It is fully anticipated that escrowed encryption will be extended to other forms of electronic communications. In mid-April NSA awarded Group Technology Corporation a contract for 22000 to 75000 Tessera cards. By retaining the user's keys on the card, the card protects the keys from compromise should the computer in use be penetrated. FIPS 185, the Federal publication defining EES, does not contain enough information to design or implement EES devices. Specifications must be obtained from the NSA, and the agency's approval is required for the manufacture of Clipper chips.
Many concerns remain.
In the next chapter, we examine the remaining issues. 2 Private communication with Miles Smid, June 3, 1994. The practical implications of Blaze's findings are subject to debate. A system by which the device private keys are kept in a repository. A key established by the participants and used for a single communication.