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/*
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file 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.
*/
#pragma once
#include <s2n.h>
#include <strings.h>
#include "crypto/s2n_hash.h"
#include "crypto/s2n_signature.h"
#include "crypto/s2n_ecc_evp.h"
struct s2n_signature_scheme {
uint16_t iana_value;
s2n_hash_algorithm hash_alg;
s2n_signature_algorithm sig_alg;
uint8_t minimum_protocol_version;
uint8_t maximum_protocol_version;
uint16_t libcrypto_nid;
/* Curve is only specified for ECDSA Signatures */
struct s2n_ecc_named_curve const *signature_curve;
};
struct s2n_signature_preferences{
uint8_t count;
const struct s2n_signature_scheme *const *signature_schemes;
};
/* RSA PKCS1 */
/* s2n_rsa_pkcs1_md5_sha1 is not in any preference list, but it is needed since it's the default for TLS 1.0 and 1.1 if
* no SignatureScheme is sent. */
extern const struct s2n_signature_scheme s2n_rsa_pkcs1_md5_sha1;
extern const struct s2n_signature_scheme s2n_rsa_pkcs1_sha1;
extern const struct s2n_signature_scheme s2n_rsa_pkcs1_sha224;
extern const struct s2n_signature_scheme s2n_rsa_pkcs1_sha256;
extern const struct s2n_signature_scheme s2n_rsa_pkcs1_sha384;
extern const struct s2n_signature_scheme s2n_rsa_pkcs1_sha512;
/* TLS 1.2 Compatible ECDSA Schemes */
extern const struct s2n_signature_scheme s2n_ecdsa_sha1;
extern const struct s2n_signature_scheme s2n_ecdsa_sha224;
extern const struct s2n_signature_scheme s2n_ecdsa_sha256;
extern const struct s2n_signature_scheme s2n_ecdsa_sha384;
extern const struct s2n_signature_scheme s2n_ecdsa_sha512;
/* TLS 1.3 Compatible ECDSA Schemes */
extern const struct s2n_signature_scheme s2n_ecdsa_secp256r1_sha256;
extern const struct s2n_signature_scheme s2n_ecdsa_secp384r1_sha384;
extern const struct s2n_signature_scheme s2n_ecdsa_secp521r1_sha512;
/* RSA PSS */
/*
* Use RSA-PSS-RSAE instead of RSA-PSS-PSS in order to work with older certificates.
* For more info see: https://crypto.stackexchange.com/a/58708
*/
extern const struct s2n_signature_scheme s2n_rsa_pss_pss_sha256;
extern const struct s2n_signature_scheme s2n_rsa_pss_pss_sha384;
extern const struct s2n_signature_scheme s2n_rsa_pss_pss_sha512;
extern const struct s2n_signature_scheme s2n_rsa_pss_rsae_sha256;
extern const struct s2n_signature_scheme s2n_rsa_pss_rsae_sha384;
extern const struct s2n_signature_scheme s2n_rsa_pss_rsae_sha512;
extern const struct s2n_signature_preferences s2n_signature_preferences_20140601;
extern const struct s2n_signature_preferences s2n_signature_preferences_20200207;
extern const struct s2n_signature_preferences s2n_signature_preferences_20201021;
extern const struct s2n_signature_preferences s2n_signature_preferences_null;
extern const struct s2n_signature_preferences s2n_certificate_signature_preferences_20201110;
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