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test.c
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test.c
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <openssl/sha.h>
#include <openssl/aes.h>
#include <sys/time.h>
#include "aes.h"
#include "util.h"
#define KEY "hello world!"
#define BITS 256
void print_elapsed_time(struct timeval *tv_start, struct timeval *tv_end)
{
long sec, usec;
sec = tv_end->tv_sec - tv_start->tv_sec;
usec = tv_end->tv_usec - tv_start->tv_usec;
usec += sec * 1000000;
printf("[*]: %ld\n", usec);
}
int main()
{
SHA256_CTX md_ctx;
AES_KEY key;
_AES_CTX ctx;
uint8_t buf[64], nb[32], enb[32];
int i, len;
int nk = BITS >> 5, nr = 6 + nk, key_nb = (nr + 1) * AES_NB * 4;
FILE *fp, *ofp;
struct timeval tv_start, tv_end;
for (len = 0; len < 64; len += 32) {
SHA256_Init(&md_ctx);
if (len == 0) {
SHA256_Update(&md_ctx, KEY, strlen(KEY));
SHA256_Final(buf, &md_ctx);
} else {
SHA256_Update(&md_ctx, buf + len - 32, 32);
SHA256_Update(&md_ctx, KEY, strlen(KEY));
SHA256_Final(buf + len, &md_ctx);
}
}
AES_set_encrypt_key(buf, BITS, &key);
hex_dump((uint8_t *)key.rd_key, key_nb);
expand_key(&(ctx.key), buf, BITS);
ctx.encrypt = _AES_ecb_encrypt;
ctx.decrypt = _AES_ecb_decrypt;
hex_dump(ctx.key.rd_key, key_nb);
for (i = 0; i < 32; i++)
nb[i] = '\0';
gettimeofday(&tv_start, NULL);
for (i = 0; i < 1024; i++)
AES_encrypt(nb, enb, &key);
gettimeofday(&tv_end, NULL);
print_elapsed_time(&tv_start, &tv_end);
hex_dump(enb, 16);
gettimeofday(&tv_start, NULL);
for (i = 0; i < 1024; i++)
ctx.encrypt(nb, enb, &ctx);
gettimeofday(&tv_end, NULL);
print_elapsed_time(&tv_start, &tv_end);
hex_dump(enb, 16);
for (i = 0; i < 32; i++)
nb[i] = enb[i];
ctx.decrypt(nb, enb, &ctx);
hex_dump(enb, 16);
if ((fp = fopen("test.bin", "r")) == NULL) {
fprintf(stderr, "File open failed\n");
exit(-1);
}
while (!feof(fp)) {
if (fread(nb, 1, _AES_BLOCK_SIZE, fp) == 0) {
fprintf(stderr, "Failed in call to fread()\n");
exit(-1);
}
}
fseek(fp, 0, SEEK_SET);
i = 0;
gettimeofday(&tv_start, NULL);
while (!feof(fp)) {
++i;
if (fread(nb, 1, _AES_BLOCK_SIZE, fp) == 0) {
fprintf(stderr, "Failed in call to fread()\n");
exit(-1);
}
AES_encrypt(nb, enb, &key);
}
gettimeofday(&tv_end, NULL);
print_elapsed_time(&tv_start, &tv_end);
printf("blocks = %d\n", i);
fseek(fp, 0, SEEK_SET);
i = 0;
gettimeofday(&tv_start, NULL);
while (!feof(fp)) {
++i;
if (fread(nb, 1, _AES_BLOCK_SIZE, fp) == 0) {
fprintf(stderr, "Failed in call to fread()\n");
exit(-1);
}
ctx.encrypt(nb, enb, &ctx);
}
gettimeofday(&tv_end, NULL);
print_elapsed_time(&tv_start, &tv_end);
printf("blocks = %d\n", i);
fclose(fp);
fp = fopen("test.enc", "r");
ofp = fopen("tmp.bin", "w");
ctx.encrypt = _AES_cbc_encrypt;
ctx.decrypt = _AES_cbc_decrypt;
memcpy(ctx.ivec, buf + 32, _AES_BLOCK_SIZE);
while (!feof(fp)) {
if (fread(nb, 1, _AES_BLOCK_SIZE, fp) == 0) {
fprintf(stderr, "Failed in call to fread()\n");
exit(-1);
}
ctx.decrypt(nb, enb, &ctx);
fwrite(enb, 1, _AES_BLOCK_SIZE, ofp);
}
fclose(fp);
fclose(ofp);
return 0;
}