We are implementing the final version of RFC9421 (HTTP Signatures) in Mastodon, and would like to test this with other ActivityPub implementations.
Do you know of any AP implementations supporting both incoming (verification) and outgoing (signing) RFC9421 signatures, and if possible with support for the double-knocking mechanism as described in https://swicg.github.io/activitypub-http-signature/ (section 3.5)?
#activitypub
Renaud Chaput /
npub1qw…hwsmk
2025-05-05 13:46:51
Author Public Key
npub1qwpfjy8caugpj782cv45tmx2gdjn47jky6m0mkpruy3zr4llu4jsahwsmkSeen on
wss://relay.mostr.pubPublished at
2025-05-05 13:46:51Event JSON
{
"id": "974a6f7d2f3dacad15c962f64f3b11701b28341e3b9ef15d8438e7fca6bd984e",
"pubkey": "03829910f8ef101978eac32b45ecca43653afa5626b6fdd823e12221d7ffe565",
"created_at": 1746452811,
"kind": 1,
"tags": [
[
"t",
"activitypub"
],
[
"proxy",
"https://oisaur.com/users/renchap/statuses/114455531480422517",
"activitypub"
],
[
"client",
"Mostr",
"31990:6be38f8c63df7dbf84db7ec4a6e6fbbd8d19dca3b980efad18585c46f04b26f9:mostr",
"wss://relay.mostr.pub"
]
],
"content": "We are implementing the final version of RFC9421 (HTTP Signatures) in Mastodon, and would like to test this with other ActivityPub implementations.\n\nDo you know of any AP implementations supporting both incoming (verification) and outgoing (signing) RFC9421 signatures, and if possible with support for the double-knocking mechanism as described in https://swicg.github.io/activitypub-http-signature/ (section 3.5)?\n\n#activitypub",
"sig": "a56d608a5f658395cae5935fc2ad538c049a9f3917f2d8e554083722e1cb1ae1f6c6be3689e494651a067a5ce33037dd646ee168c0bc795f7fd321fe56bb6230"
}