DH_new(3ssl)

DH_new3ssl

Allocate and free dh objects

Usage

 #include <openssl/dh.h>

The following functions have been deprecated since OpenSSL 3.0, and can be hidden entirely by defining OPENSSL_API_COMPAT with a suitable version value, see openssl_user_macros(7):

 DH* DH_new(void);
 void DH_free(DH *dh);

Overview

DH_new() allocates and initializes a DH structure.

DH_free() frees the DH structure and its components. The values are erased before the memory is returned to the system. If dh is NULL nothing is done.

Return values

If the allocation fails, DH_new() returns NULL and sets an error code that can be obtained by ERR_get_error(3). Otherwise it returns a pointer to the newly allocated structure.

DH_free() returns no value.

Releases

13 releases since Debian 3.0 (Woody); the text changed 12 times.

  1. 3.0
  2. 3.1
  3. 4.0
  4. 5.0
  5. 6.0
  6. 7
  7. 8
  8. 9
  9. 10
  10. 11
  11. 12
  12. 13
  13. Arch

History

All of these functions were deprecated in OpenSSL 3.0.

For replacement see EVP_PKEY-DH(7).

From openssl 3.6.5-1 in Arch Linux 2026-11-01. Parsed by carta from the page's man source.