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(C++) Duplicate openssl pkey -in private.pem -pubout -out pubkey.pem

How to output the public part of a private key: Demonstrates how to duplicate this OpenSSL command:

openssl pkey -in private.pem -pubout -out pubkey.pem

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#include <CkPrivateKey.h>
#include <CkPublicKey.h>

void ChilkatSample(void)
    {
    bool success;

    CkPrivateKey pkey;

    //  Load the private key from an PEM file:
    success = pkey.LoadPemFile("private.pem");
    if (success != true) {
        std::cout << pkey.lastErrorText() << "\r\n";
        return;
    }

    CkPublicKey *pubKey = pkey.GetPublicKey();
    if (pubKey == 0 ) {
        std::cout << pkey.lastErrorText() << "\r\n";
        return;
    }

    success = pubKey->SaveOpenSslPemFile("pubKey.pem");
    if (success != true) {
        std::cout << pubKey->lastErrorText() << "\r\n";
        return;
    }

    std::cout << "Success." << "\r\n";

    }

 

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