X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fdh%2Fdh.h;h=c41ace5bea74c7a57bb16af8ae5d1109d54e656c;hp=c3592bd02bb502758b03fed8c2f2fe1f06b0bc55;hb=dd9d233e2aa493fa1398b527afbf6aa5cdb23f23;hpb=6d31193858f176c276fe5f27d36408977933c1d6

diff --git a/crypto/dh/dh.h b/crypto/dh/dh.h
index c3592bd02b..c41ace5bea 100644
--- a/crypto/dh/dh.h
+++ b/crypto/dh/dh.h
@@ -63,11 +63,33 @@
 extern "C" {
 #endif
 
+#ifdef NO_DH
+#error DH is disabled.
+#endif
+
 #include <openssl/bn.h>
+#include <openssl/crypto.h>
 	
 #define DH_FLAG_CACHE_MONT_P	0x01
 
-typedef struct dh_st
+typedef struct dh_st DH;
+
+typedef struct dh_method {
+	const char *name;
+	/* Methods here */
+	int (*generate_key)(DH *dh);
+	int (*compute_key)(unsigned char *key,BIGNUM *pub_key,DH *dh);
+	int (*bn_mod_exp)(DH *dh, BIGNUM *r, 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;
+} DH_METHOD;
+
+struct dh_st
 	{
 	/* This first argument is used to pick up errors when
 	 * a DH is passed instead of a EVP_PKEY */
@@ -76,12 +98,22 @@ typedef struct dh_st
 	BIGNUM *p;
 	BIGNUM *g;
 	int length; /* optional */
-	BIGNUM *pub_key;	/* y */
+	BIGNUM *pub_key;	/* g^x */
 	BIGNUM *priv_key;	/* x */
 
 	int flags;
 	char *method_mont_p;
-	} DH;
+	/* Place holders if we want to do X9.42 DH */
+	BIGNUM *q;
+	BIGNUM *j;
+	unsigned *seed;
+	int seedlen;
+	BIGNUM *counter;
+
+	int references;
+	CRYPTO_EX_DATA ex_data;
+	DH_METHOD *meth;
+	};
 
 #define DH_GENERATOR_2		2
 /* #define DH_GENERATOR_3	3 */
@@ -89,10 +121,14 @@ typedef struct dh_st
 
 /* DH_check error codes */
 #define DH_CHECK_P_NOT_PRIME		0x01
-#define DH_CHECK_P_NOT_STRONG_PRIME	0x02
+#define DH_CHECK_P_NOT_SAFE_PRIME	0x02
 #define DH_UNABLE_TO_CHECK_GENERATOR	0x04
 #define DH_NOT_SUITABLE_GENERATOR	0x08
 
+/* 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) (DH *)ASN1_dup((int (*)())i2d_DHparams, \
 		(char *(*)())d2i_DHparams,(char *)(x))
 #define d2i_DHparams_fp(fp,x) (DH *)ASN1_d2i_fp((char *(*)())DH_new, \
@@ -101,15 +137,30 @@ typedef struct dh_st
 		(unsigned char *)(x))
 #define d2i_DHparams_bio(bp,x) (DH *)ASN1_d2i_bio((char *(*)())DH_new, \
 		(char *(*)())d2i_DHparams,(bp),(unsigned char **)(x))
+#ifdef  __cplusplus
+#define i2d_DHparams_bio(bp,x) ASN1_i2d_bio((int (*)())i2d_DHparams,(bp), \
+		(unsigned char *)(x))
+#else
 #define i2d_DHparams_bio(bp,x) ASN1_i2d_bio(i2d_DHparams,(bp), \
 		(unsigned char *)(x))
+#endif
+
+DH_METHOD *DH_OpenSSL(void);
+
+void DH_set_default_method(DH_METHOD *meth);
+DH_METHOD *DH_get_default_method(void);
+DH_METHOD *DH_set_method(DH *dh, DH_METHOD *meth);
+DH *DH_new_method(DH_METHOD *meth);
 
-#ifndef NOPROTO
 DH *	DH_new(void);
 void	DH_free(DH *dh);
 int	DH_size(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);
 DH *	DH_generate_parameters(int prime_len,int generator,
-		void (*callback)(int,int,char *),char *cb_arg);
+		void (*callback)(int,int,void *),void *cb_arg);
 int	DH_check(DH *dh,int *codes);
 int	DH_generate_key(DH *dh);
 int	DH_compute_key(unsigned char *key,BIGNUM *pub_key,DH *dh);
@@ -125,25 +176,6 @@ int	DHparams_print(char *bp, DH *x);
 #endif
 void	ERR_load_DH_strings(void );
 
-#else
-
-DH *	DH_new();
-void	DH_free();
-int	DH_size();
-DH *	DH_generate_parameters();
-int	DH_check();
-int	DH_generate_key();
-int	DH_compute_key();
-DH *	d2i_DHparams();
-int	i2d_DHparams();
-#ifndef NO_FP_API
-int	DHparams_print_fp();
-#endif
-int	DHparams_print();
-void	ERR_load_DH_strings();
-
-#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.