NAME

       fido_assert_allow_cred, fido_assert_empty_allow_list — manage allow lists in a FIDO2 assertion

SYNOPSIS

       #include <fido.h>

       int
       fido_assert_allow_cred(fido_assert_t *assert, const unsigned char *ptr, size_t len);

       int
       fido_assert_empty_allow_list(fido_assert_t *assert);

DESCRIPTION

       The  fido_assert_allow_cred()  function  adds ptr to the list of credentials allowed in assert, 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_assert_allow_cred() fails, the existing list of allowed credentials is preserved.

       For the format of a FIDO2 credential ID, please refer to the Web Authentication (webauthn) standard.

       The fido_assert_empty_allow_list() function empties the list of credentials allowed in assert.

RETURN VALUES

       The  error  codes  returned by fido_assert_allow_cred() and fido_assert_empty_allow_list() are defined in
       <fido/err.h>.  On success, FIDO_OK is returned.

SEE ALSO

       fido_assert_new(3), fido_assert_set_authdata(3), fido_dev_get_assert(3)

Debian                                          December 1, 2022                       FIDO_ASSERT_ALLOW_CRED(3)