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aes: add test unit for aes128
This commit add test unit for aes128. Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com> Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Philippe Reynes
Tom Rini
parent
8302d1708a
commit
ebcdb8df51
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@ -8,3 +8,4 @@ obj-y += lmb.o
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obj-y += string.o
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obj-$(CONFIG_ERRNO_STR) += test_errno_str.o
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obj-$(CONFIG_UT_LIB_ASN1) += asn1.o
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obj-$(CONFIG_AES) += test_aes.o
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162
test/lib/test_aes.c
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162
test/lib/test_aes.c
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@ -0,0 +1,162 @@
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2019 Philippe Reynes <philippe.reynes@softathome.com>
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*
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* Unit tests for aes functions
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*/
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#include <common.h>
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#include <command.h>
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#include <hexdump.h>
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#include <uboot_aes.h>
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#include <test/lib.h>
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#include <test/test.h>
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#include <test/ut.h>
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#define TEST_AES_ONE_BLOCK 0
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#define TEST_AES_CBC_CHAIN 1
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struct test_aes_s {
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int key_len;
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int key_exp_len;
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int type;
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int num_block;
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};
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static struct test_aes_s test_aes[] = {
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{ AES128_KEY_LENGTH, AES128_EXPAND_KEY_LENGTH, TEST_AES_ONE_BLOCK, 1 },
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{ AES128_KEY_LENGTH, AES128_EXPAND_KEY_LENGTH, TEST_AES_CBC_CHAIN, 16 },
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};
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static void rand_buf(u8 *buf, int size)
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{
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int i;
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for (i = 0; i < size; i++)
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buf[i] = rand() & 0xff;
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}
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static int lib_test_aes_one_block(struct unit_test_state *uts, int key_len,
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u8 *key_exp, u8 *iv, int num_block,
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u8 *nocipher, u8 *ciphered, u8 *uncipher)
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{
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aes_encrypt(key_len, nocipher, key_exp, ciphered);
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aes_decrypt(key_len, ciphered, key_exp, uncipher);
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ut_asserteq_mem(nocipher, uncipher, AES_BLOCK_LENGTH);
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/* corrupt the expanded key */
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key_exp[0]++;
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aes_decrypt(key_len, ciphered, key_exp, uncipher);
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ut_assertf(memcmp(nocipher, uncipher, AES_BLOCK_LENGTH),
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"nocipher and uncipher should be different\n");
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return 0;
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}
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static int lib_test_aes_cbc_chain(struct unit_test_state *uts, int key_len,
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u8 *key_exp, u8 *iv, int num_block,
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u8 *nocipher, u8 *ciphered, u8 *uncipher)
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{
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aes_cbc_encrypt_blocks(key_len, key_exp, iv,
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nocipher, ciphered, num_block);
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aes_cbc_decrypt_blocks(key_len, key_exp, iv,
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ciphered, uncipher, num_block);
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ut_asserteq_mem(nocipher, uncipher, num_block * AES_BLOCK_LENGTH);
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/* corrupt the expanded key */
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key_exp[0]++;
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aes_cbc_decrypt_blocks(key_len, key_exp, iv,
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ciphered, uncipher, num_block);
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ut_assertf(memcmp(nocipher, uncipher, num_block * AES_BLOCK_LENGTH),
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"nocipher and uncipher should be different\n");
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return 0;
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}
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static int _lib_test_aes_run(struct unit_test_state *uts, int key_len,
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int key_exp_len, int type, int num_block)
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{
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u8 *key, *key_exp, *iv;
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u8 *nocipher, *ciphered, *uncipher;
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int ret;
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/* Allocate all the buffer */
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key = malloc(key_len);
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ut_assertnonnull(key);
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key_exp = malloc(key_exp_len);
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ut_assertnonnull(key_exp);
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iv = malloc(AES_BLOCK_LENGTH);
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ut_assertnonnull(iv);
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nocipher = malloc(num_block * AES_BLOCK_LENGTH);
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ut_assertnonnull(nocipher);
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ciphered = malloc((num_block + 1) * AES_BLOCK_LENGTH);
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ut_assertnonnull(ciphered);
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uncipher = malloc((num_block + 1) * AES_BLOCK_LENGTH);
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ut_assertnonnull(uncipher);
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/* Initialize all buffer */
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rand_buf(key, key_len);
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rand_buf(iv, AES_BLOCK_LENGTH);
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rand_buf(nocipher, num_block * AES_BLOCK_LENGTH);
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memset(ciphered, 0, (num_block + 1) * AES_BLOCK_LENGTH);
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memset(uncipher, 0, (num_block + 1) * AES_BLOCK_LENGTH);
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/* Expand the key */
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aes_expand_key(key, key_len, key_exp);
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/* Encrypt and decrypt */
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switch (type) {
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case TEST_AES_ONE_BLOCK:
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ret = lib_test_aes_one_block(uts, key_len, key_exp, iv,
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num_block, nocipher,
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ciphered, uncipher);
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break;
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case TEST_AES_CBC_CHAIN:
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ret = lib_test_aes_cbc_chain(uts, key_len, key_exp, iv,
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num_block, nocipher,
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ciphered, uncipher);
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break;
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default:
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printf("%s: unknown type (type=%d)\n", __func__, type);
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ret = -1;
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};
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/* Free all the data */
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free(key);
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free(key_exp);
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free(iv);
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free(nocipher);
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free(ciphered);
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free(uncipher);
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return ret;
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}
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static int lib_test_aes_run(struct unit_test_state *uts,
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struct test_aes_s *test)
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{
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int key_len = test->key_len;
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int key_exp_len = test->key_exp_len;
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int type = test->type;
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int num_block = test->num_block;
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return _lib_test_aes_run(uts, key_len, key_exp_len,
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type, num_block);
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}
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static int lib_test_aes(struct unit_test_state *uts)
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{
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int i, ret = 0;
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for (i = 0; i < ARRAY_SIZE(test_aes); i++) {
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ret = lib_test_aes_run(uts, &test_aes[i]);
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if (ret)
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break;
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}
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return ret;
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}
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LIB_TEST(lib_test_aes, 0);
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