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Using a .NET .snk Key File for RSA Encryption

Demonstrates how to load and use a .NET .snk key file for RSA encryption. SNK files are created by the Microsoft .NET Strong Name Tool (Sn.exe).

Downloads:

MS Windows Visual C/C++ Libraries
Linux/CentOS C/C++ Libraries
MAC OS X C/C++ Libraries
Solaris C/C++ Libraries
C++ Builder Libraries
#include <CkRsa.h>

void ChilkatSample(void)
    {
    CkRsa rsa;

    bool success;
    success = rsa.UnlockComponent("Anything for 30-day trial");
    if (success != true) {
        printf("RSA component unlock failed\n");
        return;
    }

    //  Load a public/private key pair from a .snk key file.
    const char * xmlKey;
    xmlKey = rsa.SnkToXml("chilkat2.snk");

    printf("%s\n",(const char *)xmlKey);

    //  The xmlKey contains both public and private keys.
    //  Import either the public or private for encrypting or
    //  decrypting.
    rsa.ImportPrivateKey(xmlKey);

    bool bUsePrivateKey;
    bUsePrivateKey = true;
    const char * encryptedText;
    encryptedText = rsa.EncryptStringENC("Hello World!",bUsePrivateKey);

    printf("%s\n",(const char *)encryptedText);

    //  Now decrypt with the public key:
    rsa.ImportPublicKey(xmlKey);
    bUsePrivateKey = false;
    const char * decryptedText;
    decryptedText = rsa.DecryptStringENC(encryptedText,bUsePrivateKey);

    printf("%s\n",(const char *)decryptedText);

    //  Note: We could have just as well encrypted using the public key
    //  and decrypted using the private key.

    }

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