Index for Section 3

Alphabetical listing for D

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dh(3)
NAME
  dh - Diffie-Hellman key agreement

SYNOPSIS
  #include <openssl/dh.h>
  #include <openssl/engine.h>

  DH *	  DH_new(
	  void );

  void DH_free(
	  DH *dh );

  int	   DH_size(
	  DH *dh );

  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_generate_key(
	  DH *dh );

  int	   DH_compute_key(
	  unsigned char *key,
	  IGNUM *pub_key,
	  B,
	  DH *dh );

  void DH_set_default_openssl_method(
	  DH_METHOD *meth );

  DH_METHOD *DH_get_default_openssl_method(
	  void );

  int	   DH_set_method(
	  DH *dh,
	  ENGINE *engine );

  DH *DH_new_method(
	  ENGINE *engine );

  DH_METHOD *DH_OpenSSL(
	  void );

  int	   DH_get_ex_new_index(
	  long argl,
	  char *argp,
	  int (*new_func)(),
	  int (*dup_func)()),
	  void (*free_func)() );

  int	   DH_set_ex_data(
	  DH *d,
	  int idx,
	  char *arg );

  char *DH_get_ex_data(
	  DH *d,
	  int idx );

  DH * d2i_DHparams(
	  DH **a,
	  unsigned char **pp,
	  long length );

  int	   i2d_DHparams(
	  DH *a,
	  unsigned char **pp );

  int	   DHparams_print_fp(
	  FILE *fp,
	  DH *x );

  int	   DHparams_print(
	  BIO *bp,
	  DH *x );

DESCRIPTION
  These functions implement the Diffie-Hellman key agreement protocol.	The
  generation of shared DH parameters is described in
  DH_generate_parameters(3).  See DH_generate_key(3) for a description of how
  to perform a key agreement.

  The DH structure consists of several BIGNUM components:

	struct
	       {
	       BIGNUM *p;	       // prime number (shared)
	       BIGNUM *g;	       // generator of Z_p (shared)
	       BIGNUM *priv_key;       // private DH value x
	       BIGNUM *pub_key;	       // public DH value g^x
	       // ...
	       };
	DH

SEE ALSO
  Commands: dhparam(1)

  Functions: bn(3), dsa(3), err(3), rand_ssl(3), rsa(3), DH_set_method(3),
  DH_new(3), DH_get_ex_new_index(3), DH_generate_parameters(3),
  DH_compute_key(3), d2i_DHparams(3), RSA_print(3)

Index for Section 3

Alphabetical listing for D

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