// Copyright 2024 The BoringSSL Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include <openssl/mldsa.h>

#include "../fipsmodule/bcm_interface.h"

int MLDSA65_generate_key(
    uint8_t out_encoded_public_key[MLDSA65_PUBLIC_KEY_BYTES],
    uint8_t out_seed[MLDSA_SEED_BYTES],
    struct MLDSA65_private_key *out_private_key) {
  return bcm_success(BCM_mldsa65_generate_key(out_encoded_public_key, out_seed,
                                              out_private_key));
}

int MLDSA65_private_key_from_seed(struct MLDSA65_private_key *out_private_key,
                                  const uint8_t *seed, size_t seed_len) {
  if (seed_len != MLDSA_SEED_BYTES) {
    return 0;
  }
  return bcm_success(BCM_mldsa65_private_key_from_seed(out_private_key, seed));
}

int MLDSA65_public_from_private(struct MLDSA65_public_key *out_public_key,
                                const struct MLDSA65_private_key *private_key) {
  return bcm_success(
      BCM_mldsa65_public_from_private(out_public_key, private_key));
}

int MLDSA65_sign(uint8_t out_encoded_signature[MLDSA65_SIGNATURE_BYTES],
                 const struct MLDSA65_private_key *private_key,
                 const uint8_t *msg, size_t msg_len, const uint8_t *context,
                 size_t context_len) {
  if (context_len > 255) {
    return 0;
  }
  return bcm_success(BCM_mldsa65_sign(out_encoded_signature, private_key, msg,
                                      msg_len, context, context_len));
}

int MLDSA65_verify(const struct MLDSA65_public_key *public_key,
                   const uint8_t *signature, size_t signature_len,
                   const uint8_t *msg, size_t msg_len, const uint8_t *context,
                   size_t context_len) {
  if (context_len > 255 || signature_len != MLDSA65_SIGNATURE_BYTES) {
    return 0;
  }
  return bcm_success(BCM_mldsa65_verify(public_key, signature, msg, msg_len,
                                        context, context_len));
}

int MLDSA65_prehash_init(struct MLDSA65_prehash *out_state,
                         const struct MLDSA65_public_key *public_key,
                         const uint8_t *context, size_t context_len) {
  if (context_len > 255) {
    return 0;
  }
  BCM_mldsa65_prehash_init(out_state, public_key, context, context_len);
  return 1;
}

void MLDSA65_prehash_update(struct MLDSA65_prehash *inout_state,
                            const uint8_t *msg, size_t msg_len) {
  BCM_mldsa65_prehash_update(inout_state, msg, msg_len);
}

void MLDSA65_prehash_finalize(uint8_t out_msg_rep[MLDSA_MU_BYTES],
                              struct MLDSA65_prehash *inout_state) {
  BCM_mldsa65_prehash_finalize(out_msg_rep, inout_state);
}

int MLDSA65_sign_message_representative(
    uint8_t out_encoded_signature[MLDSA65_SIGNATURE_BYTES],
    const struct MLDSA65_private_key *private_key,
    const uint8_t msg_rep[MLDSA_MU_BYTES]) {
  return bcm_success(BCM_mldsa65_sign_message_representative(
      out_encoded_signature, private_key, msg_rep));
}

int MLDSA65_marshal_public_key(CBB *out,
                               const struct MLDSA65_public_key *public_key) {
  return bcm_success(BCM_mldsa65_marshal_public_key(out, public_key));
}

int MLDSA65_parse_public_key(struct MLDSA65_public_key *public_key, CBS *in) {
  return bcm_success(BCM_mldsa65_parse_public_key(public_key, in));
}

int MLDSA87_generate_key(
    uint8_t out_encoded_public_key[MLDSA87_PUBLIC_KEY_BYTES],
    uint8_t out_seed[MLDSA_SEED_BYTES],
    struct MLDSA87_private_key *out_private_key) {
  return bcm_success(BCM_mldsa87_generate_key(out_encoded_public_key, out_seed,
                                              out_private_key));
}

int MLDSA87_private_key_from_seed(struct MLDSA87_private_key *out_private_key,
                                  const uint8_t *seed, size_t seed_len) {
  if (seed_len != MLDSA_SEED_BYTES) {
    return 0;
  }
  return bcm_success(BCM_mldsa87_private_key_from_seed(out_private_key, seed));
}

int MLDSA87_public_from_private(struct MLDSA87_public_key *out_public_key,
                                const struct MLDSA87_private_key *private_key) {
  return bcm_success(
      BCM_mldsa87_public_from_private(out_public_key, private_key));
}

int MLDSA87_sign(uint8_t out_encoded_signature[MLDSA87_SIGNATURE_BYTES],
                 const struct MLDSA87_private_key *private_key,
                 const uint8_t *msg, size_t msg_len, const uint8_t *context,
                 size_t context_len) {
  if (context_len > 255) {
    return 0;
  }
  return bcm_success(BCM_mldsa87_sign(out_encoded_signature, private_key, msg,
                                      msg_len, context, context_len));
}

int MLDSA87_verify(const struct MLDSA87_public_key *public_key,
                   const uint8_t *signature, size_t signature_len,
                   const uint8_t *msg, size_t msg_len, const uint8_t *context,
                   size_t context_len) {
  if (context_len > 255 || signature_len != MLDSA87_SIGNATURE_BYTES) {
    return 0;
  }
  return bcm_success(BCM_mldsa87_verify(public_key, signature, msg, msg_len,
                                        context, context_len));
}

int MLDSA87_prehash_init(struct MLDSA87_prehash *out_state,
                         const struct MLDSA87_public_key *public_key,
                         const uint8_t *context, size_t context_len) {
  if (context_len > 255) {
    return 0;
  }
  BCM_mldsa87_prehash_init(out_state, public_key, context, context_len);
  return 1;
}

void MLDSA87_prehash_update(struct MLDSA87_prehash *inout_state,
                            const uint8_t *msg, size_t msg_len) {
  BCM_mldsa87_prehash_update(inout_state, msg, msg_len);
}

void MLDSA87_prehash_finalize(uint8_t out_msg_rep[MLDSA_MU_BYTES],
                              struct MLDSA87_prehash *inout_state) {
  BCM_mldsa87_prehash_finalize(out_msg_rep, inout_state);
}

int MLDSA87_sign_message_representative(
    uint8_t out_encoded_signature[MLDSA87_SIGNATURE_BYTES],
    const struct MLDSA87_private_key *private_key,
    const uint8_t msg_rep[MLDSA_MU_BYTES]) {
  return bcm_success(BCM_mldsa87_sign_message_representative(
      out_encoded_signature, private_key, msg_rep));
}

int MLDSA87_marshal_public_key(CBB *out,
                               const struct MLDSA87_public_key *public_key) {
  return bcm_success(BCM_mldsa87_marshal_public_key(out, public_key));
}

int MLDSA87_parse_public_key(struct MLDSA87_public_key *public_key, CBS *in) {
  return bcm_success(BCM_mldsa87_parse_public_key(public_key, in));
}

int MLDSA44_generate_key(
    uint8_t out_encoded_public_key[MLDSA44_PUBLIC_KEY_BYTES],
    uint8_t out_seed[MLDSA_SEED_BYTES],
    struct MLDSA44_private_key *out_private_key) {
  return bcm_success(BCM_mldsa44_generate_key(out_encoded_public_key, out_seed,
                                              out_private_key));
}

int MLDSA44_private_key_from_seed(struct MLDSA44_private_key *out_private_key,
                                  const uint8_t *seed, size_t seed_len) {
  if (seed_len != MLDSA_SEED_BYTES) {
    return 0;
  }
  return bcm_success(BCM_mldsa44_private_key_from_seed(out_private_key, seed));
}

int MLDSA44_public_from_private(struct MLDSA44_public_key *out_public_key,
                                const struct MLDSA44_private_key *private_key) {
  return bcm_success(
      BCM_mldsa44_public_from_private(out_public_key, private_key));
}

int MLDSA44_sign(uint8_t out_encoded_signature[MLDSA44_SIGNATURE_BYTES],
                 const struct MLDSA44_private_key *private_key,
                 const uint8_t *msg, size_t msg_len, const uint8_t *context,
                 size_t context_len) {
  if (context_len > 255) {
    return 0;
  }
  return bcm_success(BCM_mldsa44_sign(out_encoded_signature, private_key, msg,
                                      msg_len, context, context_len));
}

int MLDSA44_verify(const struct MLDSA44_public_key *public_key,
                   const uint8_t *signature, size_t signature_len,
                   const uint8_t *msg, size_t msg_len, const uint8_t *context,
                   size_t context_len) {
  if (context_len > 255 || signature_len != MLDSA44_SIGNATURE_BYTES) {
    return 0;
  }
  return bcm_success(BCM_mldsa44_verify(public_key, signature, msg, msg_len,
                                        context, context_len));
}

int MLDSA44_prehash_init(struct MLDSA44_prehash *out_state,
                         const struct MLDSA44_public_key *public_key,
                         const uint8_t *context, size_t context_len) {
  if (context_len > 255) {
    return 0;
  }
  BCM_mldsa44_prehash_init(out_state, public_key, context, context_len);
  return 1;
}

void MLDSA44_prehash_update(struct MLDSA44_prehash *inout_state,
                            const uint8_t *msg, size_t msg_len) {
  BCM_mldsa44_prehash_update(inout_state, msg, msg_len);
}

void MLDSA44_prehash_finalize(uint8_t out_msg_rep[MLDSA_MU_BYTES],
                              struct MLDSA44_prehash *inout_state) {
  BCM_mldsa44_prehash_finalize(out_msg_rep, inout_state);
}

int MLDSA44_sign_message_representative(
    uint8_t out_encoded_signature[MLDSA44_SIGNATURE_BYTES],
    const struct MLDSA44_private_key *private_key,
    const uint8_t msg_rep[MLDSA_MU_BYTES]) {
  return bcm_success(BCM_mldsa44_sign_message_representative(
      out_encoded_signature, private_key, msg_rep));
}

int MLDSA44_marshal_public_key(CBB *out,
                               const struct MLDSA44_public_key *public_key) {
  return bcm_success(BCM_mldsa44_marshal_public_key(out, public_key));
}

int MLDSA44_parse_public_key(struct MLDSA44_public_key *public_key, CBS *in) {
  return bcm_success(BCM_mldsa44_parse_public_key(public_key, in));
}