ThreadLocalRandom 即:java.util.concurrent.ThreadLocalRandom SecureRandom即:java.security.SecureRandom Q:Random是不是线程安全的? A:Random是线程安全的,但是多线程下可能性能比较低。 参考: http://docs.oracle.com/javase/7/docs/api/j
SecureRandom即:java.security.SecureRandom Q:Random是不是线程安全的? A:Random是线程安全的,但是多线程下可能性能比较低。 参考: http://docs.oracle.com/javase/7/docs/api/java/util/Random.htmlhttp://stackoverflow.com/questions/5819638/is-random-class-thread-safe Q:ThreadLocalRandom为什么这么快? A:...
A SecureRandom service provider can advertise that it is thread-safe by setting the service provider attribute "ThreadSafe" to "true" when registering the provider. Otherwise, this class will instead synchronize access to the following methods of the SecureRandomSpi implementation: SecureRandomSpi.engin...
Thread safety SecureRandom objects are safe for use by multiple concurrent threads. Added in 1.1. Java documentation for java.security.SecureRandom. Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described...
[API 2013] SecureRandom [Sethi 2009] Proper Use of Java’s SecureRandom [Long 2012] MSC02-J.Generate strong random numbers 指南15:不要依赖可以被不可信代码覆盖的方法 不可信代码可以滥用可信代码提供的API来覆盖一些方法,如Object.equals()、Object. hashCode()和Thread.run()。这些方法是很重要的目标,...
Collections.shuffle ——打乱列表的排序。注意,你可以为此方法提供自己的随机生成器,可以是 java.util.Random,java.util.ThreadLocalRandom 或 java.security.SecureRandom。 Collections.sort —— 根据自然排序或给定的 Comparator 对列表进行排序。 Collections.swap —— 根据给定的位置交换列表中的2个元素(许多开发者...
SecureRandom Legacy BigInteger.ZERO Integer.MAX_VALUE Integer.MAX_VALUE ThreadLocalRandom * Legacy BigInteger.ONE.shiftLeft(64) 64 1 Xoroshiro128PlusPlus Xoroshiro BigInteger.ONE.shiftLeft(128).subtract(BigInteger.ONE) 128 1 Xoshiro256PlusPlus Xoshiro BigInteger.ONE.shiftLeft(256).subtract(BigInteger.ONE...
Available SecureRandom algorithms can be listed with a code like this: importjava.util.Set;importjava.security.Security;importjava.security.SecureRandom;publicclassListSecureRandomAlgorithms{publicstaticvoidmain(String[]args) {finalSet<String>algorithms=Security.getAlgorithms("SecureRandom");for(String algorith...
classRandomSecretProvider:SecretProvider{companionobject{fungenerateSecret()=SecureRandom().let{valbyteArray=ByteArray(20) it.nextBytes(byteArray)TOTPSecret(byteArray) } }overridefungenerateSecret()=RandomSecretProvider.generateSecret() } To use any of these, just do: ...
package com; import java.io.CharArrayWriter; import java.io.File; import java.io.FileReader; import java.io.IOException; import .SocketTimeoutException; import java.security.SecureRandom; import java.util.Vector; import ch.ethz.ssh2.ConnectionInfo; import ch.ethz.ssh2.ConnectionMonitor; import ch...