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(PHP ActiveX) Ibanity HTTP Signature for XS2A, Isabel Connect, Ponto ConnectSee more Ibanity ExamplesDemonstrates how to add a Signature header for Ibanity HTTP requests. For more information, see https://documentation.ibanity.com/http-signature
<?php // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // In order to sign your HTTP requests, you have to add 2 headers to the HTTP request: Digest: the digest of the request payload and Signature: the actual signature of the request. // POST /xs2a/customer-access-tokens HTTP/1.1 // Host: api.ibanity.com // Content-Type: application/json // Digest: SHA-512=z4PhNX7vuL3xVChQ1m2AB9Yg5AULVxXcg/SpIdNs6c5H0NE8XYXysP+DGNKHfuwvY7kxvUdBeoGlODJ6+SfaPg== // Ibanity-Idempotency-Key: 61f02718-eeee-46e1-b5eb-e8fd6e799c2d // Signature: keyId="62f02718-eeee-46e1-b5eb-e8fd6e799c2e",created=1599659223,algorithm="hs2019",headers="(request-target) host digest (created) ibanity-idempotency-key",signature="SjWJWbWN7i0...zsbM=" // // {"data":{"type":"customerAccessToken", "attributes":{"applicationCustomerReference":"15874569"}}} // The payload (body) of the above HTTP request is the JSON. // Build the JSON above. // Use this online tool to generate code from sample JSON: // Generate Code to Create JSON // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.JsonObject') $json = new COM("Chilkat.JsonObject"); $json->UpdateString('data.type','customerAccessToken'); $json->UpdateString('data.attributes.applicationCustomerReference','15874569'); $payload = $json->emit(); print 'payload = ' . $payload . "\n"; // Step 1: Build the (created) virtual header // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.CkDateTime') $dtNow = new COM("Chilkat.CkDateTime"); $dtNow->SetFromCurrentSystemTime(); $created = $dtNow->getAsUnixTimeStr(0); print 'created = ' . $created . "\n"; // Step 2: Build the Digest header // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Crypt2') $crypt = new COM("Chilkat.Crypt2"); $crypt->HashAlgorithm = 'sha512'; $crypt->EncodingMode = 'base64'; $crypt->Charset = 'utf-8'; // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.StringBuilder') $sbDigestHdrValue = new COM("Chilkat.StringBuilder"); $sbDigestHdrValue->Append('SHA-512='); $sbDigestHdrValue->Append($crypt->hashStringENC($json->emit())); print $sbDigestHdrValue->getAsString() . "\n"; // Step 3: Build the (request target) virtual header // In order to build the signature you will need a virtual header named (request-target) (the parentheses are important). // The (request-target) is the string concatenation of the HTTP method (in lowercase) with the path and query parameters. $request_target = 'post /xs2a/customer-access-tokens'; // Step 4: Build the signing string // The signing string is the concatenation of the signed header names (in lowercase) and values separated by a LF. // You must always sign the following headers: (request-target), host, (created), digest. // If used, you must also sign the authorization header and any ibanity-* headers, such as ibanity-idempotency-key. // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.StringBuilder') $sbSigningString = new COM("Chilkat.StringBuilder"); $sbSigningString->Append('(request-target): '); $sbSigningString->AppendLine($request_target,0); $sbSigningString->Append('host: '); $sbSigningString->AppendLine('api.ibanity.com',0); $sbSigningString->Append('digest: '); $sbSigningString->AppendLine($sbDigestHdrValue->getAsString(),0); $sbSigningString->Append('(created): '); $sbSigningString->AppendLine($created,0); $sbSigningString->Append('ibanity-idempotency-key: '); $idempotencyKey = $crypt->generateUuid(); $sbSigningString->Append($idempotencyKey); // Step 5: Build the signed headers list // To allow Ibanity to check the signed headers, you must provide a list of the header names. They should be lowercase and in the same order used to create the signing string. $signed_headers_list = '(request-target) host digest (created) ibanity-idempotency-key'; // Step 6: Build the Signature header // This is where the real signing happens. The signature header is a combination of several sub-headers - // // keyId: the identifier for the application's signature certificate, obtained from the Developer Portal // algorithm: the digital signature algorithm used to generate the signature (must be hs2019) // headers: The list of HTTP headers created in step 5 // signature: the Base64-encoded digital signature of the signing string created in step 4. // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.PrivateKey') $privKey = new COM("Chilkat.PrivateKey"); $success = $privKey->LoadEncryptedPemFile('my_ibanity_signature_private_key.pem','pem_password'); if ($success == 0) { print $privKey->LastErrorText . "\n"; exit; } // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Rsa') $rsa = new COM("Chilkat.Rsa"); $rsa->PssSaltLen = 32; $rsa->EncodingMode = 'base64'; // Use the RSASSA-PSS signature algorithm $rsa->OaepPadding = 1; $success = $rsa->ImportPrivateKeyObj($privKey); if ($success == 0) { print $rsa->LastErrorText . "\n"; exit; } // Sign the signing string. $sigBase64 = $rsa->signStringENC($sbSigningString->getAsString(),'sha-256'); if ($rsa->LastMethodSuccess == 0) { print $rsa->LastErrorText . "\n"; exit; } // Build the signature header value. // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.StringBuilder') $sbSigHeaderValue = new COM("Chilkat.StringBuilder"); $sbSigHeaderValue->Append('keyId=\''); // Use your identifier for the application's signature certificate, obtained from the Developer Portal $sbSigHeaderValue->Append('62f02718-eeee-46e1-b5eb-e8fd6e799c2e'); $sbSigHeaderValue->Append('\',created='); $sbSigHeaderValue->Append($created); $sbSigHeaderValue->Append(',algorithm=\'hs2019\',headers=\''); $sbSigHeaderValue->Append($signed_headers_list); $sbSigHeaderValue->Append('\',signature=\''); $sbSigHeaderValue->Append($sigBase64); $sbSigHeaderValue->Append('\''); print $sbSigHeaderValue->getAsString() . "\n"; ?> |
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