/*************************************************************************
* Copyright (C) 2023 Intel Corporation
*
* 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
*
* 	http://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.
*************************************************************************/
#ifdef MBX_FIPS_MODE

#include <crypto_mb/ec_nistp384.h>
#include <crypto_mb/fips_cert.h>

#include <internal/fips_cert/common.h>

#ifndef BN_OPENSSL_DISABLE
  #include <openssl/ecdsa.h>
#endif

/* KAT TEST (taken from FIPS 186-4 examples) */
// msg ==
// "9dd789ea25c04745d57a381f22de01fb0abd3c72dbdefd44e43213c189583eef"
// "85ba662044da3de2dd8670e6325154480155bbeebb702c75781ac32e13941860"
// "cb576fe37a05b757da5b5b418f6dd7c30b042e40f4395a342ae4dce05634c336"
// "25e2bc524345481f7e253d9551266823771b251705b4a85166022a37ac28f1bd"

/* msgDigest == SHA-384(msg) */
static const int8u msg_digest[MBX_NISTP384_DATA_BYTE_LEN] = {0x96,0x5b,0x83,0xf5,0xd3,0x4f,0x74,0x43,
                                                         0xeb,0x88,0xe7,0x8f,0xcc,0x23,0x47,0x91,
                                                         0x56,0xc9,0xcb,0x00,0x80,0xdd,0x68,0x33,
                                                         0x4d,0xac,0x0a,0xd3,0x3b,0xa8,0xc7,0x74,
                                                         0x10,0x0e,0x44,0x00,0x63,0xdb,0x28,0xb4,
                                                         0x0b,0x51,0xac,0x37,0x70,0x5d,0x4d,0x70};
/* public key */
static const int8u Qx[MBX_NISTP384_DATA_BYTE_LEN]         = {0x44,0xf1,0x9a,0xfd,0x64,0xd0,0xd7,0x37,
                                                         0xef,0x0f,0xe0,0x23,0xfb,0x78,0xbd,0x75,
                                                         0x1d,0x95,0xd1,0x95,0x51,0x76,0xb3,0xe2,
                                                         0x35,0x50,0x0c,0xe2,0xec,0x4f,0x15,0xcb,
                                                         0x33,0x9b,0x57,0x83,0x43,0xe1,0xe1,0x8e,
                                                         0x7b,0xa5,0x16,0xd5,0x1f,0x8b,0x90,0xcb};

static const int8u Qy[MBX_NISTP384_DATA_BYTE_LEN]         = {0xbb,0x74,0xc3,0xf7,0xfd,0xbd,0x83,0x95,
                                                         0xa0,0xca,0xdb,0x2a,0xe3,0xfb,0x9b,0xf7,
                                                         0x60,0xc3,0xb2,0x59,0x6f,0x1f,0x55,0x8c,
                                                         0xed,0x1b,0x01,0x9a,0xad,0xcb,0xf1,0xfa,
                                                         0x21,0x21,0x82,0xcf,0xf7,0x2c,0xff,0xdc,
                                                         0x1d,0x40,0x57,0x58,0x6b,0xc4,0x99,0xcd};
/* signature */
static const int8u r[MBX_NISTP384_DATA_BYTE_LEN]          = {0x33,0xf6,0x4f,0xb6,0x5c,0xd6,0xa8,0x91,
                                                         0x85,0x23,0xf2,0x3a,0xea,0x0b,0xbc,0xf5,
                                                         0x6b,0xba,0x1d,0xac,0xa7,0xaf,0xf8,0x17,
                                                         0xc8,0x79,0x1d,0xc9,0x24,0x28,0xd6,0x05,
                                                         0xac,0x62,0x9d,0xe2,0xe8,0x47,0xd4,0x3c,
                                                         0xee,0x55,0xba,0x9e,0x4a,0x0e,0x83,0xba};

static const int8u s[MBX_NISTP384_DATA_BYTE_LEN]          = {0x44,0x28,0xbb,0x47,0x8a,0x43,0xac,0x73,
                                                         0xec,0xd6,0xde,0x51,0xdd,0xf7,0xc2,0x8f,
                                                         0xf3,0xc2,0x44,0x16,0x25,0xa0,0x81,0x71,
                                                         0x43,0x37,0xdd,0x44,0xfe,0xa8,0x01,0x1b,
                                                         0xae,0x71,0x95,0x9a,0x10,0x94,0x7b,0x6e,
                                                         0xa3,0x3f,0x77,0xe1,0x28,0xd3,0xc6,0xae};

DLL_PUBLIC
fips_test_status fips_selftest_mbx_nistp384_ecdsa_verify_mb8(void) {
  fips_test_status test_result = MBX_ALGO_SELFTEST_OK;

  /* function input parameters */
  // msg digest
  const int8u *const pa_pub_msg_digest[MBX_LANES] = {
      msg_digest, msg_digest, msg_digest, msg_digest,
      msg_digest, msg_digest, msg_digest, msg_digest};
  // public key
  const int64u *const pa_pub_Qx[MBX_LANES] = {
      (const int64u *const)Qx, (const int64u *const)Qx,
      (const int64u *const)Qx, (const int64u *const)Qx,
      (const int64u *const)Qx, (const int64u *const)Qx,
      (const int64u *const)Qx, (const int64u *const)Qx};
  const int64u *const pa_pub_Qy[MBX_LANES] = {
      (const int64u *const)Qy, (const int64u *const)Qy,
      (const int64u *const)Qy, (const int64u *const)Qy,
      (const int64u *const)Qy, (const int64u *const)Qy,
      (const int64u *const)Qy, (const int64u *const)Qy};
  // signature
  const int8u *const pa_sign_r[MBX_LANES] = {r, r, r, r, r, r, r, r};
  const int8u *const pa_sign_s[MBX_LANES] = {s, s, s, s, s, s, s, s};

  /* test function */
  mbx_status expected_sts_mb8 = MBX_SET_STS_ALL(MBX_STATUS_OK);

  mbx_status sts;
  sts = mbx_nistp384_ecdsa_verify_mb8(pa_sign_r, pa_sign_s, pa_pub_msg_digest, pa_pub_Qx, pa_pub_Qy, NULL, NULL);
  if (expected_sts_mb8 != sts) {
    test_result = MBX_ALGO_SELFTEST_KAT_ERR;
  }

  return test_result;
}

#ifndef BN_OPENSSL_DISABLE

#define MEM_FREE(BN_PTR1, BN_PTR2, SIG_PTR1) { \
    BN_free(BN_PTR1);                          \
    BN_free(BN_PTR2);                          \
    ECDSA_SIG_free(SIG_PTR1); }

DLL_PUBLIC
fips_test_status fips_selftest_mbx_nistp384_ecdsa_verify_ssl_mb8(void) {
  fips_test_status test_result = MBX_ALGO_SELFTEST_OK;

  /* ssl public key */
  BIGNUM *BN_Qx = BN_new();
  BIGNUM *BN_Qy = BN_new();

  // ssl signature
  BIGNUM *BN_r = BN_new();
  BIGNUM *BN_s = BN_new();
  ECDSA_SIG *sig = ECDSA_SIG_new();
  /* check if allocated memory is valid */
  if(NULL == BN_Qx || NULL == BN_Qy || NULL == BN_r || NULL == BN_s || NULL == sig) {
    test_result = MBX_ALGO_SELFTEST_BAD_ARGS_ERR;
    MEM_FREE(BN_Qx, BN_Qy, sig)
    // Handled separately, since memory management of
    // these variables is transferred to sig below
    BN_free(BN_r);
    BN_free(BN_s);
    return test_result;
  }

  // set ssl public key
  BN_lebin2bn(Qx, MBX_NISTP384_DATA_BYTE_LEN, BN_Qx);
  BN_lebin2bn(Qy, MBX_NISTP384_DATA_BYTE_LEN, BN_Qy);
  // set ssl signature
  BN_bin2bn(r, MBX_NISTP384_DATA_BYTE_LEN, BN_r);
  BN_bin2bn(s, MBX_NISTP384_DATA_BYTE_LEN, BN_s);
  ECDSA_SIG_set0(sig, BN_r, BN_s);

  /* function input parameters */
  // msg digest
  const int8u *const pa_pub_msg_digest[MBX_LANES] = {
      msg_digest, msg_digest, msg_digest, msg_digest,
      msg_digest, msg_digest, msg_digest, msg_digest};
  // public key
  const BIGNUM *const pa_pub_Qx[MBX_LANES] = {BN_Qx, BN_Qx, BN_Qx, BN_Qx,
                                              BN_Qx, BN_Qx, BN_Qx, BN_Qx};
  const BIGNUM *const pa_pub_Qy[MBX_LANES] = {BN_Qy, BN_Qy, BN_Qy, BN_Qy,
                                              BN_Qy, BN_Qy, BN_Qy, BN_Qy};
  // signature
  const ECDSA_SIG *const pa_sig[MBX_LANES] = {sig, sig, sig, sig,
                                              sig, sig, sig, sig};

  /* test function */
  mbx_status expected_sts_mb8 = MBX_SET_STS_ALL(MBX_STATUS_OK);

  mbx_status sts;
  sts = mbx_nistp384_ecdsa_verify_ssl_mb8(pa_sig, pa_pub_msg_digest, pa_pub_Qx, pa_pub_Qy, NULL, NULL);
  if (expected_sts_mb8 != sts) {
    test_result = MBX_ALGO_SELFTEST_KAT_ERR;
  }

  // memory free
  MEM_FREE(BN_Qx, BN_Qy, sig)

  return test_result;
}

#endif // BN_OPENSSL_DISABLE
#endif // MBX_FIPS_MODE
