Decrypt a JWE into a StringBuilder

See more JSON Web Encryption (JWE) Examples

Demonstrates Jwe.DecryptSb, which decrypts a recipient of a loaded JWE and writes the plaintext into a StringBuilder.

#include <CkJwe.h>
#include <CkStringBuilder.h>

void ChilkatSample(void)
    {
    bool success = false;

    CkJwe jwe;

    //  Load the JWE compact serialization to be decrypted.
    const char *jweCompact = "eyJhbGciOiJBMjU2S1ciLCJlbmMiOiJBMjU2R0NNIn0.<...>.<iv>.<ciphertext>.<tag>";
    success = jwe.LoadJwe(jweCompact);
    if (success == false) {
        std::cout << jwe.lastErrorText() << "\r\n";
        return;
    }

    //  The 256-bit key-wrapping key (base64) for recipient index 0.  In production, obtain the key
    //  from a secure source rather than hard-coding it.
    const char *base64Key = "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXowMTIzNDU=";
    success = jwe.SetWrappingKey(0,base64Key,"base64");
    if (success == false) {
        std::cout << jwe.lastErrorText() << "\r\n";
        return;
    }

    //  Decrypt recipient index 0, writing the plaintext into a StringBuilder.
    CkStringBuilder sbContent;
    success = jwe.DecryptSb(0,"utf-8",sbContent);
    if (success == false) {
        std::cout << jwe.lastErrorText() << "\r\n";
        return;
    }

    std::cout << sbContent.getAsString() << "\r\n";
    }