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/* * Copyright 1995-2023 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 */ #ifndef OPENSSL_DH_H # define OPENSSL_DH_H # pragma once # include <openssl/macros.h> # ifndef OPENSSL_NO_DEPRECATED_3_0 # define HEADER_DH_H # endif # include <openssl/opensslconf.h> # include <openssl/types.h> # ifdef __cplusplus extern "C" { # endif #include <stdlib.h> /* * DH parameter generation types used by EVP_PKEY_CTX_set_dh_paramgen_type() * Note that additions/changes to this set of values requires corresponding * adjustments to range checks in dh_gen() */ # define DH_PARAMGEN_TYPE_GENERATOR 0 /* Use a safe prime generator */ # define DH_PARAMGEN_TYPE_FIPS_186_2 1 /* Use FIPS186-2 standard */ # define DH_PARAMGEN_TYPE_FIPS_186_4 2 /* Use FIPS186-4 standard */ # define DH_PARAMGEN_TYPE_GROUP 3 /* Use a named safe prime group */ int EVP_PKEY_CTX_set_dh_paramgen_type(EVP_PKEY_CTX *ctx, int typ); int EVP_PKEY_CTX_set_dh_paramgen_gindex(EVP_PKEY_CTX *ctx, int gindex); int EVP_PKEY_CTX_set_dh_paramgen_seed(EVP_PKEY_CTX *ctx, const unsigned char *seed, size_t seedlen); int EVP_PKEY_CTX_set_dh_paramgen_prime_len(EVP_PKEY_CTX *ctx, int pbits); int EVP_PKEY_CTX_set_dh_paramgen_subprime_len(EVP_PKEY_CTX *ctx, int qlen); int EVP_PKEY_CTX_set_dh_paramgen_generator(EVP_PKEY_CTX *ctx, int gen); int EVP_PKEY_CTX_set_dh_nid(EVP_PKEY_CTX *ctx, int nid); int EVP_PKEY_CTX_set_dh_rfc5114(EVP_PKEY_CTX *ctx, int gen); int EVP_PKEY_CTX_set_dhx_rfc5114(EVP_PKEY_CTX *ctx, int gen); int EVP_PKEY_CTX_set_dh_pad(EVP_PKEY_CTX *ctx, int pad); int EVP_PKEY_CTX_set_dh_kdf_type(EVP_PKEY_CTX *ctx, int kdf); int EVP_PKEY_CTX_get_dh_kdf_type(EVP_PKEY_CTX *ctx); int EVP_PKEY_CTX_set0_dh_kdf_oid(EVP_PKEY_CTX *ctx, ASN1_OBJECT *oid); int EVP_PKEY_CTX_get0_dh_kdf_oid(EVP_PKEY_CTX *ctx, ASN1_OBJECT **oid); int EVP_PKEY_CTX_set_dh_kdf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md); int EVP_PKEY_CTX_get_dh_kdf_md(EVP_PKEY_CTX *ctx, const EVP_MD **md); int EVP_PKEY_CTX_set_dh_kdf_outlen(EVP_PKEY_CTX *ctx, int len); int EVP_PKEY_CTX_get_dh_kdf_outlen(EVP_PKEY_CTX *ctx, int *len); int EVP_PKEY_CTX_set0_dh_kdf_ukm(EVP_PKEY_CTX *ctx, unsigned char *ukm, int len); # ifndef OPENSSL_NO_DEPRECATED_3_0 OSSL_DEPRECATEDIN_3_0 int EVP_PKEY_CTX_get0_dh_kdf_ukm(EVP_PKEY_CTX *ctx, unsigned char **ukm); #endif # define EVP_PKEY_CTRL_DH_PARAMGEN_PRIME_LEN (EVP_PKEY_ALG_CTRL + 1) # define EVP_PKEY_CTRL_DH_PARAMGEN_GENERATOR (EVP_PKEY_ALG_CTRL + 2) # define EVP_PKEY_CTRL_DH_RFC5114 (EVP_PKEY_ALG_CTRL + 3) # define EVP_PKEY_CTRL_DH_PARAMGEN_SUBPRIME_LEN (EVP_PKEY_ALG_CTRL + 4) # define EVP_PKEY_CTRL_DH_PARAMGEN_TYPE (EVP_PKEY_ALG_CTRL + 5) # define EVP_PKEY_CTRL_DH_KDF_TYPE (EVP_PKEY_ALG_CTRL + 6) # define EVP_PKEY_CTRL_DH_KDF_MD (EVP_PKEY_ALG_CTRL + 7) # define EVP_PKEY_CTRL_GET_DH_KDF_MD (EVP_PKEY_ALG_CTRL + 8) # define EVP_PKEY_CTRL_DH_KDF_OUTLEN (EVP_PKEY_ALG_CTRL + 9) # define EVP_PKEY_CTRL_GET_DH_KDF_OUTLEN (EVP_PKEY_ALG_CTRL + 10) # define EVP_PKEY_CTRL_DH_KDF_UKM (EVP_PKEY_ALG_CTRL + 11) # define EVP_PKEY_CTRL_GET_DH_KDF_UKM (EVP_PKEY_ALG_CTRL + 12) # define EVP_PKEY_CTRL_DH_KDF_OID (EVP_PKEY_ALG_CTRL + 13) # define EVP_PKEY_CTRL_GET_DH_KDF_OID (EVP_PKEY_ALG_CTRL + 14) # define EVP_PKEY_CTRL_DH_NID (EVP_PKEY_ALG_CTRL + 15) # define EVP_PKEY_CTRL_DH_PAD (EVP_PKEY_ALG_CTRL + 16) /* KDF types */ # define EVP_PKEY_DH_KDF_NONE 1 # define EVP_PKEY_DH_KDF_X9_42 2 # ifndef OPENSSL_NO_STDIO # include <stdio.h> # endif # ifndef OPENSSL_NO_DH # include <openssl/e_os2.h> # include <openssl/bio.h> # include <openssl/asn1.h> # ifndef OPENSSL_NO_DEPRECATED_1_1_0 # include <openssl/bn.h> # endif # include <openssl/dherr.h> # ifndef OPENSSL_DH_MAX_MODULUS_BITS # define OPENSSL_DH_MAX_MODULUS_BITS 10000 # endif # ifndef OPENSSL_DH_CHECK_MAX_MODULUS_BITS # define OPENSSL_DH_CHECK_MAX_MODULUS_BITS 32768 # endif # define OPENSSL_DH_FIPS_MIN_MODULUS_BITS 1024 # define DH_FLAG_CACHE_MONT_P 0x01 # define DH_FLAG_TYPE_MASK 0xF000 # define DH_FLAG_TYPE_DH 0x0000 # define DH_FLAG_TYPE_DHX 0x1000 # ifndef OPENSSL_NO_DEPRECATED_1_1_0 /* * Does nothing. Previously this switched off constant time behaviour. */ # define DH_FLAG_NO_EXP_CONSTTIME 0x00 # endif # ifndef OPENSSL_NO_DEPRECATED_3_0 /* * If this flag is set the DH method is FIPS compliant and can be used in * FIPS mode. This is set in the validated module method. If an application * sets this flag in its own methods it is its responsibility to ensure the * result is compliant. */ # define DH_FLAG_FIPS_METHOD 0x0400 /* * If this flag is set the operations normally disabled in FIPS mode are * permitted it is then the applications responsibility to ensure that the * usage is compliant. */ # define DH_FLAG_NON_FIPS_ALLOW 0x0400 # endif /* Already defined in ossl_typ.h */ /* typedef struct dh_st DH; */ /* typedef struct dh_method DH_METHOD; */ DECLARE_ASN1_ITEM(DHparams) # ifndef OPENSSL_NO_DEPRECATED_3_0 # define DH_GENERATOR_2 2 # define DH_GENERATOR_3 3 # define DH_GENERATOR_5 5 /* DH_check error codes, some of them shared with DH_check_pub_key */ /* * NB: These values must align with the equivalently named macros in * internal/ffc.h. */ # define DH_CHECK_P_NOT_PRIME 0x01 # define DH_CHECK_P_NOT_SAFE_PRIME 0x02 # define DH_UNABLE_TO_CHECK_GENERATOR 0x04 # define DH_NOT_SUITABLE_GENERATOR 0x08 # define DH_CHECK_Q_NOT_PRIME 0x10 # define DH_CHECK_INVALID_Q_VALUE 0x20 /* +DH_check_pub_key */ # define DH_CHECK_INVALID_J_VALUE 0x40 # define DH_MODULUS_TOO_SMALL 0x80 # define DH_MODULUS_TOO_LARGE 0x100 /* +DH_check_pub_key */ /* DH_check_pub_key error codes */ # define DH_CHECK_PUBKEY_TOO_SMALL 0x01 # define DH_CHECK_PUBKEY_TOO_LARGE 0x02 # define DH_CHECK_PUBKEY_INVALID 0x04 /* * primes p where (p-1)/2 is prime too are called "safe"; we define this for * backward compatibility: */ # define DH_CHECK_P_NOT_STRONG_PRIME DH_CHECK_P_NOT_SAFE_PRIME # define d2i_DHparams_fp(fp, x) \ (DH *)ASN1_d2i_fp((char *(*)())DH_new, \ (char *(*)())d2i_DHparams, \ (fp), \ (unsigned char **)(x)) # define i2d_DHparams_fp(fp, x) \ ASN1_i2d_fp(i2d_DHparams,(fp), (unsigned char *)(x)) # define d2i_DHparams_bio(bp, x) \ ASN1_d2i_bio_of(DH, DH_new, d2i_DHparams, bp, x) # define i2d_DHparams_bio(bp, x) \ ASN1_i2d_bio_of(DH, i2d_DHparams, bp, x) # define d2i_DHxparams_fp(fp,x) \ (DH *)ASN1_d2i_fp((char *(*)())DH_new, \ (char *(*)())d2i_DHxparams, \ (fp), \ (unsigned char **)(x)) # define i2d_DHxparams_fp(fp, x) \ ASN1_i2d_fp(i2d_DHxparams,(fp), (unsigned char *)(x)) # define d2i_DHxparams_bio(bp, x) \ ASN1_d2i_bio_of(DH, DH_new, d2i_DHxparams, bp, x) # define i2d_DHxparams_bio(bp, x) \ ASN1_i2d_bio_of(DH, i2d_DHxparams, bp, x) DECLARE_ASN1_DUP_FUNCTION_name_attr(OSSL_DEPRECATEDIN_3_0, DH, DHparams) OSSL_DEPRECATEDIN_3_0 const DH_METHOD *DH_OpenSSL(void); OSSL_DEPRECATEDIN_3_0 void DH_set_default_method(const DH_METHOD *meth); OSSL_DEPRECATEDIN_3_0 const DH_METHOD *DH_get_default_method(void); OSSL_DEPRECATEDIN_3_0 int DH_set_method(DH *dh, const DH_METHOD *meth); OSSL_DEPRECATEDIN_3_0 DH *DH_new_method(ENGINE *engine); OSSL_DEPRECATEDIN_3_0 DH *DH_new(void); OSSL_DEPRECATEDIN_3_0 void DH_free(DH *dh); OSSL_DEPRECATEDIN_3_0 int DH_up_ref(DH *dh); OSSL_DEPRECATEDIN_3_0 int DH_bits(const DH *dh); OSSL_DEPRECATEDIN_3_0 int DH_size(const DH *dh); OSSL_DEPRECATEDIN_3_0 int DH_security_bits(const DH *dh); # define DH_get_ex_new_index(l, p, newf, dupf, freef) \ CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_DH, l, p, newf, dupf, freef) OSSL_DEPRECATEDIN_3_0 int DH_set_ex_data(DH *d, int idx, void *arg); OSSL_DEPRECATEDIN_3_0 void *DH_get_ex_data(const DH *d, int idx); OSSL_DEPRECATEDIN_3_0 int DH_generate_parameters_ex(DH *dh, int prime_len, int generator, BN_GENCB *cb); OSSL_DEPRECATEDIN_3_0 int DH_check_params_ex(const DH *dh); OSSL_DEPRECATEDIN_3_0 int DH_check_ex(const DH *dh); OSSL_DEPRECATEDIN_3_0 int DH_check_pub_key_ex(const DH *dh, const BIGNUM *pub_key); OSSL_DEPRECATEDIN_3_0 int DH_check_params(const DH *dh, int *ret); OSSL_DEPRECATEDIN_3_0 int DH_check(const DH *dh, int *codes); OSSL_DEPRECATEDIN_3_0 int DH_check_pub_key(const DH *dh, const BIGNUM *pub_key, int *codes); OSSL_DEPRECATEDIN_3_0 int DH_generate_key(DH *dh); OSSL_DEPRECATEDIN_3_0 int DH_compute_key(unsigned char *key, const BIGNUM *pub_key, DH *dh); OSSL_DEPRECATEDIN_3_0 int DH_compute_key_padded(unsigned char *key, const BIGNUM *pub_key, DH *dh); DECLARE_ASN1_ENCODE_FUNCTIONS_only_attr(OSSL_DEPRECATEDIN_3_0, DH, DHparams) DECLARE_ASN1_ENCODE_FUNCTIONS_only_attr(OSSL_DEPRECATEDIN_3_0, DH, DHxparams) # ifndef OPENSSL_NO_STDIO OSSL_DEPRECATEDIN_3_0 int DHparams_print_fp(FILE *fp, const DH *x); # endif OSSL_DEPRECATEDIN_3_0 int DHparams_print(BIO *bp, const DH *x); /* RFC 5114 parameters */ OSSL_DEPRECATEDIN_3_0 DH *DH_get_1024_160(void); OSSL_DEPRECATEDIN_3_0 DH *DH_get_2048_224(void); OSSL_DEPRECATEDIN_3_0 DH *DH_get_2048_256(void); /* Named parameters, currently RFC7919 and RFC3526 */ OSSL_DEPRECATEDIN_3_0 DH *DH_new_by_nid(int nid); OSSL_DEPRECATEDIN_3_0 int DH_get_nid(const DH *dh); /* RFC2631 KDF */ OSSL_DEPRECATEDIN_3_0 int DH_KDF_X9_42(unsigned char *out, size_t outlen, const unsigned char *Z, size_t Zlen, ASN1_OBJECT *key_oid, const unsigned char *ukm, size_t ukmlen, const EVP_MD *md); OSSL_DEPRECATEDIN_3_0 void DH_get0_pqg(const DH *dh, const BIGNUM **p, const BIGNUM **q, const BIGNUM **g); OSSL_DEPRECATEDIN_3_0 int DH_set0_pqg(DH *dh, BIGNUM *p, BIGNUM *q, BIGNUM *g); OSSL_DEPRECATEDIN_3_0 void DH_get0_key(const DH *dh, const BIGNUM **pub_key, const BIGNUM **priv_key); OSSL_DEPRECATEDIN_3_0 int DH_set0_key(DH *dh, BIGNUM *pub_key, BIGNUM *priv_key); OSSL_DEPRECATEDIN_3_0 const BIGNUM *DH_get0_p(const DH *dh); OSSL_DEPRECATEDIN_3_0 const BIGNUM *DH_get0_q(const DH *dh); OSSL_DEPRECATEDIN_3_0 const BIGNUM *DH_get0_g(const DH *dh); OSSL_DEPRECATEDIN_3_0 const BIGNUM *DH_get0_priv_key(const DH *dh); OSSL_DEPRECATEDIN_3_0 const BIGNUM *DH_get0_pub_key(const DH *dh); OSSL_DEPRECATEDIN_3_0 void DH_clear_flags(DH *dh, int flags); OSSL_DEPRECATEDIN_3_0 int DH_test_flags(const DH *dh, int flags); OSSL_DEPRECATEDIN_3_0 void DH_set_flags(DH *dh, int flags); OSSL_DEPRECATEDIN_3_0 ENGINE *DH_get0_engine(DH *d); OSSL_DEPRECATEDIN_3_0 long DH_get_length(const DH *dh); OSSL_DEPRECATEDIN_3_0 int DH_set_length(DH *dh, long length); OSSL_DEPRECATEDIN_3_0 DH_METHOD *DH_meth_new(const char *name, int flags); OSSL_DEPRECATEDIN_3_0 void DH_meth_free(DH_METHOD *dhm); OSSL_DEPRECATEDIN_3_0 DH_METHOD *DH_meth_dup(const DH_METHOD *dhm); OSSL_DEPRECATEDIN_3_0 const char *DH_meth_get0_name(const DH_METHOD *dhm); OSSL_DEPRECATEDIN_3_0 int DH_meth_set1_name(DH_METHOD *dhm, const char *name); OSSL_DEPRECATEDIN_3_0 int DH_meth_get_flags(const DH_METHOD *dhm); OSSL_DEPRECATEDIN_3_0 int DH_meth_set_flags(DH_METHOD *dhm, int flags); OSSL_DEPRECATEDIN_3_0 void *DH_meth_get0_app_data(const DH_METHOD *dhm); OSSL_DEPRECATEDIN_3_0 int DH_meth_set0_app_data(DH_METHOD *dhm, void *app_data); OSSL_DEPRECATEDIN_3_0 int (*DH_meth_get_generate_key(const DH_METHOD *dhm)) (DH *); OSSL_DEPRECATEDIN_3_0 int DH_meth_set_generate_key(DH_METHOD *dhm, int (*generate_key) (DH *)); OSSL_DEPRECATEDIN_3_0 int (*DH_meth_get_compute_key(const DH_METHOD *dhm)) (unsigned char *key, const BIGNUM *pub_key, DH *dh); OSSL_DEPRECATEDIN_3_0 int DH_meth_set_compute_key(DH_METHOD *dhm, int (*compute_key) (unsigned char *key, const BIGNUM *pub_key, DH *dh)); OSSL_DEPRECATEDIN_3_0 int (*DH_meth_get_bn_mod_exp(const DH_METHOD *dhm)) (const DH *, BIGNUM *, const BIGNUM *, const BIGNUM *, const BIGNUM *, BN_CTX *, BN_MONT_CTX *); OSSL_DEPRECATEDIN_3_0 int DH_meth_set_bn_mod_exp(DH_METHOD *dhm, int (*bn_mod_exp) (const DH *, BIGNUM *, const BIGNUM *, const BIGNUM *, const BIGNUM *, BN_CTX *, BN_MONT_CTX *)); OSSL_DEPRECATEDIN_3_0 int (*DH_meth_get_init(const DH_METHOD *dhm))(DH *); OSSL_DEPRECATEDIN_3_0 int DH_meth_set_init(DH_METHOD *dhm, int (*init)(DH *)); OSSL_DEPRECATEDIN_3_0 int (*DH_meth_get_finish(const DH_METHOD *dhm)) (DH *); OSSL_DEPRECATEDIN_3_0 int DH_meth_set_finish(DH_METHOD *dhm, int (*finish) (DH *)); OSSL_DEPRECATEDIN_3_0 int (*DH_meth_get_generate_params(const DH_METHOD *dhm)) (DH *, int, int, BN_GENCB *); OSSL_DEPRECATEDIN_3_0 int DH_meth_set_generate_params(DH_METHOD *dhm, int (*generate_params) (DH *, int, int, BN_GENCB *)); # endif /* OPENSSL_NO_DEPRECATED_3_0 */ # ifndef OPENSSL_NO_DEPRECATED_0_9_8 OSSL_DEPRECATEDIN_0_9_8 DH *DH_generate_parameters(int prime_len, int generator, void (*callback) (int, int, void *), void *cb_arg); # endif # endif # ifdef __cplusplus } # endif #endif