发明名称 |
Digital radiotransceiver med kryptert nökkel-lagring |
摘要 |
A digital radio has standardized "key" storage for several different cryptosystems (DES, VGE, VGS, etc.). Cryptographic keys are stored in a table in non-volatile memory such as EEPROM. The "keys" are stored in an "encrypted" form such that their identities are not readily revealed by a "dump" of memory contents. Additional security is provided in accordance with the present invention by extracting the "keys" from the stored table and re-"encrypting" the entire table each time a key loader device is attached to the radio. Multiple key banks are used to provide enhanced voice security by increasing the number of encryption keys available for use by a radio. |
申请公布号 |
NO954232(D0) |
申请公布日期 |
1995.10.23 |
申请号 |
NO19950004232 |
申请日期 |
1995.10.23 |
申请人 |
ERICSSON INC |
发明人 |
DOIRON, TIMOTHY J.;DREON, STEVEN T.;PRIEST, MARK D. |
分类号 |
H04L9/08;H04W12/04;(IPC1-7):H04L |
主分类号 |
H04L9/08 |
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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