393 lines
16 KiB
C
393 lines
16 KiB
C
/* crypto/dh/dh.h */
|
|
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
|
|
* All rights reserved.
|
|
*
|
|
* This package is an SSL implementation written
|
|
* by Eric Young (eay@cryptsoft.com).
|
|
* The implementation was written so as to conform with Netscapes SSL.
|
|
*
|
|
* This library is free for commercial and non-commercial use as long as
|
|
* the following conditions are aheared to. The following conditions
|
|
* apply to all code found in this distribution, be it the RC4, RSA,
|
|
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
|
|
* included with this distribution is covered by the same copyright terms
|
|
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
|
|
*
|
|
* Copyright remains Eric Young's, and as such any Copyright notices in
|
|
* the code are not to be removed.
|
|
* If this package is used in a product, Eric Young should be given attribution
|
|
* as the author of the parts of the library used.
|
|
* This can be in the form of a textual message at program startup or
|
|
* in documentation (online or textual) provided with the package.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* "This product includes cryptographic software written by
|
|
* Eric Young (eay@cryptsoft.com)"
|
|
* The word 'cryptographic' can be left out if the rouines from the library
|
|
* being used are not cryptographic related :-).
|
|
* 4. If you include any Windows specific code (or a derivative thereof) from
|
|
* the apps directory (application code) you must include an acknowledgement:
|
|
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* The licence and distribution terms for any publically available version or
|
|
* derivative of this code cannot be changed. i.e. this code cannot simply be
|
|
* copied and put under another distribution licence
|
|
* [including the GNU Public Licence.]
|
|
*/
|
|
|
|
#ifndef HEADER_DH_H
|
|
# define HEADER_DH_H
|
|
|
|
# include <openssl/e_os2.h>
|
|
|
|
# ifdef OPENSSL_NO_DH
|
|
# error DH is disabled.
|
|
# endif
|
|
|
|
# ifndef OPENSSL_NO_BIO
|
|
# include <openssl/bio.h>
|
|
# endif
|
|
# include <openssl/ossl_typ.h>
|
|
# ifndef OPENSSL_NO_DEPRECATED
|
|
# include <openssl/bn.h>
|
|
# endif
|
|
|
|
# ifndef OPENSSL_DH_MAX_MODULUS_BITS
|
|
# define OPENSSL_DH_MAX_MODULUS_BITS 10000
|
|
# endif
|
|
|
|
# define DH_FLAG_CACHE_MONT_P 0x01
|
|
|
|
/*
|
|
* new with 0.9.7h; the built-in DH
|
|
* implementation now uses constant time
|
|
* modular exponentiation for secret exponents
|
|
* by default. This flag causes the
|
|
* faster variable sliding window method to
|
|
* be used for all exponents.
|
|
*/
|
|
# define DH_FLAG_NO_EXP_CONSTTIME 0x02
|
|
|
|
/*
|
|
* 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 reposibility 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
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* Already defined in ossl_typ.h */
|
|
/* typedef struct dh_st DH; */
|
|
/* typedef struct dh_method DH_METHOD; */
|
|
|
|
struct dh_method {
|
|
const char *name;
|
|
/* Methods here */
|
|
int (*generate_key) (DH *dh);
|
|
int (*compute_key) (unsigned char *key, const BIGNUM *pub_key, DH *dh);
|
|
/* Can be null */
|
|
int (*bn_mod_exp) (const DH *dh, BIGNUM *r, const BIGNUM *a,
|
|
const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
|
|
BN_MONT_CTX *m_ctx);
|
|
int (*init) (DH *dh);
|
|
int (*finish) (DH *dh);
|
|
int flags;
|
|
char *app_data;
|
|
/* If this is non-NULL, it will be used to generate parameters */
|
|
int (*generate_params) (DH *dh, int prime_len, int generator,
|
|
BN_GENCB *cb);
|
|
};
|
|
|
|
struct dh_st {
|
|
/*
|
|
* This first argument is used to pick up errors when a DH is passed
|
|
* instead of a EVP_PKEY
|
|
*/
|
|
int pad;
|
|
int version;
|
|
BIGNUM *p;
|
|
BIGNUM *g;
|
|
long length; /* optional */
|
|
BIGNUM *pub_key; /* g^x */
|
|
BIGNUM *priv_key; /* x */
|
|
int flags;
|
|
BN_MONT_CTX *method_mont_p;
|
|
/* Place holders if we want to do X9.42 DH */
|
|
BIGNUM *q;
|
|
BIGNUM *j;
|
|
unsigned char *seed;
|
|
int seedlen;
|
|
BIGNUM *counter;
|
|
int references;
|
|
CRYPTO_EX_DATA ex_data;
|
|
const DH_METHOD *meth;
|
|
ENGINE *engine;
|
|
};
|
|
|
|
# define DH_GENERATOR_2 2
|
|
/* #define DH_GENERATOR_3 3 */
|
|
# define DH_GENERATOR_5 5
|
|
|
|
/* DH_check error codes */
|
|
# 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
|
|
|
|
/* DH_check_pub_key error codes */
|
|
# define DH_CHECK_PUBKEY_TOO_SMALL 0x01
|
|
# define DH_CHECK_PUBKEY_TOO_LARGE 0x02
|
|
|
|
/*
|
|
* 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_const(DH,i2d_DHparams,bp,x)
|
|
|
|
DH *DHparams_dup(DH *);
|
|
|
|
const DH_METHOD *DH_OpenSSL(void);
|
|
|
|
void DH_set_default_method(const DH_METHOD *meth);
|
|
const DH_METHOD *DH_get_default_method(void);
|
|
int DH_set_method(DH *dh, const DH_METHOD *meth);
|
|
DH *DH_new_method(ENGINE *engine);
|
|
|
|
DH *DH_new(void);
|
|
void DH_free(DH *dh);
|
|
int DH_up_ref(DH *dh);
|
|
int DH_size(const DH *dh);
|
|
int DH_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
|
|
CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);
|
|
int DH_set_ex_data(DH *d, int idx, void *arg);
|
|
void *DH_get_ex_data(DH *d, int idx);
|
|
|
|
/* Deprecated version */
|
|
# ifndef OPENSSL_NO_DEPRECATED
|
|
DH *DH_generate_parameters(int prime_len, int generator,
|
|
void (*callback) (int, int, void *), void *cb_arg);
|
|
# endif /* !defined(OPENSSL_NO_DEPRECATED) */
|
|
|
|
/* New version */
|
|
int DH_generate_parameters_ex(DH *dh, int prime_len, int generator,
|
|
BN_GENCB *cb);
|
|
|
|
int DH_check(const DH *dh, int *codes);
|
|
int DH_check_pub_key(const DH *dh, const BIGNUM *pub_key, int *codes);
|
|
int DH_generate_key(DH *dh);
|
|
int DH_compute_key(unsigned char *key, const BIGNUM *pub_key, DH *dh);
|
|
int DH_compute_key_padded(unsigned char *key, const BIGNUM *pub_key, DH *dh);
|
|
DH *d2i_DHparams(DH **a, const unsigned char **pp, long length);
|
|
int i2d_DHparams(const DH *a, unsigned char **pp);
|
|
DH *d2i_DHxparams(DH **a, const unsigned char **pp, long length);
|
|
int i2d_DHxparams(const DH *a, unsigned char **pp);
|
|
# ifndef OPENSSL_NO_FP_API
|
|
int DHparams_print_fp(FILE *fp, const DH *x);
|
|
# endif
|
|
# ifndef OPENSSL_NO_BIO
|
|
int DHparams_print(BIO *bp, const DH *x);
|
|
# else
|
|
int DHparams_print(char *bp, const DH *x);
|
|
# endif
|
|
|
|
/* RFC 5114 parameters */
|
|
DH *DH_get_1024_160(void);
|
|
DH *DH_get_2048_224(void);
|
|
DH *DH_get_2048_256(void);
|
|
|
|
/* RFC2631 KDF */
|
|
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);
|
|
|
|
# define EVP_PKEY_CTX_set_dh_paramgen_prime_len(ctx, len) \
|
|
EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_PARAMGEN, \
|
|
EVP_PKEY_CTRL_DH_PARAMGEN_PRIME_LEN, len, NULL)
|
|
|
|
# define EVP_PKEY_CTX_set_dh_paramgen_subprime_len(ctx, len) \
|
|
EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_PARAMGEN, \
|
|
EVP_PKEY_CTRL_DH_PARAMGEN_SUBPRIME_LEN, len, NULL)
|
|
|
|
# define EVP_PKEY_CTX_set_dh_paramgen_type(ctx, typ) \
|
|
EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_PARAMGEN, \
|
|
EVP_PKEY_CTRL_DH_PARAMGEN_TYPE, typ, NULL)
|
|
|
|
# define EVP_PKEY_CTX_set_dh_paramgen_generator(ctx, gen) \
|
|
EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_PARAMGEN, \
|
|
EVP_PKEY_CTRL_DH_PARAMGEN_GENERATOR, gen, NULL)
|
|
|
|
# define EVP_PKEY_CTX_set_dh_rfc5114(ctx, gen) \
|
|
EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, EVP_PKEY_OP_PARAMGEN, \
|
|
EVP_PKEY_CTRL_DH_RFC5114, gen, NULL)
|
|
|
|
# define EVP_PKEY_CTX_set_dhx_rfc5114(ctx, gen) \
|
|
EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, EVP_PKEY_OP_PARAMGEN, \
|
|
EVP_PKEY_CTRL_DH_RFC5114, gen, NULL)
|
|
|
|
# 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)
|
|
|
|
/* KDF types */
|
|
# define EVP_PKEY_DH_KDF_NONE 1
|
|
# define EVP_PKEY_DH_KDF_X9_42 2
|
|
|
|
/* BEGIN ERROR CODES */
|
|
/*
|
|
* The following lines are auto generated by the script mkerr.pl. Any changes
|
|
* made after this point may be overwritten when the script is next run.
|
|
*/
|
|
void ERR_load_DH_strings(void);
|
|
|
|
/* Error codes for the DH functions. */
|
|
|
|
/* Function codes. */
|
|
# define DH_F_COMPUTE_KEY 102
|
|
# define DH_F_DHPARAMS_PRINT_FP 101
|
|
# define DH_F_DH_BUILTIN_GENPARAMS 106
|
|
# define DH_F_DH_CMS_DECRYPT 117
|
|
# define DH_F_DH_CMS_SET_PEERKEY 118
|
|
# define DH_F_DH_CMS_SET_SHARED_INFO 119
|
|
# define DH_F_DH_COMPUTE_KEY 114
|
|
# define DH_F_DH_GENERATE_KEY 115
|
|
# define DH_F_DH_GENERATE_PARAMETERS_EX 116
|
|
# define DH_F_DH_NEW_METHOD 105
|
|
# define DH_F_DH_PARAM_DECODE 107
|
|
# define DH_F_DH_PRIV_DECODE 110
|
|
# define DH_F_DH_PRIV_ENCODE 111
|
|
# define DH_F_DH_PUB_DECODE 108
|
|
# define DH_F_DH_PUB_ENCODE 109
|
|
# define DH_F_DO_DH_PRINT 100
|
|
# define DH_F_GENERATE_KEY 103
|
|
# define DH_F_GENERATE_PARAMETERS 104
|
|
# define DH_F_PKEY_DH_DERIVE 112
|
|
# define DH_F_PKEY_DH_KEYGEN 113
|
|
|
|
/* Reason codes. */
|
|
# define DH_R_BAD_GENERATOR 101
|
|
# define DH_R_BN_DECODE_ERROR 109
|
|
# define DH_R_BN_ERROR 106
|
|
# define DH_R_DECODE_ERROR 104
|
|
# define DH_R_INVALID_PUBKEY 102
|
|
# define DH_R_KDF_PARAMETER_ERROR 112
|
|
# define DH_R_KEYS_NOT_SET 108
|
|
# define DH_R_KEY_SIZE_TOO_SMALL 110
|
|
# define DH_R_MODULUS_TOO_LARGE 103
|
|
# define DH_R_NON_FIPS_METHOD 111
|
|
# define DH_R_NO_PARAMETERS_SET 107
|
|
# define DH_R_NO_PRIVATE_VALUE 100
|
|
# define DH_R_PARAMETER_ENCODING_ERROR 105
|
|
# define DH_R_PEER_KEY_ERROR 113
|
|
# define DH_R_SHARED_INFO_ERROR 114
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
#endif
|