Decrypt a JWE with a Private Key

See more JSON Web Encryption (JWE) Examples

Demonstrates Jwe.SetPrivateKey, which sets the private key used to decrypt a recipient of a loaded JWE.

The file path is relative to the application's current working directory. An absolute path may also be used. Supply the path appropriate to your own environment.

#include <CkJweW.h>
#include <CkPrivateKeyW.h>

void ChilkatSample(void)
    {
    bool success = false;

    CkJweW jwe;

    //  Load the JWE compact serialization to be decrypted.
    const wchar_t *jweCompact = L"eyJhbGciOiJBMjU2S1ciLCJlbmMiOiJBMjU2R0NNIn0.<...>.<iv>.<ciphertext>.<tag>";
    success = jwe.LoadJwe(jweCompact);
    if (success == false) {
        wprintf(L"%s\n",jwe.lastErrorText());
        return;
    }

    //  The file path is relative to the application's current working directory.  An absolute path
    //  may also be used.  Supply the path appropriate to your own environment.
    //  Load the recipient's private key.
    CkPrivateKeyW privKey;
    success = privKey.LoadPemFile(L"qa_data/recipient_privkey.pem");
    if (success == false) {
        wprintf(L"%s\n",privKey.lastErrorText());
        return;
    }

    //  Set the private key used to decrypt recipient 0.
    success = jwe.SetPrivateKey(0,privKey);
    if (success == false) {
        wprintf(L"%s\n",jwe.lastErrorText());
        return;
    }

    const wchar_t *content = jwe.decrypt(0,L"utf-8");
    if (jwe.get_LastMethodSuccess() == false) {
        wprintf(L"%s\n",jwe.lastErrorText());
        return;
    }

    wprintf(L"%s\n",content);
    }