krb5_get_wrapped_length
outer_len = krb5_get_wrapped_length (context, crypto, len + 4);
outer_len = krb5_get_wrapped_length (context, crypto, len);
sz = krb5_get_wrapped_length(context,
*output_length += krb5_get_wrapped_length(context,
krb5_get_wrapped_length (
*length = krb5_get_wrapped_length(context, crypto, inputlen);
wrapped_size = krb5_get_wrapped_length(context, crypto, size);