EVP_PKEY_get_default_digest - get default signature digest
#include <openssl/evp.h> int EVP_PKEY_get_default_digest_nid(EVP_PKEY *pkey, int *pnid);
OpenSSL EVP_PKEY_get_default_digest(3openssl)
NAME
EVP_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.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
+---------------+--------------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+--------------------------+
|Availability | library/security/openssl |
+---------------+--------------------------+
|Stability | Pass-through uncommitted |
+---------------+--------------------------+
NOTES
For all current standard OpenSSL public key algorithms SHA1 is
returned.
Source code for open source software components in Oracle Solaris can
be found at https://www.oracle.com/downloads/opensource/solaris-source-
code-downloads.html.
This software was built from source available at
https://github.com/oracle/solaris-userland. The original community
source was downloaded from
https://www.openssl.org/source/openssl-1.0.2ze.tar.gz.
Further information about this software can be found on the open source
community website at https://www.openssl.org/.
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 ALSO
EVP_PKEY_CTX_new(3), EVP_PKEY_sign(3), EVP_PKEY_verify(3),
EVP_PKEY_verify_recover(3),
HISTORY
This function was first added to OpenSSL 1.0.0.
1.0.2ze 2022-05-03
EVP_PKEY_get_default_digest(3openssl)