发明名称 |
FORMAT-PRESERVING CRYPTOGRAPHIC SYSTEMS |
摘要 |
Format-preserving encryption and decryption processes are provided. The encryption and decryption processes may use a block cipher. A string that is to be encrypted or decrypted may be converted to a unique binary value. The block cipher may operate on the binary value. If the output of the block cipher that is produced is not representative of a string that is in the same format as the original string, the block cipher may be applied again. The block cipher may be repeatedly applied in this way during format-preserving encryption operations and during format-preserving decryption operations until a format-compliant output is produced. Selective access may be provided to portions of a string that have been encrypted using format-preserving encryption.
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申请公布号 |
US2010111297(A1) |
申请公布日期 |
2010.05.06 |
申请号 |
US20090432258 |
申请日期 |
2009.04.29 |
申请人 |
PAUKER MATTHEW J;SPIES TERENCE |
发明人 |
PAUKER MATTHEW J.;SPIES TERENCE |
分类号 |
H04L9/18 |
主分类号 |
H04L9/18 |
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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