February 12, 2002
Practical Aspects of Modern Cryptography
30
Some common extensions
nKey Usage
ndigitalSignature
n“Sign things that don’t look like certs”
nkeyEncipherment
nExchange encrypted session keys
nkeyAgreement
nDiffie-Hellman
nkeyCertSign/keyCRLSign
n“Sign things that look like certs”
nnonRepidiation
n