2 * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
14 # include <openssl/macros.h>
15 # ifndef OPENSSL_NO_DEPRECATED_3_0
19 # include <openssl/opensslconf.h>
20 # include <openssl/types.h>
28 /* DH parameter generation types used by EVP_PKEY_CTX_set_dh_paramgen_type() */
29 # define DH_PARAMGEN_TYPE_GENERATOR 0 /* Use a safe prime generator */
30 # define DH_PARAMGEN_TYPE_FIPS_186_2 1 /* Use FIPS186-2 standard */
31 # define DH_PARAMGEN_TYPE_FIPS_186_4 2 /* Use FIPS186-4 standard */
32 # define DH_PARAMGEN_TYPE_GROUP 3 /* Use a named safe prime group */
34 int EVP_PKEY_CTX_set_dh_paramgen_type(EVP_PKEY_CTX *ctx, int typ);
35 int EVP_PKEY_CTX_set_dh_paramgen_gindex(EVP_PKEY_CTX *ctx, int gindex);
36 int EVP_PKEY_CTX_set_dh_paramgen_seed(EVP_PKEY_CTX *ctx,
37 const unsigned char *seed,
39 int EVP_PKEY_CTX_set_dh_paramgen_prime_len(EVP_PKEY_CTX *ctx, int pbits);
40 int EVP_PKEY_CTX_set_dh_paramgen_subprime_len(EVP_PKEY_CTX *ctx, int qlen);
41 int EVP_PKEY_CTX_set_dh_paramgen_generator(EVP_PKEY_CTX *ctx, int gen);
42 int EVP_PKEY_CTX_set_dh_nid(EVP_PKEY_CTX *ctx, int nid);
43 int EVP_PKEY_CTX_set_dh_rfc5114(EVP_PKEY_CTX *ctx, int gen);
44 int EVP_PKEY_CTX_set_dhx_rfc5114(EVP_PKEY_CTX *ctx, int gen);
45 int EVP_PKEY_CTX_set_dh_pad(EVP_PKEY_CTX *ctx, int pad);
47 int EVP_PKEY_CTX_set_dh_kdf_type(EVP_PKEY_CTX *ctx, int kdf);
48 int EVP_PKEY_CTX_get_dh_kdf_type(EVP_PKEY_CTX *ctx);
49 int EVP_PKEY_CTX_set0_dh_kdf_oid(EVP_PKEY_CTX *ctx, ASN1_OBJECT *oid);
50 int EVP_PKEY_CTX_get0_dh_kdf_oid(EVP_PKEY_CTX *ctx, ASN1_OBJECT **oid);
51 int EVP_PKEY_CTX_set_dh_kdf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md);
52 int EVP_PKEY_CTX_get_dh_kdf_md(EVP_PKEY_CTX *ctx, const EVP_MD **md);
53 int EVP_PKEY_CTX_set_dh_kdf_outlen(EVP_PKEY_CTX *ctx, int len);
54 int EVP_PKEY_CTX_get_dh_kdf_outlen(EVP_PKEY_CTX *ctx, int *len);
55 int EVP_PKEY_CTX_set0_dh_kdf_ukm(EVP_PKEY_CTX *ctx, unsigned char *ukm, int len);
56 # ifndef OPENSSL_NO_DEPRECATED_3_0
58 int EVP_PKEY_CTX_get0_dh_kdf_ukm(EVP_PKEY_CTX *ctx, unsigned char **ukm);
61 # define EVP_PKEY_CTRL_DH_PARAMGEN_PRIME_LEN (EVP_PKEY_ALG_CTRL + 1)
62 # define EVP_PKEY_CTRL_DH_PARAMGEN_GENERATOR (EVP_PKEY_ALG_CTRL + 2)
63 # define EVP_PKEY_CTRL_DH_RFC5114 (EVP_PKEY_ALG_CTRL + 3)
64 # define EVP_PKEY_CTRL_DH_PARAMGEN_SUBPRIME_LEN (EVP_PKEY_ALG_CTRL + 4)
65 # define EVP_PKEY_CTRL_DH_PARAMGEN_TYPE (EVP_PKEY_ALG_CTRL + 5)
66 # define EVP_PKEY_CTRL_DH_KDF_TYPE (EVP_PKEY_ALG_CTRL + 6)
67 # define EVP_PKEY_CTRL_DH_KDF_MD (EVP_PKEY_ALG_CTRL + 7)
68 # define EVP_PKEY_CTRL_GET_DH_KDF_MD (EVP_PKEY_ALG_CTRL + 8)
69 # define EVP_PKEY_CTRL_DH_KDF_OUTLEN (EVP_PKEY_ALG_CTRL + 9)
70 # define EVP_PKEY_CTRL_GET_DH_KDF_OUTLEN (EVP_PKEY_ALG_CTRL + 10)
71 # define EVP_PKEY_CTRL_DH_KDF_UKM (EVP_PKEY_ALG_CTRL + 11)
72 # define EVP_PKEY_CTRL_GET_DH_KDF_UKM (EVP_PKEY_ALG_CTRL + 12)
73 # define EVP_PKEY_CTRL_DH_KDF_OID (EVP_PKEY_ALG_CTRL + 13)
74 # define EVP_PKEY_CTRL_GET_DH_KDF_OID (EVP_PKEY_ALG_CTRL + 14)
75 # define EVP_PKEY_CTRL_DH_NID (EVP_PKEY_ALG_CTRL + 15)
76 # define EVP_PKEY_CTRL_DH_PAD (EVP_PKEY_ALG_CTRL + 16)
79 # define EVP_PKEY_DH_KDF_NONE 1
80 # define EVP_PKEY_DH_KDF_X9_42 2
82 # ifndef OPENSSL_NO_STDIO
85 # ifndef OPENSSL_NO_DH
86 # include <openssl/e_os2.h>
87 # include <openssl/bio.h>
88 # include <openssl/asn1.h>
89 # ifndef OPENSSL_NO_DEPRECATED_1_1_0
90 # include <openssl/bn.h>
92 # include <openssl/dherr.h>
94 # ifndef OPENSSL_DH_MAX_MODULUS_BITS
95 # define OPENSSL_DH_MAX_MODULUS_BITS 10000
98 # define OPENSSL_DH_FIPS_MIN_MODULUS_BITS 1024
100 # define DH_FLAG_CACHE_MONT_P 0x01
102 # define DH_FLAG_TYPE_MASK 0xF000
103 # define DH_FLAG_TYPE_DH 0x0000
104 # define DH_FLAG_TYPE_DHX 0x1000
106 # ifndef OPENSSL_NO_DEPRECATED_1_1_0
108 * Does nothing. Previously this switched off constant time behaviour.
110 # define DH_FLAG_NO_EXP_CONSTTIME 0x00
113 # ifndef OPENSSL_NO_DEPRECATED_3_0
115 * If this flag is set the DH method is FIPS compliant and can be used in
116 * FIPS mode. This is set in the validated module method. If an application
117 * sets this flag in its own methods it is its responsibility to ensure the
118 * result is compliant.
121 # define DH_FLAG_FIPS_METHOD 0x0400
124 * If this flag is set the operations normally disabled in FIPS mode are
125 * permitted it is then the applications responsibility to ensure that the
126 * usage is compliant.
129 # define DH_FLAG_NON_FIPS_ALLOW 0x0400
132 /* Already defined in ossl_typ.h */
133 /* typedef struct dh_st DH; */
134 /* typedef struct dh_method DH_METHOD; */
136 DECLARE_ASN1_ITEM(DHparams)
138 # ifndef OPENSSL_NO_DEPRECATED_3_0
139 # define DH_GENERATOR_2 2
140 # define DH_GENERATOR_3 3
141 # define DH_GENERATOR_5 5
143 /* DH_check error codes */
145 * NB: These values must align with the equivalently named macros in
148 # define DH_CHECK_P_NOT_PRIME 0x01
149 # define DH_CHECK_P_NOT_SAFE_PRIME 0x02
150 # define DH_UNABLE_TO_CHECK_GENERATOR 0x04
151 # define DH_NOT_SUITABLE_GENERATOR 0x08
152 # define DH_CHECK_Q_NOT_PRIME 0x10
153 # define DH_CHECK_INVALID_Q_VALUE 0x20
154 # define DH_CHECK_INVALID_J_VALUE 0x40
155 # define DH_MODULUS_TOO_SMALL 0x80
156 # define DH_MODULUS_TOO_LARGE 0x100
158 /* DH_check_pub_key error codes */
159 # define DH_CHECK_PUBKEY_TOO_SMALL 0x01
160 # define DH_CHECK_PUBKEY_TOO_LARGE 0x02
161 # define DH_CHECK_PUBKEY_INVALID 0x04
164 * primes p where (p-1)/2 is prime too are called "safe"; we define this for
165 * backward compatibility:
167 # define DH_CHECK_P_NOT_STRONG_PRIME DH_CHECK_P_NOT_SAFE_PRIME
169 # define d2i_DHparams_fp(fp, x) \
170 (DH *)ASN1_d2i_fp((char *(*)())DH_new, \
171 (char *(*)())d2i_DHparams, \
173 (unsigned char **)(x))
174 # define i2d_DHparams_fp(fp, x) \
175 ASN1_i2d_fp(i2d_DHparams,(fp), (unsigned char *)(x))
176 # define d2i_DHparams_bio(bp, x) \
177 ASN1_d2i_bio_of(DH, DH_new, d2i_DHparams, bp, x)
178 # define i2d_DHparams_bio(bp, x) \
179 ASN1_i2d_bio_of(DH, i2d_DHparams, bp, x)
181 # define d2i_DHxparams_fp(fp,x) \
182 (DH *)ASN1_d2i_fp((char *(*)())DH_new, \
183 (char *(*)())d2i_DHxparams, \
185 (unsigned char **)(x))
186 # define i2d_DHxparams_fp(fp, x) \
187 ASN1_i2d_fp(i2d_DHxparams,(fp), (unsigned char *)(x))
188 # define d2i_DHxparams_bio(bp, x) \
189 ASN1_d2i_bio_of(DH, DH_new, d2i_DHxparams, bp, x)
190 # define i2d_DHxparams_bio(bp, x) \
191 ASN1_i2d_bio_of(DH, i2d_DHxparams, bp, x)
193 DECLARE_ASN1_DUP_FUNCTION_name_attr(OSSL_DEPRECATEDIN_3_0, DH, DHparams)
195 OSSL_DEPRECATEDIN_3_0 const DH_METHOD *DH_OpenSSL(void);
197 OSSL_DEPRECATEDIN_3_0 void DH_set_default_method(const DH_METHOD *meth);
198 OSSL_DEPRECATEDIN_3_0 const DH_METHOD *DH_get_default_method(void);
199 OSSL_DEPRECATEDIN_3_0 int DH_set_method(DH *dh, const DH_METHOD *meth);
200 OSSL_DEPRECATEDIN_3_0 DH *DH_new_method(ENGINE *engine);
202 OSSL_DEPRECATEDIN_3_0 DH *DH_new(void);
203 OSSL_DEPRECATEDIN_3_0 void DH_free(DH *dh);
204 OSSL_DEPRECATEDIN_3_0 int DH_up_ref(DH *dh);
205 OSSL_DEPRECATEDIN_3_0 int DH_bits(const DH *dh);
206 OSSL_DEPRECATEDIN_3_0 int DH_size(const DH *dh);
207 OSSL_DEPRECATEDIN_3_0 int DH_security_bits(const DH *dh);
209 # define DH_get_ex_new_index(l, p, newf, dupf, freef) \
210 CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_DH, l, p, newf, dupf, freef)
212 OSSL_DEPRECATEDIN_3_0 int DH_set_ex_data(DH *d, int idx, void *arg);
213 OSSL_DEPRECATEDIN_3_0 void *DH_get_ex_data(const DH *d, int idx);
215 OSSL_DEPRECATEDIN_3_0 int DH_generate_parameters_ex(DH *dh, int prime_len,
219 OSSL_DEPRECATEDIN_3_0 int DH_check_params_ex(const DH *dh);
220 OSSL_DEPRECATEDIN_3_0 int DH_check_ex(const DH *dh);
221 OSSL_DEPRECATEDIN_3_0 int DH_check_pub_key_ex(const DH *dh, const BIGNUM *pub_key);
222 OSSL_DEPRECATEDIN_3_0 int DH_check_params(const DH *dh, int *ret);
223 OSSL_DEPRECATEDIN_3_0 int DH_check(const DH *dh, int *codes);
224 OSSL_DEPRECATEDIN_3_0 int DH_check_pub_key(const DH *dh, const BIGNUM *pub_key,
226 OSSL_DEPRECATEDIN_3_0 int DH_generate_key(DH *dh);
227 OSSL_DEPRECATEDIN_3_0 int DH_compute_key(unsigned char *key,
228 const BIGNUM *pub_key, DH *dh);
229 OSSL_DEPRECATEDIN_3_0 int DH_compute_key_padded(unsigned char *key,
230 const BIGNUM *pub_key, DH *dh);
232 DECLARE_ASN1_ENCODE_FUNCTIONS_only_attr(OSSL_DEPRECATEDIN_3_0, DH, DHparams)
233 DECLARE_ASN1_ENCODE_FUNCTIONS_only_attr(OSSL_DEPRECATEDIN_3_0, DH, DHxparams)
235 # ifndef OPENSSL_NO_STDIO
236 OSSL_DEPRECATEDIN_3_0 int DHparams_print_fp(FILE *fp, const DH *x);
238 OSSL_DEPRECATEDIN_3_0 int DHparams_print(BIO *bp, const DH *x);
240 /* RFC 5114 parameters */
241 OSSL_DEPRECATEDIN_3_0 DH *DH_get_1024_160(void);
242 OSSL_DEPRECATEDIN_3_0 DH *DH_get_2048_224(void);
243 OSSL_DEPRECATEDIN_3_0 DH *DH_get_2048_256(void);
245 /* Named parameters, currently RFC7919 and RFC3526 */
246 OSSL_DEPRECATEDIN_3_0 DH *DH_new_by_nid(int nid);
247 OSSL_DEPRECATEDIN_3_0 int DH_get_nid(const DH *dh);
250 OSSL_DEPRECATEDIN_3_0 int DH_KDF_X9_42(unsigned char *out, size_t outlen,
251 const unsigned char *Z, size_t Zlen,
252 ASN1_OBJECT *key_oid,
253 const unsigned char *ukm,
254 size_t ukmlen, const EVP_MD *md);
256 OSSL_DEPRECATEDIN_3_0 void DH_get0_pqg(const DH *dh, const BIGNUM **p,
257 const BIGNUM **q, const BIGNUM **g);
258 OSSL_DEPRECATEDIN_3_0 int DH_set0_pqg(DH *dh, BIGNUM *p, BIGNUM *q, BIGNUM *g);
259 OSSL_DEPRECATEDIN_3_0 void DH_get0_key(const DH *dh, const BIGNUM **pub_key,
260 const BIGNUM **priv_key);
261 OSSL_DEPRECATEDIN_3_0 int DH_set0_key(DH *dh, BIGNUM *pub_key, BIGNUM *priv_key);
262 OSSL_DEPRECATEDIN_3_0 const BIGNUM *DH_get0_p(const DH *dh);
263 OSSL_DEPRECATEDIN_3_0 const BIGNUM *DH_get0_q(const DH *dh);
264 OSSL_DEPRECATEDIN_3_0 const BIGNUM *DH_get0_g(const DH *dh);
265 OSSL_DEPRECATEDIN_3_0 const BIGNUM *DH_get0_priv_key(const DH *dh);
266 OSSL_DEPRECATEDIN_3_0 const BIGNUM *DH_get0_pub_key(const DH *dh);
267 OSSL_DEPRECATEDIN_3_0 void DH_clear_flags(DH *dh, int flags);
268 OSSL_DEPRECATEDIN_3_0 int DH_test_flags(const DH *dh, int flags);
269 OSSL_DEPRECATEDIN_3_0 void DH_set_flags(DH *dh, int flags);
270 OSSL_DEPRECATEDIN_3_0 ENGINE *DH_get0_engine(DH *d);
271 OSSL_DEPRECATEDIN_3_0 long DH_get_length(const DH *dh);
272 OSSL_DEPRECATEDIN_3_0 int DH_set_length(DH *dh, long length);
274 OSSL_DEPRECATEDIN_3_0 DH_METHOD *DH_meth_new(const char *name, int flags);
275 OSSL_DEPRECATEDIN_3_0 void DH_meth_free(DH_METHOD *dhm);
276 OSSL_DEPRECATEDIN_3_0 DH_METHOD *DH_meth_dup(const DH_METHOD *dhm);
277 OSSL_DEPRECATEDIN_3_0 const char *DH_meth_get0_name(const DH_METHOD *dhm);
278 OSSL_DEPRECATEDIN_3_0 int DH_meth_set1_name(DH_METHOD *dhm, const char *name);
279 OSSL_DEPRECATEDIN_3_0 int DH_meth_get_flags(const DH_METHOD *dhm);
280 OSSL_DEPRECATEDIN_3_0 int DH_meth_set_flags(DH_METHOD *dhm, int flags);
281 OSSL_DEPRECATEDIN_3_0 void *DH_meth_get0_app_data(const DH_METHOD *dhm);
282 OSSL_DEPRECATEDIN_3_0 int DH_meth_set0_app_data(DH_METHOD *dhm, void *app_data);
283 OSSL_DEPRECATEDIN_3_0 int (*DH_meth_get_generate_key(const DH_METHOD *dhm)) (DH *);
284 OSSL_DEPRECATEDIN_3_0 int DH_meth_set_generate_key(DH_METHOD *dhm,
285 int (*generate_key) (DH *));
286 OSSL_DEPRECATEDIN_3_0 int (*DH_meth_get_compute_key(const DH_METHOD *dhm))
288 const BIGNUM *pub_key,
290 OSSL_DEPRECATEDIN_3_0 int DH_meth_set_compute_key(DH_METHOD *dhm,
293 const BIGNUM *pub_key,
295 OSSL_DEPRECATEDIN_3_0 int (*DH_meth_get_bn_mod_exp(const DH_METHOD *dhm))
296 (const DH *, BIGNUM *,
299 const BIGNUM *, BN_CTX *,
301 OSSL_DEPRECATEDIN_3_0 int DH_meth_set_bn_mod_exp(DH_METHOD *dhm,
303 (const DH *, BIGNUM *,
304 const BIGNUM *, const BIGNUM *,
305 const BIGNUM *, BN_CTX *,
307 OSSL_DEPRECATEDIN_3_0 int (*DH_meth_get_init(const DH_METHOD *dhm))(DH *);
308 OSSL_DEPRECATEDIN_3_0 int DH_meth_set_init(DH_METHOD *dhm, int (*init)(DH *));
309 OSSL_DEPRECATEDIN_3_0 int (*DH_meth_get_finish(const DH_METHOD *dhm)) (DH *);
310 OSSL_DEPRECATEDIN_3_0 int DH_meth_set_finish(DH_METHOD *dhm, int (*finish) (DH *));
311 OSSL_DEPRECATEDIN_3_0 int (*DH_meth_get_generate_params(const DH_METHOD *dhm))
314 OSSL_DEPRECATEDIN_3_0 int DH_meth_set_generate_params(DH_METHOD *dhm,
315 int (*generate_params)
318 # endif /* OPENSSL_NO_DEPRECATED_3_0 */
320 # ifndef OPENSSL_NO_DEPRECATED_0_9_8
321 OSSL_DEPRECATEDIN_0_9_8 DH *DH_generate_parameters(int prime_len, int generator,
322 void (*callback) (int, int,