#include "cmix.h"

#include <string.h>

enum cmix_error permutation(struct CMixBuffer b) {
	return no_error;
}

enum cmix_error get_message(char* message, struct CMixBuffer b, unsigned int index)
{
	if(index >= b.message_length) {
		return index_out_of_range;
	}
	
	strncpy(message, b.buffer + index * b.message_length, b.message_length);

	return no_error;
}

enum cmix_error set_message(char const* message, struct CMixBuffer b, unsigned int index)
{
	if(index >= b.message_length) {
		return index_out_of_range;
	}
	
	strncpy(b.buffer + index * b.message_length, message, b.message_length);
	
	return no_error;
}

enum cmix_error calculate_shared_key_part(struct Bignum* result, struct Bignum partial_shared, struct Bignum my_share, struct Bignum mod)
{
	if(multiply_mod(result, partial_shared, my_share, mod) != NoError) {
		return cmix_bignum_error;
	}
	return no_error;
}