FIDO_CRED_EXCLUDE(3) BSD Library Functions Manual FIDO_CRED_EXCLUDE(3)
NAME
fido_cred_exclude — appends a credential ID to a credential's list of ex-
cluded credentials
SYNOPSIS
#include <fido.h>
int
fido_cred_exclude(fido_cred_t *cred, const unsigned char *ptr,
size_t len);
DESCRIPTION
The fido_cred_exclude() function adds ptr to the list of credentials ex-
cluded by cred, where ptr points to a credential ID of len bytes. A copy
of ptr is made, and no references to the passed pointer are kept. If
fido_cred_exclude() fails, the existing list of excluded credentials is
preserved.
If fido_cred_exclude returns success and cred is later passed to
fido_dev_make_cred(3) on a device that contains the credential denoted by
ptr, then fido_dev_make_cred(3) will fail.
For the format of a FIDO2 credential ID, please refer to the Web Authen-
tication (webauthn) standard.
RETURN VALUES
The error codes returned by fido_cred_exclude() are defined in
<fido/err.h>. On success, FIDO_OK is returned.
SEE ALSO
fido_cred_new(3), fido_cred_set_authdata(3), fido_dev_make_cred(3)
BSD May 23, 2018 BSD
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