This was created to convert CBOR Object Signing and Encryption (COSE) to JSON Web Key (JWK). I specifically needed this for WebAuthn and I'm using it with jwk-to-pem to create PEM strings that work with Node.js's Crypto library.
const coseToJwk = ;// Buffer, ArrayBuffer, Uint8Array, etc. also acceptedconst coseArray =0xA5 0x01 0x02 0x03 0x26 0x20 0x01 0x21 0x58 0x20 0xBB 0x11 0xCD 0xDD 0x6E 0x9E0x86 0x9D 0x15 0x59 0x72 0x9A 0x30 0xD8 0x9E 0xD4 0x9F 0x36 0x31 0x52 0x42 0x150x96 0x12 0x71 0xAB 0xBB 0xE2 0x8D 0x7B 0x73 0x1F 0x22 0x58 0x20 0xDB 0xD6 0x390x13 0x2E 0x2E 0xE5 0x61 0x96 0x5B 0x83 0x05 0x30 0xA6 0xA0 0x24 0xF1 0x09 0x880x88 0xF3 0x13 0x55 0x05 0x15 0x92 0x11 0x84 0xC8 0x6A 0xCA 0xC3;var jwk = ;
- This currently only supports ECDSA and RSA. GitHub pull requests or issues for other crypto suites are welcome.
- This doesn't do any other COSE things (signing, decrypting, etc.)
- This could probably use more testing (although it's not very sophisticated)