diff options
Diffstat (limited to 'openssl/crypto/dh/dh.h')
| -rw-r--r-- | openssl/crypto/dh/dh.h | 245 |
1 files changed, 245 insertions, 0 deletions
diff --git a/openssl/crypto/dh/dh.h b/openssl/crypto/dh/dh.h new file mode 100644 index 000000000..10475ac4b --- /dev/null +++ b/openssl/crypto/dh/dh.h @@ -0,0 +1,245 @@ +/* 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 OPENSSL_DH_FIPS_MIN_MODULUS_BITS 1024 + +#define DH_FLAG_CACHE_MONT_P 0x01 +#define DH_FLAG_NO_EXP_CONSTTIME 0x02 /* 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. + */ + +#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); + 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); /* Can be null */ + + 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 + +/* 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 DHparams_dup(x) ASN1_dup_of_const(DH,i2d_DHparams,d2i_DHparams,x) +#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) + +const DH_METHOD *DH_OpenSSL(void); + +#ifdef OPENSSL_FIPS +DH * FIPS_dh_new(void); +void FIPS_dh_free(DH *dh); +#endif + +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); +DH * d2i_DHparams(DH **a,const unsigned char **pp, long length); +int i2d_DHparams(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 + +/* 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 100 +#define DH_F_DHPARAMS_PRINT_FP 101 +#define DH_F_DH_BUILTIN_GENPARAMS 106 +#define DH_F_DH_COMPUTE_KEY 107 +#define DH_F_DH_GENERATE_KEY 108 +#define DH_F_DH_GENERATE_PARAMETERS 109 +#define DH_F_DH_NEW_METHOD 105 +#define DH_F_GENERATE_KEY 103 +#define DH_F_GENERATE_PARAMETERS 104 + +/* Reason codes. */ +#define DH_R_BAD_GENERATOR 101 +#define DH_R_INVALID_PUBKEY 102 +#define DH_R_KEY_SIZE_TOO_SMALL 104 +#define DH_R_MODULUS_TOO_LARGE 103 +#define DH_R_NO_PRIVATE_VALUE 100 + +#ifdef __cplusplus +} +#endif +#endif |