, 0xED, 0xEE, 0xEF, 0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6,
0xF7, 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF, 0x0, 0x1, 0x2, 0x3,
0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA, 0xB, 0xC, 0xD, 0xE, 0xF, 0x10, 0x11,
0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D,
0x1E, 0x1F, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29,
0x2A, 0x2B, 0x2C, 0x2D, 0x2E};
unsigned char nonce[] = {0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F};
unsigned char personal_str[] = {0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46,
0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52,
0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x5D, 0x5E,
0x5F, 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A,
0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76,
0x77, 0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7E, 0x7F, 0x80, 0x81, 0x82,
0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E,
0x8F, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A,
0x9B, 0x9C, 0x9D, 0x9E, 0x9F, 0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6,
0xA7, 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE};
unsigned char additional_input_1[] = {0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66,
0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D,0x6E, 0x6F, 0x70, 0x71, 0x72,
0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7E,
0x7F, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A,
0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96,
0x97, 0x98, 0x99, 0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F, 0xA0, 0xA1, 0xA2,
0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE,
0xAF, 0xB0, 0xB1, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA,
0xBB, 0xBC, 0xBD, 0xBE, 0xBF, 0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6,
0xC7, 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE};
unsigned char additional_input_2[] = {0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6,
0xA7, 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF, 0xB0, 0xB1, 0xB2,
0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE,
0xBF, 0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA,
0xCB, 0xCC, 0xCD, 0xCE, 0xCF, 0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6,
0xD7, 0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF, 0xE0, 0xE1, 0xE2,
0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE,
0xEF, 0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA,
0xFB, 0xFC, 0xFD, 0xFE, 0xFF, 0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7,
0x8, 0x9, 0xA, 0xB, 0xC, 0xD, 0xE};
unsigned int entropy_len, entropy_1_len, entropy_2_len, nonce_len;
unsigned int personal_str_len, additional_input_1_len, additional_input_2_len;
unsigned char random_bytes[128];
unsigned int random_bytes_len;
const EVP_MD *md;
HASH_DRBG_CTX *drbg_ctx;
int i;
printf("\n****************************************************\n");
printf("First call to generate random bytes.\n");
entropy_len = sizeof(entropy);
entropy_1_len = sizeof(entropy_1);
entropy_2_len = sizeof(entropy_2);
nonce_len = sizeof(nonce);
personal_str_len = sizeof(personal_str);
additional_input_1_len = sizeof(additional_input_1);
additional_input_2_len = sizeof(additional_input_2);
random_bytes_len = sizeof(random_bytes);
md = EVP_sha512();
if ( !(drbg_ctx = hash_drbg_ctx_new()) )
{
return MEMOMY_ALLOCATION_FAIL;
}
if ( error_code = hash_drbg_instantiate(md,
entropy,
entropy_len,
nonce,
nonce_len,
personal_str,
personal_str_len,
drbg_ctx) )
{
hash_drbg_ctx_free(drbg_ctx);
return error_code;
}
if ( error_code = reseed_hash_drbg(drbg_ctx,
entropy_1,
entropy_1_len,
additional_input_1,
additional_input_1_len) )
{
hash_drbg_ctx_free(drbg_ctx);
return error_code;
}
if ( error_code = gen_rnd_bytes_with_hash_drbg(drbg_ctx,
random_bytes_len,
NULL,
0,
random_bytes) )
{
hash_drbg_ctx_free(drbg_ctx);
return error_code;
}
printf("Generated bytes:\n");
for (i = 0; i < (int)random_bytes_len; i++)
{
printf("0x%x ", random_bytes[i]);
}
printf("\n");
printf("\n****************************************************\n");
printf("Second call to generate random bytes.\n");
if ( error_code = reseed_hash_drbg(drbg_ctx,
entropy_2,
entropy_2_len,
additional_input_2,
additional_input_2_len) )
{
hash_drbg_ctx_free(drbg_ctx);
return error_code;
}
if ( error_code = gen_rnd_bytes_with_hash_drbg(drbg_ctx,
random_bytes_len,
NULL,
0,
random_bytes) )
{
hash_drbg_ctx_free(drbg_ctx);
return error_code;
}
printf("Generated bytes:\n");
for (i = 0; i < (int)random_bytes_len; i++)
{
printf("0x%x ", random_bytes[i]);
}
printf("\n");
hash_drbg_ctx_free(drbg_ctx);
return 0;
}