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- /*
- * aes_icm.h
- *
- * Header for AES Integer Counter Mode.
- *
- * David A. McGrew
- * Cisco Systems, Inc.
- *
- */
- #ifndef AES_ICM_H
- #define AES_ICM_H
- #include "aes.h"
- #include "cipher.h"
- typedef struct {
- v128_t counter; /* holds the counter value */
- v128_t offset; /* initial offset value */
- v128_t keystream_buffer; /* buffers bytes of keystream */
- aes_expanded_key_t expanded_key; /* the cipher key */
- int bytes_in_buffer; /* number of unused bytes in buffer */
- } aes_icm_ctx_t;
- err_status_t
- aes_icm_context_init(aes_icm_ctx_t *c,
- const unsigned char *key,
- int key_len);
- err_status_t
- aes_icm_set_iv(aes_icm_ctx_t *c, void *iv, int direction);
- err_status_t
- aes_icm_encrypt(aes_icm_ctx_t *c,
- unsigned char *buf, unsigned int *bytes_to_encr);
- err_status_t
- aes_icm_output(aes_icm_ctx_t *c,
- unsigned char *buf, int bytes_to_output);
- err_status_t
- aes_icm_dealloc(cipher_t *c);
- err_status_t
- aes_icm_encrypt_ismacryp(aes_icm_ctx_t *c,
- unsigned char *buf,
- unsigned int *enc_len,
- int forIsmacryp);
- err_status_t
- aes_icm_alloc_ismacryp(cipher_t **c,
- int key_len,
- int forIsmacryp);
- uint16_t
- aes_icm_bytes_encrypted(aes_icm_ctx_t *c);
- #endif /* AES_ICM_H */
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