public-square/jwk-multibase-key-converter-php (packagist): Enables conversion of multibase strings to/from JWK, limited to secp256k1 and P-384. Additionally, has support for did:key method spec.
Keywords: JWK|secp256k1|nist|multibase|multicodec|public-square|did key|psqr|p-384|secg|secp384r1