cipher: Add wrappers for AES-XTS
AES-XTS does not support multipart use as it can only operate on an entire sector at a time.
This commit is contained in:
Jaeden Amero
parent
425382d4fb
commit
c653990ed5
5 changed files with 260 additions and 1 deletions
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@ -167,6 +167,8 @@ typedef enum {
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MBEDTLS_CIPHER_AES_128_OFB, /**< AES 128-bit cipher in OFB mode. */
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MBEDTLS_CIPHER_AES_192_OFB, /**< AES 192-bit cipher in OFB mode. */
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MBEDTLS_CIPHER_AES_256_OFB, /**< AES 256-bit cipher in OFB mode. */
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MBEDTLS_CIPHER_AES_128_XTS, /**< AES 128-bit cipher in XTS block mode. */
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MBEDTLS_CIPHER_AES_256_XTS, /**< AES 256-bit cipher in XTS block mode. */
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} mbedtls_cipher_type_t;
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/** Supported cipher modes. */
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@ -180,6 +182,7 @@ typedef enum {
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MBEDTLS_MODE_GCM, /**< The GCM cipher mode. */
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MBEDTLS_MODE_STREAM, /**< The stream cipher mode. */
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MBEDTLS_MODE_CCM, /**< The CCM cipher mode. */
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MBEDTLS_MODE_XTS, /**< The XTS cipher mode. */
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} mbedtls_cipher_mode_t;
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/** Supported cipher padding types. */
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@ -295,7 +298,8 @@ typedef struct {
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/** Number of Bytes that have not been processed yet. */
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size_t unprocessed_len;
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/** Current IV or NONCE_COUNTER for CTR-mode. */
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/** Current IV or NONCE_COUNTER for CTR-mode, data unit (or sector) number
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* for XTS-mode. */
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unsigned char iv[MBEDTLS_MAX_IV_LENGTH];
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/** IV size in Bytes, for ciphers with variable-length IVs. */
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@ -79,6 +79,13 @@ struct mbedtls_cipher_base_t
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const unsigned char *input, unsigned char *output );
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_XTS)
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/** Encrypt or decrypt using XTS. */
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int (*xts_func)( void *ctx, mbedtls_operation_t mode, size_t length,
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const unsigned char data_unit[16],
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const unsigned char *input, unsigned char *output );
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_STREAM)
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/** Encrypt using STREAM */
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int (*stream_func)( void *ctx, size_t length,
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@ -456,6 +456,27 @@ int mbedtls_cipher_update( mbedtls_cipher_context_t *ctx, const unsigned char *i
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}
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#endif /* MBEDTLS_CIPHER_MODE_CTR */
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#if defined(MBEDTLS_CIPHER_MODE_XTS)
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if( ctx->cipher_info->mode == MBEDTLS_MODE_XTS )
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{
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if( ctx->unprocessed_len > 0 ) {
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/* We can only process an entire data unit at a time. */
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return( MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE );
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}
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ret = ctx->cipher_info->base->xts_func( ctx->cipher_ctx,
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ctx->operation, ilen, ctx->iv, input, output );
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if( ret != 0 )
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{
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return( ret );
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}
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*olen = ilen;
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return( 0 );
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}
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#endif /* MBEDTLS_CIPHER_MODE_XTS */
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#if defined(MBEDTLS_CIPHER_MODE_STREAM)
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if( ctx->cipher_info->mode == MBEDTLS_MODE_STREAM )
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{
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@ -658,6 +679,7 @@ int mbedtls_cipher_finish( mbedtls_cipher_context_t *ctx,
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MBEDTLS_MODE_OFB == ctx->cipher_info->mode ||
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MBEDTLS_MODE_CTR == ctx->cipher_info->mode ||
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MBEDTLS_MODE_GCM == ctx->cipher_info->mode ||
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MBEDTLS_MODE_XTS == ctx->cipher_info->mode ||
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MBEDTLS_MODE_STREAM == ctx->cipher_info->mode )
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{
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return( 0 );
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@ -161,6 +161,33 @@ static int aes_crypt_ctr_wrap( void *ctx, size_t length, size_t *nc_off,
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}
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#endif /* MBEDTLS_CIPHER_MODE_CTR */
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#if defined(MBEDTLS_CIPHER_MODE_XTS)
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static int aes_crypt_xts_wrap( void *ctx, mbedtls_operation_t operation,
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size_t length,
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const unsigned char data_unit[16],
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const unsigned char *input,
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unsigned char *output )
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{
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mbedtls_aes_xts_context *xts_ctx = ctx;
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int mode;
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switch( operation )
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{
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case MBEDTLS_ENCRYPT:
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mode = MBEDTLS_AES_ENCRYPT;
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break;
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case MBEDTLS_DECRYPT:
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mode = MBEDTLS_AES_DECRYPT;
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break;
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default:
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return MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA;
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}
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return mbedtls_aes_crypt_xts( xts_ctx, mode, length,
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data_unit, input, output );
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}
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#endif /* MBEDTLS_CIPHER_MODE_XTS */
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static int aes_setkey_dec_wrap( void *ctx, const unsigned char *key,
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unsigned int key_bitlen )
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{
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@ -206,6 +233,9 @@ static const mbedtls_cipher_base_t aes_info = {
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#if defined(MBEDTLS_CIPHER_MODE_CTR)
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aes_crypt_ctr_wrap,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_XTS)
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NULL,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_STREAM)
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NULL,
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#endif
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@ -388,6 +418,92 @@ static const mbedtls_cipher_info_t aes_256_ctr_info = {
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};
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#endif /* MBEDTLS_CIPHER_MODE_CTR */
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#if defined(MBEDTLS_CIPHER_MODE_XTS)
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static int xts_aes_setkey_enc_wrap( void *ctx, const unsigned char *key,
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unsigned int key_bitlen )
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{
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mbedtls_aes_xts_context *xts_ctx = ctx;
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return( mbedtls_aes_xts_setkey_enc( xts_ctx, key, key_bitlen ) );
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}
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static int xts_aes_setkey_dec_wrap( void *ctx, const unsigned char *key,
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unsigned int key_bitlen )
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{
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mbedtls_aes_xts_context *xts_ctx = ctx;
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return( mbedtls_aes_xts_setkey_dec( xts_ctx, key, key_bitlen ) );
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}
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static void *xts_aes_ctx_alloc( void )
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{
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mbedtls_aes_xts_context *xts_ctx = mbedtls_calloc( 1, sizeof( *xts_ctx ) );
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if( xts_ctx != NULL )
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mbedtls_aes_xts_init( xts_ctx );
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return( xts_ctx );
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}
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static void xts_aes_ctx_free( void *ctx )
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{
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mbedtls_aes_xts_context *xts_ctx = ctx;
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if( xts_ctx == NULL )
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return;
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mbedtls_aes_xts_free( xts_ctx );
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mbedtls_free( xts_ctx );
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}
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static const mbedtls_cipher_base_t xts_aes_info = {
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MBEDTLS_CIPHER_ID_AES,
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NULL,
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#if defined(MBEDTLS_CIPHER_MODE_CBC)
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NULL,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_CFB)
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NULL,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_OFB)
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NULL,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_CTR)
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NULL,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_XTS)
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aes_crypt_xts_wrap,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_STREAM)
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NULL,
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#endif
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xts_aes_setkey_enc_wrap,
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xts_aes_setkey_dec_wrap,
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xts_aes_ctx_alloc,
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xts_aes_ctx_free
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};
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static const mbedtls_cipher_info_t aes_128_xts_info = {
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MBEDTLS_CIPHER_AES_128_XTS,
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MBEDTLS_MODE_XTS,
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256,
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"AES-128-XTS",
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16,
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0,
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16,
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&xts_aes_info
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};
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static const mbedtls_cipher_info_t aes_256_xts_info = {
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MBEDTLS_CIPHER_AES_256_XTS,
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MBEDTLS_MODE_XTS,
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512,
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"AES-256-XTS",
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16,
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0,
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16,
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&xts_aes_info
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};
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#endif /* MBEDTLS_CIPHER_MODE_XTS */
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#if defined(MBEDTLS_GCM_C)
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static int gcm_aes_setkey_wrap( void *ctx, const unsigned char *key,
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unsigned int key_bitlen )
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@ -411,6 +527,9 @@ static const mbedtls_cipher_base_t gcm_aes_info = {
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#if defined(MBEDTLS_CIPHER_MODE_CTR)
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NULL,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_XTS)
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NULL,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_STREAM)
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NULL,
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#endif
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@ -477,6 +596,9 @@ static const mbedtls_cipher_base_t ccm_aes_info = {
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#if defined(MBEDTLS_CIPHER_MODE_CTR)
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NULL,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_XTS)
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NULL,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_STREAM)
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NULL,
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#endif
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@ -607,6 +729,9 @@ static const mbedtls_cipher_base_t camellia_info = {
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#if defined(MBEDTLS_CIPHER_MODE_CTR)
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camellia_crypt_ctr_wrap,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_XTS)
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NULL,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_STREAM)
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NULL,
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#endif
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@ -777,6 +902,9 @@ static const mbedtls_cipher_base_t gcm_camellia_info = {
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#if defined(MBEDTLS_CIPHER_MODE_CTR)
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NULL,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_XTS)
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NULL,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_STREAM)
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NULL,
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#endif
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@ -843,6 +971,9 @@ static const mbedtls_cipher_base_t ccm_camellia_info = {
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#if defined(MBEDTLS_CIPHER_MODE_CTR)
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NULL,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_XTS)
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NULL,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_STREAM)
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NULL,
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#endif
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@ -974,6 +1105,9 @@ static const mbedtls_cipher_base_t aria_info = {
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#if defined(MBEDTLS_CIPHER_MODE_CTR)
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aria_crypt_ctr_wrap,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_XTS)
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NULL,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_STREAM)
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NULL,
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#endif
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@ -1144,6 +1278,9 @@ static const mbedtls_cipher_base_t gcm_aria_info = {
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#if defined(MBEDTLS_CIPHER_MODE_CTR)
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NULL,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_XTS)
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NULL,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_STREAM)
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NULL,
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#endif
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@ -1210,6 +1347,9 @@ static const mbedtls_cipher_base_t ccm_aria_info = {
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#if defined(MBEDTLS_CIPHER_MODE_CTR)
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NULL,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_XTS)
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NULL,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_STREAM)
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NULL,
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#endif
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@ -1389,6 +1529,9 @@ static const mbedtls_cipher_base_t des_info = {
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#if defined(MBEDTLS_CIPHER_MODE_CTR)
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NULL,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_XTS)
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NULL,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_STREAM)
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NULL,
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#endif
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@ -1437,6 +1580,9 @@ static const mbedtls_cipher_base_t des_ede_info = {
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#if defined(MBEDTLS_CIPHER_MODE_CTR)
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NULL,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_XTS)
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NULL,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_STREAM)
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NULL,
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#endif
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@ -1485,6 +1631,9 @@ static const mbedtls_cipher_base_t des_ede3_info = {
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#if defined(MBEDTLS_CIPHER_MODE_CTR)
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NULL,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_XTS)
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NULL,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_STREAM)
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NULL,
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#endif
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@ -1597,6 +1746,9 @@ static const mbedtls_cipher_base_t blowfish_info = {
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#if defined(MBEDTLS_CIPHER_MODE_CTR)
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blowfish_crypt_ctr_wrap,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_XTS)
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NULL,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_STREAM)
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NULL,
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#endif
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@ -1710,6 +1862,9 @@ static const mbedtls_cipher_base_t arc4_base_info = {
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#if defined(MBEDTLS_CIPHER_MODE_CTR)
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NULL,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_XTS)
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NULL,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_STREAM)
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arc4_crypt_stream_wrap,
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#endif
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@ -1776,6 +1931,9 @@ static const mbedtls_cipher_base_t null_base_info = {
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#if defined(MBEDTLS_CIPHER_MODE_CTR)
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NULL,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_XTS)
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NULL,
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_STREAM)
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null_crypt_stream,
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#endif
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@ -1823,6 +1981,10 @@ const mbedtls_cipher_definition_t mbedtls_cipher_definitions[] =
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{ MBEDTLS_CIPHER_AES_192_CTR, &aes_192_ctr_info },
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{ MBEDTLS_CIPHER_AES_256_CTR, &aes_256_ctr_info },
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#endif
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#if defined(MBEDTLS_CIPHER_MODE_XTS)
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{ MBEDTLS_CIPHER_AES_128_XTS, &aes_128_xts_info },
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{ MBEDTLS_CIPHER_AES_256_XTS, &aes_256_xts_info },
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#endif
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#if defined(MBEDTLS_GCM_C)
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{ MBEDTLS_CIPHER_AES_128_GCM, &aes_128_gcm_info },
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{ MBEDTLS_CIPHER_AES_192_GCM, &aes_192_gcm_info },
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@ -786,6 +786,70 @@ AES-256 OFB - Encrypt and decrypt 32 bytes in multiple parts 1
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depends_on:MBEDTLS_AES_C:MBEDTLS_CIPHER_MODE_OFB
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enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_256_OFB:256:16:16:-1:16:16:16:16
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AES-128 XTS - Encrypt and decrypt 16 bytes
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depends_on:MBEDTLS_AES_C:MBEDTLS_CIPHER_MODE_XTS
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enc_dec_buf:MBEDTLS_CIPHER_AES_128_XTS:"AES-128-XTS":256:16:-1
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AES-128 XTS - Encrypt and decrypt 17 bytes
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depends_on:MBEDTLS_AES_C:MBEDTLS_CIPHER_MODE_XTS
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enc_dec_buf:MBEDTLS_CIPHER_AES_128_XTS:"AES-128-XTS":256:17:-1
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AES-128 XTS - Encrypt and decrypt 31 bytes
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depends_on:MBEDTLS_AES_C:MBEDTLS_CIPHER_MODE_XTS
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enc_dec_buf:MBEDTLS_CIPHER_AES_128_XTS:"AES-128-XTS":256:31:-1
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AES-128 XTS - Encrypt and decrypt 32 bytes
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depends_on:MBEDTLS_AES_C:MBEDTLS_CIPHER_MODE_XTS
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enc_dec_buf:MBEDTLS_CIPHER_AES_128_XTS:"AES-128-XTS":256:32:-1
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AES-128 XTS - Encrypt and decrypt 33 bytes
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depends_on:MBEDTLS_AES_C:MBEDTLS_CIPHER_MODE_XTS
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enc_dec_buf:MBEDTLS_CIPHER_AES_128_XTS:"AES-128-XTS":256:33:-1
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AES-128 XTS - Encrypt and decrypt 47 bytes
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depends_on:MBEDTLS_AES_C:MBEDTLS_CIPHER_MODE_XTS
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enc_dec_buf:MBEDTLS_CIPHER_AES_128_XTS:"AES-128-XTS":256:47:-1
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AES-128 XTS - Encrypt and decrypt 48 bytes
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depends_on:MBEDTLS_AES_C:MBEDTLS_CIPHER_MODE_XTS
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enc_dec_buf:MBEDTLS_CIPHER_AES_128_XTS:"AES-128-XTS":256:48:-1
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AES-128 XTS - Encrypt and decrypt 49 bytes
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depends_on:MBEDTLS_AES_C:MBEDTLS_CIPHER_MODE_XTS
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enc_dec_buf:MBEDTLS_CIPHER_AES_128_XTS:"AES-128-XTS":256:49:-1
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AES-256 XTS - Encrypt and decrypt 16 bytes
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depends_on:MBEDTLS_AES_C:MBEDTLS_CIPHER_MODE_XTS
|
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enc_dec_buf:MBEDTLS_CIPHER_AES_256_XTS:"AES-256-XTS":512:16:-1
|
||||
|
||||
AES-256 XTS - Encrypt and decrypt 17 bytes
|
||||
depends_on:MBEDTLS_AES_C:MBEDTLS_CIPHER_MODE_XTS
|
||||
enc_dec_buf:MBEDTLS_CIPHER_AES_256_XTS:"AES-256-XTS":512:17:-1
|
||||
|
||||
AES-256 XTS - Encrypt and decrypt 31 bytes
|
||||
depends_on:MBEDTLS_AES_C:MBEDTLS_CIPHER_MODE_XTS
|
||||
enc_dec_buf:MBEDTLS_CIPHER_AES_256_XTS:"AES-256-XTS":512:31:-1
|
||||
|
||||
AES-256 XTS - Encrypt and decrypt 32 bytes
|
||||
depends_on:MBEDTLS_AES_C:MBEDTLS_CIPHER_MODE_XTS
|
||||
enc_dec_buf:MBEDTLS_CIPHER_AES_256_XTS:"AES-256-XTS":512:32:-1
|
||||
|
||||
AES-256 XTS - Encrypt and decrypt 33 bytes
|
||||
depends_on:MBEDTLS_AES_C:MBEDTLS_CIPHER_MODE_XTS
|
||||
enc_dec_buf:MBEDTLS_CIPHER_AES_256_XTS:"AES-256-XTS":512:33:-1
|
||||
|
||||
AES-256 XTS - Encrypt and decrypt 47 bytes
|
||||
depends_on:MBEDTLS_AES_C:MBEDTLS_CIPHER_MODE_XTS
|
||||
enc_dec_buf:MBEDTLS_CIPHER_AES_256_XTS:"AES-256-XTS":512:47:-1
|
||||
|
||||
AES-256 XTS - Encrypt and decrypt 48 bytes
|
||||
depends_on:MBEDTLS_AES_C:MBEDTLS_CIPHER_MODE_XTS
|
||||
enc_dec_buf:MBEDTLS_CIPHER_AES_256_XTS:"AES-256-XTS":512:48:-1
|
||||
|
||||
AES-256 XTS - Encrypt and decrypt 49 bytes
|
||||
depends_on:MBEDTLS_AES_C:MBEDTLS_CIPHER_MODE_XTS
|
||||
enc_dec_buf:MBEDTLS_CIPHER_AES_256_XTS:"AES-256-XTS":512:49:-1
|
||||
|
||||
AES-128 CTR - Encrypt and decrypt 0 bytes
|
||||
depends_on:MBEDTLS_AES_C:MBEDTLS_CIPHER_MODE_CTR
|
||||
enc_dec_buf:MBEDTLS_CIPHER_AES_128_CTR:"AES-128-CTR":128:0:-1
|
||||
|
|
|
|||
Loading…
Reference in a new issue