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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 "crypto/s2n_hash.h"
/* Codes from http://www.iana.org/assignments/tls-parameters/tls-parameters.xhtml#tls-parameters-5 */
#define TLS_NULL_WITH_NULL_NULL 0x00, 0x00
#define TLS_RSA_WITH_AES_256_CBC_SHA256 0x00, 0x3D
#define TLS_RSA_WITH_AES_256_CBC_SHA 0x00, 0x35
#define TLS_RSA_WITH_AES_128_CBC_SHA256 0x00, 0x3C
#define TLS_RSA_WITH_AES_128_CBC_SHA 0x00, 0x2F
#define TLS_RSA_WITH_3DES_EDE_CBC_SHA 0x00, 0x0A
#define TLS_RSA_WITH_RC4_128_MD5 0x00, 0x04
#define TLS_RSA_WITH_RC4_128_SHA 0x00, 0x05
#define TLS_DHE_RSA_WITH_AES_128_CBC_SHA 0x00, 0x33
#define TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 0x00, 0x67
#define TLS_DHE_RSA_WITH_AES_256_CBC_SHA 0x00, 0x39
#define TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 0x00, 0x6B
#define TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA 0x00, 0x16
#define TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA 0xC0, 0x09
#define TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 0xC0, 0x23
#define TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA 0xC0, 0x0A
#define TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384 0xC0, 0x24
#define TLS_ECDHE_RSA_WITH_RC4_128_SHA 0xC0, 0x11
#define TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA 0xC0, 0x13
#define TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 0xC0, 0x27
#define TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA 0xC0, 0x14
#define TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 0xC0, 0x28
#define TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA 0xC0, 0x12
#define TLS_RSA_WITH_AES_128_GCM_SHA256 0x00, 0x9C
#define TLS_RSA_WITH_AES_256_GCM_SHA384 0x00, 0x9D
#define TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 0x00, 0x9E
#define TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 0x00, 0x9F
#define TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 0xC0, 0x2B
#define TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 0xC0, 0x2C
#define TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 0xC0, 0x2F
#define TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 0xC0, 0x30
#define TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 0xCC, 0xA8
#define TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 0xCC, 0xA9
#define TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256 0xCC, 0xAA
/* TLS 1.2 hybrid post-quantum definitions from https://tools.ietf.org/html/draft-campagna-tls-bike-sike-hybrid */
#define TLS_ECDHE_BIKE_RSA_WITH_AES_256_GCM_SHA384 0xFF, 0x04
#define TLS_ECDHE_SIKE_RSA_WITH_AES_256_GCM_SHA384 0xFF, 0x08
#define TLS_ECDHE_KYBER_RSA_WITH_AES_256_GCM_SHA384 0xFF, 0x0C
#define TLS_EXTENSION_PQ_KEM_PARAMETERS 0xFE01
#define TLS_PQ_KEM_EXTENSION_ID_BIKE1_L1_R1 1
#define TLS_PQ_KEM_EXTENSION_ID_BIKE1_L1_R2 13
#define TLS_PQ_KEM_EXTENSION_ID_SIKE_P503_R1 10
#define TLS_PQ_KEM_EXTENSION_ID_SIKE_P434_R2 19
#define TLS_PQ_KEM_EXTENSION_ID_KYBER_512_R2 23
#define TLS_PQ_KEM_EXTENSION_ID_KYBER_512_90S_R2 24
/* TLS 1.3 hybrid post-quantum definitions are from the proposed reserved range defined
* in https://tools.ietf.org/html/draft-stebila-tls-hybrid-design. Values for interoperability
* are defined in https://docs.google.com/spreadsheets/d/12YarzaNv3XQNLnvDsWLlRKwtZFhRrDdWf36YlzwrPeg/edit#gid=0. */
#define TLS_PQ_KEM_GROUP_ID_X25519_SIKE_P434_R2 0x2F27
#define TLS_PQ_KEM_GROUP_ID_SECP256R1_SIKE_P434_R2 0x2F1F
#define TLS_PQ_KEM_GROUP_ID_X25519_BIKE1_L1_R2 0x2F28
#define TLS_PQ_KEM_GROUP_ID_SECP256R1_BIKE1_L1_R2 0x2F23
#define TLS_PQ_KEM_GROUP_ID_X25519_KYBER_512_R2 0x2F26
#define TLS_PQ_KEM_GROUP_ID_SECP256R1_KYBER_512_R2 0x2F0F
/* From https://tools.ietf.org/html/rfc7507 */
#define TLS_FALLBACK_SCSV 0x56, 0x00
#define TLS_EMPTY_RENEGOTIATION_INFO_SCSV 0x00, 0xff
/* TLS 1.3 cipher suites from https://tools.ietf.org/html/rfc8446#appendix-B.4 */
#define TLS_AES_128_GCM_SHA256 0x13, 0x01
#define TLS_AES_256_GCM_SHA384 0x13, 0x02
#define TLS_CHACHA20_POLY1305_SHA256 0x13, 0x03
#define TLS_AES_128_CCM_SHA256 0x13, 0x04
#define TLS_AES_128_CCM_8_SHA256 0x13, 0x05
/* TLS extensions from https://www.iana.org/assignments/tls-extensiontype-values/tls-extensiontype-values.xhtml */
#define TLS_EXTENSION_SERVER_NAME 0
#define TLS_EXTENSION_MAX_FRAG_LEN 1
#define TLS_EXTENSION_STATUS_REQUEST 5
#define TLS_EXTENSION_SUPPORTED_GROUPS 10
#define TLS_EXTENSION_EC_POINT_FORMATS 11
#define TLS_EXTENSION_SIGNATURE_ALGORITHMS 13
#define TLS_EXTENSION_ALPN 16
#define TLS_EXTENSION_SCT_LIST 18
#define TLS_EXTENSION_SESSION_TICKET 35
#define TLS_EXTENSION_PRE_SHARED_KEY 41
#define TLS_EXTENSION_CERT_AUTHORITIES 47
#define TLS_EXTENSION_RENEGOTIATION_INFO 65281
/* TLS 1.3 extensions from https://tools.ietf.org/html/rfc8446#section-4.2 */
#define TLS_EXTENSION_SUPPORTED_VERSIONS 43
#define TLS_EXTENSION_COOKIE 44
#define TLS_EXTENSION_KEY_SHARE 51
/* QUIC-TLS extension from https://tools.ietf.org/html/draft-ietf-quic-tls-29#section-8.2 */
#define TLS_QUIC_TRANSPORT_PARAMETERS 65535
/* TLS Signature Algorithms - RFC 5246 7.4.1.4.1 */
/* https://www.iana.org/assignments/tls-parameters/tls-parameters.xhtml#tls-parameters-16 */
#define TLS_SIGNATURE_ALGORITHM_ANONYMOUS 0
#define TLS_SIGNATURE_ALGORITHM_RSA 1
#define TLS_SIGNATURE_ALGORITHM_DSA 2
#define TLS_SIGNATURE_ALGORITHM_ECDSA 3
#define TLS_SIGNATURE_ALGORITHM_PRIVATE 224
#define TLS_SIGNATURE_ALGORITHM_COUNT 4
/* TLS Hash Algorithm - https://tools.ietf.org/html/rfc5246#section-7.4.1.4.1 */
/* https://www.iana.org/assignments/tls-parameters/tls-parameters.xhtml#tls-parameters-18 */
#define TLS_HASH_ALGORITHM_ANONYMOUS 0
#define TLS_HASH_ALGORITHM_MD5 1
#define TLS_HASH_ALGORITHM_SHA1 2
#define TLS_HASH_ALGORITHM_SHA224 3
#define TLS_HASH_ALGORITHM_SHA256 4
#define TLS_HASH_ALGORITHM_SHA384 5
#define TLS_HASH_ALGORITHM_SHA512 6
#define TLS_HASH_ALGORITHM_COUNT 7
/* TLS SignatureScheme (Backwards compatible with SigHash and SigAlg values above) */
/* Defined here: https://www.iana.org/assignments/tls-parameters/tls-parameters.xhtml#tls-signaturescheme */
#define TLS_SIGNATURE_SCHEME_RSA_PKCS1_SHA1 0x0201
#define TLS_SIGNATURE_SCHEME_RSA_PKCS1_SHA224 0x0301
#define TLS_SIGNATURE_SCHEME_RSA_PKCS1_SHA256 0x0401
#define TLS_SIGNATURE_SCHEME_RSA_PKCS1_SHA384 0x0501
#define TLS_SIGNATURE_SCHEME_RSA_PKCS1_SHA512 0x0601
/* In TLS 1.0 and 1.1 the hard-coded default scheme was RSA_PKCS1_MD5_SHA1, but there's no IANA defined backwards
* compatible value for that Scheme for TLS 1.2 and 1.3. So we define an internal value in the private range that won't
* match anything in the valid range so that all TLS Versions can use the same SignatureScheme negotiation abstraction
* layer. This scheme isn't in any preference list, so it can't be negotiated even if a client sent it in its pref list. */
#define TLS_SIGNATURE_SCHEME_PRIVATE_INTERNAL_RSA_PKCS1_MD5_SHA1 0xFFFF
/* TLS 1.2 Backwards Compatible ECDSA Schemes */
#define TLS_SIGNATURE_SCHEME_ECDSA_SHA1 0x0203
#define TLS_SIGNATURE_SCHEME_ECDSA_SHA224 0x0303
#define TLS_SIGNATURE_SCHEME_ECDSA_SHA256 0x0403
#define TLS_SIGNATURE_SCHEME_ECDSA_SHA384 0x0503
#define TLS_SIGNATURE_SCHEME_ECDSA_SHA512 0x0603
/* TLS 1.3 ECDSA Signature Schemes */
#define TLS_SIGNATURE_SCHEME_ECDSA_SECP256R1_SHA256 0x0403
#define TLS_SIGNATURE_SCHEME_ECDSA_SECP384R1_SHA384 0x0503
#define TLS_SIGNATURE_SCHEME_ECDSA_SECP521R1_SHA512 0x0603
#define TLS_SIGNATURE_SCHEME_RSA_PSS_RSAE_SHA256 0x0804
#define TLS_SIGNATURE_SCHEME_RSA_PSS_RSAE_SHA384 0x0805
#define TLS_SIGNATURE_SCHEME_RSA_PSS_RSAE_SHA512 0x0806
#define TLS_SIGNATURE_SCHEME_ED25519 0x0807
#define TLS_SIGNATURE_SCHEME_ED448 0x0808
#define TLS_SIGNATURE_SCHEME_RSA_PSS_PSS_SHA256 0x0809
#define TLS_SIGNATURE_SCHEME_RSA_PSS_PSS_SHA384 0x080A
#define TLS_SIGNATURE_SCHEME_RSA_PSS_PSS_SHA512 0x080B
#define TLS_SIGNATURE_SCHEME_LEN 2
#define TLS_SIGNATURE_SCHEME_LIST_MAX_LEN 64
/* The TLS record types we support */
#define SSLv2_CLIENT_HELLO 1
#define TLS_CHANGE_CIPHER_SPEC 20
#define TLS_ALERT 21
#define TLS_HANDSHAKE 22
#define TLS_APPLICATION_DATA 23
/* Elliptic curve formats from http://www.iana.org/assignments/tls-parameters/tls-parameters.xhtml#tls-parameters-9
* Only uncompressed is supported.
*/
#define TLS_EC_FORMAT_UNCOMPRESSED 0
#define TLS_EC_FORMAT_ANSIX962_COMPRESSED_PRIME 1
#define TLS_EC_FORMAT_ANSIX962_COMPRESSED_CHAR2 2
/* Elliptic curves from https://www.iana.org/assignments/tls-parameters/tls-parameters.xhtml#tls-parameters-8 */
#define TLS_EC_CURVE_SECP_256_R1 23
#define TLS_EC_CURVE_SECP_384_R1 24
#define TLS_EC_CURVE_SECP_521_R1 25
#define TLS_EC_CURVE_ECDH_X25519 29
/* Ethernet maximum transmission unit (MTU)
* MTU is usually associated with the Ethernet protocol,
* where a 1500-byte packet is the largest allowed in it
*/
#define ETH_MTU 1500
#define IP_V4_HEADER_LENGTH 20
#define IP_V6_HEADER_LENGTH 40
#define TCP_HEADER_LENGTH 20
#define TCP_OPTIONS_LENGTH 40
/* The maximum size of a TLS record is 16389 bytes. This is; 1 byte for content
* type, 2 bytes for the protocol version, 2 bytes for the length field,
* and then up to 2^14 for the encrypted+compressed payload data.
*/
#define S2N_TLS_RECORD_HEADER_LENGTH 5
#define S2N_TLS_MAXIMUM_FRAGMENT_LENGTH 16384
/* Maximum TLS record length allows for 2048 octets of compression expansion and padding */
#define S2N_TLS_MAXIMUM_RECORD_LENGTH (S2N_TLS_MAXIMUM_FRAGMENT_LENGTH + S2N_TLS_RECORD_HEADER_LENGTH + 2048)
#define S2N_TLS_MAX_FRAG_LEN_EXT_NONE 0
/* TLS1.3 has a max fragment length of 2^14 + 1 byte for the content type */
#define S2N_TLS13_MAXIMUM_FRAGMENT_LENGTH 16385
/* Max encryption overhead is 255 for AEAD padding */
#define S2N_TLS13_MAXIMUM_RECORD_LENGTH (S2N_TLS13_MAXIMUM_FRAGMENT_LENGTH + S2N_TLS_RECORD_HEADER_LENGTH + 255)
/* The maximum size of an SSL2 message is 2^14 - 1, as neither of the first two
* bits in the length field are usable. Per;
* http://www-archive.mozilla.org/projects/security/pki/nss/ssl/draft02.html
* section 1.1
*/
#define S2N_SSL2_RECORD_HEADER_LENGTH 2
#define S2N_SSL2_MAXIMUM_MESSAGE_LENGTH 16383
#define S2N_SSL2_MAXIMUM_RECORD_LENGTH (S2N_SSL2_MAXIMUM_MESSAGE_LENGTH + S2N_SSL2_RECORD_HEADER_LENGTH)
/* s2n can use a "small" record length that is aligned to the dominant internet MTU;
* 1500 bytes, minus 20 bytes for an IP header, minus 20 bytes for a tcp
* header and 20 bytes for tcp/ip options (timestamp, sack etc) and a "large" record
* length that is designed to maximize throughput (fewer MACs per byte transferred
* and better efficiency of crypto engines).
*/
#define S2N_SMALL_RECORD_LENGTH (1500 - 20 - 20 - 20)
#define S2N_SMALL_FRAGMENT_LENGTH (S2N_SMALL_RECORD_LENGTH - S2N_TLS_RECORD_HEADER_LENGTH)
/* Testing in the wild has found 8k max record sizes give a good balance of low latency
* and throughput.
*/
#define S2N_DEFAULT_RECORD_LENGTH 8092
#define S2N_DEFAULT_FRAGMENT_LENGTH (S2N_DEFAULT_RECORD_LENGTH - S2N_TLS_RECORD_HEADER_LENGTH)
/* S2N_LARGE_RECORD_LENGTH is used for initializing output buffers, we use the largest
* possible value of all supported protocols to avoid branching at runtime
*/
#define S2N_LARGE_RECORD_LENGTH S2N_TLS_MAXIMUM_RECORD_LENGTH
#define S2N_LARGE_FRAGMENT_LENGTH S2N_TLS_MAXIMUM_FRAGMENT_LENGTH
#define S2N_TLS13_LARGE_FRAGMENT_LENGTH S2N_TLS13_MAXIMUM_FRAGMENT_LENGTH
/* Cap dynamic record resize threshold to 8M */
#define S2N_TLS_MAX_RESIZE_THRESHOLD (1024 * 1024 * 8)
/* Put a 64k cap on the size of any handshake message */
#define S2N_MAXIMUM_HANDSHAKE_MESSAGE_LENGTH (64 * 1024)
/* Maximum size for full encoded TLSInnerPlaintext (https://tools.ietf.org/html/rfc8446#section-5.4) */
#define S2N_MAXIMUM_INNER_PLAINTEXT_LENGTH ((1 << 14) + 1)
/* Alert messages are always 2 bytes long */
#define S2N_ALERT_LENGTH 2
/* Handshake messages have their own header too */
#define TLS_HANDSHAKE_HEADER_LENGTH 4
#define S2N_MAX_SERVER_NAME 255
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