lcx_aes_siv.h

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/* @BANNER@ */
 
#if defined(HAVE_AES_SIV)
 
#ifndef LCX_AES_SIV_H
#define LCX_AES_SIV_H
 
#include "lcx_cipher.h"
 
#define AES_SIV_MAX_KEY_LEN (32)
#define AES_SIV_KEY_NUMBER  (2)
#define AES_SIV_TAG_LEN     (16)
 
typedef struct _cx_aes_siv_context {
    uint8_t        key1[AES_SIV_MAX_KEY_LEN];     
    uint8_t        key2[AES_SIV_MAX_KEY_LEN];     
    size_t         key_len;                       
    uint8_t        tag_state[CX_AES_BLOCK_SIZE];  
    cx_cipher_id_t cipher_type;                   
    uint32_t       mode;                          
    cx_cipher_context_t
        *cipher_ctx;  
 
} cx_aes_siv_context_t;
 
WARN_UNUSED_RESULT cx_err_t cx_aes_siv_init(cx_aes_siv_context_t *ctx);
 
WARN_UNUSED_RESULT cx_err_t cx_aes_siv_set_key(cx_aes_siv_context_t *ctx,
                                               const uint8_t        *key,
                                               size_t                key_bitlen);
 
WARN_UNUSED_RESULT cx_err_t cx_aes_siv_start(cx_aes_siv_context_t *ctx,
                                             uint32_t              mode,
                                             const uint8_t        *iv,
                                             size_t                iv_len);
 
WARN_UNUSED_RESULT cx_err_t cx_aes_siv_update_aad(cx_aes_siv_context_t *ctx,
                                                  const uint8_t        *aad,
                                                  size_t                aad_len);
 
cx_err_t cx_aes_siv_update_mac(cx_aes_siv_context_t *ctx, const uint8_t *input, size_t in_len);
 
WARN_UNUSED_RESULT cx_err_t cx_aes_siv_update(cx_aes_siv_context_t *ctx,
                                              const uint8_t        *input,
                                              uint8_t              *output,
                                              size_t                len);
 
WARN_UNUSED_RESULT cx_err_t cx_aes_siv_finish(cx_aes_siv_context_t *ctx,
                                              const uint8_t        *input,
                                              size_t                in_len,
                                              uint8_t              *tag);
 
WARN_UNUSED_RESULT cx_err_t cx_aes_siv_encrypt(cx_aes_siv_context_t *ctx,
                                               const uint8_t        *input,
                                               size_t                in_len,
                                               const uint8_t        *aad,
                                               size_t                aad_len,
                                               uint8_t              *output,
                                               uint8_t              *tag);
 
WARN_UNUSED_RESULT cx_err_t cx_aes_siv_decrypt(cx_aes_siv_context_t *ctx,
                                               const uint8_t        *input,
                                               size_t                in_len,
                                               const uint8_t        *aad,
                                               size_t                aad_len,
                                               uint8_t              *output,
                                               uint8_t              *tag);
 
#endif /* LCX_AES_SIV_H */
 
#endif  // HAVE_AES_SIV