Time Stamping – Cryptographic Proof
of Time
uRFC
3161 – Time Stamping Protocol
§Time stamping is objective third party proof that a datum existed at a point of time
§Data + Date +
Time > Hashed > Digital Signed = Time Stamp
uBenefits
of Time Stamping
§Uses cryptography to bind data (event logs, email, etc) to the correct date and time
§Provides proof that an
objective party (trusted clock) agreed that the date and time were correct and the data existed