发明名称 |
CONSTRUCTION AND USES OF VARIABLE-INPUT-LENGTH TWEAKABLE CIPHERS |
摘要 |
Innovations in the construction and use of variable-input-length tweakable ciphers (“VILTCs”). In some cases, a VILTC uses an initialization vector that is protected from exposure outside an encryption/decryption system in order to provide enhanced security with efficient performance. For example, a system for encryption and/or decryption includes two fixed-input-length tweakable block ciphers (“FIL TBCs”) and a VILTC. The first FIL TBC is adapted to produce a fixed-length initialization vector. The VILTC is adapted to produce a variable-length output string using the fixed-length initialization vector as a tweak. The second FIL TBC is adapted to produce a fixed-length output string. In this way, the first FIL TBC and the second FIL TBC protect the fixed-length initialization vector from exposure outside the system. In other cases, a VILTC is used for a reliable and efficient implementation of authenticated encryption/decryption with associated data. |
申请公布号 |
EP3075097(A2) |
申请公布日期 |
2016.10.05 |
申请号 |
EP20140876408 |
申请日期 |
2014.11.26 |
申请人 |
PORTLAND STATE UNIVERSITY |
发明人 |
SHRIMPTON, Thomas E.;TERASHIMA, Robert S. |
分类号 |
H04L9/06 |
主分类号 |
H04L9/06 |
代理机构 |
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地址 |
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