EVP_PKEY_get_default_digest(3) OpenSSL EVP_PKEY_get_default_digest(3)NAMEEVP_PKEY_get_default_digest_nid - get default signature digest
SYNOPSIS
#include <openssl/evp.h>
int EVP_PKEY_get_default_digest_nid(EVP_PKEY *pkey, int *pnid);
DESCRIPTION
The EVP_PKEY_get_default_digest_nid() function sets pnid to the default
message digest NID for the public key signature operations associated
with key pkey.
NOTES
For all current standard OpenSSL public key algorithms SHA1 is
returned.
RETURN VALUES
The EVP_PKEY_get_default_digest_nid() function returns 1 if the message
digest is advisory (that is other digests can be used) and 2 if it is
mandatory (other digests can not be used). It returns 0 or a negative
value for failure. In particular a return value of -2 indicates the
operation is not supported by the public key algorithm.
SEE ALSOEVP_PKEY_CTX_new(3), EVP_PKEY_sign(3), EVP_PKEY_verify(3),
EVP_PKEY_verifyrecover(3),
HISTORY
This function was first added to OpenSSL 1.0.0.
1.0.0j 2009-09-30 EVP_PKEY_get_default_digest(3)