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tls_crypto.c
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tls_crypto.c
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/*
* Copyright (C) 2020 Tobias Brunner
* Copyright (C) 2020-2021 Pascal Knecht
* Copyright (C) 2020 Méline Sieber
* Copyright (C) 2010-2014 Martin Willi
*
* Copyright (C) secunet Security Networks AG
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#include "tls_crypto.h"
#include "tls_hkdf.h"
#include <utils/debug.h>
#include <plugins/plugin_feature.h>
#include <collections/hashtable.h>
#include <collections/array.h>
ENUM_BEGIN(tls_cipher_suite_names, TLS_NULL_WITH_NULL_NULL,
TLS_DH_anon_WITH_3DES_EDE_CBC_SHA,
"TLS_NULL_WITH_NULL_NULL",
"TLS_RSA_WITH_NULL_MD5",
"TLS_RSA_WITH_NULL_SHA",
"TLS_RSA_EXPORT_WITH_RC4_40_MD5",
"TLS_RSA_WITH_RC4_128_MD5",
"TLS_RSA_WITH_RC4_128_SHA",
"TLS_RSA_EXPORT_WITH_RC2_CBC_40_MD5",
"TLS_RSA_WITH_IDEA_CBC_SHA",
"TLS_RSA_EXPORT_WITH_DES40_CBC_SHA",
"TLS_RSA_WITH_DES_CBC_SHA",
"TLS_RSA_WITH_3DES_EDE_CBC_SHA",
"TLS_DH_DSS_EXPORT_WITH_DES40_CBC_SHA",
"TLS_DH_DSS_WITH_DES_CBC_SHA",
"TLS_DH_DSS_WITH_3DES_EDE_CBC_SHA",
"TLS_DH_RSA_EXPORT_WITH_DES40_CBC_SHA",
"TLS_DH_RSA_WITH_DES_CBC_SHA",
"TLS_DH_RSA_WITH_3DES_EDE_CBC_SHA",
"TLS_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA",
"TLS_DHE_DSS_WITH_DES_CBC_SHA",
"TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA",
"TLS_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA",
"TLS_DHE_RSA_WITH_DES_CBC_SHA",
"TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA",
"TLS_DH_anon_EXPORT_WITH_RC4_40_MD5",
"TLS_DH_anon_WITH_RC4_128_MD5",
"TLS_DH_anon_EXPORT_WITH_DES40_CBC_SHA",
"TLS_DH_anon_WITH_DES_CBC_SHA",
"TLS_DH_anon_WITH_3DES_EDE_CBC_SHA");
ENUM_NEXT(tls_cipher_suite_names, TLS_KRB5_WITH_DES_CBC_SHA,
TLS_DH_anon_WITH_CAMELLIA_128_CBC_SHA,
TLS_DH_anon_WITH_3DES_EDE_CBC_SHA,
"TLS_KRB5_WITH_DES_CBC_SHA",
"TLS_KRB5_WITH_3DES_EDE_CBC_SHA",
"TLS_KRB5_WITH_RC4_128_SHA",
"TLS_KRB5_WITH_IDEA_CBC_SHA",
"TLS_KRB5_WITH_DES_CBC_MD5",
"TLS_KRB5_WITH_3DES_EDE_CBC_MD5",
"TLS_KRB5_WITH_RC4_128_MD5",
"TLS_KRB5_WITH_IDEA_CBC_MD5",
"TLS_KRB5_EXPORT_WITH_DES_CBC_40_SHA",
"TLS_KRB5_EXPORT_WITH_RC2_CBC_40_SHA",
"TLS_KRB5_EXPORT_WITH_RC4_40_SHA",
"TLS_KRB5_EXPORT_WITH_DES_CBC_40_MD5",
"TLS_KRB5_EXPORT_WITH_RC2_CBC_40_MD5",
"TLS_KRB5_EXPORT_WITH_RC4_40_MD5",
"TLS_PSK_WITH_NULL_SHA",
"TLS_DHE_PSK_WITH_NULL_SHA",
"TLS_RSA_PSK_WITH_NULL_SHA",
"TLS_RSA_WITH_AES_128_CBC_SHA",
"TLS_DH_DSS_WITH_AES_128_CBC_SHA",
"TLS_DH_RSA_WITH_AES_128_CBC_SHA",
"TLS_DHE_DSS_WITH_AES_128_CBC_SHA",
"TLS_DHE_RSA_WITH_AES_128_CBC_SHA",
"TLS_DH_anon_WITH_AES_128_CBC_SHA",
"TLS_RSA_WITH_AES_256_CBC_SHA",
"TLS_DH_DSS_WITH_AES_256_CBC_SHA",
"TLS_DH_RSA_WITH_AES_256_CBC_SHA",
"TLS_DHE_DSS_WITH_AES_256_CBC_SHA",
"TLS_DHE_RSA_WITH_AES_256_CBC_SHA",
"TLS_DH_anon_WITH_AES_256_CBC_SHA",
"TLS_RSA_WITH_NULL_SHA256",
"TLS_RSA_WITH_AES_128_CBC_SHA256",
"TLS_RSA_WITH_AES_256_CBC_SHA256",
"TLS_DH_DSS_WITH_AES_128_CBC_SHA256",
"TLS_DH_RSA_WITH_AES_128_CBC_SHA256",
"TLS_DHE_DSS_WITH_AES_128_CBC_SHA256",
"TLS_RSA_WITH_CAMELLIA_128_CBC_SHA",
"TLS_DH_DSS_WITH_CAMELLIA_128_CBC_SHA",
"TLS_DH_RSA_WITH_CAMELLIA_128_CBC_SHA",
"TLS_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA",
"TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA",
"TLS_DH_anon_WITH_CAMELLIA_128_CBC_SHA");
ENUM_NEXT(tls_cipher_suite_names, TLS_DHE_RSA_WITH_AES_128_CBC_SHA256,
TLS_DH_anon_WITH_AES_256_CBC_SHA256,
TLS_DH_anon_WITH_CAMELLIA_128_CBC_SHA,
"TLS_DHE_RSA_WITH_AES_128_CBC_SHA256",
"TLS_DH_DSS_WITH_AES_256_CBC_SHA256",
"TLS_DH_RSA_WITH_AES_256_CBC_SHA256",
"TLS_DHE_DSS_WITH_AES_256_CBC_SHA256",
"TLS_DHE_RSA_WITH_AES_256_CBC_SHA256",
"TLS_DH_anon_WITH_AES_128_CBC_SHA256",
"TLS_DH_anon_WITH_AES_256_CBC_SHA256");
ENUM_NEXT(tls_cipher_suite_names, TLS_RSA_WITH_CAMELLIA_256_CBC_SHA,
TLS_DH_anon_WITH_CAMELLIA_256_CBC_SHA256,
TLS_DH_anon_WITH_AES_256_CBC_SHA256,
"TLS_RSA_WITH_CAMELLIA_256_CBC_SHA",
"TLS_DH_DSS_WITH_CAMELLIA_256_CBC_SHA",
"TLS_DH_RSA_WITH_CAMELLIA_256_CBC_SHA",
"TLS_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA",
"TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA",
"TLS_DH_anon_WITH_CAMELLIA_256_CBC_SHA",
"TLS_PSK_WITH_RC4_128_SHA",
"TLS_PSK_WITH_3DES_EDE_CBC_SHA",
"TLS_PSK_WITH_AES_128_CBC_SHA",
"TLS_PSK_WITH_AES_256_CBC_SHA",
"TLS_DHE_PSK_WITH_RC4_128_SHA",
"TLS_DHE_PSK_WITH_3DES_EDE_CBC_SHA",
"TLS_DHE_PSK_WITH_AES_128_CBC_SHA",
"TLS_DHE_PSK_WITH_AES_256_CBC_SHA",
"TLS_RSA_PSK_WITH_RC4_128_SHA",
"TLS_RSA_PSK_WITH_3DES_EDE_CBC_SHA",
"TLS_RSA_PSK_WITH_AES_128_CBC_SHA",
"TLS_RSA_PSK_WITH_AES_256_CBC_SHA",
"TLS_RSA_WITH_SEED_CBC_SHA",
"TLS_DH_DSS_WITH_SEED_CBC_SHA",
"TLS_DH_RSA_WITH_SEED_CBC_SHA",
"TLS_DHE_DSS_WITH_SEED_CBC_SHA",
"TLS_DHE_RSA_WITH_SEED_CBC_SHA",
"TLS_DH_anon_WITH_SEED_CBC_SHA",
"TLS_RSA_WITH_AES_128_GCM_SHA256",
"TLS_RSA_WITH_AES_256_GCM_SHA384",
"TLS_DHE_RSA_WITH_AES_128_GCM_SHA256",
"TLS_DHE_RSA_WITH_AES_256_GCM_SHA384",
"TLS_DH_RSA_WITH_AES_128_GCM_SHA256",
"TLS_DH_RSA_WITH_AES_256_GCM_SHA384",
"TLS_DHE_DSS_WITH_AES_128_GCM_SHA256",
"TLS_DHE_DSS_WITH_AES_256_GCM_SHA384",
"TLS_DH_DSS_WITH_AES_128_GCM_SHA256",
"TLS_DH_DSS_WITH_AES_256_GCM_SHA384",
"TLS_DH_anon_WITH_AES_128_GCM_SHA256",
"TLS_DH_anon_WITH_AES_256_GCM_SHA384",
"TLS_PSK_WITH_AES_128_GCM_SHA256",
"TLS_PSK_WITH_AES_256_GCM_SHA384",
"TLS_DHE_PSK_WITH_AES_128_GCM_SHA256",
"TLS_DHE_PSK_WITH_AES_256_GCM_SHA384",
"TLS_RSA_PSK_WITH_AES_128_GCM_SHA256",
"TLS_RSA_PSK_WITH_AES_256_GCM_SHA384",
"TLS_PSK_WITH_AES_128_CBC_SHA256",
"TLS_PSK_WITH_AES_256_CBC_SHA384",
"TLS_PSK_WITH_NULL_SHA256",
"TLS_PSK_WITH_NULL_SHA384",
"TLS_DHE_PSK_WITH_AES_128_CBC_SHA256",
"TLS_DHE_PSK_WITH_AES_256_CBC_SHA384",
"TLS_DHE_PSK_WITH_NULL_SHA256",
"TLS_DHE_PSK_WITH_NULL_SHA384",
"TLS_RSA_PSK_WITH_AES_128_CBC_SHA256",
"TLS_RSA_PSK_WITH_AES_256_CBC_SHA384",
"TLS_RSA_PSK_WITH_NULL_SHA256",
"TLS_RSA_PSK_WITH_NULL_SHA384",
"TLS_RSA_WITH_CAMELLIA_128_CBC_SHA256",
"TLS_DH_DSS_WITH_CAMELLIA_128_CBC_SHA256",
"TLS_DH_RSA_WITH_CAMELLIA_128_CBC_SHA256",
"TLS_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA256",
"TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA256",
"TLS_DH_anon_WITH_CAMELLIA_128_CBC_SHA256",
"TLS_RSA_WITH_CAMELLIA_256_CBC_SHA256",
"TLS_DH_DSS_WITH_CAMELLIA_256_CBC_SHA256",
"TLS_DH_RSA_WITH_CAMELLIA_256_CBC_SHA256",
"TLS_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA256",
"TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA256",
"TLS_DH_anon_WITH_CAMELLIA_256_CBC_SHA256");
ENUM_NEXT(tls_cipher_suite_names, TLS_EMPTY_RENEGOTIATION_INFO_SCSV,
TLS_EMPTY_RENEGOTIATION_INFO_SCSV,
TLS_DH_anon_WITH_CAMELLIA_256_CBC_SHA256,
"TLS_EMPTY_RENEGOTIATION_INFO_SCSV");
ENUM_NEXT(tls_cipher_suite_names, TLS_AES_128_GCM_SHA256,
TLS_AES_128_CCM_8_SHA256,
TLS_EMPTY_RENEGOTIATION_INFO_SCSV,
"TLS_AES_128_GCM_SHA256",
"TLS_AES_256_GCM_SHA384",
"TLS_CHACHA20_POLY1305_SHA256",
"TLS_AES_128_CCM_SHA256",
"TLS_AES_128_CCM_8_SHA256");
ENUM_NEXT(tls_cipher_suite_names, TLS_ECDH_ECDSA_WITH_NULL_SHA,
TLS_ECDHE_PSK_WITH_NULL_SHA384,
TLS_AES_128_CCM_8_SHA256,
"TLS_ECDH_ECDSA_WITH_NULL_SHA",
"TLS_ECDH_ECDSA_WITH_RC4_128_SHA",
"TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA",
"TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA",
"TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA",
"TLS_ECDHE_ECDSA_WITH_NULL_SHA",
"TLS_ECDHE_ECDSA_WITH_RC4_128_SHA",
"TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA",
"TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA",
"TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA",
"TLS_ECDH_RSA_WITH_NULL_SHA",
"TLS_ECDH_RSA_WITH_RC4_128_SHA",
"TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA",
"TLS_ECDH_RSA_WITH_AES_128_CBC_SHA",
"TLS_ECDH_RSA_WITH_AES_256_CBC_SHA",
"TLS_ECDHE_RSA_WITH_NULL_SHA",
"TLS_ECDHE_RSA_WITH_RC4_128_SHA",
"TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA",
"TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA",
"TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA",
"TLS_ECDH_anon_WITH_NULL_SHA",
"TLS_ECDH_anon_WITH_RC4_128_SHA",
"TLS_ECDH_anon_WITH_3DES_EDE_CBC_SHA",
"TLS_ECDH_anon_WITH_AES_128_CBC_SHA",
"TLS_ECDH_anon_WITH_AES_256_CBC_SHA",
"TLS_SRP_SHA_WITH_3DES_EDE_CBC_SHA",
"TLS_SRP_SHA_RSA_WITH_3DES_EDE_CBC_SHA",
"TLS_SRP_SHA_DSS_WITH_3DES_EDE_CBC_SHA",
"TLS_SRP_SHA_WITH_AES_128_CBC_SHA",
"TLS_SRP_SHA_RSA_WITH_AES_128_CBC_SHA",
"TLS_SRP_SHA_DSS_WITH_AES_128_CBC_SHA",
"TLS_SRP_SHA_WITH_AES_256_CBC_SHA",
"TLS_SRP_SHA_RSA_WITH_AES_256_CBC_SHA",
"TLS_SRP_SHA_DSS_WITH_AES_256_CBC_SHA",
"TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256",
"TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384",
"TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256",
"TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384",
"TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256",
"TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384",
"TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256",
"TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384",
"TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256",
"TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384",
"TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256",
"TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384",
"TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256",
"TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384",
"TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256",
"TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384",
"TLS_ECDHE_PSK_WITH_RC4_128_SHA",
"TLS_ECDHE_PSK_WITH_3DES_EDE_CBC_SHA",
"TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA",
"TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA",
"TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA256",
"TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA384",
"TLS_ECDHE_PSK_WITH_NULL_SHA",
"TLS_ECDHE_PSK_WITH_NULL_SHA256",
"TLS_ECDHE_PSK_WITH_NULL_SHA384");
ENUM_NEXT(tls_cipher_suite_names, TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,
TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256,
TLS_ECDHE_PSK_WITH_NULL_SHA384,
"TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256",
"TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256",
"TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256");
ENUM_END(tls_cipher_suite_names, TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256);
ENUM(tls_hash_algorithm_names, TLS_HASH_NONE, TLS_HASH_SHA512,
"NONE",
"MD5",
"SHA1",
"SHA224",
"SHA256",
"SHA384",
"SHA512",
);
ENUM_BEGIN(tls_signature_scheme_names,
TLS_SIG_RSA_PKCS1_SHA1, TLS_SIG_RSA_PKCS1_SHA1,
"RSA_PKCS1_SHA1");
ENUM_NEXT(tls_signature_scheme_names,
TLS_SIG_ECDSA_SHA1, TLS_SIG_ECDSA_SHA1, TLS_SIG_RSA_PKCS1_SHA1,
"ECDSA_SHA1");
ENUM_NEXT(tls_signature_scheme_names,
TLS_SIG_RSA_PKCS1_SHA224, TLS_SIG_ECDSA_SHA224, TLS_SIG_ECDSA_SHA1,
"RSA_PKCS1_SHA224",
"DSA_SHA224",
"ECDSA_SHA224");
ENUM_NEXT(tls_signature_scheme_names,
TLS_SIG_RSA_PKCS1_SHA256, TLS_SIG_ECDSA_SHA256, TLS_SIG_ECDSA_SHA224,
"RSA_PKCS1_SHA256",
"DSA_SHA256",
"ECDSA_SHA256");
ENUM_NEXT(tls_signature_scheme_names,
TLS_SIG_RSA_PKCS1_SHA384, TLS_SIG_ECDSA_SHA384, TLS_SIG_ECDSA_SHA256,
"RSA_PKCS1_SHA384",
"DSA_SHA384",
"ECDSA_SHA384");
ENUM_NEXT(tls_signature_scheme_names,
TLS_SIG_RSA_PKCS1_SHA512, TLS_SIG_ECDSA_SHA512, TLS_SIG_ECDSA_SHA384,
"RSA_PKCS1_SHA512",
"DSA_SHA512",
"ECDSA_SHA512");
ENUM_NEXT(tls_signature_scheme_names,
TLS_SIG_RSA_PSS_RSAE_SHA256, TLS_SIG_RSA_PSS_PSS_SHA512, TLS_SIG_ECDSA_SHA512,
"RSA_PSS_RSAE_SHA256",
"RSA_PSS_RSAE_SHA384",
"RSA_PSS_RSAE_SHA512",
"ED25519",
"ED448",
"RSA_PSS_PSS_SHA256",
"RSA_PSS_PSS_SHA384",
"RSA_PSS_PSS_SHA512",
);
ENUM_END(tls_signature_scheme_names, TLS_SIG_RSA_PSS_PSS_SHA512);
ENUM_BEGIN(tls_client_certificate_type_names,
TLS_RSA_SIGN, TLS_DSS_EPHEMERAL_DH,
"RSA_SIGN",
"DSA_SIGN",
"RSA_FIXED_DH",
"DSS_FIXED_DH",
"RSA_EPHEMERAL_DH",
"DSS_EPHEMERAL_DH");
ENUM_NEXT(tls_client_certificate_type_names,
TLS_FORTEZZA_DMS, TLS_FORTEZZA_DMS, TLS_DSS_EPHEMERAL_DH,
"FORTEZZA_DMS");
ENUM_NEXT(tls_client_certificate_type_names,
TLS_ECDSA_SIGN, TLS_ECDSA_FIXED_ECDH, TLS_FORTEZZA_DMS,
"ECDSA_SIGN",
"RSA_FIXED_ECDH",
"ECDSA_FIXED_ECDH");
ENUM_END(tls_client_certificate_type_names, TLS_ECDSA_FIXED_ECDH);
ENUM(tls_ecc_curve_type_names, TLS_ECC_EXPLICIT_PRIME, TLS_ECC_NAMED_CURVE,
"EXPLICIT_PRIME",
"EXPLICIT_CHAR2",
"NAMED_CURVE",
);
ENUM_BEGIN(tls_named_group_names, TLS_SECT163K1, TLS_SECP521R1,
"SECT163K1",
"SECT163R1",
"SECT163R2",
"SECT193R1",
"SECT193R2",
"SECT233K1",
"SECT233R1",
"SECT239K1",
"SECT283K1",
"SECT283R1",
"SECT409K1",
"SECT409R1",
"SECT571K1",
"SECT571R1",
"SECP160K1",
"SECP160R1",
"SECP160R2",
"SECP192K1",
"SECP192R1",
"SECP224K1",
"SECP224R1",
"SECP256K1",
"SECP256R1",
"SECP384R1",
"SECP521R1",
);
ENUM_NEXT(tls_named_group_names, TLS_CURVE25519, TLS_CURVE448, TLS_SECP521R1,
"CURVE25519",
"CURVE448",
);
ENUM_NEXT(tls_named_group_names, TLS_FFDHE2048, TLS_FFDHE8192, TLS_CURVE448,
"FFDHE2048",
"FFDHE3072",
"FFDHE4096",
"FFDHE6144",
"FFDHE8192",
);
ENUM_END(tls_named_group_names, TLS_FFDHE8192);
ENUM(tls_ansi_point_format_names, TLS_ANSI_COMPRESSED, TLS_ANSI_HYBRID_Y,
"compressed",
"compressed y",
"uncompressed",
"uncompressed y",
"hybrid",
"hybrid y",
);
ENUM(tls_ec_point_format_names,
TLS_EC_POINT_UNCOMPRESSED, TLS_EC_POINT_ANSIX962_COMPRESSED_CHAR2,
"uncompressed",
"ansiX962 compressed prime",
"ansiX962 compressed char2",
);
typedef struct private_tls_crypto_t private_tls_crypto_t;
/**
* Private data of an tls_crypto_t object.
*/
struct private_tls_crypto_t {
/**
* Public tls_crypto_t interface.
*/
tls_crypto_t public;
/**
* Protection layer
*/
tls_protection_t *protection;
/**
* List of supported/acceptable cipher suites
*/
tls_cipher_suite_t *suites;
/**
* Number of supported suites
*/
int suite_count;
/**
* HKDF for TLS 1.3
*/
tls_hkdf_t *hkdf;
/**
* Selected cipher suite
*/
tls_cipher_suite_t suite;
/**
* RSA supported?
*/
bool rsa;
/**
* ECDSA supported?
*/
bool ecdsa;
/**
* TLS context
*/
tls_t *tls;
/**
* TLS session cache
*/
tls_cache_t *cache;
/**
* All handshake data concatenated
*/
chunk_t handshake;
/**
* Connection state TLS PRF
*/
tls_prf_t *prf;
/**
* AEAD transform for inbound traffic
*/
tls_aead_t *aead_in;
/**
* AEAD transform for outbound traffic
*/
tls_aead_t *aead_out;
/**
* EAP-[T]TLS MSK
*/
chunk_t msk;
/**
* ASCII string constant used as seed for EAP-[T]TLS MSK PRF
*/
char *msk_label;
};
typedef struct {
tls_cipher_suite_t suite;
key_type_t key;
key_exchange_method_t dh;
hash_algorithm_t hash;
pseudo_random_function_t prf;
integrity_algorithm_t mac;
encryption_algorithm_t encr;
size_t encr_size;
tls_version_t min_version;
tls_version_t max_version;
} suite_algs_t;
/**
* Mapping suites to a set of algorithms
*
* The order represents the descending preference of cipher suites and follows
* this rule set:
*
* 1. TLS 1.3 > Legacy TLS
* 2. AES > CAMELLIA > NULL
* 3. AES256 > AES128
* 4. GCM > CBC
* 5. ECDHE > DHE > NULL
* 6. ECDSA > RSA
* 7. SHA384 > SHA256 > SHA1
*
*/
static suite_algs_t suite_algs[] = {
/* Cipher suites of TLS 1.3: key exchange and authentication
* delegated to extensions, therefore KEY_ANY, KE_NONE, PRF_UNDEFINED */
{ TLS_AES_256_GCM_SHA384,
KEY_ANY, KE_NONE,
HASH_SHA384, PRF_UNDEFINED,
AUTH_HMAC_SHA2_384_384, ENCR_AES_GCM_ICV16, 32,
TLS_1_3, TLS_1_3,
},
{ TLS_AES_128_GCM_SHA256,
KEY_ANY, KE_NONE,
HASH_SHA256, PRF_UNDEFINED,
AUTH_HMAC_SHA2_256_256, ENCR_AES_GCM_ICV16, 16,
TLS_1_3, TLS_1_3,
},
{ TLS_CHACHA20_POLY1305_SHA256,
KEY_ANY, KE_NONE,
HASH_SHA256, PRF_UNDEFINED,
AUTH_HMAC_SHA2_256_256, ENCR_CHACHA20_POLY1305, 32,
TLS_1_3, TLS_1_3,
},
{ TLS_AES_128_CCM_SHA256,
KEY_ANY, KE_NONE,
HASH_SHA256, PRF_UNDEFINED,
AUTH_HMAC_SHA2_256_256, ENCR_AES_CCM_ICV16, 16,
TLS_1_3, TLS_1_3,
},
{ TLS_AES_128_CCM_8_SHA256,
KEY_ANY, KE_NONE,
HASH_SHA256, PRF_UNDEFINED,
AUTH_HMAC_SHA2_256_256, ENCR_AES_CCM_ICV8, 16,
TLS_1_3, TLS_1_3,
},
/* Legacy TLS cipher suites */
{ TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
KEY_ECDSA, ECP_384_BIT,
HASH_SHA384, PRF_HMAC_SHA2_384,
AUTH_UNDEFINED, ENCR_AES_GCM_ICV16, 32,
TLS_1_2, TLS_1_2,
},
{ TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384,
KEY_ECDSA, ECP_384_BIT,
HASH_SHA384, PRF_HMAC_SHA2_384,
AUTH_HMAC_SHA2_384_384, ENCR_AES_CBC, 32,
TLS_1_2, TLS_1_2,
},
{ TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,
KEY_ECDSA, ECP_384_BIT,
HASH_SHA256, PRF_HMAC_SHA2_256,
AUTH_HMAC_SHA1_160, ENCR_AES_CBC, 32,
TLS_1_0, TLS_1_2,
},
{ TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
KEY_ECDSA, ECP_256_BIT,
HASH_SHA256, PRF_HMAC_SHA2_256,
AUTH_UNDEFINED, ENCR_AES_GCM_ICV16, 16,
TLS_1_2, TLS_1_2,
},
{ TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256,
KEY_ECDSA, ECP_256_BIT,
HASH_SHA256, PRF_HMAC_SHA2_256,
AUTH_HMAC_SHA2_256_256, ENCR_AES_CBC, 16,
TLS_1_2, TLS_1_2,
},
{ TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
KEY_ECDSA, ECP_256_BIT,
HASH_SHA256, PRF_HMAC_SHA2_256,
AUTH_HMAC_SHA1_160, ENCR_AES_CBC, 16,
TLS_1_0, TLS_1_2,
},
{ TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
KEY_RSA, ECP_384_BIT,
HASH_SHA384, PRF_HMAC_SHA2_384,
AUTH_UNDEFINED, ENCR_AES_GCM_ICV16, 32,
TLS_1_2, TLS_1_2,
},
{ TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384,
KEY_RSA, ECP_384_BIT,
HASH_SHA384, PRF_HMAC_SHA2_384,
AUTH_HMAC_SHA2_384_384, ENCR_AES_CBC, 32,
TLS_1_2, TLS_1_2,
},
{ TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
KEY_RSA, ECP_384_BIT,
HASH_SHA256, PRF_HMAC_SHA2_256,
AUTH_HMAC_SHA1_160, ENCR_AES_CBC, 32,
TLS_1_0, TLS_1_2,
},
{ TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
KEY_RSA, ECP_256_BIT,
HASH_SHA256, PRF_HMAC_SHA2_256,
AUTH_UNDEFINED, ENCR_AES_GCM_ICV16, 16,
TLS_1_2, TLS_1_2,
},
{ TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,
KEY_RSA, ECP_256_BIT,
HASH_SHA256, PRF_HMAC_SHA2_256,
AUTH_HMAC_SHA2_256_256, ENCR_AES_CBC, 16,
TLS_1_2, TLS_1_2,
},
{ TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
KEY_RSA, ECP_256_BIT,
HASH_SHA256, PRF_HMAC_SHA2_256,
AUTH_HMAC_SHA1_160, ENCR_AES_CBC, 16,
TLS_1_0, TLS_1_2,
},
{ TLS_DHE_RSA_WITH_AES_256_GCM_SHA384,
KEY_RSA, MODP_4096_BIT,
HASH_SHA384, PRF_HMAC_SHA2_384,
AUTH_UNDEFINED, ENCR_AES_GCM_ICV16, 32,
TLS_1_2, TLS_1_2,
},
{ TLS_DHE_RSA_WITH_AES_256_CBC_SHA256,
KEY_RSA, MODP_4096_BIT,
HASH_SHA256, PRF_HMAC_SHA2_256,
AUTH_HMAC_SHA2_256_256, ENCR_AES_CBC, 32,
TLS_1_2, TLS_1_2,
},
{ TLS_DHE_RSA_WITH_AES_256_CBC_SHA,
KEY_RSA, MODP_3072_BIT,
HASH_SHA256, PRF_HMAC_SHA2_256,
AUTH_HMAC_SHA1_160, ENCR_AES_CBC, 32,
SSL_3_0, TLS_1_2,
},
{ TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA256,
KEY_RSA, MODP_4096_BIT,
HASH_SHA256, PRF_HMAC_SHA2_256,
AUTH_HMAC_SHA2_256_256, ENCR_CAMELLIA_CBC, 32,
TLS_1_2, TLS_1_2,
},
{ TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA,
KEY_RSA, MODP_3072_BIT,
HASH_SHA256, PRF_HMAC_SHA2_256,
AUTH_HMAC_SHA1_160, ENCR_CAMELLIA_CBC, 32,
SSL_3_0, TLS_1_2,
},
{ TLS_DHE_RSA_WITH_AES_128_GCM_SHA256,
KEY_RSA, MODP_3072_BIT,
HASH_SHA256, PRF_HMAC_SHA2_256,
AUTH_UNDEFINED, ENCR_AES_GCM_ICV16, 16,
TLS_1_2, TLS_1_2,
},
{ TLS_DHE_RSA_WITH_AES_128_CBC_SHA256,
KEY_RSA, MODP_3072_BIT,
HASH_SHA256, PRF_HMAC_SHA2_256,
AUTH_HMAC_SHA2_256_256, ENCR_AES_CBC, 16,
TLS_1_2, TLS_1_2,
},
{ TLS_DHE_RSA_WITH_AES_128_CBC_SHA,
KEY_RSA, MODP_2048_BIT,
HASH_SHA256,PRF_HMAC_SHA2_256,
AUTH_HMAC_SHA1_160, ENCR_AES_CBC, 16,
SSL_3_0, TLS_1_2,
},
{ TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA256,
KEY_RSA, MODP_3072_BIT,
HASH_SHA256, PRF_HMAC_SHA2_256,
AUTH_HMAC_SHA2_256_256, ENCR_CAMELLIA_CBC, 16,
TLS_1_2, TLS_1_2,
},
{ TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA,
KEY_RSA, MODP_2048_BIT,
HASH_SHA256, PRF_HMAC_SHA2_256,
AUTH_HMAC_SHA1_160, ENCR_CAMELLIA_CBC, 16,
SSL_3_0, TLS_1_2,
},
{ TLS_RSA_WITH_AES_256_GCM_SHA384,
KEY_RSA, KE_NONE,
HASH_SHA384, PRF_HMAC_SHA2_384,
AUTH_UNDEFINED, ENCR_AES_GCM_ICV16, 32,
TLS_1_2, TLS_1_2,
},
{ TLS_RSA_WITH_AES_256_CBC_SHA256,
KEY_RSA, KE_NONE,
HASH_SHA256, PRF_HMAC_SHA2_256,
AUTH_HMAC_SHA2_256_256, ENCR_AES_CBC, 32,
TLS_1_2, TLS_1_2,
},
{ TLS_RSA_WITH_AES_256_CBC_SHA,
KEY_RSA, KE_NONE,
HASH_SHA256, PRF_HMAC_SHA2_256,
AUTH_HMAC_SHA1_160, ENCR_AES_CBC, 32,
SSL_3_0, TLS_1_2,
},
{ TLS_RSA_WITH_AES_128_GCM_SHA256,
KEY_RSA, KE_NONE,
HASH_SHA256, PRF_HMAC_SHA2_256,
AUTH_UNDEFINED, ENCR_AES_GCM_ICV16, 16,
TLS_1_2, TLS_1_2,
},
{ TLS_RSA_WITH_AES_128_CBC_SHA256,
KEY_RSA, KE_NONE,
HASH_SHA256, PRF_HMAC_SHA2_256,
AUTH_HMAC_SHA2_256_256, ENCR_AES_CBC, 16,
TLS_1_2, TLS_1_2,
},
{ TLS_RSA_WITH_AES_128_CBC_SHA,
KEY_RSA, KE_NONE,
HASH_SHA256, PRF_HMAC_SHA2_256,
AUTH_HMAC_SHA1_160, ENCR_AES_CBC, 16,
SSL_3_0, TLS_1_2,
},
{ TLS_RSA_WITH_CAMELLIA_256_CBC_SHA256,
KEY_RSA, KE_NONE,
HASH_SHA256, PRF_HMAC_SHA2_256,
AUTH_HMAC_SHA2_256_256, ENCR_CAMELLIA_CBC, 32,
TLS_1_2, TLS_1_2,
},
{ TLS_RSA_WITH_CAMELLIA_256_CBC_SHA,
KEY_RSA, KE_NONE,
HASH_SHA256, PRF_HMAC_SHA2_256,
AUTH_HMAC_SHA1_160, ENCR_CAMELLIA_CBC, 32,
SSL_3_0, TLS_1_2,
},
{ TLS_RSA_WITH_CAMELLIA_128_CBC_SHA256,
KEY_RSA, KE_NONE,
HASH_SHA256, PRF_HMAC_SHA2_256,
AUTH_HMAC_SHA2_256_256, ENCR_CAMELLIA_CBC, 16,
TLS_1_2, TLS_1_2,
},
{ TLS_RSA_WITH_CAMELLIA_128_CBC_SHA,
KEY_RSA, KE_NONE,
HASH_SHA256, PRF_HMAC_SHA2_256,
AUTH_HMAC_SHA1_160, ENCR_CAMELLIA_CBC, 16,
SSL_3_0, TLS_1_2,
},
{ TLS_ECDHE_ECDSA_WITH_NULL_SHA,
KEY_ECDSA, ECP_256_BIT,
HASH_SHA256, PRF_HMAC_SHA2_256,
AUTH_HMAC_SHA1_160, ENCR_NULL, 0,
TLS_1_0, TLS_1_2,
},
{ TLS_ECDHE_RSA_WITH_NULL_SHA,
KEY_ECDSA, ECP_256_BIT,
HASH_SHA256, PRF_HMAC_SHA2_256,
AUTH_HMAC_SHA1_160, ENCR_NULL, 0,
TLS_1_0, TLS_1_2,
},
{ TLS_RSA_WITH_NULL_SHA256,
KEY_RSA, KE_NONE,
HASH_SHA256, PRF_HMAC_SHA2_256,
AUTH_HMAC_SHA2_256_256, ENCR_NULL, 0,
TLS_1_2, TLS_1_2,
},
{ TLS_RSA_WITH_NULL_SHA,
KEY_RSA, KE_NONE,
HASH_SHA256, PRF_HMAC_SHA2_256,
AUTH_HMAC_SHA1_160, ENCR_NULL, 0,
SSL_3_0, TLS_1_2,
},
};
/**
* Look up algorithms by a suite
*/
static suite_algs_t *find_suite(tls_cipher_suite_t suite)
{
int i;
for (i = 0; i < countof(suite_algs); i++)
{
if (suite_algs[i].suite == suite)
{
return &suite_algs[i];
}
}
return NULL;
}
/**
* Filter a suite list using a transform enumerator
*/
static void filter_suite(suite_algs_t suites[], int *count, int offset,
enumerator_t*(*create_enumerator)(crypto_factory_t*))
{
const char *plugin_name;
suite_algs_t current;
int *current_alg, i, remaining = 0;
enumerator_t *enumerator;
memset(¤t, 0, sizeof(current));
current_alg = (int*)((char*)¤t + offset);
for (i = 0; i < *count; i++)
{
if (create_enumerator == lib->crypto->create_crypter_enumerator &&
encryption_algorithm_is_aead(suites[i].encr))
{ /* filtering crypters, but current suite uses an AEAD, apply */
suites[remaining] = suites[i];
remaining++;
continue;
}
if (create_enumerator == lib->crypto->create_aead_enumerator &&
!encryption_algorithm_is_aead(suites[i].encr))
{ /* filtering AEADs, but current suite doesn't use one, apply */
suites[remaining] = suites[i];
remaining++;
continue;
}
enumerator = create_enumerator(lib->crypto);
while (enumerator->enumerate(enumerator, current_alg, &plugin_name))
{
if (current.encr && current.encr != suites[i].encr)
{
if (suites[i].encr != ENCR_NULL)
{ /* skip, ENCR does not match nor is NULL */
continue;
}
}
if (current.mac && current.mac != suites[i].mac)
{
if (suites[i].mac != AUTH_UNDEFINED)
{ /* skip, MAC does not match nor is it undefined */
continue;
}
}
if (current.prf && current.prf != suites[i].prf)
{
if (suites[i].prf != PRF_UNDEFINED)
{
/* skip, PRF does not match nor is it undefined */
continue;
}
}
if (current.hash && current.hash != suites[i].hash)
{ /* skip, hash does not match */
continue;
}
if (current.dh && current.dh != suites[i].dh)
{
if (suites[i].dh != KE_NONE &&
!(key_exchange_is_ecdh(current.dh) &&
key_exchange_is_ecdh(suites[i].dh)))
{ /* skip DH group, does not match nor NONE nor both ECDH */
continue;
}
}
/* suite supported, apply */
suites[remaining] = suites[i];
remaining++;
break;
}
enumerator->destroy(enumerator);
}
*count = remaining;
}
/**
* Purge NULL encryption cipher suites from list
*/
static void filter_null_suites(suite_algs_t suites[], int *count)
{
int i, remaining = 0;
for (i = 0; i < *count; i++)
{
if (suites[i].encr != ENCR_NULL)
{
suites[remaining] = suites[i];
remaining++;
}
}
*count = remaining;
}
/**
* Purge suites using a given key type
*/
static void filter_key_suites(private_tls_crypto_t *this,
suite_algs_t suites[], int *count, key_type_t key)
{
int i, remaining = 0;
DBG2(DBG_TLS, "disabling %N suites, no backend found", key_type_names, key);
for (i = 0; i < *count; i++)
{
if (suites[i].key != key)
{
suites[remaining] = suites[i];
remaining++;
}
}
*count = remaining;
}
/**
* Filter suites by key exchange user config
*/
static void filter_key_exchange_config_suites(private_tls_crypto_t *this,
suite_algs_t suites[], int *count)
{
enumerator_t *enumerator;
int i, remaining = 0;
char *token, *config;
config = lib->settings->get_str(lib->settings, "%s.tls.key_exchange", NULL,
lib->ns);
if (config)
{
for (i = 0; i < *count; i++)
{
enumerator = enumerator_create_token(config, ",", " ");
while (enumerator->enumerate(enumerator, &token))
{
if (strcaseeq(token, "ecdhe-ecdsa") &&
key_exchange_is_ecdh(suites[i].dh) &&
suites[i].key == KEY_ECDSA)
{
suites[remaining++] = suites[i];
break;
}
if (strcaseeq(token, "ecdhe-rsa") &&
key_exchange_is_ecdh(suites[i].dh) &&
suites[i].key == KEY_RSA)
{
suites[remaining++] = suites[i];
break;
}
if (strcaseeq(token, "dhe-rsa") &&
!key_exchange_is_ecdh(suites[i].dh) &&
suites[i].dh != KE_NONE &&
suites[i].key == KEY_RSA)
{
suites[remaining++] = suites[i];
break;
}
if (strcaseeq(token, "rsa") &&
suites[i].dh == KE_NONE &&
suites[i].key == KEY_RSA)
{
suites[remaining++] = suites[i];
break;
}
}
enumerator->destroy(enumerator);
}
*count = remaining;
}
}
/**
* Filter suites by cipher user config
*/
static void filter_cipher_config_suites(private_tls_crypto_t *this,
suite_algs_t suites[], int *count)
{
enumerator_t *enumerator;
int i, remaining = 0;
char *token, *config;
config = lib->settings->get_str(lib->settings, "%s.tls.cipher", NULL,
lib->ns);
if (config)
{
for (i = 0; i < *count; i++)
{
enumerator = enumerator_create_token(config, ",", " ");
while (enumerator->enumerate(enumerator, &token))
{
const proposal_token_t *tok;
tok = lib->proposal->get_token(lib->proposal, token);
if (tok != NULL && tok->type == ENCRYPTION_ALGORITHM &&
suites[i].encr == tok->algorithm &&
(!tok->keysize || suites[i].encr_size == tok->keysize / 8))
{
suites[remaining++] = suites[i];
break;
}
}
enumerator->destroy(enumerator);
}
*count = remaining;
}
}
/**
* Filter suites by mac user config
*/
static void filter_mac_config_suites(private_tls_crypto_t *this,
suite_algs_t suites[], int *count)
{
enumerator_t *enumerator;
int i, remaining = 0;
char *token, *config;
config = lib->settings->get_str(lib->settings, "%s.tls.mac", NULL,
lib->ns);
if (config)
{
for (i = 0; i < *count; i++)
{