March 12, 2002
Practical Aspects of Modern Cryptography
61
The Clipper Chip
nUS Government attempt to “stimulate” the market for “voluntary” key escrow equipment
nContracted w/ AT&T to produce “Clipper phones” for government use
nPhones would also be available for non-government use
nEncryption keys could be accessed through the “Law Enforcement Access Field” (LEAF) in the protocol