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DSA_dup_DH(3)


NAME

  DSA_dup_DH - Create a DH structure out of DSA structure


SYNOPSIS

  #include <openssl/dsa.h>

  DH * DSA_dup_DH(
	  DSA *r );


DESCRIPTION

  The DSA_dup_DH() function duplicates DSA parameters/keys as DH
  parameters/keys. The q is lost during that conversion, but the resulting DH
  parameters contain its length.


NOTES

  Be careful to avoid small subgroup attacks when using this.


RETURN VALUE

  The DSA_dup_DH() function returns the new DH structure, and NULL on error.
  The error codes can be obtained from ERR_get_error().


HISTORY

  The DSA_dup_DH() function was added in OpenSSL 0.9.4.


SEE ALSO

  Functions: dh(3), dsa(3), err(3)

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