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D2I_DHPARAMS(3) Library Functions Manual D2I_DHPARAMS(3)

d2i_DHparams, i2d_DHparamsPKCS#3 DH parameter functions

#include <openssl/dh.h>

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

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

These functions decode and encode PKCS#3 DH parameters using the DHparameter structure described in PKCS#3. They otherwise behave in a way similar to d2i_X509(3) and i2d_X509(3).

d2i_DHparams() returns a DH object or NULL if an error occurs.

i2d_DHparams() returns the number of bytes successfully encoded or a value <= 0 if an error occurs.

d2i_X509(3), DH_new(3)

d2i_DHparams() and i2d_DHparams() first appeared in SSLeay 0.5.1 and have been available since OpenBSD 2.4.

March 27, 2018 OpenBSD-6.7