/**
 * @file crypt/md5.h
 * @brief DI-net MD5 implementation used by HMAC-MD5
 * @date 7 January 2015
 * @author ing. R.W.A. van der Heijden
 * @copyright 2015 Dual Inventive B.V.
 *
 * Implementation of the MD5 hash algorithm as described in RFC 1321
 */
#ifndef DI_CRYPT_MD5_H_
#define DI_CRYPT_MD5_H_

#define DI_CRYPT_MD5_HASH_BITS  128
#define DI_CRYPT_MD5_HASH_BYTES (DI_CRYPT_MD5_HASH_BITS / 8)
#define DI_CRYPT_MD5_BLOCK_BITS 512
#define DI_CRYPT_MD5_BLOCK_BYTES (DI_CRYPT_MD5_BLOCK_BITS / 8)

struct di_crypt_md5_ctx {
	uint32_t a[4];
	uint32_t counter;
};

void di_crypt_md5_init(struct di_crypt_md5_ctx *s);
void di_crypt_md5_next_block(struct di_crypt_md5_ctx *state, const void *block);
void di_crypt_md5_last_block(struct di_crypt_md5_ctx *state, const void *block, uint16_t length);
void di_crypt_md5_ctx2hash(uint8_t *digest, const struct di_crypt_md5_ctx *state);
void di_crypt_md5(const void *msg, size_t length, uint8_t *digest);

#endif /* DI_CRYPT_MD5_H_ */