krb5_c_valid_cksumtype
krb5_c_valid_cksumtype (krb5_cksumtype /*ctype*/);
if (!krb5_c_valid_cksumtype(his_cksum->checksum_type))
return krb5_c_valid_cksumtype(ctype);
if (sumtype && !krb5_c_valid_cksumtype(sumtype))
if (!krb5_c_valid_cksumtype(krbsafe->checksum->checksum_type)) {