Constify DH-related code.

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

diff --git a/crypto/dh/dh.h b/crypto/dh/dh.h
index 19bd570309eda8a602dde36fcb9bdc32d2586773..7e732e1c321f95e3a3ca3d8a1378d7dc72da22fa 100644 (file)
--- a/crypto/dh/dh.h
+++ b/crypto/dh/dh.h
@@ -63,6 +63,9 @@
 #error DH is disabled.
 #endif
 
+#ifndef NO_BIO
+#include <openssl/bio.h>
+#endif
 #include <openssl/bn.h>
 #include <openssl/crypto.h>
        
@@ -78,9 +81,9 @@ 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);
@@ -112,7 +115,11 @@ struct dh_st
 
        int references;
        CRYPTO_EX_DATA ex_data;
+#if 0
        DH_METHOD *meth;
+#else
+       struct engine_st *engine;
+#endif
        };
 
 #define DH_GENERATOR_2         2
@@ -145,36 +152,41 @@ 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_openssl_method(const DH_METHOD *meth);
+const DH_METHOD *DH_get_default_openssl_method(void);
+#if 0
+const DH_METHOD *DH_set_method(DH *dh, const DH_METHOD *meth);
+DH *DH_new_method(const DH_METHOD *meth);
+#else
+int DH_set_method(DH *dh, struct engine_st *engine);
+DH *DH_new_method(struct engine_st *engine);
+#endif
 
 DH *   DH_new(void);
 void   DH_free(DH *dh);
-int    DH_size(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);
 DH *   DH_generate_parameters(int prime_len,int generator,
                void (*callback)(int,int,void *),void *cb_arg);
-int    DH_check(DH *dh,int *codes);
+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);
+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 NO_FP_API
-int    DHparams_print_fp(FILE *fp, DH *x);
+int    DHparams_print_fp(FILE *fp, const DH *x);
 #endif
-#ifdef HEADER_BIO_H
-int    DHparams_print(BIO *bp, DH *x);
+#ifndef 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 );
+void   ERR_load_DH_strings(void);
 
 /* BEGIN ERROR CODES */
 /* The following lines are auto generated by the script mkerr.pl. Any changes