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[chore] Roll back use of (created) pseudo-header pending #2991 (#2992)

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tobi 2024-06-10 20:42:26 +02:00 committed by GitHub
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2 changed files with 11 additions and 7 deletions
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8
docs/federation/federating_with_gotosocial.md
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@ -42,10 +42,12 @@ ED25519
GoToSocial request signing is implemented in [internal/transport](https://github.com/superseriousbusiness/gotosocial/blob/main/internal/transport/signing.go). GoToSocial request signing is implemented in [internal/transport](https://github.com/superseriousbusiness/gotosocial/blob/main/internal/transport/signing.go).
When assembling signatures: Once https://github.com/superseriousbusiness/gotosocial/issues/2991 is resolved, GoToSocial will use the `(created)` pseudo-header instead of `date`.
- outgoing `GET` requests use `(request-target) (created) host` For now however, when assembling signatures:
- outgoing `POST` requests use `(request-target) (created) host digest`
- outgoing `GET` requests use `(request-target) host date`
- outgoing `POST` requests use `(request-target) host date digest`
GoToSocial sets the "algorithm" field in signatures to the value `hs2019`, which essentially means "derive the algorithm from metadata associated with the keyId". The *actual* algorithm used for generating signatures is `RSA_SHA256`, which is in line with other ActivityPub implementations. When validating a GoToSocial HTTP signature, remote servers can safely assume that the signature is generated using `sha256`. GoToSocial sets the "algorithm" field in signatures to the value `hs2019`, which essentially means "derive the algorithm from metadata associated with the keyId". The *actual* algorithm used for generating signatures is `RSA_SHA256`, which is in line with other ActivityPub implementations. When validating a GoToSocial HTTP signature, remote servers can safely assume that the signature is generated using `sha256`.

6
internal/transport/signing.go
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@ -25,8 +25,10 @@
// http signer preferences // http signer preferences
prefs = []httpsig.Algorithm{httpsig.RSA_SHA256} prefs = []httpsig.Algorithm{httpsig.RSA_SHA256}
digestAlgo = httpsig.DigestSha256 digestAlgo = httpsig.DigestSha256
getHeaders = []string{httpsig.RequestTarget, "(created)", "host"}
postHeaders = []string{httpsig.RequestTarget, "(created)", "host", "digest"} // TODO: Update these to use `(created)` pseudo-header instead of `Date`.
getHeaders = []string{httpsig.RequestTarget, "host", "date"}
postHeaders = []string{httpsig.RequestTarget, "host", "date", "digest"}
) )
// NewGETSigner returns a new httpsig.Signer instance initialized with GTS GET preferences. // NewGETSigner returns a new httpsig.Signer instance initialized with GTS GET preferences.