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(C++) Generate an RSA Key and Get as Base64 DERDemonstrates how to generate a 2048-bit RSA key and return the public and private parts as unencrypted Base64 encoded DER. Note: This example requires Chilkat v11.0.0 or greater.
#include <CkRsa.h> #include <CkPrivateKey.h> #include <CkPublicKey.h> void ChilkatSample(void) { bool success = false; // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. CkRsa rsa; // Generate a 2048-bit key. CkPrivateKey privKey; success = rsa.GenKey(2048,privKey); if (success == false) { std::cout << rsa.lastErrorText() << "\r\n"; return; } // Get the public part of the key. CkPublicKey pubKey; privKey.ToPublicKey(pubKey); // There are two possible formats for representing the RSA public key // in ASN.1 (DER). The possible formats are PKCS1 and PKCS8. // We can get either by setting bChoosePkcs1 to true or false. bool bChoosePkcs1 = true; const char *pubKeyBase64Der = pubKey.getEncoded(bChoosePkcs1,"base64"); std::cout << "Public Key Base64 DER:" << "\r\n"; std::cout << pubKeyBase64Der << "\r\n"; // Get the private key as Base64 DER: // We can get PKCS1 or PKCS8, but with different methods: const char *privKeyPkcs1 = privKey.getPkcs1ENC("base64"); std::cout << "Private Key PKCS1 Base64 DER:" << "\r\n"; std::cout << privKeyPkcs1 << "\r\n"; const char *privKeyPkcs8 = privKey.getPkcs8ENC("base64"); std::cout << "Private Key PKCS8 Base64 DER:" << "\r\n"; std::cout << privKeyPkcs8 << "\r\n"; } |
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