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[protocol] tie 24h recommendation to expires #137

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thibmeu merged 1 commit into from
Oct 9, 2026
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[protocol] tie 24h recommendation to expires #137

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4 changes: 1 addition & 3 deletions draft-ietf-webbotauth-httpsig-protocol.md
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Expand Up @@ -327,7 +327,7 @@ Agents MUST include the following `@signature-params` as defined in {{Section 2.
: as defined in {{Section 2.3 of HTTP-MESSAGE-SIGNATURES}}

`expires`
: as defined in {{Section 2.3 of HTTP-MESSAGE-SIGNATURES}}
: as defined in {{Section 2.3 of HTTP-MESSAGE-SIGNATURES}}. It is RECOMMENDED that `expires` be no more than 24 hours after `created`.

`keyid`
: MUST be a base64url JWK SHA-256 Thumbprint as defined in {{Section 3.2 of JWK-THUMBPRINT}} for RSA and EC, and in {{Appendix A.3 of JWK-OKP}} for ed25519.
Expand All @@ -339,8 +339,6 @@ The signing key is available to the agent at request time. Algorithms should be

The creation of the signature is defined in {{Section 3.1 of HTTP-MESSAGE-SIGNATURES}}.

It is RECOMMENDED that expiry be no more than 24 hours.

The components above bind the signature to an authority, not to a request. A
signature covering `@authority` alone verifies against any method, path, or body
sent to that authority until it expires, so anyone who observes one request can
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