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. |
申请公布号 |
US2013339252(A1) |
申请公布日期 |
2013.12.19 |
申请号 |
US201213517513 |
申请日期 |
2012.06.13 |
申请人 |
PAUKER MATTHEW J.;SPIES TERENCE |
发明人 |
PAUKER MATTHEW J.;SPIES TERENCE |
分类号 |
G06Q20/40;H04L9/28 |
主分类号 |
G06Q20/40 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|