[authen-passphrase-scrypt.git] / scrypt-1.2.1 / libcperciva / crypto / crypto_aesctr.h

#ifndef _CRYPTO_AESCTR_H_
#define _CRYPTO_AESCTR_H_

#include <stddef.h>
#include <stdint.h>

/* Opaque types. */
struct crypto_aes_key;
struct crypto_aesctr;

/**
 * crypto_aesctr_init(key, nonce):
 * Prepare to encrypt/decrypt data with AES in CTR mode, using the provided
 * expanded key and nonce.  The key provided must remain valid for the
 * lifetime of the stream.
 */
struct crypto_aesctr * crypto_aesctr_init(const struct crypto_aes_key *,
    uint64_t);

/**
 * crypto_aesctr_stream(stream, inbuf, outbuf, buflen):
 * Generate the next ${buflen} bytes of the AES-CTR stream and xor them with
 * bytes from ${inbuf}, writing the result into ${outbuf}.  If the buffers
 * ${inbuf} and ${outbuf} overlap, they must be identical.
 */
void crypto_aesctr_stream(struct crypto_aesctr *, const uint8_t *,
    uint8_t *, size_t);

/**
 * crypto_aesctr_free(stream):
 * Free the provided stream object.
 */
void crypto_aesctr_free(struct crypto_aesctr *);

/**
 * crypto_aesctr_buf(key, nonce, inbuf, outbuf, buflen):
 * Equivalent to _init(key, nonce); _stream(inbuf, outbuf, buflen); _free().
 */
void crypto_aesctr_buf(const struct crypto_aes_key *, uint64_t,
    const uint8_t *, uint8_t *, size_t);

#endif /* !_CRYPTO_AESCTR_H_ */
Commit	Line	Data
0c1f3509 MG	1	#ifndef _CRYPTO_AESCTR_H_
	2	#define _CRYPTO_AESCTR_H_
	3
	4	#include <stddef.h>
	5	#include <stdint.h>
	6
	7	/* Opaque types. */
	8	struct crypto_aes_key;
	9	struct crypto_aesctr;
	10
	11	/**
	12	* crypto_aesctr_init(key, nonce):
	13	* Prepare to encrypt/decrypt data with AES in CTR mode, using the provided
	14	* expanded key and nonce. The key provided must remain valid for the
	15	* lifetime of the stream.
	16	*/
	17	struct crypto_aesctr * crypto_aesctr_init(const struct crypto_aes_key *,
	18	uint64_t);
	19
	20	/**
	21	* crypto_aesctr_stream(stream, inbuf, outbuf, buflen):
	22	* Generate the next ${buflen} bytes of the AES-CTR stream and xor them with
	23	* bytes from ${inbuf}, writing the result into ${outbuf}. If the buffers
	24	* ${inbuf} and ${outbuf} overlap, they must be identical.
	25	*/
	26	void crypto_aesctr_stream(struct crypto_aesctr , const uint8_t ,
	27	uint8_t *, size_t);
	28
	29	/**
	30	* crypto_aesctr_free(stream):
	31	* Free the provided stream object.
	32	*/
	33	void crypto_aesctr_free(struct crypto_aesctr *);
	34
	35	/**
	36	* crypto_aesctr_buf(key, nonce, inbuf, outbuf, buflen):
	37	* Equivalent to _init(key, nonce); _stream(inbuf, outbuf, buflen); _free().
	38	*/
	39	void crypto_aesctr_buf(const struct crypto_aes_key *, uint64_t,
	40	const uint8_t , uint8_t , size_t);
	41
	42	#endif /* !_CRYPTO_AESCTR_H_ */