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/**
* \file
* \author Egor Tensin <Egor.Tensin@gmail.com>
* \date 2015
* \copyright This file is licensed under the terms of the MIT License.
* See LICENSE.txt for details.
*/
#include <aesni/all.h>
static AesNI_StatusCode aesni_box_xor_state_aes(
AesNI_State* dest,
const AesNI_State* src,
AesNI_ErrorDetails* err_details)
{
dest->aes_block = _mm_xor_si128(dest->aes_block, src->aes_block);
return AESNI_SUCCESS;
}
static AesNI_StatusCode aesni_box_encrypt_aes128(
const AesNI_State* input,
const AesNI_EncryptionParams* params,
AesNI_State* output,
AesNI_ErrorDetails* err_details)
{
output->aes_block = aesni_raw_encrypt_block128(
input->aes_block,
¶ms->aes128_key_schedule);
return AESNI_SUCCESS;
}
static AesNI_StatusCode aesni_box_decrypt_aes128(
const AesNI_State* input,
const AesNI_DecryptionParams* params,
AesNI_State* output,
AesNI_ErrorDetails* err_details)
{
output->aes_block = aesni_raw_decrypt_block128(
input->aes_block,
¶ms->aes128_key_schedule);
return AESNI_SUCCESS;
}
static AesNI_StatusCode aesni_box_encrypt_aes192(
const AesNI_State* input,
const AesNI_EncryptionParams* params,
AesNI_State* output,
AesNI_ErrorDetails* err_details)
{
output->aes_block = aesni_raw_encrypt_block192(
input->aes_block,
¶ms->aes192_key_schedule);
return AESNI_SUCCESS;
}
static AesNI_StatusCode aesni_box_decrypt_aes192(
const AesNI_State* input,
const AesNI_DecryptionParams* params,
AesNI_State* output,
AesNI_ErrorDetails* err_details)
{
output->aes_block = aesni_raw_decrypt_block192(
input->aes_block,
¶ms->aes192_key_schedule);
return AESNI_SUCCESS;
}
static AesNI_StatusCode aesni_box_encrypt_aes256(
const AesNI_State* input,
const AesNI_EncryptionParams* params,
AesNI_State* output,
AesNI_ErrorDetails* err_details)
{
output->aes_block = aesni_raw_encrypt_block256(
input->aes_block,
¶ms->aes256_key_schedule);
return AESNI_SUCCESS;
}
static AesNI_StatusCode aesni_box_decrypt_aes256(
const AesNI_State* input,
const AesNI_DecryptionParams* params,
AesNI_State* output,
AesNI_ErrorDetails* err_details)
{
output->aes_block = aesni_raw_decrypt_block256(
input->aes_block,
¶ms->aes256_key_schedule);
return AESNI_SUCCESS;
}
typedef AesNI_StatusCode (*AesNI_BoxEncrypt)(
const AesNI_State*,
const AesNI_EncryptionParams* params,
AesNI_State* output,
AesNI_ErrorDetails* err_details);
static AesNI_BoxEncrypt aesni_box_encrypt_algorithm[] =
{
&aesni_box_encrypt_aes128,
&aesni_box_encrypt_aes192,
&aesni_box_encrypt_aes256,
};
typedef AesNI_StatusCode (*AesNI_BoxDecrypt)(
const AesNI_State*,
const AesNI_DecryptionParams* params,
AesNI_State* output,
AesNI_ErrorDetails* err_details);
static AesNI_BoxDecrypt aesni_box_decrypt_algorithm[] =
{
&aesni_box_decrypt_aes128,
&aesni_box_decrypt_aes192,
&aesni_box_decrypt_aes256,
};
typedef AesNI_StatusCode (*AesNI_BoxXorState)(
AesNI_State*,
const AesNI_State*,
AesNI_ErrorDetails*);
static AesNI_BoxXorState aesni_box_xor_state[] =
{
&aesni_box_xor_state_aes,
&aesni_box_xor_state_aes,
&aesni_box_xor_state_aes,
};
static AesNI_StatusCode aesni_box_init_aes128(
AesNI_Box* box,
const AesNI_AlgorithmParams* algorithm_params,
AesNI_ErrorDetails* err_details)
{
aesni_raw_expand_key_schedule128(
algorithm_params->aes128_key,
&box->encrypt_params.aes128_key_schedule);
aesni_raw_invert_key_schedule128(
&box->encrypt_params.aes128_key_schedule,
&box->decrypt_params.aes128_key_schedule);
return AESNI_SUCCESS;
}
static AesNI_StatusCode aesni_box_init_aes192(
AesNI_Box* box,
const AesNI_AlgorithmParams* algorithm_params,
AesNI_ErrorDetails* err_details)
{
aesni_raw_expand_key_schedule192(
algorithm_params->aes192_key.lo,
algorithm_params->aes192_key.hi,
&box->encrypt_params.aes192_key_schedule);
aesni_raw_invert_key_schedule192(
&box->encrypt_params.aes192_key_schedule,
&box->decrypt_params.aes192_key_schedule);
return AESNI_SUCCESS;
}
static AesNI_StatusCode aesni_box_init_aes256(
AesNI_Box* box,
const AesNI_AlgorithmParams* algorithm_params,
AesNI_ErrorDetails* err_details)
{
aesni_raw_expand_key_schedule256(
algorithm_params->aes256_key.lo,
algorithm_params->aes256_key.hi,
&box->encrypt_params.aes256_key_schedule);
aesni_raw_invert_key_schedule256(
&box->encrypt_params.aes256_key_schedule,
&box->decrypt_params.aes256_key_schedule);
return AESNI_SUCCESS;
}
typedef AesNI_StatusCode (*AesNI_BoxInitializeAlgorithm)(
AesNI_Box*,
const AesNI_AlgorithmParams*,
AesNI_ErrorDetails*);
static AesNI_BoxInitializeAlgorithm aesni_box_init_algorithm[] =
{
&aesni_box_init_aes128,
&aesni_box_init_aes192,
&aesni_box_init_aes256,
};
AesNI_StatusCode aesni_box_init(
AesNI_Box* box,
AesNI_Algorithm algorithm,
const AesNI_AlgorithmParams* algorithm_params,
AesNI_Mode mode,
const AesNI_State* iv,
AesNI_ErrorDetails* err_details)
{
AesNI_StatusCode status = AESNI_SUCCESS;
box->algorithm = algorithm;
if (aesni_is_error(status = aesni_box_init_algorithm[algorithm](box, algorithm_params, err_details)))
return status;
box->mode = mode;
if (iv != NULL)
box->iv = *iv;
return status;
}
static AesNI_StatusCode aesni_box_encrypt_ecb(
AesNI_Box* box,
const AesNI_State* input,
AesNI_State* output,
AesNI_ErrorDetails* err_details)
{
return aesni_box_encrypt_algorithm[box->algorithm](
input,
&box->encrypt_params,
output,
err_details);
}
static AesNI_StatusCode aesni_box_encrypt_cbc(
AesNI_Box* box,
const AesNI_State* input,
AesNI_State* output,
AesNI_ErrorDetails* err_details)
{
AesNI_StatusCode status = AESNI_SUCCESS;
AesNI_State xored_input = *input;
status = aesni_box_xor_state[box->algorithm](
&xored_input,
&box->iv,
err_details);
if (aesni_is_error(status))
return status;
status = aesni_box_encrypt_algorithm[box->algorithm](
&xored_input,
&box->encrypt_params,
output,
err_details);
if (aesni_is_error(status))
return status;
box->iv = *output;
return status;
}
static AesNI_StatusCode aesni_box_encrypt_cfb(
AesNI_Box* box,
const AesNI_State* input,
AesNI_State* output,
AesNI_ErrorDetails* err_details)
{
AesNI_StatusCode status = aesni_box_encrypt_algorithm[box->algorithm](
&box->iv,
&box->encrypt_params,
output,
err_details);
if (aesni_is_error(status))
return status;
status = aesni_box_xor_state[box->algorithm](output, input, err_details);
if (aesni_is_error(status))
return status;
box->iv = *output;
return status;
}
static AesNI_StatusCode aesni_box_encrypt_ofb(
AesNI_Box* box,
const AesNI_State* input,
AesNI_State* output,
AesNI_ErrorDetails* err_details)
{
AesNI_StatusCode status = aesni_box_encrypt_algorithm[box->algorithm](
&box->iv,
&box->encrypt_params,
&box->iv,
err_details);
if (aesni_is_error(status))
return status;
*output = box->iv;
status = aesni_box_xor_state[box->algorithm](output, input, err_details);
if (aesni_is_error(status))
return status;
return status;
}
static AesNI_StatusCode aesni_box_encrypt_ctr(
AesNI_Box* box,
const AesNI_State* input,
AesNI_State* output,
AesNI_ErrorDetails* err_details)
{
return aesni_error_not_implemented(err_details);
}
typedef AesNI_StatusCode (*AesNI_BoxEncryptMode)(
AesNI_Box*,
const AesNI_State*,
AesNI_State*,
AesNI_ErrorDetails*);
static AesNI_BoxEncryptMode aesni_box_encrypt_mode[] =
{
&aesni_box_encrypt_ecb,
&aesni_box_encrypt_cbc,
&aesni_box_encrypt_cfb,
&aesni_box_encrypt_ofb,
&aesni_box_encrypt_ctr,
};
AesNI_StatusCode aesni_box_encrypt(
AesNI_Box* box,
const AesNI_State* input,
AesNI_State* output,
AesNI_ErrorDetails* err_details)
{
return aesni_box_encrypt_mode[box->mode](box, input, output, err_details);
}
static AesNI_StatusCode aesni_box_decrypt_ecb(
AesNI_Box* box,
const AesNI_State* input,
AesNI_State* output,
AesNI_ErrorDetails* err_details)
{
return aesni_box_decrypt_algorithm[box->algorithm](
input,
&box->decrypt_params,
output,
err_details);
}
static AesNI_StatusCode aesni_box_decrypt_cbc(
AesNI_Box* box,
const AesNI_State* input,
AesNI_State* output,
AesNI_ErrorDetails* err_details)
{
AesNI_StatusCode status = aesni_box_decrypt_algorithm[box->algorithm](
input,
&box->decrypt_params,
output,
err_details);
if (aesni_is_error(status))
return status;
status = aesni_box_xor_state[box->algorithm](
output,
&box->iv,
err_details);
if (aesni_is_error(status))
return status;
box->iv = *input;
return status;
}
static AesNI_StatusCode aesni_box_decrypt_cfb(
AesNI_Box* box,
const AesNI_State* input,
AesNI_State* output,
AesNI_ErrorDetails* err_details)
{
AesNI_StatusCode status = aesni_box_encrypt_algorithm[box->algorithm](
&box->iv,
&box->encrypt_params,
output,
err_details);
if (aesni_is_error(status))
return status;
status = aesni_box_xor_state[box->algorithm](
output,
input,
err_details);
if (aesni_is_error(status))
return status;
box->iv = *input;
return status;
}
static AesNI_StatusCode aesni_box_decrypt_ofb(
AesNI_Box* box,
const AesNI_State* input,
AesNI_State* output,
AesNI_ErrorDetails* err_details)
{
AesNI_StatusCode status = aesni_box_encrypt_algorithm[box->algorithm](
&box->iv,
&box->encrypt_params,
output,
err_details);
if (aesni_is_error(status))
return status;
box->iv = *output;
status = aesni_box_xor_state[box->algorithm](
output,
input,
err_details);
if (aesni_is_error(status))
return status;
return status;
}
static AesNI_StatusCode aesni_box_decrypt_ctr(
AesNI_Box* box,
const AesNI_State* input,
AesNI_State* output,
AesNI_ErrorDetails* err_details)
{
return aesni_error_not_implemented(err_details);
}
typedef AesNI_BoxEncryptMode AesNI_BoxDecryptMode;
static AesNI_BoxDecryptMode aesni_box_decrypt_mode[] =
{
&aesni_box_decrypt_ecb,
&aesni_box_decrypt_cbc,
&aesni_box_decrypt_cfb,
&aesni_box_decrypt_ofb,
&aesni_box_decrypt_ctr,
};
AesNI_StatusCode aesni_box_decrypt(
AesNI_Box* box,
const AesNI_State* input,
AesNI_State* output,
AesNI_ErrorDetails* err_details)
{
return aesni_box_decrypt_mode[box->mode](box, input, output, err_details);
}
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