Ethereum: binance error with php curl

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The error “signature for this request is not valid” when using the Binance Pay API via PHP CURL indicates a problem with the signature verified by the user. This problem arises due to a lack of correspondence in the way the signature was generated and verified compared to the expected format.

Understanding of Binance’s Pay Signature Pay

Binance Pay requires users to verify their signatures before authorizing any transactions on behalf of themselves or others. The verification process provides for the signature of a message using the private key, which is then encrypted with the public key of the API server to produce the signature.

Ricciolo errors Management PHP: capture of 400 errors

When you meet errors in your code, it is essential to catch and manage them correctly. In this case, we will discuss how to identify and correct the error “the signature for this request is not valid” using PHP Curl.

Identification of the problem

To make the debug of this problem, follow these steps:

  • Check your signature : Make sure to generate a signature correctly. This involves the calculation of the signature `Hmac 'according to the private key and the message to be signed.

  • Check the coding of messages : the API server is expected the message codified in the format specified by the type of message. "Check if the coded message corresponds to this requirement.

PHP curl implementation

Here is a snippet of example code that shows how to correct the error "The signature for this request is not valid:

PHP

Getbinancepayapikey () {

$ apikey = 'Your_binance_pay_api_key';

$ Signingkey = 'Your_binance_pay_signing_key';

// generates the signature using the private key and the message

$ Message = Json_encode (['User' => 'Your_username', 'Amount' => '1.0 Ether']);

$ signature = hash_hmac ('Sha256', $ Message, $ firmingkey, true);

// Check the signature using the public key of the API server

Attempt {

$ ch = curl_init ($ apikey);

Curl_setopt ($ ch, curlopt_returntransfer, True);

Curl_Setopt ($ ch, curlopt_post, true);

Curl_setopt ($ ch, curlopt_postfields, http_build_quarry (['signature' => $ signature]));

$ Response = CURL_EXEC ($ ch);

If (Curl_errno ($ ch)) {

Echo 'curl error:'. Curl_error ($ ch). "\ N";

return null;

}

$ Data = Json_decode ($ reply, True);

If ($ data ['status']! == 'success') {

Echo "was unable to check the signature with Binance Pay Api. \ n";

echo "status: {$ data ['status']}, code: {$ data ['code']}, error message: {$ data ['errmassage']} \ n";

return null;

}

} Catch (exception $ e) {

Echo 'a mistake has occurred:'. $ e-> GetMessage (). "\ N";

return null;

}

}

Getbinancepayapikey ();

In this example, we first generate a signature using the private key supplied and the message. We then check the signature using the public key of the API server by codifying the message in Json format and signing it with the private key supplied. If the verification has a positive result, the code proceeds to check if the request has been authenticated correctly.

Note

  • Make sure to replaceYour_binance_pay_api_keyYour_binance.pay.signing_key’ with the actual bees keys.

  • Make sure the public key of the API server corresponds to the format for the signature check. Consult the Binance remuneration documentation to check the required format.

By facing these problems, you should be able to solve the error “the signature for this request is not valid” when using PHP CURL to connect to the Binance Pay fipas.