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Diffstat (limited to 'lib/mbedtls-2.27.0/library/xtea.c')
-rw-r--r--lib/mbedtls-2.27.0/library/xtea.c271
1 files changed, 0 insertions, 271 deletions
diff --git a/lib/mbedtls-2.27.0/library/xtea.c b/lib/mbedtls-2.27.0/library/xtea.c
deleted file mode 100644
index 4b8c9c0..0000000
--- a/lib/mbedtls-2.27.0/library/xtea.c
+++ /dev/null
@@ -1,271 +0,0 @@
-/*
- * An 32-bit implementation of the XTEA algorithm
- *
- * Copyright The Mbed TLS Contributors
- * SPDX-License-Identifier: Apache-2.0
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may
- * not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "common.h"
-
-#if defined(MBEDTLS_XTEA_C)
-
-#include "mbedtls/xtea.h"
-#include "mbedtls/platform_util.h"
-
-#include <string.h>
-
-#if defined(MBEDTLS_SELF_TEST)
-#if defined(MBEDTLS_PLATFORM_C)
-#include "mbedtls/platform.h"
-#else
-#include <stdio.h>
-#define mbedtls_printf printf
-#endif /* MBEDTLS_PLATFORM_C */
-#endif /* MBEDTLS_SELF_TEST */
-
-#if !defined(MBEDTLS_XTEA_ALT)
-
-/*
- * 32-bit integer manipulation macros (big endian)
- */
-#ifndef GET_UINT32_BE
-#define GET_UINT32_BE(n,b,i) \
-{ \
- (n) = ( (uint32_t) (b)[(i) ] << 24 ) \
- | ( (uint32_t) (b)[(i) + 1] << 16 ) \
- | ( (uint32_t) (b)[(i) + 2] << 8 ) \
- | ( (uint32_t) (b)[(i) + 3] ); \
-}
-#endif
-
-#ifndef PUT_UINT32_BE
-#define PUT_UINT32_BE(n,b,i) \
-{ \
- (b)[(i) ] = (unsigned char) ( (n) >> 24 ); \
- (b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \
- (b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \
- (b)[(i) + 3] = (unsigned char) ( (n) ); \
-}
-#endif
-
-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++ )
- {
- GET_UINT32_BE( ctx->k[i], 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;
-
- GET_UINT32_BE( v0, input, 0 );
- GET_UINT32_BE( v1, 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]);
- }
- }
-
- PUT_UINT32_BE( v0, output, 0 );
- 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 */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-22 13:36:28 +0000