如何在Java中生成SALT值？

Question

将Java中的SALT值生成为至少32字节长的字符串的最佳方法是什么？

Answer 1

final Random r = new SecureRandom();
byte[] salt = new byte[32];
r.nextBytes(salt);
/** String encodedSalt = Base64.encodeBase64String(salt); */

Answer 2

在SpringSecurity中，您可以使用org.springframework.security.crypto.keygen.KeyGenerators

http://static.springsource.org/spring-security/site/docs/3.1.x/apidocs/org/springframework/security/crypto/keygen/KeyGenerators.html

http://docs.spring.io/spring-security/site/docs/3.2.x/reference/htmlsingle/#spring-security-crypto-keygenerators