Classic ASP
Classic ASP
Ibanity HTTP Signature for XS2A, Isabel Connect, Ponto Connect
See more Ibanity Examples
Demonstrates how to add a Signature header for Ibanity HTTP requests.Chilkat Classic ASP Downloads
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success = 0
' 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
set json = Server.CreateObject("Chilkat.JsonObject")
success = json.UpdateString("data.type","customerAccessToken")
success = json.UpdateString("data.attributes.applicationCustomerReference","15874569")
payload = json.Emit()
Response.Write "<pre>" & Server.HTMLEncode( "payload = " & payload) & "</pre>"
' Step 1: Build the (created) virtual header
set dtNow = Server.CreateObject("Chilkat.CkDateTime")
success = dtNow.SetFromCurrentSystemTime()
created = dtNow.GetAsUnixTimeStr(0)
Response.Write "<pre>" & Server.HTMLEncode( "created = " & created) & "</pre>"
' Step 2: Build the Digest header
set crypt = Server.CreateObject("Chilkat.Crypt2")
crypt.HashAlgorithm = "sha512"
crypt.EncodingMode = "base64"
crypt.Charset = "utf-8"
set sbDigestHdrValue = Server.CreateObject("Chilkat.StringBuilder")
success = sbDigestHdrValue.Append("SHA-512=")
success = sbDigestHdrValue.Append(crypt.HashStringENC(json.Emit()))
Response.Write "<pre>" & Server.HTMLEncode( sbDigestHdrValue.GetAsString()) & "</pre>"
' 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.
set sbSigningString = Server.CreateObject("Chilkat.StringBuilder")
success = sbSigningString.Append("(request-target): ")
success = sbSigningString.AppendLine(request_target,0)
success = sbSigningString.Append("host: ")
success = sbSigningString.AppendLine("api.ibanity.com",0)
success = sbSigningString.Append("digest: ")
success = sbSigningString.AppendLine(sbDigestHdrValue.GetAsString(),0)
success = sbSigningString.Append("(created): ")
success = sbSigningString.AppendLine(created,0)
success = sbSigningString.Append("ibanity-idempotency-key: ")
idempotencyKey = crypt.GenerateUuid()
success = 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.
set privKey = Server.CreateObject("Chilkat.PrivateKey")
success = privKey.LoadEncryptedPemFile("my_ibanity_signature_private_key.pem","pem_password")
If (success = 0) Then
Response.Write "<pre>" & Server.HTMLEncode( privKey.LastErrorText) & "</pre>"
Response.End
End If
set rsa = Server.CreateObject("Chilkat.Rsa")
rsa.PssSaltLen = 32
rsa.EncodingMode = "base64"
' Use the RSASSA-PSS signature algorithm
rsa.PkcsPadding = 0
success = rsa.UsePrivateKey(privKey)
If (success = 0) Then
Response.Write "<pre>" & Server.HTMLEncode( rsa.LastErrorText) & "</pre>"
Response.End
End If
' Sign the signing string.
sigBase64 = rsa.SignStringENC(sbSigningString.GetAsString(),"sha-256")
If (rsa.LastMethodSuccess = 0) Then
Response.Write "<pre>" & Server.HTMLEncode( rsa.LastErrorText) & "</pre>"
Response.End
End If
' Build the signature header value.
set sbSigHeaderValue = Server.CreateObject("Chilkat.StringBuilder")
success = sbSigHeaderValue.Append("keyId=""")
' Use your identifier for the application's signature certificate, obtained from the Developer Portal
success = sbSigHeaderValue.Append("62f02718-eeee-46e1-b5eb-e8fd6e799c2e")
success = sbSigHeaderValue.Append(""",created=")
success = sbSigHeaderValue.Append(created)
success = sbSigHeaderValue.Append(",algorithm=""hs2019"",headers=""")
success = sbSigHeaderValue.Append(signed_headers_list)
success = sbSigHeaderValue.Append(""",signature=""")
success = sbSigHeaderValue.Append(sigBase64)
success = sbSigHeaderValue.Append("""")
Response.Write "<pre>" & Server.HTMLEncode( sbSigHeaderValue.GetAsString()) & "</pre>"
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