diff options
Diffstat (limited to 'thirdparty/mbedtls/library/xtea.c')
| -rw-r--r-- | thirdparty/mbedtls/library/xtea.c | 224 |
1 files changed, 0 insertions, 224 deletions
diff --git a/thirdparty/mbedtls/library/xtea.c b/thirdparty/mbedtls/library/xtea.c deleted file mode 100644 index f4aca56c2f..0000000000 --- a/thirdparty/mbedtls/library/xtea.c +++ /dev/null @@ -1,224 +0,0 @@ -/* - * A 32-bit implementation of the XTEA algorithm - * - * Copyright The Mbed TLS Contributors - * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later - */ - -#include "common.h" - -#if defined(MBEDTLS_XTEA_C) - -#include "mbedtls/xtea.h" -#include "mbedtls/platform_util.h" - -#include <string.h> - -#include "mbedtls/platform.h" - -#if !defined(MBEDTLS_XTEA_ALT) - -void mbedtls_xtea_init(mbedtls_xtea_context *ctx) -{ - memset(ctx, 0, sizeof(mbedtls_xtea_context)); -} - -void mbedtls_xtea_free(mbedtls_xtea_context *ctx) -{ - if (ctx == NULL) { - return; - } - - mbedtls_platform_zeroize(ctx, sizeof(mbedtls_xtea_context)); -} - -/* - * XTEA key schedule - */ -void mbedtls_xtea_setup(mbedtls_xtea_context *ctx, const unsigned char key[16]) -{ - int i; - - memset(ctx, 0, sizeof(mbedtls_xtea_context)); - - for (i = 0; i < 4; i++) { - ctx->k[i] = MBEDTLS_GET_UINT32_BE(key, i << 2); - } -} - -/* - * XTEA encrypt function - */ -int mbedtls_xtea_crypt_ecb(mbedtls_xtea_context *ctx, int mode, - const unsigned char input[8], unsigned char output[8]) -{ - uint32_t *k, v0, v1, i; - - k = ctx->k; - - v0 = MBEDTLS_GET_UINT32_BE(input, 0); - v1 = MBEDTLS_GET_UINT32_BE(input, 4); - - if (mode == MBEDTLS_XTEA_ENCRYPT) { - uint32_t sum = 0, delta = 0x9E3779B9; - - for (i = 0; i < 32; i++) { - v0 += (((v1 << 4) ^ (v1 >> 5)) + v1) ^ (sum + k[sum & 3]); - sum += delta; - v1 += (((v0 << 4) ^ (v0 >> 5)) + v0) ^ (sum + k[(sum>>11) & 3]); - } - } else { /* MBEDTLS_XTEA_DECRYPT */ - uint32_t delta = 0x9E3779B9, sum = delta * 32; - - for (i = 0; i < 32; i++) { - v1 -= (((v0 << 4) ^ (v0 >> 5)) + v0) ^ (sum + k[(sum>>11) & 3]); - sum -= delta; - v0 -= (((v1 << 4) ^ (v1 >> 5)) + v1) ^ (sum + k[sum & 3]); - } - } - - MBEDTLS_PUT_UINT32_BE(v0, output, 0); - MBEDTLS_PUT_UINT32_BE(v1, output, 4); - - return 0; -} - -#if defined(MBEDTLS_CIPHER_MODE_CBC) -/* - * XTEA-CBC buffer encryption/decryption - */ -int mbedtls_xtea_crypt_cbc(mbedtls_xtea_context *ctx, int mode, size_t length, - unsigned char iv[8], const unsigned char *input, - unsigned char *output) -{ - int i; - unsigned char temp[8]; - - if (length % 8) { - return MBEDTLS_ERR_XTEA_INVALID_INPUT_LENGTH; - } - - if (mode == MBEDTLS_XTEA_DECRYPT) { - while (length > 0) { - memcpy(temp, input, 8); - mbedtls_xtea_crypt_ecb(ctx, mode, input, output); - - for (i = 0; i < 8; i++) { - output[i] = (unsigned char) (output[i] ^ iv[i]); - } - - memcpy(iv, temp, 8); - - input += 8; - output += 8; - length -= 8; - } - } else { - while (length > 0) { - for (i = 0; i < 8; i++) { - output[i] = (unsigned char) (input[i] ^ iv[i]); - } - - mbedtls_xtea_crypt_ecb(ctx, mode, output, output); - memcpy(iv, output, 8); - - input += 8; - output += 8; - length -= 8; - } - } - - return 0; -} -#endif /* MBEDTLS_CIPHER_MODE_CBC */ -#endif /* !MBEDTLS_XTEA_ALT */ - -#if defined(MBEDTLS_SELF_TEST) - -/* - * XTEA tests vectors (non-official) - */ - -static const unsigned char xtea_test_key[6][16] = -{ - { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, - 0x0c, 0x0d, 0x0e, 0x0f }, - { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, - 0x0c, 0x0d, 0x0e, 0x0f }, - { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, - 0x0c, 0x0d, 0x0e, 0x0f }, - { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00 }, - { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00 }, - { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00 } -}; - -static const unsigned char xtea_test_pt[6][8] = -{ - { 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48 }, - { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 }, - { 0x5a, 0x5b, 0x6e, 0x27, 0x89, 0x48, 0xd7, 0x7f }, - { 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48 }, - { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 }, - { 0x70, 0xe1, 0x22, 0x5d, 0x6e, 0x4e, 0x76, 0x55 } -}; - -static const unsigned char xtea_test_ct[6][8] = -{ - { 0x49, 0x7d, 0xf3, 0xd0, 0x72, 0x61, 0x2c, 0xb5 }, - { 0xe7, 0x8f, 0x2d, 0x13, 0x74, 0x43, 0x41, 0xd8 }, - { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 }, - { 0xa0, 0x39, 0x05, 0x89, 0xf8, 0xb8, 0xef, 0xa5 }, - { 0xed, 0x23, 0x37, 0x5a, 0x82, 0x1a, 0x8c, 0x2d }, - { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 } -}; - -/* - * Checkup routine - */ -int mbedtls_xtea_self_test(int verbose) -{ - int i, ret = 0; - unsigned char buf[8]; - mbedtls_xtea_context ctx; - - mbedtls_xtea_init(&ctx); - for (i = 0; i < 6; i++) { - if (verbose != 0) { - mbedtls_printf(" XTEA test #%d: ", i + 1); - } - - memcpy(buf, xtea_test_pt[i], 8); - - mbedtls_xtea_setup(&ctx, xtea_test_key[i]); - mbedtls_xtea_crypt_ecb(&ctx, MBEDTLS_XTEA_ENCRYPT, buf, buf); - - if (memcmp(buf, xtea_test_ct[i], 8) != 0) { - if (verbose != 0) { - mbedtls_printf("failed\n"); - } - - ret = 1; - goto exit; - } - - if (verbose != 0) { - mbedtls_printf("passed\n"); - } - } - - if (verbose != 0) { - mbedtls_printf("\n"); - } - -exit: - mbedtls_xtea_free(&ctx); - - return ret; -} - -#endif /* MBEDTLS_SELF_TEST */ - -#endif /* MBEDTLS_XTEA_C */ |