nl_tokens: Unmarshal converts a point serialized by Marshal into an jwk encoded key
pl_tokens: function unmarshalPublicKey ( curve , key ) { const byteLen = curveLengths [ curve ] if ( ! key . slice ( 0 , 1 ) . equals ( Buffer . from ( [ 4 ] ) ) ) { throw new Error ( 'Invalid key format' ) } const x = <mask> BN ( key . slice ( 1 , byteLen + 1 ) ) const y = new BN ( key . slice ( 1 + byteLen ) ) return { kty : 'EC' , crv : curve , x : toBase64 ( x , byteLen ) , y : toBase64 ( y , byteLen ) , ext : true } }