Crate sct

source ·
Expand description SCT verification library

This library implements verification of Signed Certificate Timestamps. These are third-party assurances that a particular certificate has been included in a Certificate Transparency log.

See RFC6962 for the details of the formats implemented here.

It is intended to be useful to libraries which perform certificate validation, OCSP libraries, and TLS libraries.


  • Describes a CT log


  • How reports errors.


  • Verifies that the SCT sct (a SignedCertificateTimestamp encoding) is a correctly signed timestamp for cert (a DER-encoded X.509 end-entity certificate) valid at_time. logs describe the CT logs trusted by the caller to sign such an SCT.