V2EncryptedEnvelope

V2 encrypted notification envelope.

Decrypt:

RSA-decrypt encryptedKey with OnlinePay Public Key to get AES key

AES-decrypt encryptedData with AES key to get JSON plaintext

Verify Signature:
Sort all fields by key (exclude sign, signType, skip null/empty), join as key1=value1&key2=value2

{
    "encryptedData": "string",
    "encryptedKey": "string"
}