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 /*

  * Copyright (C) 2021 Southern Storm Software, Pty Ltd.

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  * The above copyright notice and this permission notice shall be included

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  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

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 #ifndef LW_INTERNAL_GIFT128_M_H

 #define LW_INTERNAL_GIFT128_M_H


 #include "internal-masking.h"

 #include "internal-gift128-config.h"


 #ifdef __cplusplus

 extern "C" {

 #endif


 #define GIFT128_MASKED_BLOCK_SIZE 16


 #if GIFT128_VARIANT == GIFT128_VARIANT_TINY

 #define GIFT128_MASKED_ROUND_KEYS 4

 #elif GIFT128_VARIANT == GIFT128_VARIANT_SMALL

 #define GIFT128_MASKED_ROUND_KEYS 20

 #else

 #define GIFT128_MASKED_ROUND_KEYS 80

 #endif


 typedef struct

 {

     mask_uint32_t k[GIFT128_MASKED_ROUND_KEYS];


 } gift128b_masked_key_schedule_t;


 void gift128b_init_masked

     (gift128b_masked_key_schedule_t *ks, const unsigned char *key);


 void gift128b_encrypt_preloaded_masked

     (const gift128b_masked_key_schedule_t *ks, mask_uint32_t output[4],

      const mask_uint32_t input[4]);


 void gift128b_decrypt_preloaded_masked

     (const gift128b_masked_key_schedule_t *ks, mask_uint32_t output[4],

      const mask_uint32_t input[4]);


 #ifdef __cplusplus

 }

 #endif


 #endif

gift128b_decrypt_preloaded_masked
void gift128b_decrypt_preloaded_masked(const gift128b_masked_key_schedule_t *ks, mask_uint32_t output[4], const mask_uint32_t input[4])
Decrypts a block with masked GIFT-128 (bit-sliced and pre-loaded).
Definition: internal-gift128-m.c:872

GIFT128_MASKED_ROUND_KEYS
#define GIFT128_MASKED_ROUND_KEYS
Number of round keys for the GIFT-128 key schedule.
Definition: internal-gift128-m.h:52

gift128b_init_masked
void gift128b_init_masked(gift128b_masked_key_schedule_t *ks, const unsigned char *key)
Initializes the key schedule for masked GIFT-128 (bit-sliced).
Definition: internal-gift128-m.c:327

internal-masking.h
Utilities that help to implement masked ciphers.

mask_x4_uint32_t
Masked 32-bit word with four shares.
Definition: internal-masking.h:152

internal-gift128-config.h
Configures the variant of GIFT-128 to use.

gift128b_masked_key_schedule_t
Structure of the key schedule for masked GIFT-128 (bit-sliced).
Definition: internal-gift128-m.h:58

gift128b_encrypt_preloaded_masked
void gift128b_encrypt_preloaded_masked(const gift128b_masked_key_schedule_t *ks, mask_uint32_t output[4], const mask_uint32_t input[4])
Encrypts a block with masked GIFT-128 (bit-sliced and pre-loaded).
Definition: internal-gift128-m.c:780