/*
 * Copyright (c) 2019 Cisco and/or its affiliates.
 * 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.
 */

/* Test vectors published by NIST as SP 800-38A
   https://csrc.nist.gov/CSRC/media/Projects/Cryptographic-Standards-and-Guidelines/documents/examples/AES_CFB.pdf
 */

#include <vppinfra/clib.h>
#include <vnet/crypto/crypto.h>
#include <unittest/crypto/crypto.h>

static u8 iv[] = {
  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
  0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
};

static u8 plaintext[] = {
  0x6B, 0xC1, 0xBE, 0xE2, 0x2E, 0x40, 0x9F, 0x96,
  0xE9, 0x3D, 0x7E, 0x11, 0x73, 0x93, 0x17, 0x2A,
  0xAE, 0x2D, 0x8A, 0x57, 0x1E, 0x03, 0xAC, 0x9C,
  0x9E, 0xB7, 0x6F, 0xAC, 0x45, 0xAF, 0x8E, 0x51,
  0x30, 0xC8, 0x1C, 0x46, 0xA3, 0x5C, 0xE4, 0x11,
  0xE5, 0xFB, 0xC1, 0x19, 0x1A, 0x0A, 0x52, 0xEF,
  0xF6, 0x9F, 0x24, 0x45, 0xDF, 0x4F, 0x9B, 0x17,
  0xAD, 0x2B, 0x41, 0x7B, 0xE6, 0x6C, 0x37, 0x10,
};

static u8 key128[] = {
  0x2B, 0x7E, 0x15, 0x16, 0x28, 0xAE, 0xD2, 0xA6,
  0xAB, 0xF7, 0x15, 0x88, 0x09, 0xCF, 0x4F, 0x3C
};

static u8 ciphertext128[] = {
  0x76, 0x49, 0xAB, 0xAC, 0x81, 0x19, 0xB2, 0x46,
  0xCE, 0xE9, 0x8E, 0x9B, 0x12, 0xE9, 0x19, 0x7D,
  0x50, 0x86, 0xCB, 0x9B, 0x50, 0x72, 0x19, 0xEE,
  0x95, 0xDB, 0x11, 0x3A, 0x91, 0x76, 0x78, 0xB2,
  0x73, 0xBE, 0xD6, 0xB8, 0xE3, 0xC1, 0x74, 0x3B,
  0x71, 0x16, 0xE6, 0x9E, 0x22, 0x22, 0x95, 0x16,
  0x3F, 0xF1, 0xCA, 0xA1, 0x68, 0x1F, 0xAC, 0x09,
  0x12, 0x0E, 0xCA, 0x30, 0x75, 0x86, 0xE1, 0xA7,
};

UNITTEST_REGISTER_CRYPTO_TEST (nist_aes128_cbc) = {
  .name = "NIST SP 800-38A",
  .alg = VNET_CRYPTO_ALG_AES_128_CBC,
  .iv = TEST_DATA (iv),
  .key = TEST_DATA (key128),
  .plaintext = TEST_DATA (plaintext),
  .ciphertext = TEST_DATA (ciphertext128),
};


static u8 key192[24] = {
  0x8E, 0x73, 0xB0, 0xF7, 0xDA, 0x0E, 0x64, 0x52,
  0xC8, 0x10, 0xF3, 0x2B, 0x80, 0x90, 0x79, 0xE5,
  0x62, 0xF8, 0xEA, 0xD2, 0x52, 0x2C, 0x6B, 0x7B,
};

static u8 ciphertext192[64] = {
  0x4F, 0x02, 0x1D, 0xB2, 0x43, 0xBC, 0x63, 0x3D,
  0x71, 0x78, 0x18, 0x3A, 0x9F, 0xA0, 0x71, 0xE8,
  0xB4, 0xD9, 0xAD, 0xA9, 0xAD, 0x7D, 0xED, 0xF4,
  0xE5, 0xE7, 0x38, 0x76, 0x3F, 0x69, 0x14, 0x5A,
  0x57, 0x1B, 0x24, 0x20, 0x12, 0xFB, 0x7A, 0xE0,
  0x7F, 0xA9, 0xBA, 0xAC, 0x3D, 0xF1, 0x02, 0xE0,
  0x08, 0xB0, 0xE2, 0x79, 0x88, 0x59, 0x88, 0x81,
  0xD9, 0x20, 0xA9, 0xE6, 0x4F, 0x56, 0x15, 0xCD,
};

UNITTEST_REGISTER_CRYPTO_TEST (nist_aes192_cbc) = {
  .name = "NIST SP 800-38A",
  .alg = VNET_CRYPTO_ALG_AES_192_CBC,
  .iv = TEST_DATA (iv),
  .key = TEST_DATA (key192),
  .plaintext = TEST_DATA (plaintext),
  .ciphertext = TEST_DATA (ciphertext192),
};


static u8 key256[32] = {
  0x60, 0x3D, 0xEB, 0x10, 0x15, 0xCA, 0x71, 0xBE,
  0x2B, 0x73, 0xAE, 0xF0, 0x85, 0x7D, 0x77, 0x81,
  0x1F, 0x35, 0x2C, 0x07, 0x3B, 0x61, 0x08, 0xD7,
  0x2D, 0x98, 0x10, 0xA3, 0x09, 0x14, 0xDF, 0xF4,
};

static u8 ciphertext256[64] = {
  0xF5, 0x8C, 0x4C, 0x04, 0xD6, 0xE5, 0xF1, 0xBA,
  0x77, 0x9E, 0xAB, 0xFB, 0x5F, 0x7B, 0xFB, 0xD6,
  0x9C, 0xFC, 0x4E, 0x96, 0x7E, 0xDB, 0x80, 0x8D,
  0x67, 0x9F, 0x77, 0x7B, 0xC6, 0x70, 0x2C, 0x7D,
  0x39, 0xF2, 0x33, 0x69, 0xA9, 0xD9, 0xBA, 0xCF,
  0xA5, 0x30, 0xE2, 0x63, 0x04, 0x23, 0x14, 0x61,
  0xB2, 0xEB, 0x05, 0xE2, 0xC3, 0x9B, 0xE9, 0xFC,
  0xDA, 0x6C, 0x19, 0x07, 0x8C, 0x6A, 0x9D, 0x1B,
};

UNITTEST_REGISTER_CRYPTO_TEST (nist_aes256_cbc) = {
  .name = "NIST SP 800-38A",
  .alg = VNET_CRYPTO_ALG_AES_256_CBC,
  .iv = TEST_DATA (iv),
  .key = TEST_DATA (key256),
  .plaintext = TEST_DATA (plaintext),
  .ciphertext = TEST_DATA (ciphertext256),
};

UNITTEST_REGISTER_CRYPTO_TEST (nist_aes256_cbc_chained) = {
  .name = "NIST SP 800-38A [chained]",
  .alg = VNET_CRYPTO_ALG_AES_256_CBC,
  .iv = TEST_DATA (iv),
  .key = TEST_DATA (key256),
  .is_chained = 1,
  .pt_chunks = {
    TEST_DATA_CHUNK (plaintext, 0, 32),
    TEST_DATA_CHUNK (plaintext, 32, 32),
  },
  .ct_chunks = {
    TEST_DATA_CHUNK (ciphertext256, 0, 32),
    TEST_DATA_CHUNK (ciphertext256, 32, 32),
  },
};

UNITTEST_REGISTER_CRYPTO_TEST (nist_aes256_incr) = {
  .name = "NIST SP 800-38A incr (1024 B)",
  .alg = VNET_CRYPTO_ALG_AES_256_CBC,
  .key.length = 32,
  .plaintext_incremental = 1024,
};

UNITTEST_REGISTER_CRYPTO_TEST (nist_aes256_incr2) = {
  .name = "NIST SP 800-38A incr (1056 B)",
  .alg = VNET_CRYPTO_ALG_AES_256_CBC,
  .key.length = 32,
  .plaintext_incremental = 1056,
};

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */