C031 Encryption Key Information
To provide information needed to identify or obtain the encryption key
Name of the key used for encryption; this name is mutually known to the security originator and the security recipient, is unique for this relationship, and is intended to allow the changing of the key from time to time Note: If any of the optional fields are present, the Key Name should contain either "PUBLIC" if a public key is being used to encrypt the one-time key or the actual name of the asymmetric key-encrypting-key used to encrypt the one-time key.
Code specifying protocol used to encrypt the session key
Additional material required for decrypting the one-time key
Hexadecimally filtered encrypted one-time key