Signed certificate timestamp (SCT)
ID sctcrypto
DatatypeNot PIIidentifier
Signed certificate timestamp (SCT) of Certificate Transparency (RFC 6962): a log's signed promise to add a certificate to its public Merkle tree within the maximum merge delay. SCTs are embedded in certificates, sent in a TLS extension or stapled to OCSP responses. In data an SCT is usually the Base64 encoding of its binary form. A version 1 SCT starts with a zero byte, so its Base64 starts with A; the regexp also requires the length of a 32-byte log ID, a timestamp and a signature.
- Categories
- Cryptographic identifiers
- Countries
- Global (not tied to a country)
- Languages
- Common to most languages
- Quality
- 68/100 · missing: second example, mapping (Wikidata, Schema.org, ...), translation, detector coverage
- Metacrafter rules
- no detection rule yet
- Supported by tools
- no tool record lists this type yet
Regular expression
^A[A-P][A-Za-z0-9+/]{140,}={0,2}$Python re syntax.
Examples
| Value | Description |
|---|---|
| AETCvQzpFA5kpclKAZMKWqG7NZcOAO4RFoloKhxE17VmAAABoSW/+T4AAAQDAEYwRAIgTeyg6KAfX/46fQ8nvPsns52uWMnjMgcQ5c+pvT4tFBYCIBW4NkWlBKOjfM4SDzLUgf6mSlY1x1HmffO6b1VemlKD | SCT embedded in the certificate of www.rfc-editor.org (October 2026) |
| SGVsbG8sIHdvcmxkIQ== invalid | Base64 of the text 'Hello, world!', not an SCT |
Sources
- doc: https://www.rfc-editor.org/rfc/rfc6962#section-3.2
- wikipedia: https://en.wikipedia.org/wiki/Certificate_Transparency
Use this record
- Page URL:
http://registry.apicrafter.io/datatype/sctcrypto - JSON: API v1 · legacy shape (used by metacrafter) · Markdown (for LLMs)
- Improve it: edit
data/datatypes/any/cryptography/sctcrypto.yamlon GitHub