| Feature | Specification | | :--- | :--- | | | MSP (Message Security Protocol) | | Environment | Defense Messaging System (DMS) / X.400 | | Signature Standard | DSA (Digital Signature Algorithm) | | Encryption | SKIPJACK (often via FORTEZZA card) | | Purpose | Confidentiality, Integrity, Non-repudiation |
It symbolizes the transition period when NSA moved from analog wiretapping to the encrypted digital world, laying groundwork for post-9/11 bulk collection programs (later exposed by Snowden).