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/*
* test-aes-key-wrap.c
* -------------------
* Test code for AES Key Wrap.
*
* Authors: Rob Austein
* Copyright (c) 2015, SUNET
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <assert.h>
#include <hal.h>
#ifndef TC_BUFSIZE
#define TC_BUFSIZE 4096
#endif
/*
* Test cases from RFC 5649 all use a 192-bit key, which our AES
* implementation doesn't support, so had to write our own.
*/
static const uint8_t Q[] = { /* Plaintext, 81 bytes */
0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x21, 0x20, 0x20, 0x4d, 0x79, 0x20, 0x6e,
0x61, 0x6d, 0x65, 0x20, 0x69, 0x73, 0x20, 0x49, 0x6e, 0x69, 0x67, 0x6f,
0x20, 0x4d, 0x6f, 0x6e, 0x74, 0x6f, 0x79, 0x61, 0x2e, 0x20, 0x20, 0x59,
0x6f, 0x75, 0x20, 0x62, 0x72, 0x6f, 0x6b, 0x65, 0x20, 0x6d, 0x79, 0x20,
0x41, 0x45, 0x53, 0x20, 0x6b, 0x65, 0x79, 0x20, 0x77, 0x72, 0x61, 0x70,
0x70, 0x65, 0x72, 0x2e, 0x20, 0x20, 0x50, 0x72, 0x65, 0x70, 0x61, 0x72,
0x65, 0x20, 0x74, 0x6f, 0x20, 0x64, 0x69, 0x65, 0x2e
};
static const uint8_t K_128[] = { /* 128-bit KEK, 16 bytes */
0xbc, 0x2a, 0xd8, 0x90, 0xd8, 0x91, 0x10, 0x65, 0xf0, 0x42, 0x10, 0x1b,
0x4a, 0x6b, 0xaf, 0x99
};
static const uint8_t K_256[] = { /* 256-bit KEK, 32 bytes */
0xe3, 0x97, 0x52, 0x81, 0x2b, 0x7e, 0xc2, 0xa4, 0x6a, 0xac, 0x50, 0x18,
0x0d, 0x10, 0xc6, 0x85, 0x2c, 0xcf, 0x86, 0x0a, 0xa9, 0x4f, 0x69, 0xab,
0x16, 0xa6, 0x4f, 0x3e, 0x96, 0xa0, 0xbd, 0x9e
};
static const uint8_t C_128[] = { /* Plaintext wrapped by 128-bit KEK, 96 bytes */
0xb0, 0x10, 0x91, 0x7b, 0xe7, 0x67, 0x9c, 0x10, 0x16, 0x64, 0xe7, 0x73,
0xd2, 0x68, 0xba, 0xed, 0x8c, 0x50, 0x49, 0x80, 0x16, 0x2f, 0x4e, 0x97,
0xe8, 0x45, 0x5c, 0x2f, 0x2b, 0x7a, 0x88, 0x0e, 0xd8, 0xef, 0xaa, 0x40,
0xb0, 0x2e, 0xb4, 0x50, 0xe7, 0x60, 0xf7, 0xbb, 0xed, 0x56, 0x79, 0x16,
0x65, 0xb7, 0x13, 0x9b, 0x4c, 0x66, 0x86, 0x5f, 0x4d, 0x53, 0x2d, 0xcd,
0x83, 0x41, 0x01, 0x35, 0x0d, 0x06, 0x39, 0x4e, 0x9e, 0xfe, 0x68, 0xc5,
0x2f, 0x37, 0x33, 0x99, 0xbb, 0x88, 0xf7, 0x76, 0x1e, 0x82, 0x48, 0xd6,
0xa2, 0xf3, 0x9b, 0x92, 0x01, 0x65, 0xcb, 0x48, 0x36, 0xf5, 0x42, 0xd3
};
static const uint8_t C_256[] = { /* Plaintext wrapped by 256-bit KEK, 96 bytes */
0x08, 0x00, 0xbc, 0x1b, 0x35, 0xe4, 0x2a, 0x69, 0x3f, 0x43, 0x07, 0x54,
0x31, 0xba, 0xb6, 0x89, 0x7c, 0x64, 0x9f, 0x03, 0x84, 0xc4, 0x4a, 0x71,
0xdb, 0xcb, 0xae, 0x55, 0x30, 0xdf, 0xb0, 0x2b, 0xc3, 0x91, 0x5d, 0x07,
0xa9, 0x24, 0xdb, 0xe7, 0xbe, 0x4d, 0x0d, 0x62, 0xd4, 0xf8, 0xb1, 0x94,
0xf1, 0xb9, 0x22, 0xb5, 0x94, 0xab, 0x7e, 0x0b, 0x15, 0x6a, 0xd9, 0x5f,
0x6c, 0x20, 0xb7, 0x7e, 0x13, 0x19, 0xfa, 0xc4, 0x70, 0xec, 0x0d, 0xbd,
0xf7, 0x01, 0xc6, 0xb3, 0x9a, 0x19, 0xaf, 0xf2, 0x47, 0x68, 0xea, 0x7e,
0x97, 0x7e, 0x52, 0x2e, 0xd4, 0x03, 0x31, 0xcb, 0x22, 0xb6, 0xfe, 0xf5
};
static const char *format_hex(const uint8_t *bin, const size_t len, char *hex, const size_t max)
{
size_t i;
assert(bin != NULL && hex != NULL && len * 3 < max);
if (len == 0)
return "";
for (i = 0; i < len; i++)
sprintf(hex + 3 * i, "%02x:", bin[i]);
hex[len * 3 - 1] = '\0';
return hex;
}
static int run_test(const hal_core_t *core,
const uint8_t * const K, const size_t K_len,
const uint8_t * const C, const size_t C_len)
{
const size_t Q_len = sizeof(Q);
uint8_t q[TC_BUFSIZE], c[TC_BUFSIZE];
size_t q_len = sizeof(q), c_len = sizeof(c);
char h1[TC_BUFSIZE * 3 + 1], h2[TC_BUFSIZE * 3 + 1];
hal_error_t err;
int ok1 = 1, ok2 = 1;
/*
* Wrap and compare results.
*/
printf("Wrapping with %lu-bit KEK...\n", (unsigned long) K_len * 8);
if ((err = hal_aes_keywrap(core, K, K_len, Q, Q_len, c, &c_len)) != HAL_OK) {
printf("Couldn't wrap with %lu-bit KEK: %s\n",
(unsigned long) K_len * 8, hal_error_string(err));
ok1 = 0;
}
else if (C_len != c_len || memcmp(C, c, C_len) != 0) {
printf("Ciphertext mismatch:\n Want: %s\n Got: %s\n",
format_hex(C, C_len, h1, sizeof(h1)),
format_hex(c, c_len, h2, sizeof(h2)));
ok1 = 0;
}
else {
printf("OK\n");
}
/*
* Unwrap and compare results.
*/
printf("Unwrapping with %lu-bit KEK...\n", (unsigned long) K_len * 8);
if ((err = hal_aes_keyunwrap(core, K, K_len, C, C_len, q, &q_len)) != HAL_OK) {
printf("Couldn't unwrap with %lu-bit KEK: %s\n",
(unsigned long) K_len * 8, hal_error_string(err));
ok2 = 0;
}
else if (Q_len != q_len || memcmp(Q, q, Q_len) != 0) {
printf("Plaintext mismatch:\n Want: %s\n Got: %s\n",
format_hex(Q, Q_len, h1, sizeof(h1)),
format_hex(q, q_len, h2, sizeof(h2)));
ok2 = 0;
}
else {
printf("OK\n");
}
return ok1 && ok2;
}
int main (int argc, char *argv[])
{
int failures = 0;
printf("Testing whether AES core reports present...");
const hal_core_t *core = hal_core_find(AES_CORE_NAME, NULL);
if (core == NULL) {
printf("no, skipping keywrap tests\n");
}
else {
printf("yes\n");
if (!run_test(core, K_128, sizeof(K_128), C_128, sizeof(C_128)))
failures++;
if (!run_test(core, K_256, sizeof(K_256), C_256, sizeof(C_256)))
failures++;
}
return failures;
}
/*
* "Any programmer who fails to comply with the standard naming, formatting,
* or commenting conventions should be shot. If it so happens that it is
* inconvenient to shoot him, then he is to be politely requested to recode
* his program in adherence to the above standard."
* -- Michael Spier, Digital Equipment Corporation
*
* Local variables:
* indent-tabs-mode: nil
* End:
*/
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