mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-05 13:33:33 +01:00
182 lines
5.1 KiB
C
182 lines
5.1 KiB
C
/*
|
|
* Copyright 2022 The OpenSSL Project Authors. All Rights Reserved.
|
|
*
|
|
* Licensed under the Apache License 2.0 (the "License"). You may not use
|
|
* this file except in compliance with the License. You can obtain a copy
|
|
* in the file LICENSE in the source distribution or at
|
|
* https://www.openssl.org/source/license.html
|
|
*/
|
|
|
|
/*
|
|
* Simple aes wrap encryption demonstration program.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <openssl/err.h>
|
|
#include <openssl/bio.h>
|
|
#include <openssl/evp.h>
|
|
#include <openssl/crypto.h>
|
|
#include <openssl/core_names.h>
|
|
|
|
/* aes key */
|
|
static const unsigned char wrap_key[] = {
|
|
0xee, 0xbc, 0x1f, 0x57, 0x48, 0x7f, 0x51, 0x92, 0x1c, 0x04, 0x65, 0x66,
|
|
0x5f, 0x8a, 0xe6, 0xd1, 0x65, 0x8b, 0xb2, 0x6d, 0xe6, 0xf8, 0xa0, 0x69,
|
|
0xa3, 0x52, 0x02, 0x93, 0xa5, 0x72, 0x07, 0x8f
|
|
};
|
|
|
|
/* Unique initialisation vector */
|
|
static const unsigned char wrap_iv[] = {
|
|
0x99, 0xaa, 0x3e, 0x68, 0xed, 0x81, 0x73, 0xa0, 0xee, 0xd0, 0x66, 0x84,
|
|
0x99, 0xaa, 0x3e, 0x68,
|
|
};
|
|
|
|
/* Example plaintext to encrypt */
|
|
static const unsigned char wrap_pt[] = {
|
|
0xad, 0x4f, 0xc9, 0xfc, 0x77, 0x69, 0xc9, 0xea, 0xfc, 0xdf, 0x00, 0xac,
|
|
0x34, 0xec, 0x40, 0xbc, 0x28, 0x3f, 0xa4, 0x5e, 0xd8, 0x99, 0xe4, 0x5d,
|
|
0x5e, 0x7a, 0xc4, 0xe6, 0xca, 0x7b, 0xa5, 0xb7,
|
|
};
|
|
|
|
/* Expected ciphertext value */
|
|
static const unsigned char wrap_ct[] = {
|
|
0x97, 0x99, 0x55, 0xca, 0xf6, 0x3e, 0x95, 0x54, 0x39, 0xd6, 0xaf, 0x63, 0xff, 0x2c, 0xe3, 0x96,
|
|
0xf7, 0x0d, 0x2c, 0x9c, 0xc7, 0x43, 0xc0, 0xb6, 0x31, 0x43, 0xb9, 0x20, 0xac, 0x6b, 0xd3, 0x67,
|
|
0xad, 0x01, 0xaf, 0xa7, 0x32, 0x74, 0x26, 0x92,
|
|
};
|
|
|
|
/*
|
|
* A library context and property query can be used to select & filter
|
|
* algorithm implementations. If they are NULL then the default library
|
|
* context and properties are used.
|
|
*/
|
|
OSSL_LIB_CTX *libctx = NULL;
|
|
const char *propq = NULL;
|
|
|
|
int aes_wrap_encrypt(void)
|
|
{
|
|
int ret = 0;
|
|
EVP_CIPHER_CTX *ctx;
|
|
EVP_CIPHER *cipher = NULL;
|
|
int outlen, tmplen;
|
|
unsigned char outbuf[1024];
|
|
|
|
printf("aes wrap Encrypt:\n");
|
|
printf("Plaintext:\n");
|
|
BIO_dump_fp(stdout, wrap_pt, sizeof(wrap_pt));
|
|
|
|
/* Create a context for the encrypt operation */
|
|
if ((ctx = EVP_CIPHER_CTX_new()) == NULL)
|
|
goto err;
|
|
|
|
EVP_CIPHER_CTX_set_flags(ctx, EVP_CIPHER_CTX_FLAG_WRAP_ALLOW);
|
|
|
|
/* Fetch the cipher implementation */
|
|
if ((cipher = EVP_CIPHER_fetch(libctx, "AES-256-WRAP", propq)) == NULL)
|
|
goto err;
|
|
|
|
/*
|
|
* Initialise an encrypt operation with the cipher/mode, key and IV.
|
|
* We are not setting any custom params so let params be just NULL.
|
|
*/
|
|
if (!EVP_EncryptInit_ex2(ctx, cipher, wrap_key, wrap_iv, /* params */ NULL))
|
|
goto err;
|
|
|
|
/* Encrypt plaintext */
|
|
if (!EVP_EncryptUpdate(ctx, outbuf, &outlen, wrap_pt, sizeof(wrap_pt)))
|
|
goto err;
|
|
|
|
/* Finalise: there can be some additional output from padding */
|
|
if (!EVP_EncryptFinal_ex(ctx, outbuf + outlen, &tmplen))
|
|
goto err;
|
|
outlen += tmplen;
|
|
|
|
/* Output encrypted block */
|
|
printf("Ciphertext (outlen:%d):\n", outlen);
|
|
BIO_dump_fp(stdout, outbuf, outlen);
|
|
|
|
if (sizeof(wrap_ct) == outlen && !CRYPTO_memcmp(outbuf, wrap_ct, outlen))
|
|
printf("Final ciphertext matches expected ciphertext\n");
|
|
else
|
|
printf("Final ciphertext differs from expected ciphertext\n");
|
|
|
|
ret = 1;
|
|
err:
|
|
if (!ret)
|
|
ERR_print_errors_fp(stderr);
|
|
|
|
EVP_CIPHER_free(cipher);
|
|
EVP_CIPHER_CTX_free(ctx);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int aes_wrap_decrypt(void)
|
|
{
|
|
int ret = 0;
|
|
EVP_CIPHER_CTX *ctx;
|
|
EVP_CIPHER *cipher = NULL;
|
|
int outlen, tmplen;
|
|
unsigned char outbuf[1024];
|
|
|
|
printf("aes wrap Decrypt:\n");
|
|
printf("Ciphertext:\n");
|
|
BIO_dump_fp(stdout, wrap_ct, sizeof(wrap_ct));
|
|
|
|
if ((ctx = EVP_CIPHER_CTX_new()) == NULL)
|
|
goto err;
|
|
|
|
EVP_CIPHER_CTX_set_flags(ctx, EVP_CIPHER_CTX_FLAG_WRAP_ALLOW);
|
|
|
|
/* Fetch the cipher implementation */
|
|
if ((cipher = EVP_CIPHER_fetch(libctx, "aes-256-wrap", propq)) == NULL)
|
|
goto err;
|
|
|
|
/*
|
|
* Initialise an encrypt operation with the cipher/mode, key and IV.
|
|
* We are not setting any custom params so let params be just NULL.
|
|
*/
|
|
if (!EVP_DecryptInit_ex2(ctx, cipher, wrap_key, wrap_iv, /* params */ NULL))
|
|
goto err;
|
|
|
|
/* Decrypt plaintext */
|
|
if (!EVP_DecryptUpdate(ctx, outbuf, &outlen, wrap_ct, sizeof(wrap_ct)))
|
|
goto err;
|
|
|
|
/* Finalise: there can be some additional output from padding */
|
|
if (!EVP_DecryptFinal_ex(ctx, outbuf + outlen, &tmplen))
|
|
goto err;
|
|
outlen += tmplen;
|
|
|
|
/* Output decrypted block */
|
|
printf("Plaintext (outlen:%d):\n", outlen);
|
|
BIO_dump_fp(stdout, outbuf, outlen);
|
|
|
|
if (sizeof(wrap_pt) == outlen && !CRYPTO_memcmp(outbuf, wrap_pt, outlen))
|
|
printf("Final plaintext matches original plaintext\n");
|
|
else
|
|
printf("Final plaintext differs from original plaintext\n");
|
|
|
|
ret = 1;
|
|
err:
|
|
if (!ret)
|
|
ERR_print_errors_fp(stderr);
|
|
|
|
EVP_CIPHER_free(cipher);
|
|
EVP_CIPHER_CTX_free(ctx);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
if (!aes_wrap_encrypt())
|
|
return 1;
|
|
|
|
if (!aes_wrap_decrypt())
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|