发明名称 |
UNIVERSAL AUTHENTICATION DEVICE FOR USE OVER TELEPHONE LINES |
摘要 |
A method is provided for securely transmitting information from a telephone to a calling party over a telephone network. In accordance with the method, encrypted audio signals are received from the telephone over a communication path to an authentication mechanism that may be located in the telephone network. The communication path is then disabled by placing the telephone is a hold state. The encrypted audio signals are decrypted to yield decrypted audio signals. The decrypted audio signals are transmitted to the calling party while the communication path is disabled. Finally, a communication path is enabled from the telephone to the calling party subsequent to transmitting the decrypted audio signals. This method provides a high degree of security since the communication path between the user and the authentication mechanism is disabled when the decrypted message is transmitted to the called party. Accordingly, if a party were to intercept the communication path between the user and the authentication mechanism (such as a listener using a receiver to intercept a wireless telephone transmission), the party could not intercept the decrypted message.
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申请公布号 |
CA2207519(A1) |
申请公布日期 |
1998.01.12 |
申请号 |
CA19972207519 |
申请日期 |
1997.06.10 |
申请人 |
AT&T CORP. |
发明人 |
WILKES, JOSEPH E.;HAZRA, AMITAVA |
分类号 |
G07F7/10;H04L9/32;H04M1/70;H04M3/16;H04M3/38;(IPC1-7):H04M1/66 |
主分类号 |
G07F7/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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