[thirdparty/openssl.git] / include / openssl / dh.h

/*
 * Copyright 1995-2019 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>

# ifndef OPENSSL_NO_DH
#  include <openssl/e_os2.h>
#  include <openssl/bio.h>
#  include <openssl/asn1.h>
#  include <openssl/types.h>
#  ifndef OPENSSL_NO_DEPRECATED_1_1_0
#   include <openssl/bn.h>
#  endif
#  include <openssl/dherr.h>

#  ifdef  __cplusplus
extern "C" {
#  endif

#  ifndef OPENSSL_DH_MAX_MODULUS_BITS
#   define OPENSSL_DH_MAX_MODULUS_BITS    10000
#  endif

#  define OPENSSL_DH_FIPS_MIN_MODULUS_BITS 1024

#  define DH_FLAG_CACHE_MONT_P     0x01

#  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 */
/*
 * 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
#   define DH_CHECK_INVALID_J_VALUE        0x40
#   define DH_MODULUS_TOO_SMALL            0x80
#   define DH_MODULUS_TOO_LARGE            0x100

/* 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

/* DH parameter generation types used by EVP_PKEY_CTX_set_dh_paramgen_type() */
#   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 */

#   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)
#  endif

DECLARE_ASN1_DUP_FUNCTION_name(DH, DHparams)

DEPRECATEDIN_3_0(const DH_METHOD *DH_OpenSSL(void))

DEPRECATEDIN_3_0(void DH_set_default_method(const DH_METHOD *meth))
DEPRECATEDIN_3_0(const DH_METHOD *DH_get_default_method(void))
DEPRECATEDIN_3_0(int DH_set_method(DH *dh, const DH_METHOD *meth))
DEPRECATEDIN_3_0(DH *DH_new_method(ENGINE *engine))

DH *DH_new(void);
void DH_free(DH *dh);
int DH_up_ref(DH *dh);
DEPRECATEDIN_3_0(int DH_bits(const DH *dh))
DEPRECATEDIN_3_0(int DH_size(const DH *dh))
DEPRECATEDIN_3_0(int DH_security_bits(const DH *dh))
#  ifndef OPENSSL_NO_DEPRECATED_3_0
#   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)
#  endif
DEPRECATEDIN_3_0(int DH_set_ex_data(DH *d, int idx, void *arg))
DEPRECATEDIN_3_0(void *DH_get_ex_data(const DH *d, int idx))

/* Deprecated version */
DEPRECATEDIN_0_9_8(DH *DH_generate_parameters(int prime_len, int generator,
                                              void (*callback) (int, int,
                                                                void *),
                                              void *cb_arg))

/* New version */
DEPRECATEDIN_3_0(int DH_generate_parameters_ex(DH *dh, int prime_len,
                                               int generator, BN_GENCB *cb))

DEPRECATEDIN_3_0(int DH_check_params_ex(const DH *dh))
DEPRECATEDIN_3_0(int DH_check_ex(const DH *dh))
DEPRECATEDIN_3_0(int DH_check_pub_key_ex(const DH *dh, const BIGNUM *pub_key))
/*
 * TODO(3.0): deprecate DH_check_params once ssl/statem/statem_clnt.c is fixed.
 */
int DH_check_params(const DH *dh, int *ret);
DEPRECATEDIN_3_0(int DH_check(const DH *dh, int *codes))
DEPRECATEDIN_3_0(int DH_check_pub_key(const DH *dh, const BIGNUM *pub_key,
                                      int *codes))
DEPRECATEDIN_3_0(int DH_generate_key(DH *dh))
DEPRECATEDIN_3_0(int DH_compute_key(unsigned char *key, const BIGNUM *pub_key,
                                    DH *dh))
DEPRECATEDIN_3_0(int DH_compute_key_padded(unsigned char *key,
                                           const BIGNUM *pub_key, DH *dh))
DECLARE_ASN1_ENCODE_FUNCTIONS_only(DH, DHparams)
DECLARE_ASN1_ENCODE_FUNCTIONS_only(DH, DHxparams)
#  ifndef OPENSSL_NO_STDIO
DEPRECATEDIN_3_0(int DHparams_print_fp(FILE *fp, const DH *x))
#  endif
DEPRECATEDIN_3_0(int DHparams_print(BIO *bp, const DH *x))

/* RFC 5114 parameters */
DH *DH_get_1024_160(void);
DH *DH_get_2048_224(void);
DH *DH_get_2048_256(void);

/* Named parameters, currently RFC7919 and RFC3526 */
/* TODO(3.0): deprecate DH_new_by_nid() after converting ssl/s3_lib.c */
DH *DH_new_by_nid(int nid);
DEPRECATEDIN_3_0(int DH_get_nid(DH *dh))

#  ifndef OPENSSL_NO_CMS
/* RFC2631 KDF */
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))
#  endif

void DH_get0_pqg(const DH *dh,
                 const BIGNUM **p, const BIGNUM **q, const BIGNUM **g);
int DH_set0_pqg(DH *dh, BIGNUM *p, BIGNUM *q, BIGNUM *g);
void DH_get0_key(const DH *dh,
                 const BIGNUM **pub_key, const BIGNUM **priv_key);
int DH_set0_key(DH *dh, BIGNUM *pub_key, BIGNUM *priv_key);
const BIGNUM *DH_get0_p(const DH *dh);
const BIGNUM *DH_get0_q(const DH *dh);
const BIGNUM *DH_get0_g(const DH *dh);
const BIGNUM *DH_get0_priv_key(const DH *dh);
const BIGNUM *DH_get0_pub_key(const DH *dh);
void DH_clear_flags(DH *dh, int flags);
int DH_test_flags(const DH *dh, int flags);
void DH_set_flags(DH *dh, int flags);
DEPRECATEDIN_3_0(ENGINE *DH_get0_engine(DH *d))
DEPRECATEDIN_3_0(long DH_get_length(const DH *dh))
DEPRECATEDIN_3_0(int DH_set_length(DH *dh, long length))

DEPRECATEDIN_3_0(DH_METHOD *DH_meth_new(const char *name, int flags))
DEPRECATEDIN_3_0(void DH_meth_free(DH_METHOD *dhm))
DEPRECATEDIN_3_0(DH_METHOD *DH_meth_dup(const DH_METHOD *dhm))
DEPRECATEDIN_3_0(const char *DH_meth_get0_name(const DH_METHOD *dhm))
DEPRECATEDIN_3_0(int DH_meth_set1_name(DH_METHOD *dhm, const char *name))
DEPRECATEDIN_3_0(int DH_meth_get_flags(const DH_METHOD *dhm))
DEPRECATEDIN_3_0(int DH_meth_set_flags(DH_METHOD *dhm, int flags))
DEPRECATEDIN_3_0(void *DH_meth_get0_app_data(const DH_METHOD *dhm))
DEPRECATEDIN_3_0(int DH_meth_set0_app_data(DH_METHOD *dhm, void *app_data))
DEPRECATEDIN_3_0(int (*DH_meth_get_generate_key(const DH_METHOD *dhm)) (DH *))
DEPRECATEDIN_3_0(int DH_meth_set_generate_key(DH_METHOD *dhm,
                                              int (*generate_key) (DH *)))
DEPRECATEDIN_3_0(int (*DH_meth_get_compute_key(const DH_METHOD *dhm))
                                               (unsigned char *key,
                                               const BIGNUM *pub_key, DH *dh))
DEPRECATEDIN_3_0(int DH_meth_set_compute_key(DH_METHOD *dhm,
                                             int (*compute_key)
                                                (unsigned char *key,
                                                 const BIGNUM *pub_key,
                                                 DH *dh)))
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 *))
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 *)))
DEPRECATEDIN_3_0(int (*DH_meth_get_init(const DH_METHOD *dhm))(DH *))
DEPRECATEDIN_3_0(int DH_meth_set_init(DH_METHOD *dhm, int (*init)(DH *)))
DEPRECATEDIN_3_0(int (*DH_meth_get_finish(const DH_METHOD *dhm)) (DH *))
DEPRECATEDIN_3_0(int DH_meth_set_finish(DH_METHOD *dhm, int (*finish) (DH *)))
DEPRECATEDIN_3_0(int (*DH_meth_get_generate_params(const DH_METHOD *dhm))
                                                       (DH *, int, int,
                                                        BN_GENCB *))
DEPRECATEDIN_3_0(int DH_meth_set_generate_params(DH_METHOD *dhm,
                                                 int (*generate_params)
                                                     (DH *, int, int,
                                                      BN_GENCB *)))

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);

#  define EVP_PKEY_CTX_set_dh_kdf_type(ctx, kdf) \
        EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, EVP_PKEY_OP_DERIVE, \
                          EVP_PKEY_CTRL_DH_KDF_TYPE, kdf, NULL)

#  define EVP_PKEY_CTX_get_dh_kdf_type(ctx) \
        EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, EVP_PKEY_OP_DERIVE, \
                          EVP_PKEY_CTRL_DH_KDF_TYPE, -2, NULL)

#  define EVP_PKEY_CTX_set0_dh_kdf_oid(ctx, oid) \
        EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, EVP_PKEY_OP_DERIVE, \
                          EVP_PKEY_CTRL_DH_KDF_OID, 0, (void *)(oid))

#  define EVP_PKEY_CTX_get0_dh_kdf_oid(ctx, poid) \
        EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX,  EVP_PKEY_OP_DERIVE, \
                          EVP_PKEY_CTRL_GET_DH_KDF_OID, 0, (void *)(poid))

#  define EVP_PKEY_CTX_set_dh_kdf_md(ctx, md) \
        EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, EVP_PKEY_OP_DERIVE, \
                          EVP_PKEY_CTRL_DH_KDF_MD, 0, (void *)(md))

#  define EVP_PKEY_CTX_get_dh_kdf_md(ctx, pmd) \
        EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, EVP_PKEY_OP_DERIVE, \
                          EVP_PKEY_CTRL_GET_DH_KDF_MD, 0, (void *)(pmd))

#  define EVP_PKEY_CTX_set_dh_kdf_outlen(ctx, len) \
        EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, EVP_PKEY_OP_DERIVE, \
                          EVP_PKEY_CTRL_DH_KDF_OUTLEN, len, NULL)

#  define EVP_PKEY_CTX_get_dh_kdf_outlen(ctx, plen) \
        EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, EVP_PKEY_OP_DERIVE, \
                          EVP_PKEY_CTRL_GET_DH_KDF_OUTLEN, 0, (void *)(plen))

#  define EVP_PKEY_CTX_set0_dh_kdf_ukm(ctx, p, plen) \
        EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX,  EVP_PKEY_OP_DERIVE, \
                          EVP_PKEY_CTRL_DH_KDF_UKM, plen, (void *)(p))

#  define EVP_PKEY_CTX_get0_dh_kdf_ukm(ctx, p) \
        EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX,  EVP_PKEY_OP_DERIVE, \
                          EVP_PKEY_CTRL_GET_DH_KDF_UKM, 0, (void *)(p))

#  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
#  ifndef OPENSSL_NO_CMS
#   define EVP_PKEY_DH_KDF_X9_42                          2
#  endif

#  ifdef  __cplusplus
}
#  endif
# endif
#endif
Commit	Line	Data
21dcbebc	1	/*
feeb7ecd	2	* Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved.
d02b48c6	3	*
48f4ad77	4	* Licensed under the Apache License 2.0 (the "License"). You may not use
21dcbebc RS	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
d02b48c6 RE	8	*/
d02b48c6 RE	9
ae4186b0 DMSP	10	#ifndef OPENSSL_DH_H
ae4186b0 DMSP	11	# define OPENSSL_DH_H
d86167ec DMSP	12	# pragma once
	13
	14	# include <openssl/macros.h>
936c2b9e	15	# ifndef OPENSSL_NO_DEPRECATED_3_0
d86167ec DMSP	16	# define HEADER_DH_H
d86167ec DMSP	17	# endif
d02b48c6	18
98186eb4	19	# include <openssl/opensslconf.h>
d3ae5b1c	20
3c27208f	21	# ifndef OPENSSL_NO_DH
2c64df66 P	22	# include <openssl/e_os2.h>
	23	# include <openssl/bio.h>
	24	# include <openssl/asn1.h>
	25	# include <openssl/types.h>
	26	# ifndef OPENSSL_NO_DEPRECATED_1_1_0
	27	# include <openssl/bn.h>
	28	# endif
	29	# include <openssl/dherr.h>
5e3225cc	30
2c64df66	31	# ifdef __cplusplus
3c27208f	32	extern "C" {
2c64df66	33	# endif
3c27208f	34
2c64df66 P	35	# ifndef OPENSSL_DH_MAX_MODULUS_BITS
	36	# define OPENSSL_DH_MAX_MODULUS_BITS 10000
	37	# endif
83c3410b	38
2c64df66	39	# define OPENSSL_DH_FIPS_MIN_MODULUS_BITS 1024
0f113f3e	40
2c64df66	41	# define DH_FLAG_CACHE_MONT_P 0x01
5584f65a	42
2c64df66	43	# ifndef OPENSSL_NO_DEPRECATED_1_1_0
5584f65a MC	44	/*
	45	* Does nothing. Previously this switched off constant time behaviour.
	46	*/
2c64df66 P	47	# define DH_FLAG_NO_EXP_CONSTTIME 0x00
2c64df66 P	48	# endif
dfeab068	49
ada66e78	50	# ifndef OPENSSL_NO_DEPRECATED_3_0
0f113f3e MC	51	/*
	52	* If this flag is set the DH method is FIPS compliant and can be used in
	53	* FIPS mode. This is set in the validated module method. If an application
8483a003	54	* sets this flag in its own methods it is its responsibility to ensure the
0f113f3e	55	* result is compliant.
4960411e DSH	56	*/
4960411e DSH	57
ada66e78	58	# define DH_FLAG_FIPS_METHOD 0x0400
4960411e	59
0f113f3e MC	60	/*
0f113f3e MC	61	* If this flag is set the operations normally disabled in FIPS mode are
4960411e DSH	62	* permitted it is then the applications responsibility to ensure that the
	63	* usage is compliant.
	64	*/
	65
ada66e78 P	66	# define DH_FLAG_NON_FIPS_ALLOW 0x0400
ada66e78 P	67	# endif
4960411e	68
3a87a9b9 GT	69	/* Already defined in ossl_typ.h */
	70	/* typedef struct dh_st DH; */
	71	/* typedef struct dh_method DH_METHOD; */
13066cee	72
599eccfc RS	73	DECLARE_ASN1_ITEM(DHparams)
599eccfc RS	74
ada66e78 P	75	# ifndef OPENSSL_NO_DEPRECATED_3_0
	76	# define DH_GENERATOR_2 2
	77	# define DH_GENERATOR_3 3
	78	# define DH_GENERATOR_5 5
d02b48c6 RE	79
d02b48c6 RE	80	/* DH_check error codes */
92dcfb79 MC	81	/*
	82	* NB: These values must align with the equivalently named macros in
	83	* internal/ffc.h.
	84	*/
ada66e78 P	85	# define DH_CHECK_P_NOT_PRIME 0x01
	86	# define DH_CHECK_P_NOT_SAFE_PRIME 0x02
	87	# define DH_UNABLE_TO_CHECK_GENERATOR 0x04
	88	# define DH_NOT_SUITABLE_GENERATOR 0x08
	89	# define DH_CHECK_Q_NOT_PRIME 0x10
	90	# define DH_CHECK_INVALID_Q_VALUE 0x20
	91	# define DH_CHECK_INVALID_J_VALUE 0x40
	92	# define DH_MODULUS_TOO_SMALL 0x80
	93	# define DH_MODULUS_TOO_LARGE 0x100
d02b48c6	94
bf3d6c0c	95	/* DH_check_pub_key error codes */
ada66e78 P	96	# define DH_CHECK_PUBKEY_TOO_SMALL 0x01
	97	# define DH_CHECK_PUBKEY_TOO_LARGE 0x02
	98	# define DH_CHECK_PUBKEY_INVALID 0x04
bf3d6c0c	99
0f113f3e MC	100	/*
	101	* primes p where (p-1)/2 is prime too are called "safe"; we define this for
	102	* backward compatibility:
	103	*/
2c64df66	104	# define DH_CHECK_P_NOT_STRONG_PRIME DH_CHECK_P_NOT_SAFE_PRIME
4486d0cd	105
f11f86f6	106	/* DH parameter generation types used by EVP_PKEY_CTX_set_dh_paramgen_type() */
7165593c SL	107	# define DH_PARAMGEN_TYPE_GENERATOR 0 /* Use a safe prime generator */
7165593c SL	108	# define DH_PARAMGEN_TYPE_FIPS_186_2 1 /* Use FIPS186-2 standard */
ada66e78	109	# define DH_PARAMGEN_TYPE_FIPS_186_4 2 /* Use FIPS186-4 standard */
7165593c	110	# define DH_PARAMGEN_TYPE_GROUP 3 /* Use a named safe prime group */
ada66e78 P	111
	112	# define d2i_DHparams_fp(fp, x) \
	113	(DH )ASN1_d2i_fp((char (*)())DH_new, \
	114	(char ()())d2i_DHparams, \
	115	(fp), \
	116	(unsigned char **)(x))
	117	# define i2d_DHparams_fp(fp, x) \
	118	ASN1_i2d_fp(i2d_DHparams,(fp), (unsigned char *)(x))
	119	# define d2i_DHparams_bio(bp, x) \
	120	ASN1_d2i_bio_of(DH, DH_new, d2i_DHparams, bp, x)
	121	# define i2d_DHparams_bio(bp, x) \
	122	ASN1_i2d_bio_of(DH, i2d_DHparams, bp, x)
	123
	124	# define d2i_DHxparams_fp(fp,x) \
	125	(DH )ASN1_d2i_fp((char (*)())DH_new, \
	126	(char ()())d2i_DHxparams, \
	127	(fp), \
	128	(unsigned char **)(x))
	129	# define i2d_DHxparams_fp(fp, x) \
	130	ASN1_i2d_fp(i2d_DHxparams,(fp), (unsigned char *)(x))
	131	# define d2i_DHxparams_bio(bp, x) \
	132	ASN1_d2i_bio_of(DH, DH_new, d2i_DHxparams, bp, x)
	133	# define i2d_DHxparams_bio(bp, x) \
	134	ASN1_i2d_bio_of(DH, i2d_DHxparams, bp, x)
	135	# endif
d02b48c6	136
9fdcc21f	137	DECLARE_ASN1_DUP_FUNCTION_name(DH, DHparams)
f4274da1	138
ada66e78	139	DEPRECATEDIN_3_0(const DH_METHOD *DH_OpenSSL(void))
13066cee	140
ada66e78 P	141	DEPRECATEDIN_3_0(void DH_set_default_method(const DH_METHOD *meth))
	142	DEPRECATEDIN_3_0(const DH_METHOD *DH_get_default_method(void))
	143	DEPRECATEDIN_3_0(int DH_set_method(DH dh, const DH_METHOD meth))
	144	DEPRECATEDIN_3_0(DH DH_new_method(ENGINE engine))
13066cee	145
0f113f3e MC	146	DH *DH_new(void);
	147	void DH_free(DH *dh);
	148	int DH_up_ref(DH *dh);
ada66e78 P	149	DEPRECATEDIN_3_0(int DH_bits(const DH *dh))
	150	DEPRECATEDIN_3_0(int DH_size(const DH *dh))
	151	DEPRECATEDIN_3_0(int DH_security_bits(const DH *dh))
	152	# ifndef OPENSSL_NO_DEPRECATED_3_0
	153	# define DH_get_ex_new_index(l, p, newf, dupf, freef) \
	154	CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_DH, l, p, newf, dupf, freef)
	155	# endif
	156	DEPRECATEDIN_3_0(int DH_set_ex_data(DH d, int idx, void arg))
8cc86b81	157	DEPRECATEDIN_3_0(void DH_get_ex_data(const DH d, int idx))
e9224c71 GT	158
e9224c71 GT	159	/* Deprecated version */
98186eb4	160	DEPRECATEDIN_0_9_8(DH *DH_generate_parameters(int prime_len, int generator,
0f113f3e MC	161	void (*callback) (int, int,
0f113f3e MC	162	void *),
98186eb4	163	void *cb_arg))
e9224c71 GT	164
e9224c71 GT	165	/* New version */
ada66e78 P	166	DEPRECATEDIN_3_0(int DH_generate_parameters_ex(DH *dh, int prime_len,
ada66e78 P	167	int generator, BN_GENCB *cb))
0f113f3e	168
ada66e78 P	169	DEPRECATEDIN_3_0(int DH_check_params_ex(const DH *dh))
	170	DEPRECATEDIN_3_0(int DH_check_ex(const DH *dh))
	171	DEPRECATEDIN_3_0(int DH_check_pub_key_ex(const DH dh, const BIGNUM pub_key))
	172	/*
	173	* TODO(3.0): deprecate DH_check_params once ssl/statem/statem_clnt.c is fixed.
	174	*/
26505153	175	int DH_check_params(const DH dh, int ret);
ada66e78 P	176	DEPRECATEDIN_3_0(int DH_check(const DH dh, int codes))
	177	DEPRECATEDIN_3_0(int DH_check_pub_key(const DH dh, const BIGNUM pub_key,
	178	int *codes))
	179	DEPRECATEDIN_3_0(int DH_generate_key(DH *dh))
	180	DEPRECATEDIN_3_0(int DH_compute_key(unsigned char key, const BIGNUM pub_key,
	181	DH *dh))
	182	DEPRECATEDIN_3_0(int DH_compute_key_padded(unsigned char *key,
	183	const BIGNUM pub_key, DH dh))
9fdcc21f DO	184	DECLARE_ASN1_ENCODE_FUNCTIONS_only(DH, DHparams)
9fdcc21f DO	185	DECLARE_ASN1_ENCODE_FUNCTIONS_only(DH, DHxparams)
2c64df66	186	# ifndef OPENSSL_NO_STDIO
ada66e78	187	DEPRECATEDIN_3_0(int DHparams_print_fp(FILE fp, const DH x))
2c64df66	188	# endif
ada66e78	189	DEPRECATEDIN_3_0(int DHparams_print(BIO bp, const DH x))
d02b48c6	190
20bee968 DSH	191	/* RFC 5114 parameters */
	192	DH *DH_get_1024_160(void);
	193	DH *DH_get_2048_224(void);
	194	DH *DH_get_2048_256(void);
	195
ca2bf555	196	/* Named parameters, currently RFC7919 and RFC3526 */
ada66e78	197	/* TODO(3.0): deprecate DH_new_by_nid() after converting ssl/s3_lib.c */
7806a782	198	DH *DH_new_by_nid(int nid);
ada66e78	199	DEPRECATEDIN_3_0(int DH_get_nid(DH *dh))
7806a782	200
2c64df66	201	# ifndef OPENSSL_NO_CMS
dc1ce3bc	202	/* RFC2631 KDF */
ada66e78 P	203	DEPRECATEDIN_3_0(int DH_KDF_X9_42(unsigned char *out, size_t outlen,
	204	const unsigned char *Z, size_t Zlen,
	205	ASN1_OBJECT *key_oid,
	206	const unsigned char *ukm,
	207	size_t ukmlen, const EVP_MD *md))
2c64df66	208	# endif
0f113f3e	209
fd809cfd RL	210	void DH_get0_pqg(const DH *dh,
fd809cfd RL	211	const BIGNUM p, const BIGNUM q, const BIGNUM **g);
0aeddcfa	212	int DH_set0_pqg(DH dh, BIGNUM p, BIGNUM q, BIGNUM g);
fd809cfd RL	213	void DH_get0_key(const DH *dh,
fd809cfd RL	214	const BIGNUM pub_key, const BIGNUM priv_key);
0aeddcfa	215	int DH_set0_key(DH dh, BIGNUM pub_key, BIGNUM *priv_key);
6db7fadf DMSP	216	const BIGNUM DH_get0_p(const DH dh);
	217	const BIGNUM DH_get0_q(const DH dh);
	218	const BIGNUM DH_get0_g(const DH dh);
	219	const BIGNUM DH_get0_priv_key(const DH dh);
	220	const BIGNUM DH_get0_pub_key(const DH dh);
0aeddcfa MC	221	void DH_clear_flags(DH *dh, int flags);
	222	int DH_test_flags(const DH *dh, int flags);
	223	void DH_set_flags(DH *dh, int flags);
ada66e78 P	224	DEPRECATEDIN_3_0(ENGINE DH_get0_engine(DH d))
	225	DEPRECATEDIN_3_0(long DH_get_length(const DH *dh))
	226	DEPRECATEDIN_3_0(int DH_set_length(DH *dh, long length))
	227
	228	DEPRECATEDIN_3_0(DH_METHOD DH_meth_new(const char name, int flags))
	229	DEPRECATEDIN_3_0(void DH_meth_free(DH_METHOD *dhm))
	230	DEPRECATEDIN_3_0(DH_METHOD DH_meth_dup(const DH_METHOD dhm))
	231	DEPRECATEDIN_3_0(const char DH_meth_get0_name(const DH_METHOD dhm))
	232	DEPRECATEDIN_3_0(int DH_meth_set1_name(DH_METHOD dhm, const char name))
	233	DEPRECATEDIN_3_0(int DH_meth_get_flags(const DH_METHOD *dhm))
	234	DEPRECATEDIN_3_0(int DH_meth_set_flags(DH_METHOD *dhm, int flags))
	235	DEPRECATEDIN_3_0(void DH_meth_get0_app_data(const DH_METHOD dhm))
	236	DEPRECATEDIN_3_0(int DH_meth_set0_app_data(DH_METHOD dhm, void app_data))
	237	DEPRECATEDIN_3_0(int (DH_meth_get_generate_key(const DH_METHOD dhm)) (DH *))
	238	DEPRECATEDIN_3_0(int DH_meth_set_generate_key(DH_METHOD *dhm,
	239	int (generate_key) (DH )))
	240	DEPRECATEDIN_3_0(int (DH_meth_get_compute_key(const DH_METHOD dhm))
	241	(unsigned char *key,
	242	const BIGNUM pub_key, DH dh))
	243	DEPRECATEDIN_3_0(int DH_meth_set_compute_key(DH_METHOD *dhm,
	244	int (*compute_key)
	245	(unsigned char *key,
	246	const BIGNUM *pub_key,
	247	DH *dh)))
	248	DEPRECATEDIN_3_0(int (DH_meth_get_bn_mod_exp(const DH_METHOD dhm))
	249	(const DH , BIGNUM ,
	250	const BIGNUM *,
	251	const BIGNUM *,
	252	const BIGNUM , BN_CTX ,
	253	BN_MONT_CTX *))
	254	DEPRECATEDIN_3_0(int DH_meth_set_bn_mod_exp(DH_METHOD *dhm,
	255	int (*bn_mod_exp)
	256	(const DH , BIGNUM ,
	257	const BIGNUM , const BIGNUM ,
	258	const BIGNUM , BN_CTX ,
	259	BN_MONT_CTX *)))
	260	DEPRECATEDIN_3_0(int (DH_meth_get_init(const DH_METHOD dhm))(DH *))
	261	DEPRECATEDIN_3_0(int DH_meth_set_init(DH_METHOD dhm, int (init)(DH *)))
	262	DEPRECATEDIN_3_0(int (DH_meth_get_finish(const DH_METHOD dhm)) (DH *))
	263	DEPRECATEDIN_3_0(int DH_meth_set_finish(DH_METHOD dhm, int (finish) (DH *)))
	264	DEPRECATEDIN_3_0(int (DH_meth_get_generate_params(const DH_METHOD dhm))
	265	(DH *, int, int,
	266	BN_GENCB *))
	267	DEPRECATEDIN_3_0(int DH_meth_set_generate_params(DH_METHOD *dhm,
	268	int (*generate_params)
	269	(DH *, int, int,
	270	BN_GENCB *)))
0aeddcfa	271
7165593c SL	272	int EVP_PKEY_CTX_set_dh_paramgen_type(EVP_PKEY_CTX *ctx, int typ);
	273	int EVP_PKEY_CTX_set_dh_paramgen_gindex(EVP_PKEY_CTX *ctx, int gindex);
	274	int EVP_PKEY_CTX_set_dh_paramgen_seed(EVP_PKEY_CTX *ctx,
	275	const unsigned char *seed,
	276	size_t seedlen);
	277	int EVP_PKEY_CTX_set_dh_paramgen_prime_len(EVP_PKEY_CTX *ctx, int pbits);
	278	int EVP_PKEY_CTX_set_dh_paramgen_subprime_len(EVP_PKEY_CTX *ctx, int qlen);
	279	int EVP_PKEY_CTX_set_dh_paramgen_generator(EVP_PKEY_CTX *ctx, int gen);
	280	int EVP_PKEY_CTX_set_dh_nid(EVP_PKEY_CTX *ctx, int nid);
	281	int EVP_PKEY_CTX_set_dh_rfc5114(EVP_PKEY_CTX *ctx, int gen);
	282	int EVP_PKEY_CTX_set_dhx_rfc5114(EVP_PKEY_CTX *ctx, int gen);
35aca9ec	283	int EVP_PKEY_CTX_set_dh_pad(EVP_PKEY_CTX *ctx, int pad);
f4403a1f	284
2c64df66 P	285	# define EVP_PKEY_CTX_set_dh_kdf_type(ctx, kdf) \
	286	EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, EVP_PKEY_OP_DERIVE, \
	287	EVP_PKEY_CTRL_DH_KDF_TYPE, kdf, NULL)
	288
	289	# define EVP_PKEY_CTX_get_dh_kdf_type(ctx) \
	290	EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, EVP_PKEY_OP_DERIVE, \
	291	EVP_PKEY_CTRL_DH_KDF_TYPE, -2, NULL)
	292
	293	# define EVP_PKEY_CTX_set0_dh_kdf_oid(ctx, oid) \
	294	EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, EVP_PKEY_OP_DERIVE, \
	295	EVP_PKEY_CTRL_DH_KDF_OID, 0, (void *)(oid))
	296
	297	# define EVP_PKEY_CTX_get0_dh_kdf_oid(ctx, poid) \
	298	EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, EVP_PKEY_OP_DERIVE, \
	299	EVP_PKEY_CTRL_GET_DH_KDF_OID, 0, (void *)(poid))
	300
	301	# define EVP_PKEY_CTX_set_dh_kdf_md(ctx, md) \
	302	EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, EVP_PKEY_OP_DERIVE, \
	303	EVP_PKEY_CTRL_DH_KDF_MD, 0, (void *)(md))
	304
	305	# define EVP_PKEY_CTX_get_dh_kdf_md(ctx, pmd) \
	306	EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, EVP_PKEY_OP_DERIVE, \
	307	EVP_PKEY_CTRL_GET_DH_KDF_MD, 0, (void *)(pmd))
	308
	309	# define EVP_PKEY_CTX_set_dh_kdf_outlen(ctx, len) \
	310	EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, EVP_PKEY_OP_DERIVE, \
	311	EVP_PKEY_CTRL_DH_KDF_OUTLEN, len, NULL)
	312
	313	# define EVP_PKEY_CTX_get_dh_kdf_outlen(ctx, plen) \
	314	EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, EVP_PKEY_OP_DERIVE, \
	315	EVP_PKEY_CTRL_GET_DH_KDF_OUTLEN, 0, (void *)(plen))
	316
	317	# define EVP_PKEY_CTX_set0_dh_kdf_ukm(ctx, p, plen) \
	318	EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, EVP_PKEY_OP_DERIVE, \
	319	EVP_PKEY_CTRL_DH_KDF_UKM, plen, (void *)(p))
	320
	321	# define EVP_PKEY_CTX_get0_dh_kdf_ukm(ctx, p) \
	322	EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, EVP_PKEY_OP_DERIVE, \
	323	EVP_PKEY_CTRL_GET_DH_KDF_UKM, 0, (void *)(p))
	324
	325	# define EVP_PKEY_CTRL_DH_PARAMGEN_PRIME_LEN (EVP_PKEY_ALG_CTRL + 1)
	326	# define EVP_PKEY_CTRL_DH_PARAMGEN_GENERATOR (EVP_PKEY_ALG_CTRL + 2)
	327	# define EVP_PKEY_CTRL_DH_RFC5114 (EVP_PKEY_ALG_CTRL + 3)
	328	# define EVP_PKEY_CTRL_DH_PARAMGEN_SUBPRIME_LEN (EVP_PKEY_ALG_CTRL + 4)
	329	# define EVP_PKEY_CTRL_DH_PARAMGEN_TYPE (EVP_PKEY_ALG_CTRL + 5)
	330	# define EVP_PKEY_CTRL_DH_KDF_TYPE (EVP_PKEY_ALG_CTRL + 6)
	331	# define EVP_PKEY_CTRL_DH_KDF_MD (EVP_PKEY_ALG_CTRL + 7)
	332	# define EVP_PKEY_CTRL_GET_DH_KDF_MD (EVP_PKEY_ALG_CTRL + 8)
	333	# define EVP_PKEY_CTRL_DH_KDF_OUTLEN (EVP_PKEY_ALG_CTRL + 9)
	334	# define EVP_PKEY_CTRL_GET_DH_KDF_OUTLEN (EVP_PKEY_ALG_CTRL + 10)
	335	# define EVP_PKEY_CTRL_DH_KDF_UKM (EVP_PKEY_ALG_CTRL + 11)
	336	# define EVP_PKEY_CTRL_GET_DH_KDF_UKM (EVP_PKEY_ALG_CTRL + 12)
	337	# define EVP_PKEY_CTRL_DH_KDF_OID (EVP_PKEY_ALG_CTRL + 13)
	338	# define EVP_PKEY_CTRL_GET_DH_KDF_OID (EVP_PKEY_ALG_CTRL + 14)
	339	# define EVP_PKEY_CTRL_DH_NID (EVP_PKEY_ALG_CTRL + 15)
	340	# define EVP_PKEY_CTRL_DH_PAD (EVP_PKEY_ALG_CTRL + 16)
bd59f2b9 DSH	341
bd59f2b9 DSH	342	/* KDF types */
2c64df66 P	343	# define EVP_PKEY_DH_KDF_NONE 1
	344	# ifndef OPENSSL_NO_CMS
	345	# define EVP_PKEY_DH_KDF_X9_42 2
	346	# endif
3ba0885a	347
0cd0a820	348	# ifdef __cplusplus
d02b48c6	349	}
0cd0a820	350	# endif
3c27208f	351	# endif
d02b48c6	352	#endif