X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fdh%2Fdh.h;h=7871882e35a40865e43e64f034735fca0c794b6e;hp=1152fbb2d3c6390bef681b628d081c72da2bd10f;hb=244847591f359be542d8d0fe995c349103cc7ac6;hpb=4d7072f4b5b536c080854eba4b0092d80adf4d37

diff --git a/crypto/dh/dh.h b/crypto/dh/dh.h
index 1152fbb2d3..7871882e35 100644
--- a/crypto/dh/dh.h
+++ b/crypto/dh/dh.h
@@ -59,6 +59,8 @@
 #ifndef HEADER_DH_H
 #define HEADER_DH_H
 
+#include <openssl/e_os2.h>
+
 #ifdef OPENSSL_NO_DH
 #error DH is disabled.
 #endif
@@ -66,19 +68,30 @@
 #ifndef OPENSSL_NO_BIO
 #include <openssl/bio.h>
 #endif
-#include <openssl/bn.h>
-#include <openssl/crypto.h>
 #include <openssl/ossl_typ.h>
+#ifndef OPENSSL_NO_DEPRECATED
+#include <openssl/bn.h>
+#endif
 	
-#define DH_FLAG_CACHE_MONT_P	0x01
+#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
 
-typedef struct dh_st DH;
+/* Already defined in ossl_typ.h */
+/* typedef struct dh_st DH; */
+/* typedef struct dh_method DH_METHOD; */
 
-typedef struct dh_method {
+struct dh_method
+	{
 	const char *name;
 	/* Methods here */
 	int (*generate_key)(DH *dh);
@@ -91,7 +104,9 @@ typedef struct dh_method {
 	int (*finish)(DH *dh);
 	int flags;
 	char *app_data;
-} DH_METHOD;
+	/* 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
 	{
@@ -101,12 +116,12 @@ struct dh_st
 	int version;
 	BIGNUM *p;
 	BIGNUM *g;
-	int length; /* optional */
+	long length; /* optional */
 	BIGNUM *pub_key;	/* g^x */
 	BIGNUM *priv_key;	/* x */
 
 	int flags;
-	char *method_mont_p;
+	BN_MONT_CTX *method_mont_p;
 	/* Place holders if we want to do X9.42 DH */
 	BIGNUM *q;
 	BIGNUM *j;
@@ -130,25 +145,21 @@ struct dh_st
 #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) (DH *)ASN1_dup((int (*)())i2d_DHparams, \
-		(char *(*)())d2i_DHparams,(char *)(x))
+#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) (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
+#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);
 
@@ -165,9 +176,18 @@ 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);
@@ -190,15 +210,18 @@ 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_COMPUTE_KEY				 102
-#define DH_F_DH_GENERATE_KEY				 103
-#define DH_F_DH_GENERATE_PARAMETERS			 104
-#define DH_F_DH_NEW					 105
+#define DH_F_DH_BUILTIN_GENPARAMS			 106
+#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_NO_PRIVATE_VALUE				 100
+#define DH_R_INVALID_PUBKEY				 102
 
 #ifdef  __cplusplus
 }