Communication system user authentication method
First Claim
Patent Images
1. A communication system user authentication method comprising the steps of:
- establishing a communication link through a modem between a calling party and a called party;
exchanging digital voice identification data by the calling party and the called party;
exclusive-ORing by the calling party the digital voice identification data of the calling party with the digital voice identification data of the called party to produce a first exclusive-OR;
exclusive-ORing by the called party the digital voice identification data of the called party with the digital voice identification data of the calling party to produce a second exclusive-OR;
exchanging said first exclusive-OR and said second exclusive-OR by the calling party and the called party;
determining by both the calling party and the called party whether the digital voice identification data which is received compares with the digital voice identification data which is transmitted, said determining step comprising the step of comparing said first exclusive-OR and said second exclusive-OR;
enabling by both the calling party and the called party a secure call on the communication link between the calling party and the called party, if the voice identification data which is received compares with the voice identification data which is transmitted; and
terminating by either the calling party or the called party the communication link, if the voice identification data which is received does not compare with the voice identification data which is transmitted.
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Accused Products
Abstract
The authentication method established a communication link between the calling and called users (14). The calling and called parties exchange voice identification data (22). The calling and called parties determine if the voice identification data compares (26,30). If voice identification data compares, a secure call is enabled (32). If the voice identification data does not compare the communication link is terminated (20).
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Citations
17 Claims
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1. A communication system user authentication method comprising the steps of:
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establishing a communication link through a modem between a calling party and a called party; exchanging digital voice identification data by the calling party and the called party; exclusive-ORing by the calling party the digital voice identification data of the calling party with the digital voice identification data of the called party to produce a first exclusive-OR; exclusive-ORing by the called party the digital voice identification data of the called party with the digital voice identification data of the calling party to produce a second exclusive-OR; exchanging said first exclusive-OR and said second exclusive-OR by the calling party and the called party; determining by both the calling party and the called party whether the digital voice identification data which is received compares with the digital voice identification data which is transmitted, said determining step comprising the step of comparing said first exclusive-OR and said second exclusive-OR; enabling by both the calling party and the called party a secure call on the communication link between the calling party and the called party, if the voice identification data which is received compares with the voice identification data which is transmitted; and terminating by either the calling party or the called party the communication link, if the voice identification data which is received does not compare with the voice identification data which is transmitted. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A telephone for use in a communication system, said telephone including a user authentication method comprising the steps of:
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establishing a communication link through a modem between a calling party and a called party; exchanging by the calling party and the called party a digitally compressed voice message and a checksum over the digitally compressed voice message; determining by both the calling party and the called party whether the digitally compressed voice message and the checksum over the digitally compressed voice message which is received compares with the digitally compressed voice message which is transmitted; enabling by both the calling party and the called party a secure call on the communication link between the calling party and the called party, if the digitally compressed voice message and the checksum over the digitally compressed voice message which is received compares with the digitally compressed voice message and the checksum over the digitally compressed voice message which is transmitted; and terminating by either the calling party or the called party the communication link, if the digitally compressed voice message and the checksum over the digitally compressed voice message which is received does not compare with the digitally compressed voice message and the checksum over the digitally compressed voice message which is transmitted. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification