Sizes

Assuming

  • 2,000,000 current certificates
  • Average certificate lifetime of 1.33 years
  • Maximum certificate lifetime of 2 years
  • 32 byte (i.e. SHA-256) hashes
  • 70 byte (i.e. EC) signatures
Then we can calculate the sizes of log proofs and segment consistency proofs for various segment durations.

Segment length                     60         minutes
Segment length                     172 certificates
Proof length                     8         hashes
Proof length                     326 bytes
Current segments             17520
Segment consistency proof     15     hashes
Segment consistency proof     550 bytes
Segment length                     10     minutes
Segment length                     29        certificates
Proof length                     5         hashes
Proof length                     230 bytes
Current segments             105120
Segment consistency proof     17     hashes
Segment consistency proof     614 bytes
Segment length                      1     minutes
Segment length                     3         certificates
Proof length                     2     hashes
Proof length                     134 bytes
Current segments             1051200
Segment consistency proof     21         hashes
Segment consistency proof    742 bytes
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