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(DataFlex) Create PKCS1 RSA Signature with PEM Private KeySee more RSA ExamplesDemonstrates how to load a private key from a PEM file and create a PKCS1 RSA digital signature.Note: This example requires Chilkat v11.0.0 or greater.
Use ChilkatAx-win32.pkg Procedure Test Boolean iSuccess Variant vPkey Handle hoPkey Handle hoRsa String sStrData String sHexSig String sTemp1 Move False To iSuccess // 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 "pvkey2_rsa.pem" To iSuccess If (iSuccess = False) Begin Get ComLastErrorText Of hoPkey To sTemp1 Showln sTemp1 Procedure_Return End Get Create (RefClass(cComChilkatRsa)) To hoRsa If (Not(IsComObjectCreated(hoRsa))) Begin Send CreateComObject of hoRsa End // Import the private key into the RSA object: Get pvComObject of hoPkey to vPkey Get ComUsePrivateKey Of hoRsa vPkey To iSuccess If (iSuccess = False) Begin Get ComLastErrorText Of hoRsa To sTemp1 Showln sTemp1 Procedure_Return End // Get the signature as hex. Set ComEncodingMode Of hoRsa To "hex" Move "This is the string to be signed." To sStrData // Sign the string using the sha-1 hash algorithm. // Other valid choices are "md2", "md5", "sha256", // "sha384", and "sha512". Get ComSignStringENC Of hoRsa sStrData "sha-1" To sHexSig Showln sHexSig Showln "Success!" End_Procedure |
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