February 12, 2002
Practical Aspects of Modern Cryptography
63
Extensions – Key Usage
n [3] {
n      SEQUENCE {
n        SEQUENCE {
n          OBJECT IDENTIFIER keyUsage (2 5 29 15)
n          OCTET STRING, encapsulates {
n              BIT STRING 7 unused bits
n                '1'B (bit 0)
n              }
n          }
n        SEQUENCE {
n          OBJECT IDENTIFIER subjectKeyIdentifier (2 5 29 14)
n          OCTET STRING, encapsulates {
n              OCTET STRING
n                B6 DF 93 F1 85 8B 7D EF 1D 39 6A C4 C9 A6 30 98
n                E0 69 0B A5
n              }
n          }
n        SEQUENCE {
n          OBJECT IDENTIFIER '1 3 6 1 4 1 311 20 2'
n          OCTET STRING, encapsulates {
n              BMPString 'ClientAuth'
n              }
n          }
n