| Code Value | Definition |
|---|---|
| May Encrypt | Recipients MAY encrypt the information received when it is retransmitted or redistributed. Software implementations MAY ensure that any information retransmitted is encrypted during transit to an adequate level of encryption, as defined in the protocol that uses IEP. |
| Must Encrypt | Recipients MUST encrypt the information received when it is retransmitted or redistributed. Software implementations MUST ensure that any information retransmitted is encrypted during transit to an adequate level of encryption, as defined in the protocol that uses IEP. |