c-multihash/include/mh/hashes.h

#pragma once

#include "errors.h"

// definitions of hash functions
#define MH_H_SHA1 0x11
#define MH_H_SHA2_256 0x12
#define MH_H_SHA2_512 0x13
#define MH_H_SHA3_512 0x14
#define MH_H_SHA3_384 0x15
#define MH_H_SHA3_256 0x16
#define MH_H_SHA3_224 0x17
#define MH_H_SHAKE_128 0x18
#define MH_H_SHAKE_256 0x19
#define MH_H_BLAKE2B 0x40
#define MH_H_BLAKE2S 0x41


// list of avaliable hash functions.
static const int mh_all_hashes[] = {
	MH_H_SHA1,
	MH_H_SHA2_256,
	MH_H_SHA2_512,
	MH_H_SHA3_512,
	MH_H_SHA3_384,
	MH_H_SHA3_256,
	MH_H_SHA3_224,
	MH_H_SHAKE_128,
	MH_H_SHAKE_256,
	MH_H_BLAKE2B,
	MH_H_BLAKE2S,
};

#define MH_H_COUNT (int)(sizeof(mh_all_hashes) / sizeof(mh_all_hashes[0]))

/**
 * Given the id, return the hash name
 * @param hash the id (such as MH_H_SHA1)
 * @returns the name as text, such as "sha1"
 */
const char *mh_hash_name(int hash);

/**
 * Given the id, return the default length
 * @param hash the id
 * @returns the default length of that hash
 */
int mh_hash_default_length(int hash);