Visual FoxPro
Visual FoxPro
Swift Alliance LAU XML Signature
See more XML Digital Signatures Examples
Calculating the LAU for Swift Alliance File Act XML using HMAC SHA256. (The XML signature, also referred to as Local Authentication (LAU), is computed using the algorithm HMAC based on SHA-256.)Chilkat Visual FoxPro Downloads
LOCAL lnSuccess
LOCAL loSbXml
LOCAL lnNumReplaced
LOCAL loGen
lnSuccess = 0
* This example assumes the Chilkat API to have been previously unlocked.
* See Global Unlock Sample for sample code.
* We begin with the following XML:
* <?xml version="1.0" encoding="UTF-8"?>
* <Saa:DataPDU xmlns:Saa="urn:swift:saa:xsd:saa.2.0" xmlns:Sw="urn:swift:snl:ns.Sw" xmlns:SwInt="urn:swift:snl:ns.SwInt" xmlns:SwGbl="urn:swift:snl:ns.SwGbl" xmlns:SwSec="urn:swift:snl:ns.SwSec">
* <Saa:Revision>2.0.6</Saa:Revision>
* <Saa:Header>
* <Saa:Message>
* <Saa:SenderReference>Ref760FA1234</Saa:SenderReference>
* <Saa:MessageIdentifier>tsrv.fin.mt7xx.gteesstandbys</Saa:MessageIdentifier>
* <Saa:Format>File</Saa:Format>
* <Saa:SubFormat>Input</Saa:SubFormat>
* <Saa:Sender>
* <Saa:DN>cn=su8,o=ptsqgbbb,o=swift</Saa:DN>
* <Saa:FullName>
* <Saa:X1>PTSQGBBBXXX</Saa:X1>
* </Saa:FullName>
* </Saa:Sender>
* <Saa:Receiver>
* <Saa:DN>cn=abc,ou=saa,o=xxx,o=swift</Saa:DN>
* <Saa:FullName>
* <Saa:X1>PTSXXXXXXXX</Saa:X1>
* <Saa:X2>saa</Saa:X2>
* </Saa:FullName>
* </Saa:Receiver>
* <Saa:InterfaceInfo>
* <Saa:UserReference>CRE...</Saa:UserReference>
* <Saa:MessageCreator>ApplicationInterface</Saa:MessageCreator>
* <Saa:MessageContext>Original</Saa:MessageContext>
* <Saa:MessageNature>Financial</Saa:MessageNature>
* </Saa:InterfaceInfo>
* <Saa:NetworkInfo>
* <Saa:Priority>Normal</Saa:Priority>
* <Saa:IsPossibleDuplicate>true</Saa:IsPossibleDuplicate>
* <Saa:Service>swift.corp.fast!x</Saa:Service>
* <Saa:Network>Application</Saa:Network>
* <Saa:SessionNr>0080</Saa:SessionNr>
* <Saa:SeqNr>000001</Saa:SeqNr>
* <Saa:SWIFTNetNetworkInfo>
* <Saa:RequestType>tsrv.fin.mt7xx.gteesstandbys</Saa:RequestType>
* <Saa:Reference>2f949999-d32e-49eb-9999-9a819b9b9c0d</Saa:Reference>
* <Saa:FileInfo>SwCompression=Zip</Saa:FileInfo>
* </Saa:SWIFTNetNetworkInfo>
* </Saa:NetworkInfo>
* <Saa:SecurityInfo>
* <Saa:SWIFTNetSecurityInfo>
* <Saa:FileDigestAlgorithm>SHA-256</Saa:FileDigestAlgorithm>
* <Saa:FileDigestValue>9tnnjIgsowPSU+ehm8Rb0J5TvZIvhCYnySzFkpur1aw=</Saa:FileDigestValue>
* </Saa:SWIFTNetSecurityInfo>
* </Saa:SecurityInfo>
* <Saa:FileLogicalName>Payload.ZIP</Saa:FileLogicalName>
* <Saa:ExpiryDateTime>20210712074808</Saa:ExpiryDateTime>
* </Saa:Message>
* </Saa:Header>
* <Saa:Body>Payload.ZIP</Saa:Body>
* </Saa:DataPDU>
* Load the XML file to be signed.
loSbXml = CreateObject('Chilkat.StringBuilder')
lnSuccess = loSbXml.LoadFile("c:/someDir/fileToSign.xml","utf-8")
IF (lnSuccess = 0) THEN
? "Failed to load XML file."
RELEASE loSbXml
CANCEL
ENDIF
* We need to add a "LAU" XML element just before the "</Saa:DataPDU>"
lnNumReplaced = loSbXml.Replace("</Saa:DataPDU>",'<LAU xmlns="urn:swift:saa:xsd:saa.2.0"></LAU></Saa:DataPDU>')
loGen = CreateObject('Chilkat.XmlDSigGen')
loGen.SigLocation = "Saa:DataPDU|LAU"
loGen.SigLocationMod = 0
loGen.SigNamespacePrefix = "ds"
loGen.SigNamespaceUri = "http://www.w3.org/2000/09/xmldsig#"
loGen.SignedInfoCanonAlg = "EXCL_C14N"
loGen.SignedInfoDigestMethod = "sha256"
loGen.Behaviors = "CompactSignedXml"
* Sign the entire document.
loGen.AddSameDocRef("","sha256","EXCL_C14N","","")
* Set our HMAC key
loGen.SetHmacKey("Abcdef0123456789Abcdef0123456789","ascii")
* Sign the XML:
lnSuccess = loGen.CreateXmlDSigSb(loSbXml)
IF (lnSuccess = 0) THEN
? loGen.LastErrorText
RELEASE loSbXml
RELEASE loGen
CANCEL
ENDIF
* Examine the signed XML
? loSbXml.GetAsString()
* Save the signed XML to a file.
lnSuccess = loSbXml.WriteFile("c:/someDir/signedFile.xml","utf-8",0)
RELEASE loSbXml
RELEASE loGen