Relies on bitcoin-ts for secp256k1 crypto.
Relies on jsonld-signatures for jsonld operations. Some of the javascript from that repo needed to be converted to typescript to get this module to build properly, I have retained the copyrights on source files.
| JOSE Alg | COSE Alg Value | Description | Recommended |
|---|---|---|---|
| SS256K | TBD (requested assignment -48) | Schnorr signature using secp256k1 curve and SHA-256 | Yes |
JSON-LD 1.1 is being formally specified in the W3C JSON-LD Working Group. To participate in this work, please join the W3C and then join the Working Group.
Per ld-signatures, this Signature Suite defines the following:
{
"id": "https://identity.foundation/SchnorrSecp256k1Signature2019#SchnorrSecp256k1Signature2019",
"type": "SignatureSuite",
"canonicalizationAlgorithm": "https://w3id.org/security#URDNA2015",
"digestAlgorithm": "https://www.ietf.org/assignments/jwa-parameters#SHA256",
"signatureAlgorithm": "https://tools.ietf.org/html/rfc7515"
}This suite uses detached JWS using alg "SS256K" an unregistered, experimental Schnorr over secp256k1. Please review the details below.
SS256K is just ES256K but uses Schnorr instead of ECDSA.
The detached JWS must have the following header:
{
"alg": "SS256K",
"b64": false,
"crit": ["b64"]
}This is what a proof with SchnorrSecp256k1Signature2019 looks like:
{
"type": "SchnorrSecp256k1Signature2019",
"created": "2020-04-11T21:07:06Z",
"verificationMethod": "did:example:123#vm-3",
"proofPurpose": "assertionMethod",
"jws": "eyJhbGciOiJFUzI1NkstUiIsImI2NCI6ZmFsc2UsImNyaXQiOlsiYjY0Il19..pp9eiLCMfN4EfSB3cbl3UxJ4TtgUaTfByDaaB6IZbXsnvIy5AUIFjbgaiFNtq9-3f8mP7foD_HXpjrdWZfzlwAE"
}This project was bootstrapped with TSDX.
Below is a list of commands you will probably find useful.
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