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/*
* Copyright (C) 2018 vt@altlinux.org. All Rights Reserved.
*
* Contents licensed under the terms of the OpenSSL license
* See https://www.openssl.org/source/license.html for details
*/
#include "gost_grasshopper_cipher.h"
#include "gost_grasshopper_defines.h"
#include "gost_grasshopper_math.h"
#include "gost_grasshopper_core.h"
#include "e_gost_err.h"
#include "gost_lcl.h"
#include <openssl/evp.h>
#include <openssl/rand.h>
#include <openssl/err.h>
#include <openssl/asn1.h>
#include <string.h>
#define T(e) if (!(e)) {\
ERR_print_errors_fp(stderr);\
OpenSSLDie(__FILE__, __LINE__, #e);\
}
#define cRED "\033[1;31m"
#define cDRED "\033[0;31m"
#define cGREEN "\033[1;32m"
#define cDGREEN "\033[0;32m"
#define cBLUE "\033[1;34m"
#define cDBLUE "\033[0;34m"
#define cNORM "\033[m"
#define TEST_ASSERT(e) {if ((test = (e))) \
printf(cRED " Test FAILED\n" cNORM); \
else \
printf(cGREEN " Test passed\n" cNORM);}
static void hexdump(const void *ptr, size_t len)
{
const unsigned char *p = ptr;
size_t i, j;
for (i = 0; i < len; i += j) {
for (j = 0; j < 16 && i + j < len; j++)
printf("%s%02x", j? "" : " ", p[i + j]);
}
printf("\n");
}
#define TEST_SIZE 256
#define STEP_SIZE 16
static int test_contexts(const EVP_CIPHER *type, const int enc, const char *msg,
int acpkm)
{
EVP_CIPHER_CTX *ctx, *save;
unsigned char pt[TEST_SIZE] = {1};
unsigned char b[TEST_SIZE];
unsigned char c[TEST_SIZE];
unsigned char K[32] = {1};
unsigned char iv[16] = {1};
int outlen, tmplen;
int ret = 0, test = 0;
printf(cBLUE "%s test for %s\n" cNORM, enc ? "Encryption" : "Decryption", msg);
/* produce base encryption */
ctx = EVP_CIPHER_CTX_new();
T(ctx);
T(EVP_CipherInit_ex(ctx, type, NULL, K, iv, enc));
if (acpkm)
T(EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_KEY_MESH, acpkm, NULL));
T(EVP_CIPHER_CTX_set_padding(ctx, 0));
T(EVP_CipherUpdate(ctx, b, &outlen, pt, sizeof(b)));
T(EVP_CipherFinal_ex(ctx, b + outlen, &tmplen));
/* and now tests */
printf(" cloned contexts\n");
EVP_CIPHER_CTX_reset(ctx);
EVP_CIPHER_CTX_reset(ctx); /* double call is intentional */
T(EVP_CipherInit_ex(ctx, type, NULL, K, iv, enc));
T(EVP_CIPHER_CTX_set_padding(ctx, 0));
if (acpkm)
T(EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_KEY_MESH, acpkm, NULL));
save = ctx;
int i;
memset(c, 0, sizeof(c));
for (i = 0; i < TEST_SIZE / STEP_SIZE; i++) {
EVP_CIPHER_CTX *copy = EVP_CIPHER_CTX_new();
T(copy);
T(EVP_CIPHER_CTX_copy(copy, ctx));
if (save != ctx) /* else original context */
EVP_CIPHER_CTX_free(ctx);
ctx = copy;
T(EVP_CipherUpdate(ctx, c + STEP_SIZE * i, &outlen,
pt + STEP_SIZE * i, STEP_SIZE));
}
outlen = i * GRASSHOPPER_BLOCK_SIZE;
T(EVP_CipherFinal_ex(ctx, c + outlen, &tmplen));
TEST_ASSERT(outlen != TEST_SIZE || memcmp(c, b, TEST_SIZE));
EVP_CIPHER_CTX_free(ctx);
if (test) {
printf(" b[%d] = ", outlen);
hexdump(b, outlen);
printf(" c[%d] = ", outlen);
hexdump(c, outlen);
}
ret |= test;
/* resume original context */
printf(" base context\n");
memset(c, 0, sizeof(c));
T(EVP_CipherUpdate(save, c, &outlen, pt, sizeof(c)));
T(EVP_CipherFinal_ex(save, c + outlen, &tmplen));
TEST_ASSERT(outlen != TEST_SIZE || memcmp(c, b, TEST_SIZE));
EVP_CIPHER_CTX_cleanup(save); /* multiple calls are intentional */
EVP_CIPHER_CTX_cleanup(save);
EVP_CIPHER_CTX_free(save);
if (test) {
printf(" b[%d] = ", outlen);
hexdump(b, outlen);
printf(" c[%d] = ", outlen);
hexdump(c, outlen);
}
ret |= test;
return ret;
}
int main(int argc, char **argv)
{
int ret = 0;
ret |= test_contexts(cipher_gost_grasshopper_ecb(), 1, "grasshopper ecb", 0);
ret |= test_contexts(cipher_gost_grasshopper_ecb(), 0, "grasshopper ecb", 0);
ret |= test_contexts(cipher_gost_grasshopper_cbc(), 1, "grasshopper cbc", 0);
ret |= test_contexts(cipher_gost_grasshopper_cbc(), 0, "grasshopper cbc", 0);
ret |= test_contexts(cipher_gost_grasshopper_ctr(), 1, "grasshopper ctr", 0);
ret |= test_contexts(cipher_gost_grasshopper_ctr(), 0, "grasshopper ctr", 0);
ret |= test_contexts(cipher_gost_grasshopper_ofb(), 1, "grasshopper ofb", 0);
ret |= test_contexts(cipher_gost_grasshopper_ofb(), 0, "grasshopper ofb", 0);
ret |= test_contexts(cipher_gost_grasshopper_ctracpkm(), 1, "grasshopper ctracpkm", 256 / 8);
ret |= test_contexts(cipher_gost_grasshopper_ctracpkm(), 0, "grasshopper ctracpkm", 256 / 8);
if (ret)
printf(cDRED "= Some tests FAILED!\n" cNORM);
else
printf(cDGREEN "= All tests passed!\n" cNORM);
return ret;
}
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