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(C) Iterate Keys and Certs in PEM

Demonstrates how to access each of the private keys and certs contained within a PEM.

Chilkat C/C++ Library Downloads

MS Visual C/C++

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#include <C_CkGlobal.h>
#include <C_CkPem.h>
#include <C_CkPrivateKey.h>
#include <C_CkCert.h>

void ChilkatSample(void)
    {
    HCkGlobal chilkatGlob;
    BOOL success;
    HCkPem pem;
    const char *password;
    const char *pemContent;
    int numPrivateKeys;
    int i;
    HCkPrivateKey privKey;
    int numCerts;
    HCkCert cert;

    //  Starting in v9.5.0.49, all Chilkat classes can be unlocked at once at the beginning of a program
    //  by calling UnlockBundle.  It requires a Bundle unlock code.
    chilkatGlob = CkGlobal_Create();
    success = CkGlobal_UnlockBundle(chilkatGlob,"Anything for 30-day trial.");
    if (success != TRUE) {
        printf("%s\n",CkGlobal_lastErrorText(chilkatGlob));
        CkGlobal_Dispose(chilkatGlob);
        return;
    }

    //  The Chilkat PEM class was introduced in v9.5.0.49.
    //  It requires the bundle to be unlocked, as shown above.
    pem = CkPem_Create();

    //  Load the PEM from a file.
    //  If the PEM is encrypted, provide a password.  Otherwise pass an empty string for the password.
    password = "myPassword";
    success = CkPem_LoadPemFile(pem,"../myPemFiles/myPem.pem",password);
    if (success != TRUE) {
        printf("%s\n",CkPem_lastErrorText(pem));
        CkGlobal_Dispose(chilkatGlob);
        CkPem_Dispose(pem);
        return;
    }

    //  Note: If the app already has the PEM pre-loaded in a string variable, then load it
    //  by calling LoadPem instead.
    pemContent = "... the PEM contents ...";
    success = CkPem_LoadPem(pem,pemContent,password);
    //  Check for success as before..

    //  Iterate over the private keys.
    numPrivateKeys = CkPem_getNumPrivateKeys(pem);
    i = 0;

    while (i < numPrivateKeys) {

        privKey = CkPem_GetPrivateKey(pem,i);
        printf("Private Key %d is %d in length\n",i,CkPrivateKey_getBitLength(privKey));
        CkPrivateKey_Dispose(privKey);

        i = i + 1;
    }

    //  Iterate over the certificates.
    numCerts = CkPem_getNumCerts(pem);
    i = 0;

    while (i < numCerts) {

        cert = CkPem_GetCert(pem,i);
        printf("Certificate %d : %s\n",i,CkCert_subjectDN(cert));
        CkCert_Dispose(cert);

        i = i + 1;
    }



    CkGlobal_Dispose(chilkatGlob);
    CkPem_Dispose(pem);

    }

 

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