Unverified50% confidenceFactExact time
Scenarios such as HMAC signatures, OAuth tokens, and S3 presigned URLs all write the expiration time into the credential itself, rather than relying on a tacit agreement between both parties about the duration.
1
Sources
50%
Confidence
Long-term
Relevance
10/12/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedStripe's signature algorithm computes an HMAC-SHA256 over the exact raw bytes received, and the server must recompute the signature over exactly the same bytes for the comparison to succeed.67% similarUnverifiedWhen an identity provider issues an Access Token, it encodes the user's roles, permissions, and organizational affiliation at the moment of issuance, and the token's content remains fixed for its validity period unless it expires or is actively revoked.63% similarUnverifiedXML signatures allow signing a subset of a document, and the verifying party must determine which part has been signed.62% similarUnverifiedIn OAuth 2.0, after a refresh token is revoked, the access tokens issued by it should theoretically also become invalid, but in practice this propagation often depends on an additional revocation list mechanism.61% similarUnverifiedA secure timestamp allows verifiers to prove that the certificate was valid at the time the signing action occurred, even if the signing certificate subsequently expires or is revoked, thereby permitting the software to continue running.60% similar
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