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/*
* Copyright 2019-2025 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <assert.h>
#include <string.h>
#include <openssl/core_dispatch.h>
#include <openssl/core_names.h>
/* For TLS1_VERSION etc */
#include <openssl/prov_ssl.h>
#include <openssl/params.h>
#include "internal/nelem.h"
#include "internal/tlsgroups.h"
#include "prov/providercommon.h"
#include "internal/e_os.h"
#include "crypto/ml_kem.h"
/*
* If none of EC, DH OR ML-KEM are available then we have no TLS-GROUP
* capabilities.
*/
#if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH) || \
!defined(OPENSSL_NO_ML_KEM)
typedef struct tls_group_constants_st {
unsigned int group_id; /* Group ID */
unsigned int secbits; /* Bits of security */
int mintls; /* Minimum TLS version, -1 unsupported */
int maxtls; /* Maximum TLS version (or 0 for undefined) */
int mindtls; /* Minimum DTLS version, -1 unsupported */
int maxdtls; /* Maximum DTLS version (or 0 for undefined) */
int is_kem; /* Indicates utility as KEM */
} TLS_GROUP_CONSTANTS;
/*
* The indices of entries in this table must be independent of which TLS groups
* we do or not support. It just lists basic facts about the groups, and is
* used by (numeric slot number) reference in the "param_group_list" below.
* Therefore, there must be no #ifdefs in this table, the index of each entry
* must be independent of compile-time options.
*
* For the FFDHE groups, the security bit values are as given by
* BN_security_bits(). For the ML-KEM hybrids these are the ML-KEM security
* bits.
*/
static const TLS_GROUP_CONSTANTS group_list[] = {
/* 0 */ { OSSL_TLS_GROUP_ID_sect163k1, 80, TLS1_VERSION, TLS1_2_VERSION, DTLS1_VERSION, DTLS1_2_VERSION, 0 },
/* 1 */ { OSSL_TLS_GROUP_ID_sect163r1, 80, TLS1_VERSION, TLS1_2_VERSION, DTLS1_VERSION, DTLS1_2_VERSION, 0 },
/* 2 */ { OSSL_TLS_GROUP_ID_sect163r2, 80, TLS1_VERSION, TLS1_2_VERSION, DTLS1_VERSION, DTLS1_2_VERSION, 0 },
/* 3 */ { OSSL_TLS_GROUP_ID_sect193r1, 80, TLS1_VERSION, TLS1_2_VERSION, DTLS1_VERSION, DTLS1_2_VERSION, 0 },
/* 4 */ { OSSL_TLS_GROUP_ID_sect193r2, 80, TLS1_VERSION, TLS1_2_VERSION, DTLS1_VERSION, DTLS1_2_VERSION, 0 },
/* 5 */ { OSSL_TLS_GROUP_ID_sect233k1, 112, TLS1_VERSION, TLS1_2_VERSION, DTLS1_VERSION, DTLS1_2_VERSION, 0 },
/* 6 */ { OSSL_TLS_GROUP_ID_sect233r1, 112, TLS1_VERSION, TLS1_2_VERSION, DTLS1_VERSION, DTLS1_2_VERSION, 0 },
/* 7 */ { OSSL_TLS_GROUP_ID_sect239k1, 112, TLS1_VERSION, TLS1_2_VERSION, DTLS1_VERSION, DTLS1_2_VERSION, 0 },
/* 8 */ { OSSL_TLS_GROUP_ID_sect283k1, 128, TLS1_VERSION, TLS1_2_VERSION, DTLS1_VERSION, DTLS1_2_VERSION, 0 },
/* 9 */ { OSSL_TLS_GROUP_ID_sect283r1, 128, TLS1_VERSION, TLS1_2_VERSION, DTLS1_VERSION, DTLS1_2_VERSION, 0 },
/* 10 */ { OSSL_TLS_GROUP_ID_sect409k1, 192, TLS1_VERSION, TLS1_2_VERSION, DTLS1_VERSION, DTLS1_2_VERSION, 0 },
/* 11 */ { OSSL_TLS_GROUP_ID_sect409r1, 192, TLS1_VERSION, TLS1_2_VERSION, DTLS1_VERSION, DTLS1_2_VERSION, 0 },
/* 12 */ { OSSL_TLS_GROUP_ID_sect571k1, 256, TLS1_VERSION, TLS1_2_VERSION, DTLS1_VERSION, DTLS1_2_VERSION, 0 },
/* 13 */ { OSSL_TLS_GROUP_ID_sect571r1, 256, TLS1_VERSION, TLS1_2_VERSION, DTLS1_VERSION, DTLS1_2_VERSION, 0 },
/* 14 */ { OSSL_TLS_GROUP_ID_secp160k1, 80, TLS1_VERSION, TLS1_2_VERSION, DTLS1_VERSION, DTLS1_2_VERSION, 0 },
/* 15 */ { OSSL_TLS_GROUP_ID_secp160r1, 80, TLS1_VERSION, TLS1_2_VERSION, DTLS1_VERSION, DTLS1_2_VERSION, 0 },
/* 16 */ { OSSL_TLS_GROUP_ID_secp160r2, 80, TLS1_VERSION, TLS1_2_VERSION, DTLS1_VERSION, DTLS1_2_VERSION, 0 },
/* 17 */ { OSSL_TLS_GROUP_ID_secp192k1, 80, TLS1_VERSION, TLS1_2_VERSION, DTLS1_VERSION, DTLS1_2_VERSION, 0 },
/* 18 */ { OSSL_TLS_GROUP_ID_secp192r1, 80, TLS1_VERSION, TLS1_2_VERSION, DTLS1_VERSION, DTLS1_2_VERSION, 0 },
/* 19 */ { OSSL_TLS_GROUP_ID_secp224k1, 112, TLS1_VERSION, TLS1_2_VERSION, DTLS1_VERSION, DTLS1_2_VERSION, 0 },
/* 20 */ { OSSL_TLS_GROUP_ID_secp224r1, 112, TLS1_VERSION, TLS1_2_VERSION, DTLS1_VERSION, DTLS1_2_VERSION, 0 },
/* 21 */ { OSSL_TLS_GROUP_ID_secp256k1, 128, TLS1_VERSION, TLS1_2_VERSION, DTLS1_VERSION, DTLS1_2_VERSION, 0 },
/* 22 */ { OSSL_TLS_GROUP_ID_secp256r1, 128, TLS1_VERSION, 0, DTLS1_VERSION, 0, 0 },
/* 23 */ { OSSL_TLS_GROUP_ID_secp384r1, 192, TLS1_VERSION, 0, DTLS1_VERSION, 0, 0 },
/* 24 */ { OSSL_TLS_GROUP_ID_secp521r1, 256, TLS1_VERSION, 0, DTLS1_VERSION, 0, 0 },
/* 25 */ { OSSL_TLS_GROUP_ID_brainpoolP256r1, 128, TLS1_VERSION, TLS1_2_VERSION, DTLS1_VERSION, DTLS1_2_VERSION, 0 },
/* 26 */ { OSSL_TLS_GROUP_ID_brainpoolP384r1, 192, TLS1_VERSION, TLS1_2_VERSION, DTLS1_VERSION, DTLS1_2_VERSION, 0 },
/* 27 */ { OSSL_TLS_GROUP_ID_brainpoolP512r1, 256, TLS1_VERSION, TLS1_2_VERSION, DTLS1_VERSION, DTLS1_2_VERSION, 0 },
/* 28 */ { OSSL_TLS_GROUP_ID_x25519, 128, TLS1_VERSION, 0, DTLS1_VERSION, 0, 0 },
/* 29 */ { OSSL_TLS_GROUP_ID_x448, 224, TLS1_VERSION, 0, DTLS1_VERSION, 0, 0 },
/* 30 */ { OSSL_TLS_GROUP_ID_brainpoolP256r1_tls13, 128, TLS1_3_VERSION, 0, -1, -1, 0 },
/* 31 */ { OSSL_TLS_GROUP_ID_brainpoolP384r1_tls13, 192, TLS1_3_VERSION, 0, -1, -1, 0 },
/* 32 */ { OSSL_TLS_GROUP_ID_brainpoolP512r1_tls13, 256, TLS1_3_VERSION, 0, -1, -1, 0 },
/* 33 */ { OSSL_TLS_GROUP_ID_ffdhe2048, 112, TLS1_3_VERSION, 0, -1, -1, 0 },
/* 34 */ { OSSL_TLS_GROUP_ID_ffdhe3072, 128, TLS1_3_VERSION, 0, -1, -1, 0 },
/* 35 */ { OSSL_TLS_GROUP_ID_ffdhe4096, 128, TLS1_3_VERSION, 0, -1, -1, 0 },
/* 36 */ { OSSL_TLS_GROUP_ID_ffdhe6144, 128, TLS1_3_VERSION, 0, -1, -1, 0 },
/* 37 */ { OSSL_TLS_GROUP_ID_ffdhe8192, 192, TLS1_3_VERSION, 0, -1, -1, 0 },
/* 38 */ { OSSL_TLS_GROUP_ID_mlkem512, ML_KEM_512_SECBITS, TLS1_3_VERSION, 0, -1, -1, 1 },
/* 39 */ { OSSL_TLS_GROUP_ID_mlkem768, ML_KEM_768_SECBITS, TLS1_3_VERSION, 0, -1, -1, 1 },
/* 40 */ { OSSL_TLS_GROUP_ID_mlkem1024, ML_KEM_1024_SECBITS, TLS1_3_VERSION, 0, -1, -1, 1 },
/* 41 */ { OSSL_TLS_GROUP_ID_X25519MLKEM768, ML_KEM_768_SECBITS, TLS1_3_VERSION, 0, -1, -1, 1 },
/* 42 */ { OSSL_TLS_GROUP_ID_SecP256r1MLKEM768, ML_KEM_768_SECBITS, TLS1_3_VERSION, 0, -1, -1, 1 },
/* 43 */ { OSSL_TLS_GROUP_ID_SecP384r1MLKEM1024, ML_KEM_1024_SECBITS, TLS1_3_VERSION, 0, -1, -1, 1 },
};
#define TLS_GROUP_ENTRY(tlsname, realname, algorithm, idx) \
{ \
OSSL_PARAM_utf8_string(OSSL_CAPABILITY_TLS_GROUP_NAME, \
tlsname, \
sizeof(tlsname)), \
OSSL_PARAM_utf8_string(OSSL_CAPABILITY_TLS_GROUP_NAME_INTERNAL, \
realname, \
sizeof(realname)), \
OSSL_PARAM_utf8_string(OSSL_CAPABILITY_TLS_GROUP_ALG, \
algorithm, \
sizeof(algorithm)), \
OSSL_PARAM_uint(OSSL_CAPABILITY_TLS_GROUP_ID, \
(unsigned int *)&group_list[idx].group_id), \
OSSL_PARAM_uint(OSSL_CAPABILITY_TLS_GROUP_SECURITY_BITS, \
(unsigned int *)&group_list[idx].secbits), \
OSSL_PARAM_int(OSSL_CAPABILITY_TLS_GROUP_MIN_TLS, \
(unsigned int *)&group_list[idx].mintls), \
OSSL_PARAM_int(OSSL_CAPABILITY_TLS_GROUP_MAX_TLS, \
(unsigned int *)&group_list[idx].maxtls), \
OSSL_PARAM_int(OSSL_CAPABILITY_TLS_GROUP_MIN_DTLS, \
(unsigned int *)&group_list[idx].mindtls), \
OSSL_PARAM_int(OSSL_CAPABILITY_TLS_GROUP_MAX_DTLS, \
(unsigned int *)&group_list[idx].maxdtls), \
OSSL_PARAM_int(OSSL_CAPABILITY_TLS_GROUP_IS_KEM, \
(unsigned int *)&group_list[idx].is_kem), \
OSSL_PARAM_END \
}
/*-
* - The 4th field of each entry is an index into "group_list" above.
*
* - The 3rd field is the key management algorithm name.
* - The 2nd field is the GROUP_NAME used with the provider, needed for
* providers that implement a family of related algorithms, but required
* non-null even when the provider implements just one.
*
* - The 1st field is the TLS group name used in SSL_CTX_set_group_list(),
* aliases repeat everything but the first field.
*
* Curves 1..22 were deprecated in:
*
* https://www.rfc-editor.org/rfc/rfc8422.html
*
* leaving just:
*
* enum {
* deprecated(1..22),
* secp256r1 (23), secp384r1 (24), secp521r1 (25),
* x25519(29), x448(30),
* reserved (0xFE00..0xFEFF),
* deprecated(0xFF01..0xFF02),
* (0xFFFF)
* } NamedCurve;
*
* and those added later (FFDHE, brainpool, ML-KEM)
*/
static const OSSL_PARAM param_group_list[][11] = {
# ifndef OPENSSL_NO_EC
# if !defined(OPENSSL_NO_ML_KEM)
# if !defined(OPENSSL_NO_ECX)
TLS_GROUP_ENTRY("X25519MLKEM768", "", "X25519MLKEM768", 41),
# endif
# endif
# ifndef FIPS_MODULE
TLS_GROUP_ENTRY("x25519", "X25519", "X25519", 28),
TLS_GROUP_ENTRY("x448", "X448", "X448", 29),
# endif
TLS_GROUP_ENTRY("secp256r1", "prime256v1", "EC", 22),
TLS_GROUP_ENTRY("P-256", "prime256v1", "EC", 22), /* Alias of above */
TLS_GROUP_ENTRY("secp384r1", "secp384r1", "EC", 23),
TLS_GROUP_ENTRY("P-384", "secp384r1", "EC", 23), /* Alias of above */
TLS_GROUP_ENTRY("secp521r1", "secp521r1", "EC", 24),
TLS_GROUP_ENTRY("P-521", "secp521r1", "EC", 24), /* Alias of above */
# endif /* OPENSSL_NO_EC */
# ifndef OPENSSL_NO_DH
/* Security bit values for FFDHE groups are as per RFC 7919 */
TLS_GROUP_ENTRY("ffdhe2048", "ffdhe2048", "DH", 33),
TLS_GROUP_ENTRY("ffdhe3072", "ffdhe3072", "DH", 34),
# endif
# if !defined(OPENSSL_NO_ML_KEM)
/* https://www.iana.org/assignments/tls-parameters/tls-parameters.xhtml#tls-parameters-8 */
TLS_GROUP_ENTRY("MLKEM512", "", "ML-KEM-512", 38),
TLS_GROUP_ENTRY("MLKEM768", "", "ML-KEM-768", 39),
TLS_GROUP_ENTRY("MLKEM1024", "", "ML-KEM-1024", 40),
# endif
# ifndef OPENSSL_NO_EC
# ifndef FIPS_MODULE
TLS_GROUP_ENTRY("brainpoolP256r1", "brainpoolP256r1", "EC", 25),
TLS_GROUP_ENTRY("brainpoolP384r1", "brainpoolP384r1", "EC", 26),
TLS_GROUP_ENTRY("brainpoolP512r1", "brainpoolP512r1", "EC", 27),
TLS_GROUP_ENTRY("brainpoolP256r1tls13", "brainpoolP256r1", "EC", 30),
TLS_GROUP_ENTRY("brainpoolP384r1tls13", "brainpoolP384r1", "EC", 31),
TLS_GROUP_ENTRY("brainpoolP512r1tls13", "brainpoolP512r1", "EC", 32),
# endif
# ifndef OPENSSL_NO_ML_KEM
TLS_GROUP_ENTRY("SecP256r1MLKEM768", "", "SecP256r1MLKEM768", 42),
TLS_GROUP_ENTRY("SecP384r1MLKEM1024", "", "SecP384r1MLKEM1024", 43),
# endif
# endif
# ifndef OPENSSL_NO_DH
TLS_GROUP_ENTRY("ffdhe4096", "ffdhe4096", "DH", 35),
TLS_GROUP_ENTRY("ffdhe6144", "ffdhe6144", "DH", 36),
TLS_GROUP_ENTRY("ffdhe8192", "ffdhe8192", "DH", 37),
# endif
# ifndef OPENSSL_NO_TLS_DEPRECATED_EC
# ifndef OPENSSL_NO_EC2M
TLS_GROUP_ENTRY("sect163k1", "sect163k1", "EC", 0),
TLS_GROUP_ENTRY("K-163", "sect163k1", "EC", 0), /* Alias of above */
# endif
# ifndef FIPS_MODULE
TLS_GROUP_ENTRY("sect163r1", "sect163r1", "EC", 1),
# endif
# ifndef OPENSSL_NO_EC2M
TLS_GROUP_ENTRY("sect163r2", "sect163r2", "EC", 2),
TLS_GROUP_ENTRY("B-163", "sect163r2", "EC", 2), /* Alias of above */
# endif
# ifndef FIPS_MODULE
TLS_GROUP_ENTRY("sect193r1", "sect193r1", "EC", 3),
TLS_GROUP_ENTRY("sect193r2", "sect193r2", "EC", 4),
# endif
# ifndef OPENSSL_NO_EC2M
TLS_GROUP_ENTRY("sect233k1", "sect233k1", "EC", 5),
TLS_GROUP_ENTRY("K-233", "sect233k1", "EC", 5), /* Alias of above */
TLS_GROUP_ENTRY("sect233r1", "sect233r1", "EC", 6),
TLS_GROUP_ENTRY("B-233", "sect233r1", "EC", 6), /* Alias of above */
# endif
# ifndef FIPS_MODULE
TLS_GROUP_ENTRY("sect239k1", "sect239k1", "EC", 7),
# endif
# ifndef OPENSSL_NO_EC2M
TLS_GROUP_ENTRY("sect283k1", "sect283k1", "EC", 8),
TLS_GROUP_ENTRY("K-283", "sect283k1", "EC", 8), /* Alias of above */
TLS_GROUP_ENTRY("sect283r1", "sect283r1", "EC", 9),
TLS_GROUP_ENTRY("B-283", "sect283r1", "EC", 9), /* Alias of above */
TLS_GROUP_ENTRY("sect409k1", "sect409k1", "EC", 10),
TLS_GROUP_ENTRY("K-409", "sect409k1", "EC", 10), /* Alias of above */
TLS_GROUP_ENTRY("sect409r1", "sect409r1", "EC", 11),
TLS_GROUP_ENTRY("B-409", "sect409r1", "EC", 11), /* Alias of above */
TLS_GROUP_ENTRY("sect571k1", "sect571k1", "EC", 12),
TLS_GROUP_ENTRY("K-571", "sect571k1", "EC", 12), /* Alias of above */
TLS_GROUP_ENTRY("sect571r1", "sect571r1", "EC", 13),
TLS_GROUP_ENTRY("B-571", "sect571r1", "EC", 13), /* Alias of above */
# endif
# ifndef FIPS_MODULE
TLS_GROUP_ENTRY("secp160k1", "secp160k1", "EC", 14),
TLS_GROUP_ENTRY("secp160r1", "secp160r1", "EC", 15),
TLS_GROUP_ENTRY("secp160r2", "secp160r2", "EC", 16),
TLS_GROUP_ENTRY("secp192k1", "secp192k1", "EC", 17),
# endif
TLS_GROUP_ENTRY("secp192r1", "prime192v1", "EC", 18),
TLS_GROUP_ENTRY("P-192", "prime192v1", "EC", 18), /* Alias of above */
# ifndef FIPS_MODULE
TLS_GROUP_ENTRY("secp224k1", "secp224k1", "EC", 19),
# endif
TLS_GROUP_ENTRY("secp224r1", "secp224r1", "EC", 20),
TLS_GROUP_ENTRY("P-224", "secp224r1", "EC", 20), /* Alias of above */
# ifndef FIPS_MODULE
TLS_GROUP_ENTRY("secp256k1", "secp256k1", "EC", 21),
# endif
# endif /* !defined(OPENSSL_NO_TLS_DEPRECATED_EC) */
};
#endif /* !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH) || !defined(OPENSSL_NO_ML_KEM) */
static int tls_group_capability(OSSL_CALLBACK *cb, void *arg)
{
#if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH) || !defined(OPENSSL_NO_ML_KEM)
size_t i;
for (i = 0; i < OSSL_NELEM(param_group_list); i++)
if (!cb(param_group_list[i], arg))
return 0;
#endif
return 1;
}
/* --------------------------------------------------------------- */
#if !defined(OPENSSL_NO_ML_DSA)
typedef struct tls_sigalg_constants_st {
unsigned int code_point;
unsigned int sec_bits; /* Bits of security */
int min_tls; /* Minimum TLS version, -1 unsupported */
int max_tls; /* Maximum TLS version (or 0 for undefined) */
int min_dtls; /* Minimum DTLS version, -1 unsupported */
int max_dtls; /* Maximum DTLS version (or 0 for undefined) */
} TLS_SIGALG_CONSTANTS;
static const TLS_SIGALG_CONSTANTS sigalg_constants_list[3] = {
{ 0x0904, 128, TLS1_3_VERSION, 0, -1, -1 },
{ 0x0905, 192, TLS1_3_VERSION, 0, -1, -1 },
{ 0x0906, 256, TLS1_3_VERSION, 0, -1, -1 },
};
# define TLS_SIGALG_ENTRY(tlsname, algorithm, oid, idx) \
{ \
OSSL_PARAM_utf8_string(OSSL_CAPABILITY_TLS_SIGALG_IANA_NAME, \
tlsname, sizeof(tlsname)), \
OSSL_PARAM_utf8_string(OSSL_CAPABILITY_TLS_SIGALG_NAME, \
algorithm, sizeof(algorithm)), \
OSSL_PARAM_utf8_string(OSSL_CAPABILITY_TLS_SIGALG_OID, \
oid, sizeof(oid)), \
OSSL_PARAM_uint(OSSL_CAPABILITY_TLS_SIGALG_CODE_POINT, \
(unsigned int *)&sigalg_constants_list[idx].code_point),\
OSSL_PARAM_uint(OSSL_CAPABILITY_TLS_SIGALG_SECURITY_BITS, \
(unsigned int *)&sigalg_constants_list[idx].sec_bits), \
OSSL_PARAM_int(OSSL_CAPABILITY_TLS_SIGALG_MIN_TLS, \
(unsigned int *)&sigalg_constants_list[idx].min_tls), \
OSSL_PARAM_int(OSSL_CAPABILITY_TLS_SIGALG_MAX_TLS, \
(unsigned int *)&sigalg_constants_list[idx].max_tls), \
OSSL_PARAM_int(OSSL_CAPABILITY_TLS_SIGALG_MIN_DTLS, \
(unsigned int *)&sigalg_constants_list[idx].min_dtls), \
OSSL_PARAM_int(OSSL_CAPABILITY_TLS_SIGALG_MAX_DTLS, \
(unsigned int *)&sigalg_constants_list[idx].max_dtls), \
OSSL_PARAM_END \
}
static const OSSL_PARAM param_sigalg_list[][10] = {
TLS_SIGALG_ENTRY("mldsa44", "ML-DSA-44", "2.16.840.1.101.3.4.3.17", 0),
TLS_SIGALG_ENTRY("mldsa65", "ML-DSA-65", "2.16.840.1.101.3.4.3.18", 1),
TLS_SIGALG_ENTRY("mldsa87", "ML-DSA-87", "2.16.840.1.101.3.4.3.19", 2),
};
#endif /* OPENSSL_NO_ML_DSA */
static int tls_sigalg_capability(OSSL_CALLBACK *cb, void *arg)
{
#if !defined(OPENSSL_NO_ML_DSA)
size_t i;
for (i = 0; i < OSSL_NELEM(param_sigalg_list); i++)
if (!cb(param_sigalg_list[i], arg))
return 0;
#endif
return 1;
}
int ossl_prov_get_capabilities(void *provctx, const char *capability,
OSSL_CALLBACK *cb, void *arg)
{
if (OPENSSL_strcasecmp(capability, "TLS-GROUP") == 0)
return tls_group_capability(cb, arg);
if (OPENSSL_strcasecmp(capability, "TLS-SIGALG") == 0)
return tls_sigalg_capability(cb, arg);
/* We don't support this capability */
return 0;
}
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