发明名称 |
Method and system for secure storage, transmission and control of cryptographic keys |
摘要 |
A system and method are described supporting secure implementations of 3DES and other strong cryptographic algorithms. A secure key block having control, key, and MAC fields safely stores or transmits keys in insecure or hostile environments. The control field provides attribute information such as the manner of using a key, the algorithm to be implemented, the mode of use, and the exportability of the key. A MAC algorithm is applied across the key and control for generating a MAC field that cryptographically ties the control and key fields together. Improved security is provided because tampering with any portion of the key block results in an invalid key block. The work factor associated with any manner of attack is sufficient to maintain a high level of security consistent with the large keys and strong cryptographic algorithms supported.
|
申请公布号 |
US2004003246(A1) |
申请公布日期 |
2004.01.01 |
申请号 |
US20020187266 |
申请日期 |
2002.06.28 |
申请人 |
COMPAQ INFORMATION TECHNOLOGIES GROUP, L.P. |
发明人 |
HOPKINS DALE W.;LANGFORD SUSAN;HINES LARRY;CHEN CHING-HSUAN |
分类号 |
H04L9/32;(IPC1-7):H04L9/00 |
主分类号 |
H04L9/32 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|