Red Hat CERTIFICATE SYSTEM 7.1 - ADMINISTRATOR Administrator's Manual page 735

Table G-1 lists the uses defined by PKIX for this extension, and Table G-2 lists uses
privately defined by Red Hat.
Table G-1 PKIX Extended Key Usage Extension Uses
Use
Server authentication
Client authentication
Code signing
Email
Timestamping
OCSP Signing
* OCSP Signing is not defined in PKIX Part 1, but in RFC 2560, "X.509 Internet Public
Key Infrastructure Online Certificate Status Protocol - OCSP."
Table G-2 Private Extended Key Usage Extension Uses
Use
Certificate trust list signing
Microsoft Server Gated
Crypto (SGC)
Microsoft Encrypted File
System
Red Hat
SGC
CS Version Support
Supported since CS 4.2. Refer to "ExtendedKeyUsageExt" on page 503.
issuerAltName
OID
2.5.29.18
OID
1.3.6.1.5.5.7.3.1
1.3.6.1.5.5.7.3.2
1.3.6.1.5.5.7.3.3
1.3.6.1.5.5.7.3.4
1.3.6.1.5.5.7.3.8
1.3.6.1.5.5.7.3.9*
OID
1.3.6.1.4.1.311.10.3.1
1.3.6.1.4.1.311.10.3.3
1.3.6.1.4.1.311.10.3.4
2.16.840.1.113730.4.1
Appendix G
Standard X.509 v3 Certificate Extensions
Certificate and CRL Extensions 735