And I imagine that India would then threaten to block their use of cryptographic communications that they were unable to intercept.

Massachusetts Institute of Technology was granted for a "Cryptographic communications system and method" that used the algorithm in 1983 .

Magnetic logic was used in the KW-26 cryptographic communications system, and in the BOGART computer.

Various attributes such as X.509v3 digital certificates for secure cryptographic communications are captured under a schema, and published in a LDAP or X.500 directory.

Family of Spies is a fact-based story of John A. Walker, Jr., a Navy Chief Warrant Officer with access to top-secret cryptographic communications.