method PrivateSecp256r1.prototype.decryptChaCha20 PrivateSecp256r1.prototype.decryptChaCha20(verification_method: DIDURL,jwe: JWE,): Uint8Array Decrypt the provided JWE object using the X25519 key and the XC20P algorithm. Parameters verification_method: DIDURL jwe: JWE Return Type Uint8Array