#include <sys/types.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "../ncr.h"
#include "ncrypto.h"

int
ncr_key_params_init(ncr_key_params_t *params)
{
	ncr_key_params_t rv;

	if (!params) {
		errno = EINVAL;
		return -1;
	}
	if (!(rv = calloc(1, sizeof(*rv)))) {
		errno = ENOMEM;
		return -1;
	}
	*params = rv;
	return 0;
}

void
ncr_key_params_deinit(ncr_key_params_t params)
{
	if (params)
		free(params);
}

int
ncr_key_params_set_cipher_iv(ncr_key_params_t params, void* iv, unsigned int iv_size)
{
	if (!params) {
		errno = EINVAL;
		return -1;
	}
	if (iv_size > NCR_CIPHER_MAX_BLOCK_LEN) {
		errno = EOVERFLOW;
		return -1;
	}
	memmove(params->params.cipher.iv, iv, iv_size);
	params->params.cipher.iv_size = iv_size;
	return 0;
}

int
ncr_key_params_set_dh_pub(ncr_key_params_t params, void *pub, size_t pub_size)
{
	if (!params || !pub || !pub_size) {
		errno = EINVAL;
		return -1;
	}
	params->params.dh.pub = pub;
	params->params.dh.pub_size = pub_size;
	return 0;
}

int
ncr_key_params_set_rsa_type(ncr_key_params_t params, ncr_rsa_type_t type)
{
	if (!params) {
		errno = EINVAL;
		return -1;
	}
	params->params.rsa.type = type;
	return 0;
}

int
ncr_key_params_set_rsa_oaep_hash(ncr_key_params_t params,
				 ncr_algorithm_t oaep_hash)
{
	if (!params) {
		errno = EINVAL;
		return -1;
	}
	params->params.rsa.oaep_hash = oaep_hash;
	return 0;
}

int
ncr_key_params_set_rsa_sign_hash(ncr_key_params_t params,
				 ncr_algorithm_t sign_hash)
{
	if (!params) {
		errno = EINVAL;
		return -1;
	}
	params->params.rsa.sign_hash = sign_hash;
	return 0;
}

int
ncr_key_params_set_rsa_pss_salt(ncr_key_params_t params, unsigned int pss_salt)
{
	if (!params) {
		errno = EINVAL;
		return -1;
	}
	params->params.rsa.pss_salt = pss_salt;
	return 0;
}

int
ncr_key_params_set_dsa_sign_hash(ncr_key_params_t params,
				 ncr_algorithm_t sign_hash)
{
	if (!params) {
		errno = EINVAL;
		return -1;
	}
	params->params.dsa.sign_hash = sign_hash;
	return 0;
}