21.   The decoding program at issue in the case is called DeCSS, because it counters the encryption system known as CSS, for content scrambling system.

22.   The new suicide mail systems use simpler but still powerful encryption systems with just one key to worry about.

23.   The report does not offer evidence of actual use of encryption systems abroad.

24.   The strength of most modern encryption systems is determined by the length of the numerical key that is used to encrypt the information.

25.   Their analysis shows the encryption system is so weak that it can be evaded in a few minutes, using no hardware more powerful than an ordinary personal computer.

26.   They knew that would mean cracking the DVD encryption system, Johansen said, but their purpose was not to make illegal copies.

27.   This has unleashed a flood of encryption systems, and the problem now is to get governments and companies to agree on a standard.

28.   ZipLip.com says it uses well-established encryption systems and employs independent auditors to test its security.

29.   Analysts believe the company is having trouble selling its encryption systems small and midsize companies.

30.   The technology was based on an encryption system developed by Israeli mathematician Adi Shamir, who has been questioned by tax investigators.