vladmeh · May 17, 2023 16:24 · May 17, 2023
diff --git a/encrypt_decrypt_signature_pscb.py b/encrypt_decrypt_signature_pscb.py
@@ -0,0 +1,83 @@
+import base64
+import hashlib
+import json
+from hashlib import sha256
+
+from Crypto.Cipher import AES
+from Crypto.Util.Padding import pad, unpad
+
+
+def _base64_message(message: str) -> str:
+    message_bytes = message.encode('utf-8')
+    base64_bytes = base64.b64encode(message_bytes)
+    return base64_bytes.decode('utf-8')
+
+
+def signature(message: str, merchant_key: str) -> str:
+    return sha256((message + merchant_key).encode('utf-8')).hexdigest()
+
+
+def encrypt(plaintext: str, key: bytes) -> bytes:
+    data_bytes = bytes(plaintext, 'utf-8')
+    padded_bytes = pad(data_bytes, AES.block_size)
+
+    cipher_encrypt = AES.new(key, AES.MODE_ECB)
+
+    return cipher_encrypt.encrypt(padded_bytes)
+
+
+def decrypt(ciphered_text: bytes, key: bytes) -> str:
+    cipher_decrypt = AES.new(key, AES.MODE_ECB)
+
+    raw_bytes = cipher_decrypt.decrypt(ciphered_text)
+    deciphered_bytes = unpad(raw_bytes, AES.block_size)
+
+    return deciphered_bytes.decode('utf-8')
+
+
+if __name__ == '__main__':
+    message = {
+        "payments": [
+            {
+                "orderId": "480c505a-10d7-4122-98b0-0828c0b07659",
+                "showOrderId": "ЗаказX123",
+                "paymentId": "12345",
+                "marketPlace": "23",
+                "paymentMethod": "ac",
+                "state": "end",
+                "stateDate": "2013-11-25T18:14:44.931+03:00",
+                "amount": 1.00
+            },
+            {
+                "orderId": "5a8130df-0e19-4ff1-b331-f57c8b6c90e6",
+                "showOrderId": "ЗаказX124",
+                "paymentId": "12346",
+                "marketPlace": "23",
+                "paymentMethod": "ac",
+                "state": "end",
+                "stateDate": "2013-11-25T18:14:44.931+03:00",
+                "amount": 1.00
+            },
+            {
+                "orderId": "X125",
+                "showOrderId": "ЗаказX125",
+                "paymentId": "12346",
+                "marketPlace": "23",
+                "paymentMethod": "ac",
+                "state": "end",
+                "stateDate": "2013-11-25T18:14:44.931+03:00",
+                "amount": 1.00
+            },
+        ]
+    }
+
+    plain_text = json.dumps(message, ensure_ascii=False)
+
+    merchant_key = '111111'
+    key_md5 = hashlib.md5(merchant_key.encode())
+
+    cipher_text = encrypt(plain_text, key_md5.digest())
+    print(cipher_text)
+
+    plain_text = decrypt(cipher_text, key_md5.digest())
+    print(plain_text)