C++ (Cpp) DCRYPTO_rsa_sign示例

示例#1

文件： rsa.c 项目： littlebabay/chrome-ec

CRYPT_RESULT _cpri__SignRSA(uint32_t *out_len, uint8_t *out,
			RSA_KEY *key, TPM_ALG_ID padding_alg,
			TPM_ALG_ID hash_alg, uint32_t in_len, uint8_t *in)
{
	struct RSA rsa;
	enum padding_mode padding;
	enum hashing_mode hashing;

	if (!check_key(key))
		return CRYPT_FAIL;
	if (!check_sign_params(padding_alg, hash_alg, &padding, &hashing))
		return CRYPT_FAIL;

	rsa.e = key->exponent;
	rsa.N.dmax = key->publicKey->size / sizeof(uint32_t);
	rsa.N.d = (struct access_helper *) &key->publicKey->buffer;
	rsa.d.dmax = key->privateKey->size / sizeof(uint32_t);
	rsa.d.d = (struct access_helper *) &key->privateKey->buffer;

	if (DCRYPTO_rsa_sign(&rsa, out, out_len, in, in_len, padding, hashing))
		return CRYPT_SUCCESS;
	else
		return CRYPT_FAIL;
}

示例#2

文件： rsa.c 项目： coreboot/chrome-ec

CRYPT_RESULT _cpri__SignRSA(uint32_t *out_len, uint8_t *out,
			RSA_KEY *key, TPM_ALG_ID padding_alg,
			TPM_ALG_ID hash_alg, uint32_t in_len, uint8_t *in)
{
	struct RSA rsa;
	enum padding_mode padding;
	enum hashing_mode hashing;
	int result;

	if (!check_key(key))
		return CRYPT_FAIL;
	if (!check_sign_params(padding_alg, hash_alg, &padding, &hashing))
		return CRYPT_FAIL;

	reverse_tpm2b(key->publicKey);
	reverse_tpm2b(key->privateKey);

	rsa.e = key->exponent;
	rsa.N.dmax = key->publicKey->size / sizeof(uint32_t);
	rsa.N.d = (struct access_helper *) &key->publicKey->buffer;
	rsa.d.dmax = key->privateKey->size / sizeof(uint32_t);
	rsa.d.d = (struct access_helper *) &key->privateKey->buffer;

	/* TPM2 wrapper function fails to initialize out_len! */
	*out_len = key->publicKey->size;
	result = DCRYPTO_rsa_sign(&rsa, out, out_len, in, in_len,
				padding, hashing);

	reverse_tpm2b(key->publicKey);
	reverse_tpm2b(key->privateKey);

	if (result)
		return CRYPT_SUCCESS;
	else
		return CRYPT_FAIL;
}