Encryption and Decryption

To ensure secure data transmission, all interface request parameters on this platform must undergo RSA encryption before transmission. Please follow the specifications below for encryption processing:

Public and Private Key Retrieval

Obtain RSA public/private keys through the [Merchant Management System].

Encryption Requirements

Algorithm: RSA/PKCS1Padding

Target: JSON string composed of all request parameters

Encoding: Base64 encoding of the encrypted binary data

Transmission: Encrypted result transmitted via the encryptedData field

Example

Original parameters:

{"userId": "12345", "amount": 100.00}

After encryption:

{
  "encryptedData": "BQDDdGq... (Base64 string)",
  "merchantNo": "abc123"
}