(MFC) RSA OAEP Padding

Demonstrates how to use OAEP padding with the RSA encryption algorithm. More information about OAEP Padding.

Chilkat C/C++ Library Downloads MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkRsa.h>

void ChilkatSample(void)
    {
    CkString strOut;

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

    CkRsa rsa;

    // RSA public key in XML format:
    const char *publicKey = "<RSAPublicKey><Modulus>of3im3mRgd2NLXIGoK6uYLg6jj0Ug2b42rnqa5Tbwz2ieFqMJqt+++x2oqLYGurlz49nt+7/785g3XYWqoka4u9c9zul6YubIjnBM72dQy7rEkEfbUxgjcxqXyjZFx+FpaxFUecLu688XEu+9UA42VKiCgcl+E7TrqnfeeYpNXc=</Modulus><Exponent>AQAB</Exponent></RSAPublicKey>";

    bool success = rsa.ImportPublicKey(publicKey);

    // To use Optimal Asymmetric Encryption Padding (OAEP) padding,
    // simply set the OaepPadding property:
    rsa.put_OaepPadding(true);

    // Encrypt a string and return the encrypted data base64-encoded:
    rsa.put_EncodingMode("base64");

    const char *plainText = "RSA Encryption should be easy.";

    bool usePrivateKey = false;
    const char *encryptedStr = rsa.encryptStringENC(plainText,usePrivateKey);
    strOut.append(encryptedStr);
    strOut.append("\r\n");


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }