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/* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0"
*
* Written by Nir Drucker and Shay Gueron
* AWS Cryptographic Algorithms Group.
* (ndrucker@amazon.com, gueron@amazon.com)
*/
#pragma once
#include "types.h"
ret_t
compute_syndrome(OUT syndrome_t *syndrome, IN const ct_t *ct, IN const sk_t *sk);
// e should be zeroed before calling the decoder.
ret_t
decode(OUT split_e_t *e,
IN const syndrome_t *s,
IN const ct_t *ct,
IN const sk_t *sk);
// Rotate right the first R_BITS of a syndrome.
// Assumption: the syndrome contains three R_BITS duplications.
// The output syndrome contains only one R_BITS rotation, the other
// (2 * R_BITS) bits are undefined.
void
rotate_right(OUT syndrome_t *out, IN const syndrome_t *in, IN uint32_t bitscount);
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