(C) 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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#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;

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

    rsa = CkRsa_Create();

    // 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));
        CkRsa_Dispose(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();
    success = CkPrivateKey_LoadXml(privKey,privateKeyXml);
    success = CkPrivateKey_SavePemFile(privKey,"privateKey.pem");

    // Save the public key in PEM format:
    pubKey = CkPublicKey_Create();
    success = CkPublicKey_LoadFromString(pubKey,publicKeyXml);
    success = CkPublicKey_SavePemFile(pubKey,FALSE,"publicKey.pem");


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

    }