FED-STD-1028, FEDERAL STANDARD: TELECOMMUNICATIONS; INTEROPERABILITY AND SECURITY REQUIREMENTS FOR USE OF THE DATA ENCRYPTION STANDARD WITH CCITT GROUP 3 FACSIMILE EQUIPMENT (04 APR 1985)

FED-STD-1028, FEDERAL STANDARD: TELECOMMUNICATIONS; INTEROPERABILITY AND SECURITY REQUIREMENTS FOR USE OF THE DATA ENCRYPTION STANDARD WITH CCITT GROUP 3 FACSIMILE EQUIPMENT (04 APR 1985)., This standard specifies interoperability and security related requirements for the use of encryption with CCITT i.e., International Telegraph and Telephone Consultative Committee) Group 3-type facsimile equipment. The algorithm used for encryption is the Data Encryption Standard (DES), described in Federal Information Processing Standards Publication 46. Requirements contained in section 3 below relate to the interoperation of DES Cryptographic Equipment, or their operation with associated CCITT Group 3 facsimile equipment. Additional security requirements, not directly relating to interoperability, are contained in Federal Standard 1027.