How to Form a Request Signature

All requests to API payment system need to sign. To do this, you will need a private access key, which you were given when connection к VK Pay.

To obtain the signature of the request

1. 1.

   Take the URL request without schema and domain, with the leading symbol "/", but without the final "/". For example, in the case of a request https://api.money.mail.ru/money/2-03/transaction/get/ You need to take a line to sign. /money/2-03/transaction/get .

2. 2.

   Create a JSON fields data consisting of a header header and request bodies body and encode the data into a BASE64 string.

   **Пример JSON поля data **

   JSON

   {"body":{"transaction_id":"5B5FEF96-CCFF-11EB-B2C9-F3FB221CDBE2"},"header":{"ts":1721663752,"client_id":196669}}

   Base64 encoding EXAMPLE

   eyJib2R5Ijp7InRyYW5zYWN0aW9uX2lkIjoiNUI1RkVGOTYtQ0NGRi0xMUVCLUIyQzktRjNGQjIyMUNEQkUyIn0sImhlYWRlciI6eyJ0cyI6MTcyMTY2Mzc1MiwiY2xpZW50X2lkIjoxOTY2Njl9fQ==
3. 3.

   Consistently combine the string obtained from the URL in step 1, encoded in the BASE64-line field data Step 2 and the private access key.
   The example uses the value of the access key: 928e0c62564fdb4c862e422f8ca3c49e578c7cdf .

   Example of Concatenation

   /money/2-03/transaction/geteyJib2R5Ijp7InRyYW5zYWN0aW9uX2lkIjoiNUI1RkVGOTYtQ0NGRi0xMUVCLUIyQzktRjNGQjIyMUNEQkUyIn0sImhlYWRlciI6eyJ0cyI6MTcyMTY2Mzc1MiwiY2xpZW50X2lkIjoxOTY2Njl9fQ==928e0c62564fdb4c862e422f8ca3c49e578c7cdf
4. 4.

   From the string obtained after combining, calculate the cryptographic hash SHA1 in the HEX representation. Use the received value in the parameter signature при sending a Request .

   1658b9a8c0e8c86d4e9785e44901a8d30ff59d37