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287 lines
11 KiB
287 lines
11 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 */ |
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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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/* 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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/* |
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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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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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# 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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# 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_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_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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/* 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_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_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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#ifdef __cplusplus |
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} |
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#endif |
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#endif
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