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A security system prevents a commonly shared encryption key from being deciphered by an unwelcome party, while providing easier administration of encryption keys. The security system includes a memorizer 2, an encrypter/decrypter 8, a user administrator 3, a key obtainer 4, and a key distributor 5.

A security system prevents a commonly shared encryption key from being deciphered by an unwelcome party, while providing easier administration of encryption keys. The security system includes a memorizer 2, an encrypter/decrypter 8, a user administrator 3, a key obtainer 4, and a key distributor 5. Once the chat client joins a channel, the user administrator 3 obtains and stores user information from the chat server. The user information includes a nickname list. The key obtainer 4 selects one from other user terminals to request an encryption key therefrom. Once the key obtainer 4 receives the encryption key sent by the selected user terminal, the key obtainer 4 stores the encryption key in the memorizer 2. When the user terminal receives a request for an encryption key from another user, the key distributor retrieves and sends the encryption key from the memorizer 2 of the requesting user terminal. The security system 1 should have a key updater 6, which updates an encryption key whenever a predetermined trigger occurs. Thus, the encryption key is less likely to be deciphered. Only user terminals with the key distribution and/or update properties can distribute and/or update an encryption key. The key distribution and update properties can be granted as part of the user information.

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A security system prevents a commonly shared encryption key from being deciphered by an unwelcome party, while providing easier administration of encryption keys. The security system includes a memorizer 2, an encrypter/decrypter 8, a user administrator 3, a key obtainer 4, and a key distributor 5.

A security system prevents a commonly shared encryption key from being deciphered by an unwelcome party, while providing easier administration of encryption keys. The security system includes a memorizer 2, an encrypter/decrypter 8, a user administrator 3, a key obtainer 4, and a key distributor 5. Once the chat client joins a channel, the user administrator 3 obtains and stores user information from the chat server. The user information includes a nickname list. The key obtainer 4 selects one from other user terminals to request an encryption key therefrom. Once the key obtainer 4 receives the encryption key sent by the selected user terminal, the key obtainer 4 stores the encryption key in the memorizer 2. When the user terminal receives a request for an encryption key from another user, the key distributor retrieves and sends the encryption key from the memorizer 2 of the requesting user terminal. The security system 1 should have a key updater 6, which updates an encryption key whenever a predetermined trigger occurs. Thus, the encryption key is less likely to be deciphered. Only user terminals with the key distribution and/or update properties can distribute and/or update an encryption key. The key distribution and update properties can be granted as part of the user information. e service line to provide spectral containment by restricting the frequencies of transmission passing along the line. The filter is preferably mounted within a 6-pin module used in a protector block at the Central Office or remote terminal facility, interfaces with a 5-pin module, or is placed upstream or downstream of a protector block such that it does not interfere with the operation thereof. Service is activated, and the spectral containment apparatus prevents the transmission of unexpected or unintended services over the line. plication Ser. No. 09/188,629, filed Nov. 9, 1998, now U.S. Pat. No. 6,295,531, issued Sep. 25, 2001, and entitled "COOL ICE DATA WIZARD"; U.S. patent application Ser. No. 09/189,365, filed Nov. 9, 1998, and entitled "DATA MANAGEMENT SYSTEM HAVING REMOTE TERMINAL ACCESS UTILIZING SECURITY MANAGEMENT BY TABLE PROFILING"; U.S. patent application Ser. No. 09/188,649, filed Nov. 9, 1998, now U.S. Pat. No. 6,496,821, issued Dec. 17, 2002, and entitled, "COOL ICE COLUMN PROFILING"; U.S. patent application Ser. No. 09/448,154, filed Nov. 24, 1999, and e