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/***************************************************************************/
/* Copyright (c) 2024 Microsoft Corporation */
/* Copyright (c) 2026 Eclipse ThreadX contributors */
/* */
/* This program and the accompanying materials are made available under */
/* the terms of the MIT License which is available at */
/* https://opensource.org/licenses/MIT. */
/* */
/* SPDX-License-Identifier: MIT */
/***************************************************************************/
#include "nx_secure_tls_api.h"
#include "nx_crypto.h"
// Utility function to print buffer
void print_buffer(const UCHAR* buf, ULONG size)
{
UINT i;
printf("Buffer of size: %ld. Data:\n", size);
if(buf)
{
for(i = 0; i < size; ++i)
{
printf("%02x ", (UINT)buf[i]);
if((i+1) % 8 == 0)
{
printf("\n");
}
}
}
else
{
printf("NULL buffer passed as number\n");
}
printf("\n");
}
/* Define cryptographic methods for use with TLS. */
/* Declare the NONE method: encrypt / hash method not config */
static NX_CRYPTO_METHOD crypto_method_none =
{
NX_CRYPTO_NONE, /* Name of the crypto algorithm */
0, /* Key size in bits, not used */
0, /* IV size in bits, not used */
0, /* ICV size in bits, not used */
0, /* Block size in bytes */
0, /* Metadata size in bytes */
NX_NULL, /* Initialization routine, not used */
NX_NULL, /* Cleanup routine, not used */
NX_NULL /* NULL operation */
};
/* Declare the NULL encrypt */
static NX_CRYPTO_METHOD crypto_method_null =
{
NX_CRYPTO_ENCRYPTION_NULL, /* Name of the crypto algorithm */
0, /* Key size in bits, not used */
0, /* IV size in bits, not used */
0, /* ICV size in bits, not used */
4, /* Block size in bytes */
0, /* Metadata size in bytes */
NX_NULL, /* Initialization routine, not used */
NX_NULL, /* Cleanup routine, not used */
NX_NULL /* NULL operation */
};
/* Declare the AES-CBC 128 encrytion method. */
static NX_CRYPTO_METHOD crypto_method_aes_cbc_128 =
{
NX_CRYPTO_ENCRYPTION_AES_CBC, /* AES crypto algorithm */
NX_CRYPTO_AES_128_KEY_LEN_IN_BITS, /* Key size in bits */
NX_CRYPTO_AES_IV_LEN_IN_BITS, /* IV size in bits */
0, /* ICV size in bits, not used. */
(NX_CRYPTO_AES_BLOCK_SIZE_IN_BITS >> 3), /* Block size in bytes. */
sizeof(NX_AES), /* Metadata size in bytes */
_nx_crypto_method_aes_init, /* AES-CBC initialization routine. */
NX_NULL, /* AES-CBC cleanup routine, not used. */
_nx_crypto_method_aes_operation /* AES-CBC operation */
};
/* Declare the AES-CBC 256 encryption method */
static NX_CRYPTO_METHOD crypto_method_aes_cbc_256 =
{
NX_CRYPTO_ENCRYPTION_AES_CBC, /* AES crypto algorithm */
NX_CRYPTO_AES_256_KEY_LEN_IN_BITS, /* Key size in bits */
NX_CRYPTO_AES_IV_LEN_IN_BITS, /* IV size in bits */
0, /* ICV size in bits, not used. */
(NX_CRYPTO_AES_BLOCK_SIZE_IN_BITS >> 3), /* Block size in bytes. */
sizeof(NX_AES), /* Metadata size in bytes */
_nx_crypto_method_aes_init, /* AES-CBC initialization routine. */
NX_NULL, /* AES-CBC cleanup routine, not used. */
_nx_crypto_method_aes_operation /* AES-CBC operation */
};
/* Declare the HMAC SHA1 authentication method */
static NX_CRYPTO_METHOD crypto_method_hmac_sha1 =
{
TLS_HASH_SHA_1, /* HMAC SHA1 algorithm */
NX_CRYPTO_HMAC_SHA1_KEY_LEN_IN_BITS, /* Key size in bits */
0, /* IV size in bits, not used */
NX_CRYPTO_AUTHENTICATION_ICV_TRUNC_BITS, /* Transmitted ICV size in bits */
0, /* Block size in bytes, not used */
sizeof(NX_SHA1_HMAC), /* Metadata size in bytes */
NX_NULL, /* Initialization routine, not used */
NX_NULL, /* Cleanup routine, not used */
_nx_crypto_method_hmac_sha1_operation /* HMAC SHA1 operation */
};
/* Declare the HMAC SHA256 authentication method */
static NX_CRYPTO_METHOD crypto_method_hmac_sha256 =
{
TLS_HASH_SHA_256, /* HMAC SHA256 algorithm */
NX_CRYPTO_HMAC_SHA256_KEY_LEN_IN_BITS, /* Key size in bits */
0, /* IV size in bits, not used */
NX_CRYPTO_AUTHENTICATION_ICV_TRUNC_BITS, /* Transmitted ICV size in bits */
0, /* Block size in bytes, not used */
sizeof(NX_SHA256_HMAC), /* Metadata size in bytes */
NX_NULL, /* Initialization routine, not used */
NX_NULL, /* Cleanup routine, not used */
_nx_crypto_method_hmac_sha256_operation /* HMAC SHA256 operation */
};
/* Declare the HMAC MD5 authentication method */
static NX_CRYPTO_METHOD crypto_method_hmac_md5 =
{
TLS_HASH_MD5, /* HMAC MD5 algorithm */
NX_CRYPTO_HMAC_MD5_KEY_LEN_IN_BITS, /* Key size in bits */
0, /* IV size in bits, not used */
NX_CRYPTO_AUTHENTICATION_ICV_TRUNC_BITS, /* Transmitted ICV size in bits */
0, /* Block size in bytes, not used */
sizeof(NX_MD5_HMAC), /* Metadata size in bytes */
NX_NULL, /* Initialization routine, not used */
NX_NULL, /* Cleanup routine, not used */
_nx_crypto_method_hmac_md5_operation /* HMAC MD5 operation */
};
/* Declare the RSA public cipher method. */
static NX_CRYPTO_METHOD crypto_method_rsa =
{
TLS_CIPHER_RSA, /* RSA crypto algorithm */
0, /* Key size in bits */
0, /* IV size in bits */
0, /* ICV size in bits, not used. */
0, /* Block size in bytes. */
sizeof(NX_CRYPTO_RSA), /* Metadata size in bytes */
_nx_crypto_method_rsa_init, /* RSA initialization routine. */
NX_NULL, /* RSA cleanup routine, not used. */
_nx_crypto_method_rsa_operation /* RSA operation */
};
/* Declare the public NULL cipher (not to be confused with the NULL methods above). This
* is used as a placeholder in ciphersuites that do not use a cipher method for a
* particular operation (e.g. some PSK ciphersuites don't use a public-key algorithm
* like RSA).
*/
static NX_CRYPTO_METHOD crypto_method_public_null =
{
TLS_CIPHER_NULL, /* Name of the crypto algorithm */
0, /* Key size in bits, not used */
0, /* IV size in bits, not used */
0, /* ICV size in bits, not used */
1, /* Block size in bytes */
0, /* Metadata size in bytes */
_nx_crypto_method_null_init, /* Initialization routine, not used */
NX_NULL, /* Cleanup routine, not used */
_nx_crypto_method_null_operation /* NULL operation */
};
/* Declare the MD5 hash method */
static NX_CRYPTO_METHOD crypto_method_md5 =
{
TLS_HASH_MD5, /* MD5 algorithm */
0, /* Key size in bits */
0, /* IV size in bits, not used */
0, /* Transmitted ICV size in bits */
16, /* Block size in bytes */
sizeof(NX_MD5), /* Metadata size in bytes */
NX_NULL, /* Initialization routine, not used */
NX_NULL, /* Cleanup routine, not used */
_nx_crypto_method_md5_operation /* MD5 operation */
};
/* Declare the SHA1 hash method */
static NX_CRYPTO_METHOD crypto_method_sha1 =
{
TLS_HASH_SHA_1, /* SHA1 algorithm */
0, /* Key size in bits */
0, /* IV size in bits, not used */
0, /* Transmitted ICV size in bits */
20, /* Block size in bytes */
sizeof(NX_SHA1), /* Metadata size in bytes */
NX_NULL, /* Initialization routine, not used */
NX_NULL, /* Cleanup routine, not used */
_nx_crypto_method_sha1_operation /* SHA1 operation */
};
/* Declare the SHA256 hash method */
static NX_CRYPTO_METHOD crypto_method_sha256 =
{
TLS_HASH_SHA_256, /* SHA256 algorithm */
0, /* Key size in bits */
0, /* IV size in bits, not used */
0, /* Transmitted ICV size in bits */
32, /* Block size in bytes */
sizeof(NX_SHA256), /* Metadata size in bytes */
NX_NULL, /* Initialization routine, not used */
NX_NULL, /* Cleanup routine, not used */
_nx_crypto_method_sha256_operation /* SHA256 operation */
};
/* Declare the supported encryption methods.
This table is used in constructing the NX_CRYPTO method list. */
static NX_CRYPTO_METHOD *encryption_method_table[] =
{
&crypto_method_aes_cbc_128,
&crypto_method_aes_cbc_256,
&crypto_method_null
};
/* Declare the supported authentication methods.
This table is used in constructing the NX_CRYPTO method list. */
static NX_CRYPTO_METHOD *authentication_method_table[] =
{
&crypto_method_hmac_sha1,
&crypto_method_hmac_sha256,
&crypto_method_hmac_md5,
&crypto_method_none
};
/* Declare the supported public cipher methods.
This table is used in constructing the NX_CRYPTO method list. */
static NX_CRYPTO_METHOD *public_cipher_method_table[] =
{
&crypto_method_rsa,
&crypto_method_public_null,
&crypto_method_null
};
/* Declare the supported hash methods.
This table is used in constructing the NX_CRYPTO method list. */
static NX_CRYPTO_METHOD *hash_method_table[] =
{
&crypto_method_md5,
&crypto_method_sha1,
&crypto_method_sha256
};
static NX_SECURE_METHODS tls_methods =
{
encryption_method_table,
3,
authentication_method_table,
4,
public_cipher_method_table,
2,
hash_method_table,
3
};
/* Define scratch space for cryptographic methods. */
static CHAR crypto_metadata[2*sizeof(NX_AES)];
static CHAR authentication_metadata[2 * sizeof(NX_SHA256_HMAC)];
static CHAR public_cipher_metadata[2 * sizeof(NX_CRYPTO_RSA)];
static CHAR handshake_hash_metadata[2 * (sizeof(NX_MD5) + sizeof(NX_SHA1) + sizeof(NX_SHA256))];
static CHAR crypto_metadata2[2*sizeof(NX_AES)];
static CHAR authentication_metadata2[2 * sizeof(NX_SHA256_HMAC)];
static CHAR public_cipher_metadata2[2 * sizeof(NX_CRYPTO_RSA)];
static CHAR handshake_hash_metadata2[2 * (sizeof(NX_MD5) + sizeof(NX_SHA1) + sizeof(NX_SHA256))];
static UINT init_number = 0;
void nx_secure_tls_test_init_utility(NX_SECURE_TLS_SESSION *tls_session)
{
UINT status;
/* Create a TLS session for our socket. */
if(init_number == 0)
{
status = nx_secure_tls_session_create(tls_session,
&tls_methods,
crypto_metadata,
sizeof(crypto_metadata),
authentication_metadata,
sizeof(authentication_metadata),
public_cipher_metadata,
sizeof(public_cipher_metadata),
handshake_hash_metadata,
sizeof(handshake_hash_metadata));
init_number++;
}
else
{
status = nx_secure_tls_session_create(tls_session,
&tls_methods,
crypto_metadata2,
sizeof(crypto_metadata2),
authentication_metadata2,
sizeof(authentication_metadata2),
public_cipher_metadata2,
sizeof(public_cipher_metadata2),
handshake_hash_metadata2,
sizeof(handshake_hash_metadata2));
}
if(status != NX_SUCCESS)
{
printf("Failure in TLS initialization. \n");
}
}
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