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).

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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 <C_CkRsa.h>

void ChilkatSample(void)
    {
    HCkRsa rsa;
    BOOL success;
    const char * xmlKey;
    BOOL bUsePrivateKey;
    const char * encryptedText;
    const char * decryptedText;

    rsa = CkRsa_Create();

    success = CkRsa_UnlockComponent(rsa,"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.

    xmlKey = CkRsa_snkToXml(rsa,"chilkat2.snk");

    printf("%s\n",xmlKey);

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

    bUsePrivateKey = TRUE;

    encryptedText = CkRsa_encryptStringENC(rsa,"Hello World!",bUsePrivateKey);

    printf("%s\n",encryptedText);

    //  Now decrypt with the public key:
    CkRsa_ImportPublicKey(rsa,xmlKey);
    bUsePrivateKey = FALSE;

    decryptedText = CkRsa_decryptStringENC(rsa,encryptedText,bUsePrivateKey);

    printf("%s\n",decryptedText);

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


    CkRsa_Dispose(rsa);

    }