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(DataFlex) Duplicate openssl dgst -md5 -sign myKey.pem something.txt | openssl enc -base64 -A

Demonstrates how to duplicate the creation of an RSA signature produced by this OpenSSL command:

openssl dgst -md5 -sign myKey.pem something.txt | openssl enc -base64 -A

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-9.5.0-win32.pkg

Procedure Test
    Handle hoPkey
    Boolean iSuccess
    String sPkeyXml
    Handle hoRsa
    String sStrData
    String sBase64Sig
    String sTemp1

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

    Get Create (RefClass(cComChilkatPrivateKey)) To hoPkey
    If (Not(IsComObjectCreated(hoPkey))) Begin
        Send CreateComObject of hoPkey
    End

    // Load the private key from an RSA PEM file:
    Get ComLoadPemFile Of hoPkey "myKey.pem" To iSuccess

    // Get the private key in XML format:
    Get ComGetXml Of hoPkey To sPkeyXml

    Get Create (RefClass(cComChilkatRsa)) To hoRsa
    If (Not(IsComObjectCreated(hoRsa))) Begin
        Send CreateComObject of hoRsa
    End

    // Import the private key into the RSA component:
    Get ComImportPrivateKey Of hoRsa sPkeyXml To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoRsa To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // OpenSSL uses BigEndian byte ordering:
    Set ComLittleEndian Of hoRsa To False

    // The resulting signature will be a Base64 string:
    Set ComEncodingMode Of hoRsa To "base64"

    // For simplicity, we're not loading
    // the data to be signed from a file.  We are instead simply
    // using a literal string value.  
    Move "This is the text to be signed." To sStrData

    // Hash the input using MD5, and then sign the hash:
    // Other valid hash algorithm choices are "md2" and "sha-1".
    Get ComSignStringENC Of hoRsa sStrData "md5" To sBase64Sig

    Showln sBase64Sig

    Showln "Success!"


End_Procedure

 

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