Java 8 Update 161 As pointed out in another answer and in Oracle’s release notes for Java 8 Update 161, unlimited cryptography is enabled by default since Update 161 and you shouldn’t have to do anything if using a fresh installation of this version or higher. Java 8 Update 151 With Java 8 Update 151, … Read more
This error means that your Java virtual machine uses a policy that only allows restricted cryptography key sizes due to US export laws. Java 9 and higher The Unlimited Strength Jurisdiction Policy Files are included with Java 9 and used by default (see Security Updates in the Java 9 Migration Guide). If you get this … Read more
Im not very familiar with the Android sdk, but it seems that the android-sdk comes with the BouncyCastle provider already added to the security. What you will have to do in the PC environment is just add it manually, Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider()); if you have access to the policy file, just add an entry like: security.provider.5=org.bouncycastle.jce.provider.BouncyCastleProvider … Read more
To hash a string, use the built-in MessageDigest class: import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; import java.nio.charset.StandardCharsets; import java.math.BigInteger; public class CryptoHash { public static void main(String[] args) throws NoSuchAlgorithmException { MessageDigest md = MessageDigest.getInstance(“SHA-256”); String text = “Text to hash, cryptographically.”; // Change this to UTF-16 if needed md.update(text.getBytes(StandardCharsets.UTF_8)); byte[] digest = md.digest(); String hex = … Read more
There are a couple of commonly quoted solutions to this problem. Unfortunately neither of these are entirely satisfactory: Install the unlimited strength policy files. While this is probably the right solution for your development workstation, it quickly becomes a major hassle (if not a roadblock) to have non-technical users install the files on every computer. … Read more
The terminology is a bit confusing indeed, but both javax.net.ssl.keyStore and javax.net.ssl.trustStore are used to specify which keystores to use, for two different purposes. Keystores come in various formats and are not even necessarily files (see this question), and keytool is just a tool to perform various operations on them (import/export/list/…). The javax.net.ssl.keyStore and javax.net.ssl.trustStore … Read more