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393 lines
16 KiB
393 lines
16 KiB
/* crypto/dh/dh.h */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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#ifndef HEADER_DH_H
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# define HEADER_DH_H
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# include <openssl/e_os2.h>
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# ifdef OPENSSL_NO_DH
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# error DH is disabled.
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# endif
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# ifndef OPENSSL_NO_BIO
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# include <openssl/bio.h>
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# endif
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# include <openssl/ossl_typ.h>
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# ifndef OPENSSL_NO_DEPRECATED
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# include <openssl/bn.h>
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# endif
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# ifndef OPENSSL_DH_MAX_MODULUS_BITS
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# define OPENSSL_DH_MAX_MODULUS_BITS 10000
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# endif
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# define DH_FLAG_CACHE_MONT_P 0x01
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/*
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* new with 0.9.7h; the built-in DH
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* implementation now uses constant time
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* modular exponentiation for secret exponents
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* by default. This flag causes the
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* faster variable sliding window method to
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* be used for all exponents.
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*/
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# define DH_FLAG_NO_EXP_CONSTTIME 0x02
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/*
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* If this flag is set the DH method is FIPS compliant and can be used in
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* FIPS mode. This is set in the validated module method. If an application
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* sets this flag in its own methods it is its reposibility to ensure the
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* result is compliant.
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*/
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# define DH_FLAG_FIPS_METHOD 0x0400
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/*
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* If this flag is set the operations normally disabled in FIPS mode are
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* permitted it is then the applications responsibility to ensure that the
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* usage is compliant.
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*/
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# define DH_FLAG_NON_FIPS_ALLOW 0x0400
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Already defined in ossl_typ.h */
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/* typedef struct dh_st DH; */
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/* typedef struct dh_method DH_METHOD; */
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struct dh_method {
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const char *name;
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/* Methods here */
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int (*generate_key) (DH *dh);
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int (*compute_key) (unsigned char *key, const BIGNUM *pub_key, DH *dh);
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/* Can be null */
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int (*bn_mod_exp) (const DH *dh, BIGNUM *r, const BIGNUM *a,
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const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
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BN_MONT_CTX *m_ctx);
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int (*init) (DH *dh);
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int (*finish) (DH *dh);
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int flags;
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char *app_data;
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/* If this is non-NULL, it will be used to generate parameters */
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int (*generate_params) (DH *dh, int prime_len, int generator,
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BN_GENCB *cb);
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};
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struct dh_st {
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/*
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* This first argument is used to pick up errors when a DH is passed
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* instead of a EVP_PKEY
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*/
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int pad;
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int version;
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BIGNUM *p;
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BIGNUM *g;
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long length; /* optional */
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BIGNUM *pub_key; /* g^x % p */
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BIGNUM *priv_key; /* x */
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int flags;
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BN_MONT_CTX *method_mont_p;
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/* Place holders if we want to do X9.42 DH */
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BIGNUM *q;
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BIGNUM *j;
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unsigned char *seed;
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int seedlen;
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BIGNUM *counter;
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int references;
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CRYPTO_EX_DATA ex_data;
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const DH_METHOD *meth;
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ENGINE *engine;
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};
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# define DH_GENERATOR_2 2
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/* #define DH_GENERATOR_3 3 */
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# define DH_GENERATOR_5 5
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/* DH_check error codes */
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# define DH_CHECK_P_NOT_PRIME 0x01
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# define DH_CHECK_P_NOT_SAFE_PRIME 0x02
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# define DH_UNABLE_TO_CHECK_GENERATOR 0x04
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# define DH_NOT_SUITABLE_GENERATOR 0x08
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# define DH_CHECK_Q_NOT_PRIME 0x10
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# define DH_CHECK_INVALID_Q_VALUE 0x20
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# define DH_CHECK_INVALID_J_VALUE 0x40
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/* DH_check_pub_key error codes */
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# define DH_CHECK_PUBKEY_TOO_SMALL 0x01
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# define DH_CHECK_PUBKEY_TOO_LARGE 0x02
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# define DH_CHECK_PUBKEY_INVALID 0x04
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/*
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* primes p where (p-1)/2 is prime too are called "safe"; we define this for
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* backward compatibility:
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*/
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# define DH_CHECK_P_NOT_STRONG_PRIME DH_CHECK_P_NOT_SAFE_PRIME
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# define d2i_DHparams_fp(fp,x) (DH *)ASN1_d2i_fp((char *(*)())DH_new, \
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(char *(*)())d2i_DHparams,(fp),(unsigned char **)(x))
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# define i2d_DHparams_fp(fp,x) ASN1_i2d_fp(i2d_DHparams,(fp), \
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(unsigned char *)(x))
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# define d2i_DHparams_bio(bp,x) ASN1_d2i_bio_of(DH,DH_new,d2i_DHparams,bp,x)
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# define i2d_DHparams_bio(bp,x) ASN1_i2d_bio_of_const(DH,i2d_DHparams,bp,x)
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DH *DHparams_dup(DH *);
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const DH_METHOD *DH_OpenSSL(void);
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void DH_set_default_method(const DH_METHOD *meth);
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const DH_METHOD *DH_get_default_method(void);
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int DH_set_method(DH *dh, const DH_METHOD *meth);
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DH *DH_new_method(ENGINE *engine);
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DH *DH_new(void);
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void DH_free(DH *dh);
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int DH_up_ref(DH *dh);
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int DH_size(const DH *dh);
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int DH_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
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CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);
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int DH_set_ex_data(DH *d, int idx, void *arg);
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void *DH_get_ex_data(DH *d, int idx);
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/* Deprecated version */
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# ifndef OPENSSL_NO_DEPRECATED
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DH *DH_generate_parameters(int prime_len, int generator,
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void (*callback) (int, int, void *), void *cb_arg);
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# endif /* !defined(OPENSSL_NO_DEPRECATED) */
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/* New version */
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int DH_generate_parameters_ex(DH *dh, int prime_len, int generator,
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BN_GENCB *cb);
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int DH_check(const DH *dh, int *codes);
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int DH_check_pub_key(const DH *dh, const BIGNUM *pub_key, int *codes);
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int DH_generate_key(DH *dh);
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int DH_compute_key(unsigned char *key, const BIGNUM *pub_key, DH *dh);
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int DH_compute_key_padded(unsigned char *key, const BIGNUM *pub_key, DH *dh);
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DH *d2i_DHparams(DH **a, const unsigned char **pp, long length);
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int i2d_DHparams(const DH *a, unsigned char **pp);
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DH *d2i_DHxparams(DH **a, const unsigned char **pp, long length);
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int i2d_DHxparams(const DH *a, unsigned char **pp);
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# ifndef OPENSSL_NO_FP_API
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int DHparams_print_fp(FILE *fp, const DH *x);
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# endif
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# ifndef OPENSSL_NO_BIO
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int DHparams_print(BIO *bp, const DH *x);
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# else
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int DHparams_print(char *bp, const DH *x);
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# endif
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/* RFC 5114 parameters */
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DH *DH_get_1024_160(void);
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DH *DH_get_2048_224(void);
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DH *DH_get_2048_256(void);
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/* RFC2631 KDF */
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int DH_KDF_X9_42(unsigned char *out, size_t outlen,
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const unsigned char *Z, size_t Zlen,
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ASN1_OBJECT *key_oid,
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const unsigned char *ukm, size_t ukmlen, const EVP_MD *md);
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# define EVP_PKEY_CTX_set_dh_paramgen_prime_len(ctx, len) \
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EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_PARAMGEN, \
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EVP_PKEY_CTRL_DH_PARAMGEN_PRIME_LEN, len, NULL)
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# define EVP_PKEY_CTX_set_dh_paramgen_subprime_len(ctx, len) \
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EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_PARAMGEN, \
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EVP_PKEY_CTRL_DH_PARAMGEN_SUBPRIME_LEN, len, NULL)
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# define EVP_PKEY_CTX_set_dh_paramgen_type(ctx, typ) \
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EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_PARAMGEN, \
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EVP_PKEY_CTRL_DH_PARAMGEN_TYPE, typ, NULL)
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# define EVP_PKEY_CTX_set_dh_paramgen_generator(ctx, gen) \
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EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_PARAMGEN, \
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EVP_PKEY_CTRL_DH_PARAMGEN_GENERATOR, gen, NULL)
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# define EVP_PKEY_CTX_set_dh_rfc5114(ctx, gen) \
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EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, EVP_PKEY_OP_PARAMGEN, \
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EVP_PKEY_CTRL_DH_RFC5114, gen, NULL)
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# define EVP_PKEY_CTX_set_dhx_rfc5114(ctx, gen) \
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EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, EVP_PKEY_OP_PARAMGEN, \
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EVP_PKEY_CTRL_DH_RFC5114, gen, NULL)
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# define EVP_PKEY_CTX_set_dh_kdf_type(ctx, kdf) \
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EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, \
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EVP_PKEY_OP_DERIVE, \
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EVP_PKEY_CTRL_DH_KDF_TYPE, kdf, NULL)
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# define EVP_PKEY_CTX_get_dh_kdf_type(ctx) \
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EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, \
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EVP_PKEY_OP_DERIVE, \
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EVP_PKEY_CTRL_DH_KDF_TYPE, -2, NULL)
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# define EVP_PKEY_CTX_set0_dh_kdf_oid(ctx, oid) \
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EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, \
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EVP_PKEY_OP_DERIVE, \
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EVP_PKEY_CTRL_DH_KDF_OID, 0, (void *)oid)
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# define EVP_PKEY_CTX_get0_dh_kdf_oid(ctx, poid) \
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EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, \
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EVP_PKEY_OP_DERIVE, \
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EVP_PKEY_CTRL_GET_DH_KDF_OID, 0, (void *)poid)
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# define EVP_PKEY_CTX_set_dh_kdf_md(ctx, md) \
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EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, \
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EVP_PKEY_OP_DERIVE, \
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EVP_PKEY_CTRL_DH_KDF_MD, 0, (void *)md)
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# define EVP_PKEY_CTX_get_dh_kdf_md(ctx, pmd) \
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EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, \
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EVP_PKEY_OP_DERIVE, \
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EVP_PKEY_CTRL_GET_DH_KDF_MD, 0, (void *)pmd)
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# define EVP_PKEY_CTX_set_dh_kdf_outlen(ctx, len) \
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EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, \
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EVP_PKEY_OP_DERIVE, \
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EVP_PKEY_CTRL_DH_KDF_OUTLEN, len, NULL)
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# define EVP_PKEY_CTX_get_dh_kdf_outlen(ctx, plen) \
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EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, \
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EVP_PKEY_OP_DERIVE, \
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EVP_PKEY_CTRL_GET_DH_KDF_OUTLEN, 0, (void *)plen)
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# define EVP_PKEY_CTX_set0_dh_kdf_ukm(ctx, p, plen) \
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EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, \
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EVP_PKEY_OP_DERIVE, \
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EVP_PKEY_CTRL_DH_KDF_UKM, plen, (void *)p)
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# define EVP_PKEY_CTX_get0_dh_kdf_ukm(ctx, p) \
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EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, \
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EVP_PKEY_OP_DERIVE, \
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EVP_PKEY_CTRL_GET_DH_KDF_UKM, 0, (void *)p)
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# define EVP_PKEY_CTRL_DH_PARAMGEN_PRIME_LEN (EVP_PKEY_ALG_CTRL + 1)
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# define EVP_PKEY_CTRL_DH_PARAMGEN_GENERATOR (EVP_PKEY_ALG_CTRL + 2)
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# define EVP_PKEY_CTRL_DH_RFC5114 (EVP_PKEY_ALG_CTRL + 3)
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# define EVP_PKEY_CTRL_DH_PARAMGEN_SUBPRIME_LEN (EVP_PKEY_ALG_CTRL + 4)
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# define EVP_PKEY_CTRL_DH_PARAMGEN_TYPE (EVP_PKEY_ALG_CTRL + 5)
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# define EVP_PKEY_CTRL_DH_KDF_TYPE (EVP_PKEY_ALG_CTRL + 6)
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# define EVP_PKEY_CTRL_DH_KDF_MD (EVP_PKEY_ALG_CTRL + 7)
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# define EVP_PKEY_CTRL_GET_DH_KDF_MD (EVP_PKEY_ALG_CTRL + 8)
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# define EVP_PKEY_CTRL_DH_KDF_OUTLEN (EVP_PKEY_ALG_CTRL + 9)
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# define EVP_PKEY_CTRL_GET_DH_KDF_OUTLEN (EVP_PKEY_ALG_CTRL + 10)
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# define EVP_PKEY_CTRL_DH_KDF_UKM (EVP_PKEY_ALG_CTRL + 11)
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# define EVP_PKEY_CTRL_GET_DH_KDF_UKM (EVP_PKEY_ALG_CTRL + 12)
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# define EVP_PKEY_CTRL_DH_KDF_OID (EVP_PKEY_ALG_CTRL + 13)
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# define EVP_PKEY_CTRL_GET_DH_KDF_OID (EVP_PKEY_ALG_CTRL + 14)
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/* KDF types */
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# define EVP_PKEY_DH_KDF_NONE 1
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# define EVP_PKEY_DH_KDF_X9_42 2
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/* BEGIN ERROR CODES */
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/*
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* The following lines are auto generated by the script mkerr.pl. Any changes
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* made after this point may be overwritten when the script is next run.
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*/
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void ERR_load_DH_strings(void);
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/* Error codes for the DH functions. */
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/* Function codes. */
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# define DH_F_COMPUTE_KEY 102
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# define DH_F_DHPARAMS_PRINT_FP 101
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# define DH_F_DH_BUILTIN_GENPARAMS 106
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# define DH_F_DH_CMS_DECRYPT 117
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# define DH_F_DH_CMS_SET_PEERKEY 118
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# define DH_F_DH_CMS_SET_SHARED_INFO 119
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# define DH_F_DH_COMPUTE_KEY 114
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# define DH_F_DH_GENERATE_KEY 115
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# define DH_F_DH_GENERATE_PARAMETERS_EX 116
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# define DH_F_DH_NEW_METHOD 105
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# define DH_F_DH_PARAM_DECODE 107
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# define DH_F_DH_PRIV_DECODE 110
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# define DH_F_DH_PRIV_ENCODE 111
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# define DH_F_DH_PUB_DECODE 108
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# define DH_F_DH_PUB_ENCODE 109
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# define DH_F_DO_DH_PRINT 100
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# define DH_F_GENERATE_KEY 103
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# define DH_F_GENERATE_PARAMETERS 104
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# define DH_F_PKEY_DH_DERIVE 112
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# define DH_F_PKEY_DH_KEYGEN 113
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/* Reason codes. */
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# define DH_R_BAD_GENERATOR 101
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# define DH_R_BN_DECODE_ERROR 109
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# define DH_R_BN_ERROR 106
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# define DH_R_DECODE_ERROR 104
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# define DH_R_INVALID_PUBKEY 102
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# define DH_R_KDF_PARAMETER_ERROR 112
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# define DH_R_KEYS_NOT_SET 108
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# define DH_R_KEY_SIZE_TOO_SMALL 110
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# define DH_R_MODULUS_TOO_LARGE 103
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# define DH_R_NON_FIPS_METHOD 111
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# define DH_R_NO_PARAMETERS_SET 107
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# define DH_R_NO_PRIVATE_VALUE 100
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# define DH_R_PARAMETER_ENCODING_ERROR 105
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# define DH_R_PEER_KEY_ERROR 113
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# define DH_R_SHARED_INFO_ERROR 114
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#ifdef __cplusplus
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}
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#endif
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#endif
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