C++ (Cpp) asn1_unwrap Beispiele

Beispiel #1

Datei: test_asn1.c Projekt: netklass/strongswan

END_TEST

/*******************************************************************************
 * unwrap
 */

START_TEST(test_asn1_unwrap)
{
	chunk_t c0 = chunk_from_chars(0x30);
	chunk_t c1 = chunk_from_chars(0x30, 0x01, 0xaa);
	chunk_t c2 = chunk_from_chars(0x30, 0x80);
	chunk_t c3 = chunk_from_chars(0x30, 0x81);
	chunk_t c4 = chunk_from_chars(0x30, 0x81, 0x01, 0xaa);
	chunk_t c5 = chunk_from_chars(0x30, 0x81, 0x02, 0xaa);

	chunk_t inner;
	chunk_t inner_ref = chunk_from_chars(0xaa);

	ck_assert(asn1_unwrap(&c0, &inner) == ASN1_INVALID);

	ck_assert(asn1_unwrap(&c1, &inner) == ASN1_SEQUENCE);

	ck_assert(chunk_equals(inner, inner_ref));

	ck_assert(asn1_unwrap(&c2, &inner) == ASN1_INVALID);

	ck_assert(asn1_unwrap(&c3, &inner) == ASN1_INVALID);

	ck_assert(asn1_unwrap(&c4, &inner) == ASN1_SEQUENCE);

	ck_assert(chunk_equals(inner, inner_ref));

	ck_assert(asn1_unwrap(&c5, &inner) == ASN1_INVALID);
}

Beispiel #2

Datei: sshkey_encoder.c Projekt: Ferryworld/strongswan

/**
 * Encode the public key as Base64 encoded SSH key blob
 */
static bool build_public_key(chunk_t *encoding, va_list args)
{
	bio_writer_t *writer;
	chunk_t n, e;

	if (cred_encoding_args(args, CRED_PART_RSA_MODULUS, &n,
						   CRED_PART_RSA_PUB_EXP, &e, CRED_PART_END))
	{
		writer = bio_writer_create(0);
		writer->write_data32(writer, chunk_from_str("ssh-rsa"));

		writer->write_data32(writer, e);
		writer->write_data32(writer, n);
		*encoding = chunk_to_base64(writer->get_buf(writer), NULL);
		writer->destroy(writer);
		return TRUE;
	}
	else if (cred_encoding_args(args, CRED_PART_EDDSA_PUB_ASN1_DER, &n,
								CRED_PART_END))
	{
		chunk_t alg;
		char *prefix;
		int oid;

		/* parse subjectPublicKeyInfo */
		if (asn1_unwrap(&n, &n) != ASN1_SEQUENCE)
		{
			return FALSE;
		}
		oid = asn1_parse_algorithmIdentifier(n, 1, NULL);
		switch (oid)
		{
			case OID_ED25519:
				prefix = "ssh-ed25519";
				break;
			case OID_ED448:
				prefix = "ssh-ed448";
				break;
			default:
				return FALSE;
		}
		if (asn1_unwrap(&n, &alg) != ASN1_SEQUENCE ||
			asn1_unwrap(&n, &n) != ASN1_BIT_STRING || !n.len)
		{
			return FALSE;
		}
		writer = bio_writer_create(0);
		writer->write_data32(writer, chunk_from_str(prefix));
		writer->write_data32(writer, chunk_skip(n, 1));
		*encoding = chunk_to_base64(writer->get_buf(writer), NULL);
		writer->destroy(writer);
		return TRUE;
	}
	else if (cred_encoding_args(args, CRED_PART_ECDSA_PUB_ASN1_DER, &n,
								CRED_PART_END))
	{
		chunk_t params, alg, q;
		int oid;

		/* parse subjectPublicKeyInfo */
		if (asn1_unwrap(&n, &n) != ASN1_SEQUENCE)
		{
			return FALSE;
		}
		oid = asn1_parse_algorithmIdentifier(n, 1, &params);
		if (oid != OID_EC_PUBLICKEY ||
			asn1_unwrap(&params, &params) != ASN1_OID)
		{
			return FALSE;
		}
		oid = asn1_known_oid(params);
		if (oid == OID_UNKNOWN)
		{
			return FALSE;
		}
		if (asn1_unwrap(&n, &alg) != ASN1_SEQUENCE ||
			asn1_unwrap(&n, &q) != ASN1_BIT_STRING)
		{
			return FALSE;
		}
		writer = bio_writer_create(0);
		write_ec_identifier(writer, ECDSA_PREFIX, oid, params);
		write_ec_identifier(writer, "", oid, params);

		q = chunk_skip_zero(q);
		writer->write_data32(writer, q);
		*encoding = chunk_to_base64(writer->get_buf(writer), NULL);
		writer->destroy(writer);
		return TRUE;
	}
	return FALSE;
}