Add the possibility to build without the ENGINE framework.

[openssl.git] / crypto / dh / dh.h

diff --git a/crypto/dh/dh.h b/crypto/dh/dh.h
index a15fc1c65f7ec0fd6f3dd102d6355a9b49fcc711..38214082f7ef168a08ac3184fc942aacb06e7a9c 100644 (file)
--- a/crypto/dh/dh.h
+++ b/crypto/dh/dh.h
@@ -59,15 +59,16 @@
 #ifndef HEADER_DH_H
 #define HEADER_DH_H
 
-#ifdef NO_DH
+#ifdef OPENSSL_NO_DH
 #error DH is disabled.
 #endif
 
-#ifndef NO_BIO
+#ifndef OPENSSL_NO_BIO
 #include <openssl/bio.h>
 #endif
 #include <openssl/bn.h>
 #include <openssl/crypto.h>
+#include <openssl/ossl_typ.h>
        
 #define DH_FLAG_CACHE_MONT_P   0x01
 
@@ -81,15 +82,17 @@ 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,
+       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);
 } DH_METHOD;
 
 struct dh_st
@@ -100,7 +103,7 @@ struct dh_st
        int version;
        BIGNUM *p;
        BIGNUM *g;
-       int length; /* optional */
+       long length; /* optional */
        BIGNUM *pub_key;        /* g^x */
        BIGNUM *priv_key;       /* x */
 
@@ -115,7 +118,10 @@ struct dh_st
 
        int references;
        CRYPTO_EX_DATA ex_data;
-       DH_METHOD *meth;
+       const DH_METHOD *meth;
+#ifndef OPENSSL_NO_ENGINE
+       ENGINE *engine;
+#endif
        };
 
 #define DH_GENERATOR_2         2
@@ -148,41 +154,50 @@ struct dh_st
                (unsigned char *)(x))
 #endif
 
-DH_METHOD *DH_OpenSSL(void);
+const 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);
+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_size(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);
-int    DH_check(DH *dh,int *codes);
+#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_generate_key(DH *dh);
-int    DH_compute_key(unsigned char *key,BIGNUM *pub_key,DH *dh);
-DH *   d2i_DHparams(DH **a,unsigned char **pp, long length);
-int    i2d_DHparams(DH *a,unsigned char **pp);
-#ifndef NO_FP_API
-int    DHparams_print_fp(FILE *fp, DH *x);
+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 NO_BIO
-int    DHparams_print(BIO *bp, DH *x);
+#ifndef OPENSSL_NO_BIO
+int    DHparams_print(BIO *bp, const DH *x);
 #else
-int    DHparams_print(char *bp, DH *x);
+int    DHparams_print(char *bp, const DH *x);
 #endif
-void   ERR_load_DH_strings(void );
 
 /* 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. */
 
@@ -192,13 +207,13 @@ void      ERR_load_DH_strings(void );
 #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_NEW_METHOD                              105
 
 /* Reason codes. */
+#define DH_R_BAD_GENERATOR                              101
 #define DH_R_NO_PRIVATE_VALUE                           100
 
 #ifdef  __cplusplus
 }
 #endif
 #endif
-