Blacker (styled BLACKER) is a U.S. Department of Defense computer network security project designed to achieve A1 class ratings of the Trusted Computer System Evaluation Criteria (TCSEC). The project was implemented by SDC and Burroughs. It was the first secure system with trusted end-to-end encryption on the United States' Defense Data Network.
- RED/BLACK concept for segregation of sensitive plaintext information (RED signals) from encrypted ciphertext (BLACK signals)
- Weissman, Clark (1992). "BLACKER: security for the DDN examples of A1 security engineering trades". Proceedings 1992 IEEE Computer Society Symposium on Research in Security and Privacy. pp. 286–292. doi:10.1109/RISP.1992.213253. ISBN 0-8186-2825-1.
- Weissman, Clark (1995-01-24). "Handbook for the Computer Security Certification of Trusted Systems". Archived from the original on 2012-12-12. Retrieved 2007-12-02.
- Pike, John (2000-02-11). "BLACKER, an article at the Intelligence Resource Program". Retrieved 2007-12-02.
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