(DataFlex) RSA Import Public Key from Certificate PEM

Uses a certificate's public key for RSA encryption. The public key from the certificate .pem file is used.

Note: This example requires Chilkat v11.0.0 or greater.

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

Use ChilkatAx-win32.pkg

Procedure Test
    Boolean iSuccess
    Handle hoCert
    Variant vPubKey
    Handle hoPubKey
    Handle hoRsa
    String sEncryptedStr
    String sTemp1

    Move False To iSuccess

    Get Create (RefClass(cComChilkatCert)) To hoCert
    If (Not(IsComObjectCreated(hoCert))) Begin
        Send CreateComObject of hoCert
    End

    Get ComLoadFromFile Of hoCert "qa_data/pem/mf_public_rsa.pem" To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoCert To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get Create (RefClass(cComChilkatPublicKey)) To hoPubKey
    If (Not(IsComObjectCreated(hoPubKey))) Begin
        Send CreateComObject of hoPubKey
    End
    Get pvComObject of hoPubKey to vPubKey
    Get ComGetPublicKey Of hoCert vPubKey To iSuccess

    Get Create (RefClass(cComChilkatRsa)) To hoRsa
    If (Not(IsComObjectCreated(hoRsa))) Begin
        Send CreateComObject of hoRsa
    End
    Get pvComObject of hoPubKey to vPubKey
    Get ComUsePublicKey Of hoRsa vPubKey To iSuccess

    Set ComEncodingMode Of hoRsa To "base64"
    Get ComEncryptStringENC Of hoRsa "hello" False To sEncryptedStr
    Showln "encrypted string = " sEncryptedStr


End_Procedure