发明名称 |
DIGITAL AUTHENTICATION OVER ACOUSTIC CHANNEL |
摘要 |
Apparatus and method are disclosed for digital authentication and verification. In one embodiment, authentication involves storing a cryptographic key and a look up table (LUT), generating an access code using the cryptographic key; generating multiple parallel BPSK symbols based upon the access code; converting the BPSK symbols into multiple tones encoded wit h the access code using the LUT; and outputting the multiple tones encoded wit h the access code for authentication. In another embodiment, verification involves receiving multiple tones encoded with an access code; generating multiple parallel BPSK symbols from the multiple tones; converting the BPSK symbols into an encoded interleaved bit stream of the access code; de- interleaving the encoded interleaved bit stream; and recovering the access code from the encoded de-interleaved bit stream.
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申请公布号 |
CA2532812(A1) |
申请公布日期 |
2005.02.10 |
申请号 |
CA20042532812 |
申请日期 |
2004.07.21 |
申请人 |
QUALCOMM INCORPORATED |
发明人 |
NOERENBERG, JOHN W., II;ROSE, GREGORY G.;JALALI, AHMAD;GANTMAN, ALEXANDER;STEENSTRA, JACK |
分类号 |
H04L9/32;G06K;G07F7/10;H04L9/28;H04L27/18 |
主分类号 |
H04L9/32 |
代理机构 |
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