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-rw-r--r--lib/mbedtls-2.27.0/library/chachapoly.c538
1 files changed, 0 insertions, 538 deletions
diff --git a/lib/mbedtls-2.27.0/library/chachapoly.c b/lib/mbedtls-2.27.0/library/chachapoly.c
deleted file mode 100644
index 77d5477..0000000
--- a/lib/mbedtls-2.27.0/library/chachapoly.c
+++ /dev/null
@@ -1,538 +0,0 @@
-/**
- * \file chachapoly.c
- *
- * \brief ChaCha20-Poly1305 AEAD construction based on RFC 7539.
- *
- * 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_CHACHAPOLY_C)
-
-#include "mbedtls/chachapoly.h"
-#include "mbedtls/platform_util.h"
-#include "mbedtls/error.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_CHACHAPOLY_ALT)
-
-/* Parameter validation macros */
-#define CHACHAPOLY_VALIDATE_RET( cond ) \
- MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA )
-#define CHACHAPOLY_VALIDATE( cond ) \
- MBEDTLS_INTERNAL_VALIDATE( cond )
-
-#define CHACHAPOLY_STATE_INIT ( 0 )
-#define CHACHAPOLY_STATE_AAD ( 1 )
-#define CHACHAPOLY_STATE_CIPHERTEXT ( 2 ) /* Encrypting or decrypting */
-#define CHACHAPOLY_STATE_FINISHED ( 3 )
-
-/**
- * \brief Adds nul bytes to pad the AAD for Poly1305.
- *
- * \param ctx The ChaCha20-Poly1305 context.
- */
-static int chachapoly_pad_aad( mbedtls_chachapoly_context *ctx )
-{
- uint32_t partial_block_len = (uint32_t) ( ctx->aad_len % 16U );
- unsigned char zeroes[15];
-
- if( partial_block_len == 0U )
- return( 0 );
-
- memset( zeroes, 0, sizeof( zeroes ) );
-
- return( mbedtls_poly1305_update( &ctx->poly1305_ctx,
- zeroes,
- 16U - partial_block_len ) );
-}
-
-/**
- * \brief Adds nul bytes to pad the ciphertext for Poly1305.
- *
- * \param ctx The ChaCha20-Poly1305 context.
- */
-static int chachapoly_pad_ciphertext( mbedtls_chachapoly_context *ctx )
-{
- uint32_t partial_block_len = (uint32_t) ( ctx->ciphertext_len % 16U );
- unsigned char zeroes[15];
-
- if( partial_block_len == 0U )
- return( 0 );
-
- memset( zeroes, 0, sizeof( zeroes ) );
- return( mbedtls_poly1305_update( &ctx->poly1305_ctx,
- zeroes,
- 16U - partial_block_len ) );
-}
-
-void mbedtls_chachapoly_init( mbedtls_chachapoly_context *ctx )
-{
- CHACHAPOLY_VALIDATE( ctx != NULL );
-
- mbedtls_chacha20_init( &ctx->chacha20_ctx );
- mbedtls_poly1305_init( &ctx->poly1305_ctx );
- ctx->aad_len = 0U;
- ctx->ciphertext_len = 0U;
- ctx->state = CHACHAPOLY_STATE_INIT;
- ctx->mode = MBEDTLS_CHACHAPOLY_ENCRYPT;
-}
-
-void mbedtls_chachapoly_free( mbedtls_chachapoly_context *ctx )
-{
- if( ctx == NULL )
- return;
-
- mbedtls_chacha20_free( &ctx->chacha20_ctx );
- mbedtls_poly1305_free( &ctx->poly1305_ctx );
- ctx->aad_len = 0U;
- ctx->ciphertext_len = 0U;
- ctx->state = CHACHAPOLY_STATE_INIT;
- ctx->mode = MBEDTLS_CHACHAPOLY_ENCRYPT;
-}
-
-int mbedtls_chachapoly_setkey( mbedtls_chachapoly_context *ctx,
- const unsigned char key[32] )
-{
- int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
- CHACHAPOLY_VALIDATE_RET( ctx != NULL );
- CHACHAPOLY_VALIDATE_RET( key != NULL );
-
- ret = mbedtls_chacha20_setkey( &ctx->chacha20_ctx, key );
-
- return( ret );
-}
-
-int mbedtls_chachapoly_starts( mbedtls_chachapoly_context *ctx,
- const unsigned char nonce[12],
- mbedtls_chachapoly_mode_t mode )
-{
- int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
- unsigned char poly1305_key[64];
- CHACHAPOLY_VALIDATE_RET( ctx != NULL );
- CHACHAPOLY_VALIDATE_RET( nonce != NULL );
-
- /* Set counter = 0, will be update to 1 when generating Poly1305 key */
- ret = mbedtls_chacha20_starts( &ctx->chacha20_ctx, nonce, 0U );
- if( ret != 0 )
- goto cleanup;
-
- /* Generate the Poly1305 key by getting the ChaCha20 keystream output with
- * counter = 0. This is the same as encrypting a buffer of zeroes.
- * Only the first 256-bits (32 bytes) of the key is used for Poly1305.
- * The other 256 bits are discarded.
- */
- memset( poly1305_key, 0, sizeof( poly1305_key ) );
- ret = mbedtls_chacha20_update( &ctx->chacha20_ctx, sizeof( poly1305_key ),
- poly1305_key, poly1305_key );
- if( ret != 0 )
- goto cleanup;
-
- ret = mbedtls_poly1305_starts( &ctx->poly1305_ctx, poly1305_key );
-
- if( ret == 0 )
- {
- ctx->aad_len = 0U;
- ctx->ciphertext_len = 0U;
- ctx->state = CHACHAPOLY_STATE_AAD;
- ctx->mode = mode;
- }
-
-cleanup:
- mbedtls_platform_zeroize( poly1305_key, 64U );
- return( ret );
-}
-
-int mbedtls_chachapoly_update_aad( mbedtls_chachapoly_context *ctx,
- const unsigned char *aad,
- size_t aad_len )
-{
- CHACHAPOLY_VALIDATE_RET( ctx != NULL );
- CHACHAPOLY_VALIDATE_RET( aad_len == 0 || aad != NULL );
-
- if( ctx->state != CHACHAPOLY_STATE_AAD )
- return( MBEDTLS_ERR_CHACHAPOLY_BAD_STATE );
-
- ctx->aad_len += aad_len;
-
- return( mbedtls_poly1305_update( &ctx->poly1305_ctx, aad, aad_len ) );
-}
-
-int mbedtls_chachapoly_update( mbedtls_chachapoly_context *ctx,
- size_t len,
- const unsigned char *input,
- unsigned char *output )
-{
- int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
- CHACHAPOLY_VALIDATE_RET( ctx != NULL );
- CHACHAPOLY_VALIDATE_RET( len == 0 || input != NULL );
- CHACHAPOLY_VALIDATE_RET( len == 0 || output != NULL );
-
- if( ( ctx->state != CHACHAPOLY_STATE_AAD ) &&
- ( ctx->state != CHACHAPOLY_STATE_CIPHERTEXT ) )
- {
- return( MBEDTLS_ERR_CHACHAPOLY_BAD_STATE );
- }
-
- if( ctx->state == CHACHAPOLY_STATE_AAD )
- {
- ctx->state = CHACHAPOLY_STATE_CIPHERTEXT;
-
- ret = chachapoly_pad_aad( ctx );
- if( ret != 0 )
- return( ret );
- }
-
- ctx->ciphertext_len += len;
-
- if( ctx->mode == MBEDTLS_CHACHAPOLY_ENCRYPT )
- {
- ret = mbedtls_chacha20_update( &ctx->chacha20_ctx, len, input, output );
- if( ret != 0 )
- return( ret );
-
- ret = mbedtls_poly1305_update( &ctx->poly1305_ctx, output, len );
- if( ret != 0 )
- return( ret );
- }
- else /* DECRYPT */
- {
- ret = mbedtls_poly1305_update( &ctx->poly1305_ctx, input, len );
- if( ret != 0 )
- return( ret );
-
- ret = mbedtls_chacha20_update( &ctx->chacha20_ctx, len, input, output );
- if( ret != 0 )
- return( ret );
- }
-
- return( 0 );
-}
-
-int mbedtls_chachapoly_finish( mbedtls_chachapoly_context *ctx,
- unsigned char mac[16] )
-{
- int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
- unsigned char len_block[16];
- CHACHAPOLY_VALIDATE_RET( ctx != NULL );
- CHACHAPOLY_VALIDATE_RET( mac != NULL );
-
- if( ctx->state == CHACHAPOLY_STATE_INIT )
- {
- return( MBEDTLS_ERR_CHACHAPOLY_BAD_STATE );
- }
-
- if( ctx->state == CHACHAPOLY_STATE_AAD )
- {
- ret = chachapoly_pad_aad( ctx );
- if( ret != 0 )
- return( ret );
- }
- else if( ctx->state == CHACHAPOLY_STATE_CIPHERTEXT )
- {
- ret = chachapoly_pad_ciphertext( ctx );
- if( ret != 0 )
- return( ret );
- }
-
- ctx->state = CHACHAPOLY_STATE_FINISHED;
-
- /* The lengths of the AAD and ciphertext are processed by
- * Poly1305 as the final 128-bit block, encoded as little-endian integers.
- */
- len_block[ 0] = (unsigned char)( ctx->aad_len );
- len_block[ 1] = (unsigned char)( ctx->aad_len >> 8 );
- len_block[ 2] = (unsigned char)( ctx->aad_len >> 16 );
- len_block[ 3] = (unsigned char)( ctx->aad_len >> 24 );
- len_block[ 4] = (unsigned char)( ctx->aad_len >> 32 );
- len_block[ 5] = (unsigned char)( ctx->aad_len >> 40 );
- len_block[ 6] = (unsigned char)( ctx->aad_len >> 48 );
- len_block[ 7] = (unsigned char)( ctx->aad_len >> 56 );
- len_block[ 8] = (unsigned char)( ctx->ciphertext_len );
- len_block[ 9] = (unsigned char)( ctx->ciphertext_len >> 8 );
- len_block[10] = (unsigned char)( ctx->ciphertext_len >> 16 );
- len_block[11] = (unsigned char)( ctx->ciphertext_len >> 24 );
- len_block[12] = (unsigned char)( ctx->ciphertext_len >> 32 );
- len_block[13] = (unsigned char)( ctx->ciphertext_len >> 40 );
- len_block[14] = (unsigned char)( ctx->ciphertext_len >> 48 );
- len_block[15] = (unsigned char)( ctx->ciphertext_len >> 56 );
-
- ret = mbedtls_poly1305_update( &ctx->poly1305_ctx, len_block, 16U );
- if( ret != 0 )
- return( ret );
-
- ret = mbedtls_poly1305_finish( &ctx->poly1305_ctx, mac );
-
- return( ret );
-}
-
-static int chachapoly_crypt_and_tag( mbedtls_chachapoly_context *ctx,
- mbedtls_chachapoly_mode_t mode,
- size_t length,
- const unsigned char nonce[12],
- const unsigned char *aad,
- size_t aad_len,
- const unsigned char *input,
- unsigned char *output,
- unsigned char tag[16] )
-{
- int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-
- ret = mbedtls_chachapoly_starts( ctx, nonce, mode );
- if( ret != 0 )
- goto cleanup;
-
- ret = mbedtls_chachapoly_update_aad( ctx, aad, aad_len );
- if( ret != 0 )
- goto cleanup;
-
- ret = mbedtls_chachapoly_update( ctx, length, input, output );
- if( ret != 0 )
- goto cleanup;
-
- ret = mbedtls_chachapoly_finish( ctx, tag );
-
-cleanup:
- return( ret );
-}
-
-int mbedtls_chachapoly_encrypt_and_tag( mbedtls_chachapoly_context *ctx,
- size_t length,
- const unsigned char nonce[12],
- const unsigned char *aad,
- size_t aad_len,
- const unsigned char *input,
- unsigned char *output,
- unsigned char tag[16] )
-{
- CHACHAPOLY_VALIDATE_RET( ctx != NULL );
- CHACHAPOLY_VALIDATE_RET( nonce != NULL );
- CHACHAPOLY_VALIDATE_RET( tag != NULL );
- CHACHAPOLY_VALIDATE_RET( aad_len == 0 || aad != NULL );
- CHACHAPOLY_VALIDATE_RET( length == 0 || input != NULL );
- CHACHAPOLY_VALIDATE_RET( length == 0 || output != NULL );
-
- return( chachapoly_crypt_and_tag( ctx, MBEDTLS_CHACHAPOLY_ENCRYPT,
- length, nonce, aad, aad_len,
- input, output, tag ) );
-}
-
-int mbedtls_chachapoly_auth_decrypt( mbedtls_chachapoly_context *ctx,
- size_t length,
- const unsigned char nonce[12],
- const unsigned char *aad,
- size_t aad_len,
- const unsigned char tag[16],
- const unsigned char *input,
- unsigned char *output )
-{
- int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
- unsigned char check_tag[16];
- size_t i;
- int diff;
- CHACHAPOLY_VALIDATE_RET( ctx != NULL );
- CHACHAPOLY_VALIDATE_RET( nonce != NULL );
- CHACHAPOLY_VALIDATE_RET( tag != NULL );
- CHACHAPOLY_VALIDATE_RET( aad_len == 0 || aad != NULL );
- CHACHAPOLY_VALIDATE_RET( length == 0 || input != NULL );
- CHACHAPOLY_VALIDATE_RET( length == 0 || output != NULL );
-
- if( ( ret = chachapoly_crypt_and_tag( ctx,
- MBEDTLS_CHACHAPOLY_DECRYPT, length, nonce,
- aad, aad_len, input, output, check_tag ) ) != 0 )
- {
- return( ret );
- }
-
- /* Check tag in "constant-time" */
- for( diff = 0, i = 0; i < sizeof( check_tag ); i++ )
- diff |= tag[i] ^ check_tag[i];
-
- if( diff != 0 )
- {
- mbedtls_platform_zeroize( output, length );
- return( MBEDTLS_ERR_CHACHAPOLY_AUTH_FAILED );
- }
-
- return( 0 );
-}
-
-#endif /* MBEDTLS_CHACHAPOLY_ALT */
-
-#if defined(MBEDTLS_SELF_TEST)
-
-static const unsigned char test_key[1][32] =
-{
- {
- 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
- 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
- 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
- 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f
- }
-};
-
-static const unsigned char test_nonce[1][12] =
-{
- {
- 0x07, 0x00, 0x00, 0x00, /* 32-bit common part */
- 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47 /* 64-bit IV */
- }
-};
-
-static const unsigned char test_aad[1][12] =
-{
- {
- 0x50, 0x51, 0x52, 0x53, 0xc0, 0xc1, 0xc2, 0xc3,
- 0xc4, 0xc5, 0xc6, 0xc7
- }
-};
-
-static const size_t test_aad_len[1] =
-{
- 12U
-};
-
-static const unsigned char test_input[1][114] =
-{
- {
- 0x4c, 0x61, 0x64, 0x69, 0x65, 0x73, 0x20, 0x61,
- 0x6e, 0x64, 0x20, 0x47, 0x65, 0x6e, 0x74, 0x6c,
- 0x65, 0x6d, 0x65, 0x6e, 0x20, 0x6f, 0x66, 0x20,
- 0x74, 0x68, 0x65, 0x20, 0x63, 0x6c, 0x61, 0x73,
- 0x73, 0x20, 0x6f, 0x66, 0x20, 0x27, 0x39, 0x39,
- 0x3a, 0x20, 0x49, 0x66, 0x20, 0x49, 0x20, 0x63,
- 0x6f, 0x75, 0x6c, 0x64, 0x20, 0x6f, 0x66, 0x66,
- 0x65, 0x72, 0x20, 0x79, 0x6f, 0x75, 0x20, 0x6f,
- 0x6e, 0x6c, 0x79, 0x20, 0x6f, 0x6e, 0x65, 0x20,
- 0x74, 0x69, 0x70, 0x20, 0x66, 0x6f, 0x72, 0x20,
- 0x74, 0x68, 0x65, 0x20, 0x66, 0x75, 0x74, 0x75,
- 0x72, 0x65, 0x2c, 0x20, 0x73, 0x75, 0x6e, 0x73,
- 0x63, 0x72, 0x65, 0x65, 0x6e, 0x20, 0x77, 0x6f,
- 0x75, 0x6c, 0x64, 0x20, 0x62, 0x65, 0x20, 0x69,
- 0x74, 0x2e
- }
-};
-
-static const unsigned char test_output[1][114] =
-{
- {
- 0xd3, 0x1a, 0x8d, 0x34, 0x64, 0x8e, 0x60, 0xdb,
- 0x7b, 0x86, 0xaf, 0xbc, 0x53, 0xef, 0x7e, 0xc2,
- 0xa4, 0xad, 0xed, 0x51, 0x29, 0x6e, 0x08, 0xfe,
- 0xa9, 0xe2, 0xb5, 0xa7, 0x36, 0xee, 0x62, 0xd6,
- 0x3d, 0xbe, 0xa4, 0x5e, 0x8c, 0xa9, 0x67, 0x12,
- 0x82, 0xfa, 0xfb, 0x69, 0xda, 0x92, 0x72, 0x8b,
- 0x1a, 0x71, 0xde, 0x0a, 0x9e, 0x06, 0x0b, 0x29,
- 0x05, 0xd6, 0xa5, 0xb6, 0x7e, 0xcd, 0x3b, 0x36,
- 0x92, 0xdd, 0xbd, 0x7f, 0x2d, 0x77, 0x8b, 0x8c,
- 0x98, 0x03, 0xae, 0xe3, 0x28, 0x09, 0x1b, 0x58,
- 0xfa, 0xb3, 0x24, 0xe4, 0xfa, 0xd6, 0x75, 0x94,
- 0x55, 0x85, 0x80, 0x8b, 0x48, 0x31, 0xd7, 0xbc,
- 0x3f, 0xf4, 0xde, 0xf0, 0x8e, 0x4b, 0x7a, 0x9d,
- 0xe5, 0x76, 0xd2, 0x65, 0x86, 0xce, 0xc6, 0x4b,
- 0x61, 0x16
- }
-};
-
-static const size_t test_input_len[1] =
-{
- 114U
-};
-
-static const unsigned char test_mac[1][16] =
-{
- {
- 0x1a, 0xe1, 0x0b, 0x59, 0x4f, 0x09, 0xe2, 0x6a,
- 0x7e, 0x90, 0x2e, 0xcb, 0xd0, 0x60, 0x06, 0x91
- }
-};
-
-/* Make sure no other definition is already present. */
-#undef ASSERT
-
-#define ASSERT( cond, args ) \
- do \
- { \
- if( ! ( cond ) ) \
- { \
- if( verbose != 0 ) \
- mbedtls_printf args; \
- \
- return( -1 ); \
- } \
- } \
- while( 0 )
-
-int mbedtls_chachapoly_self_test( int verbose )
-{
- mbedtls_chachapoly_context ctx;
- unsigned i;
- int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
- unsigned char output[200];
- unsigned char mac[16];
-
- for( i = 0U; i < 1U; i++ )
- {
- if( verbose != 0 )
- mbedtls_printf( " ChaCha20-Poly1305 test %u ", i );
-
- mbedtls_chachapoly_init( &ctx );
-
- ret = mbedtls_chachapoly_setkey( &ctx, test_key[i] );
- ASSERT( 0 == ret, ( "setkey() error code: %i\n", ret ) );
-
- ret = mbedtls_chachapoly_encrypt_and_tag( &ctx,
- test_input_len[i],
- test_nonce[i],
- test_aad[i],
- test_aad_len[i],
- test_input[i],
- output,
- mac );
-
- ASSERT( 0 == ret, ( "crypt_and_tag() error code: %i\n", ret ) );
-
- ASSERT( 0 == memcmp( output, test_output[i], test_input_len[i] ),
- ( "failure (wrong output)\n" ) );
-
- ASSERT( 0 == memcmp( mac, test_mac[i], 16U ),
- ( "failure (wrong MAC)\n" ) );
-
- mbedtls_chachapoly_free( &ctx );
-
- if( verbose != 0 )
- mbedtls_printf( "passed\n" );
- }
-
- if( verbose != 0 )
- mbedtls_printf( "\n" );
-
- return( 0 );
-}
-
-#endif /* MBEDTLS_SELF_TEST */
-
-#endif /* MBEDTLS_CHACHAPOLY_C */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-22 13:24:30 +0000