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(Xojo Plugin) Sign Manifest File to Generate a Passbook .pkpass file

Demonstrates how to create a Passbook .pkpass archive by creating a signature of a manifest file and then zipping to a .pkpass archive.

Chilkat Xojo Plugin Download

Xojo Plugin for Windows, Linux, Mac OS X, and ARM, ARM64

// Note: Requires Chilkat v9.5.0.75 or greater.

// This requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// ---------------------------------------------------------------------------------------------
// Note: Chilkat also has the capability to do everything in-memory (no files would be involved).  
// See this example:  Sign Manifest File to Generate a Passbook .pkpass in Memory
// ---------------------------------------------------------------------------------------------

// First create the manifest.json
Dim success As Boolean
Dim manifest As New Chilkat.JsonObject
Dim crypt As New Chilkat.Crypt2

Dim zip As New Chilkat.Zip
success = zip.NewZip("qa_data/p7s/pass-wallet/example.pkpass")
// Set the AppendFromDir property to prevent that relative paths from being stored in the .pkpass archive.
zip.AppendFromDir = "qa_data/p7s/pass-wallet/"

crypt.HashAlgorithm = "sha1"
// Return hashes as lowercase hex.
crypt.EncodingMode = "hexlower"

Dim fileHash As String
Dim filePath As String
filePath = "qa_data/p7s/pass-wallet/icon.png"
fileHash = crypt.HashFileENC(filePath)
success = zip.AppendOneFileOrDir("icon.png",False)
success = manifest.UpdateString("""icon.png""",fileHash)

filePath = "qa_data/p7s/pass-wallet/icon@2x.png"
fileHash = crypt.HashFileENC(filePath)
success = zip.AppendOneFileOrDir("icon@2x.png",False)
success = manifest.UpdateString("""icon@2x.png""",fileHash)

filePath = "qa_data/p7s/pass-wallet/logo.png"
fileHash = crypt.HashFileENC(filePath)
success = zip.AppendOneFileOrDir("logo.png",False)
success = manifest.UpdateString("""logo.png""",fileHash)

filePath = "qa_data/p7s/pass-wallet/logo@2x.png"
fileHash = crypt.HashFileENC(filePath)
success = zip.AppendOneFileOrDir("logo@2x.png",False)
success = manifest.UpdateString("""logo@2x.png""",fileHash)

filePath = "qa_data/p7s/pass-wallet/pass.json"
fileHash = crypt.HashFileENC(filePath)
success = zip.AppendOneFileOrDir("pass.json",False)
success = manifest.UpdateString("""pass.json""",fileHash)

Dim sbJson As New Chilkat.StringBuilder
success = manifest.EmitSb(sbJson)
Dim manifestPath As String
manifestPath = "qa_data/p7s/pass-wallet/manifest.json"
success = sbJson.WriteFile(manifestPath,"utf-8",False)
success = zip.AppendOneFileOrDir("manifest.json",False)

// Make sure we have the Apple WWDR intermediate certificate available for 
// the cert chain in the signature.
Dim certVault As New Chilkat.XmlCertVault
Dim appleWwdrCert As New Chilkat.Cert
success = appleWwdrCert.LoadByCommonName("Apple Worldwide Developer Relations Certification Authority")
If (success <> True) Then
    System.DebugLog("The Apple WWDR intermediate certificate is not installed.")
    System.DebugLog("It is available at https://developer.apple.com/certificationauthority/AppleWWDRCA.cer")
    System.DebugLog("You may alternatively load the .cer like this...")
    success = appleWwdrCert.LoadFromFile("qa_data/certs/AppleWWDRCA.cer")
    If (success <> True) Then
        System.DebugLog(appleWwdrCert.LastErrorText)
        Return
    End If

End If

success = certVault.AddCert(appleWwdrCert)
success = crypt.UseCertVault(certVault)

// Use a digital certificate and private key from a PFX file (.pfx or .p12).
Dim pfxPath As String
pfxPath = "qa_data/pfx/cert_test123.pfx"
Dim pfxPassword As String
pfxPassword = "test123"

Dim cert As New Chilkat.Cert
success = cert.LoadPfxFile(pfxPath,pfxPassword)
If (success <> True) Then
    System.DebugLog(cert.LastErrorText)
    Return
End If

// Provide the signing cert (with associated private key).
success = crypt.SetSigningCert(cert)
If (success <> True) Then
    System.DebugLog(crypt.LastErrorText)
    Return
End If

// Specify the signed attributes to be included.
// (These attributes appear to not be necessary, but we're including
// them just in case they become necessary in the future.)
Dim jsonSignedAttrs As New Chilkat.JsonObject
success = jsonSignedAttrs.UpdateInt("contentType",1)
success = jsonSignedAttrs.UpdateInt("signingTime",1)
crypt.SigningAttributes = jsonSignedAttrs.Emit()

// Sign the manifest JSON file to produce a file named "signature".
Dim sigPath As String
sigPath = "qa_data/p7s/pass-wallet/signature"

// Create the "signature" file.
success = crypt.CreateP7S(manifestPath,sigPath)
If (success = False) Then
    System.DebugLog(crypt.LastErrorText)
    Return
End If

success = zip.AppendOneFileOrDir("signature",False)

// ---------------------------------------------------------------------------------------------
// Note: Chilkat also has the capability to do everything in-memory (no files would be involved).  
// If this is of interest, please send email to support@chilkatsoft.com
// ---------------------------------------------------------------------------------------------

// Create the .pkipass archive (which is a .zip archive containing the required files).
success = zip.WriteZipAndClose()
If (success <> True) Then
    System.DebugLog(zip.LastErrorText)
    Return
End If

System.DebugLog("Success.")

 

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