NAME

gnutls_x509_crt_get_pk_algorithm - API function

SYNOPSIS

#include <gnutls/x509.h>

int gnutls_x509_crt_get_pk_algorithm(gnutls_x509_crt_t cert, unsigned int * bits);

ARGUMENTS

gnutls_x509_crt_t cert

should contain a gnutls_x509_crt_t type

unsigned int * bits

if bits is non null it will hold the size of the parameters' in bits

DESCRIPTION

This function will return the public key algorithm of an X.509 certificate.

If bits is non null, it should have enough size to hold the parameters size in bits. For RSA the bits returned is the modulus. For DSA the bits returned are of the public exponent.

Unknown/unsupported algorithms are mapped to GNUTLS_PK_UNKNOWN.

RETURNS

a member of the gnutls_pk_algorithm_t enumeration on success, or a negative error code on error.

REPORTING BUGS

Report bugs to <bugs@gnutls.org>.
Home page: https://www.gnutls.org

COPYRIGHT

Copyright © 2001-2023 Free Software Foundation, Inc., and others.
Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved.

SEE ALSO

The full documentation for gnutls is maintained as a Texinfo manual. If the /usr/local/share/doc/gnutls/ directory does not contain the HTML form visit

https://www.gnutls.org/manual/