Generate RSA Public/Private Key Pair and Export to PEM

C example code showing how to generate an RSA public/private key pair and export to PEM files.

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MS Windows Visual C/C++ Libraries

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#include <C_CkRsa.h>
#include <C_CkPrivateKey.h>
#include <C_CkPublicKey.h>

void ChilkatSample(void)
    {
    HCkRsa rsa;
    BOOL success;
    const char * publicKeyXml;
    const char * privateKeyXml;
    HCkPrivateKey privKey;
    HCkPublicKey pubKey;

    rsa = CkRsa_Create();

    success = CkRsa_UnlockComponent(rsa,"Anything for 30-day trial");
    if (success != TRUE) {
        printf("RSA component unlock failed\n");
        return;
    }

    //  Generate a 1024-bit key.  Chilkat RSA supports
    //  key sizes ranging from 512 bits to 4096 bits.
    success = CkRsa_GenerateKey(rsa,1024);
    if (success != TRUE) {
        printf("%s\n",CkRsa_lastErrorText(rsa));
        return;
    }

    //  Keys are exported in XML format:

    publicKeyXml = CkRsa_exportPublicKey(rsa);
    printf("%s\n",publicKeyXml);

    privateKeyXml = CkRsa_exportPrivateKey(rsa);
    printf("%s\n",privateKeyXml);

    //  Save the private key in PEM format:
    privKey = CkPrivateKey_Create();
    CkPrivateKey_LoadXml(privKey,privateKeyXml);
    CkPrivateKey_SaveRsaPemFile(privKey,"privateKey.pem");

    //  Save the public key in PEM format:
    pubKey = CkPublicKey_Create();
    CkPublicKey_LoadXml(pubKey,publicKeyXml);
    CkPublicKey_SaveOpenSslPemFile(pubKey,"publicKey.pem");

    CkRsa_Dispose(rsa);
    CkPrivateKey_Dispose(privKey);
    CkPublicKey_Dispose(pubKey);

    }