(DataFlex) Find a Certificate by it's SHA-1 Thumbprint

Finds a certificate by it's SHA-1 hex thumbprint. Parts of this example are specific to Windows because it searches the Windows Current User certificate store.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-win32.pkg

Procedure Test
    Handle hoCertStore
    String sThumbprint
    Boolean iBReadOnly
    Boolean iSuccess
    Variant vCert
    Handle hoCert
    Handle hoCertStorePem
    String sTemp1
    Boolean bTemp1

    Get Create (RefClass(cComChilkatCertStore)) To hoCertStore
    If (Not(IsComObjectCreated(hoCertStore))) Begin
        Send CreateComObject of hoCertStore
    End

    Move "12c1dd8015f3f03f7b1fa619dc24e2493ca8b4b2" To sThumbprint

    // This part of the example is specific to Windows because it is opening the Windows Current-User certificate store.
    Move True To iBReadOnly
    Get ComOpenCurrentUserStore Of hoCertStore iBReadOnly To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoCertStore To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // Find the certificate with the desired thumbprint
    Get ComFindCertBySha1Thumbprint Of hoCertStore sThumbprint To vCert
    If (IsComObject(vCert)) Begin
        Get Create (RefClass(cComChilkatCert)) To hoCert
        Set pvComObject Of hoCert To vCert
    End
    Get ComLastMethodSuccess Of hoCertStore To bTemp1
    If (bTemp1 <> True) Begin
        Showln "Failed to find the certificate."
        Procedure_Return
    End

    Get ComSubjectCN Of hoCert To sTemp1
    Showln "Found: " sTemp1
    Send Destroy of hoCert

    // -------------------------------------------------------------------------------------
    // Alternatively, one could load a certificate store object with certs from a PEM file,
    // and do the same thing..
    Get Create (RefClass(cComChilkatCertStore)) To hoCertStorePem
    If (Not(IsComObjectCreated(hoCertStorePem))) Begin
        Send CreateComObject of hoCertStorePem
    End

    Get ComLoadPemFile Of hoCertStorePem "pemFiles/certificates.pem" To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoCertStorePem To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get ComFindCertBySha1Thumbprint Of hoCertStorePem sThumbprint To vCert
    If (IsComObject(vCert)) Begin
        Get Create (RefClass(cComChilkatCert)) To hoCert
        Set pvComObject Of hoCert To vCert
    End
    Get ComLastMethodSuccess Of hoCertStorePem To bTemp1
    If (bTemp1 <> True) Begin
        Showln "Failed to find the certificate."
        Procedure_Return
    End

    Get ComSubjectCN Of hoCert To sTemp1
    Showln "Found: " sTemp1
    Send Destroy of hoCert


End_Procedure