ensingerphilipp

package chaCha20Poly1305Encryption;

import javax.crypto.*;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.spec.AlgorithmParameterSpec;
import java.util.Base64;

ensingerphilipp

import org.bouncycastle.crypto.generators.Argon2BytesGenerator;
import org.bouncycastle.crypto.params.Argon2Parameters;
import org.bouncycastle.jce.provider.BouncyCastleProvider;

import javax.crypto.NoSuchPaddingException;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.security.Security;
import java.util.Base64;

ensingerphilipp

package ecdsaSignature;

import java.security.*;
import java.security.spec.ECGenParameterSpec;

public class ECDSAKeyGenerator {

    public static KeyPair generateKeyPair() throws NoSuchAlgorithmException, InvalidAlgorithmParameterException {

        //It is required to use an epileptic Curve with Security Strength <= Security Strength of the used Hashing Function

ensingerphilipp

package ecdsaSignature;

import java.security.Security;
import java.util.Arrays;


//Helper Class to print all supported Epileptic Curves for use in ECDSA
//Refer to http://safecurves.cr.yp.to for a list of save epileptic curves

public class ShowSupportedCurves

ensingerphilipp

package rsaEncryption;

import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.spec.OAEPParameterSpec;
import javax.crypto.spec.PSource;
import java.security.*;
import java.security.spec.MGF1ParameterSpec;

ensingerphilipp

package rsaSignature;

import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;

public class RsaKeyGenerator {

    //Generate RSA Key with size of at least 3072 bits

ensingerphilipp

Keybase proof

I hereby claim:

• I am exspir3 on github.
• I am ensi (https://keybase.io/ensi) on keybase.
• I have a public key ASBah2gTaUraxsNIrtV0T368yfrf0exny8VvbW9WOSTSqAo

To claim this, I am signing this object:

ensingerphilipp

Keybase proof

I hereby claim:

• I am ensingerphilipp on github.
• I am ensi (https://keybase.io/ensi) on keybase.
• I have a public key ASBah2gTaUraxsNIrtV0T368yfrf0exny8VvbW9WOSTSqAo

To claim this, I am signing this object:

ensingerphilipp

#!/usr/bin/env zsh

set -e;
set +m; # Job control would've been nice, but manual round robin it is, sigh.

if [ -z "${ZSH_VERSION+x}" ]; then
    echo 'Try again with zsh.';
    exit 1;
fi;

ensingerphilipp

Note: I took this Guide from https://gist.github.com/dhinakg/5dc595e39440e6d68a24d38e6fea926d and added a way on how to find your AssetAudiences

Note: This writeup is for advanced users and developers. For a guide that will actually walk you through this, ios.cfw.guide is updated. guides.stkc.win should be soon™️.

13.x appears to have issues. 13.5 is confirmed to fail to check updates once you change the audience. If any other versions do this, please let me know.

So, I got bored and decided to do more research into alternates. Turns out you can still abuse it to update to a currently signed Version (15.4.1 as of writing) on iOS versions that don't support alternates. You're welcome.

This requires a jailbreak. Of course, you can do the backup editing stuff if you're not JBed but: