1/12/2024 0 Comments Java 11 openjdk![]() Oracle JDK 11 comes with installers for Linux (rpm and deb), macOS (dmg), Windows (exe) and archive files (tar.gz and zip).For Windows, I recommend to download the file jdk-11.0.7_windows-圆4_bin.exe. According to Oracle, JDK 11 will be supported (commercial support) until September 2026.Head to Java SE Development Kit 11 Downloads page and choose the download file appropriate to your operating system. Download and Install Oracle JDK 11Oracle JDK 11 is the first LTS (Long Term Support) Java Development Kit since Oracle changed Java release cadence to every 6 months. You know, Oracle released Java 11 builds under two different licenses: Oracle JDK (commercial build with Oracle Technology Network license) and OpenJDK (open source build with GNU General Public license). It is expected to play a crucial role in defending against quantum attacks and enhancing the security of higher-level protocols and cryptographic schemes.In this post, I will guide you to setup Java 11 on Windows operating system by downloading and installing Java Development Kit (JDK) version 11 from Oracle. The introduction of the KEM API in OpenJDK is a significant step forward in modern cryptography, providing a more secure and efficient way to secure symmetric keys using public key cryptography. The receiver can then call one of that object's decapsulate methods, which takes the received key encapsulation message and returns the shared secret. The receiver calls one of the newDecapsulator methods, which takes the receiver's private key and returns a Decapsulator object. The sender can then call one of that object's encapsulate methods to get an Encapsulated object, which contains a SecretKey and a key encapsulation message. ![]() The sender calls one of the newEncapsulator methods, which takes the receiver's public key and returns an Encapsulator object. The getInstance methods create a new KEM object that implements the specified algorithm. Public Decapsulator newDecapsulator(PrivateKey sk, AlgorithmParameterSpec spec) Public Decapsulator newDecapsulator(PrivateKey sk) SecretKey decapsulate(byte encapsulation, int from, int to, ![]() SecretKey decapsulate(byte encapsulation) throws DecapsulateException Throws InvalidAlgorithmParameterException, InvalidKeyException Public Encapsulator newEncapsulator(PublicKey pk, AlgorithmParameterSpec spec, Public Encapsulator newEncapsulator(PublicKey pk, SecureRandom sr) Public Encapsulator newEncapsulator(PublicKey pk) Int encapsulationSize() // Size of the key encapsulation messageĮncapsulated encapsulate(int from, int to, String algorithm) Int secretSize() // Size of the shared secret Public Encapsulated(SecretKey key, byte encapsulation, byte params) Throws NoSuchAlgorithmException, NoSuchProviderException Public static KEM getInstance(String alg, String p) Public static KEM getInstance(String alg, Provider p) Public static KEM getInstance(String alg) Public class DecapsulateException extends GeneralSecurityException Consider the following code snippets: package javax.crypto The key pair generation function is covered by the existing KeyPairGenerator API, while the encapsulation and decapsulation functions are defined in a new class, KEM. The KEM API consists of three functions: a key pair generation function, a key encapsulation function, and a key decapsulation function. However, it is not a goal to include key pair generation in the KEM API, as the existing KeyPairGenerator API is sufficient. It will allow security providers to implement KEM algorithms in either Java code or native code. ![]() The new API will also enable the use of KEMs in higher-level protocols such as Transport Level Security (TLS) and in cryptographic schemes such as Hybrid Public Key Encryption (HPKE, RFC 9180). KEMs, on the other hand, use properties of the public key to derive a related symmetric key, eliminating the need for padding. However, this requires padding and can be challenging to prove secure. The traditional technique of securing symmetric keys involves encrypting a randomly generated symmetric key with a public key. KEMs are a crucial tool for defending against quantum attacks. The new API aims to enable applications to use KEM algorithms such as RSA Key Encapsulation Mechanism (RSA-KEM), Elliptic Curve Integrated Encryption Scheme (ECIES), and candidate KEM algorithms for the National Institute of Standards and Technology (NIST) Post-Quantum Cryptography standardization process. This JEP introduces an API for Key Encapsulation Mechanisms (KEMs), a modern encryption technique for securing symmetric keys using public key cryptography. JEP 452, Key Encapsulation Mechanism API, has been promoted from Targeted to Completed for JDK 21. ![]()
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