krb5_dk_encrypt_length
krb5_dk_encrypt_length(enc, hash, input->length, &enclen);
krb5_dk_encrypt_length, krb5_dk_encrypt, krb5_dk_decrypt,
krb5_dk_encrypt_length, krb5_dk_encrypt, krb5_dk_decrypt,
krb5_dk_encrypt_length, krb5_dk_encrypt, krb5_dk_decrypt,
krb5_dk_encrypt_length, krb5_dk_encrypt, krb5_dk_decrypt,
krb5_dk_encrypt_length, krb5_dk_encrypt, krb5_dk_decrypt,
void krb5_dk_encrypt_length