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aes: xts: Add new context structure

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Add a new context structure for XTS. Adjust the API for XTS to use the new
context structure, including tests suites and the benchmark program. Update
Doxgen documentation accordingly.
This commit is contained in:
Jaeden Amero
2018-05-29 18:55:17 +01:00
parent e22ba80e7b
commit 9366feb504
4 changed files with 214 additions and 57 deletions
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26
tests/suites/test_suite_aes.function
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@@ -161,20 +161,18 @@ void aes_encrypt_xts( char *hex_key_string, char *hex_iv_string,
unsigned char src_str[100] = { 0, };
unsigned char dst_str[100] = { 0, };
unsigned char output[100] = { 0, };
mbedtls_aes_context crypt_ctx, tweak_ctx;
mbedtls_aes_xts_context ctx;
int key_len, data_len;
mbedtls_aes_init( &crypt_ctx );
mbedtls_aes_init( &tweak_ctx );
mbedtls_aes_xts_init( &ctx );
key_len = unhexify( key_str, hex_key_string );
unhexify( iv_str, hex_iv_string );
data_len = unhexify( src_str, hex_src_string );
mbedtls_aes_setkey_enc( &crypt_ctx, key_str, ( key_len * 8 ) / 2 );
mbedtls_aes_setkey_enc( &tweak_ctx, key_str + key_len / 2, ( key_len * 8 ) / 2 );
mbedtls_aes_xts_setkey_enc( &ctx, key_str, key_len * 8 );
TEST_ASSERT( mbedtls_aes_crypt_xts( &crypt_ctx, &tweak_ctx, MBEDTLS_AES_ENCRYPT, data_unit_len, iv_str, src_str, output ) == xts_result );
TEST_ASSERT( mbedtls_aes_crypt_xts( &ctx, MBEDTLS_AES_ENCRYPT, data_unit_len, iv_str, src_str, output ) == xts_result );
if( xts_result == 0 )
{
hexify( dst_str, output, data_len );
@@ -183,8 +181,7 @@ void aes_encrypt_xts( char *hex_key_string, char *hex_iv_string,
}
exit:
mbedtls_aes_free( &crypt_ctx );
mbedtls_aes_free( &tweak_ctx );
mbedtls_aes_xts_free( &ctx );
}
/* END_CASE */
@@ -198,20 +195,18 @@ void aes_decrypt_xts( char *hex_key_string, char *hex_iv_string,
unsigned char src_str[100] = { 0, };
unsigned char dst_str[100] = { 0, };
unsigned char output[100] = { 0, };
mbedtls_aes_context crypt_ctx, tweak_ctx;
mbedtls_aes_xts_context ctx;
int key_len, data_len;
mbedtls_aes_init( &crypt_ctx );
mbedtls_aes_init( &tweak_ctx );
mbedtls_aes_xts_init( &ctx );
key_len = unhexify( key_str, hex_key_string );
unhexify( iv_str, hex_iv_string );
data_len = unhexify( src_str, hex_src_string );
mbedtls_aes_setkey_dec( &crypt_ctx, key_str, ( key_len * 8 ) / 2 );
mbedtls_aes_setkey_enc( &tweak_ctx, key_str + key_len / 2, ( key_len * 8 ) / 2 );
mbedtls_aes_xts_setkey_dec( &ctx, key_str, key_len * 8 );
TEST_ASSERT( mbedtls_aes_crypt_xts( &crypt_ctx, &tweak_ctx, MBEDTLS_AES_DECRYPT, data_unit_len, iv_str, src_str, output ) == xts_result );
TEST_ASSERT( mbedtls_aes_crypt_xts( &ctx, MBEDTLS_AES_DECRYPT, data_unit_len, iv_str, src_str, output ) == xts_result );
if( xts_result == 0 )
{
hexify( dst_str, output, data_len );
@@ -220,8 +215,7 @@ void aes_decrypt_xts( char *hex_key_string, char *hex_iv_string,
}
exit:
mbedtls_aes_free( &crypt_ctx );
mbedtls_aes_free( &tweak_ctx );
mbedtls_aes_xts_free( &ctx );
}
/* END_CASE */