签名和验证-Sign

介绍

Hutool针对java.security.Signature做了简化包装，包装类为：Sign，用于生成签名和签名验证。

对于签名算法，Hutool封装了JDK的，具体介绍见：https://docs.oracle.com/javase/7/docs/technotes/guides/security/StandardNames.html#Signature：

  1. // The RSA signature algorithm
  2. NONEwithRSA
  4. // The MD2/MD5 with RSA Encryption signature algorithm
  5. MD2withRSA
  6. MD5withRSA
  8. // The signature algorithm with SHA-* and the RSA
  9. SHA1withRSA
  10. SHA256withRSA
  11. SHA384withRSA
  12. SHA512withRSA
  14. // The Digital Signature Algorithm
  15. NONEwithDSA
  17. // The DSA with SHA-1 signature algorithm
  18. SHA1withDSA
  20. // The ECDSA signature algorithms
  21. NONEwithECDSA
  22. SHA1withECDSA
  23. SHA256withECDSA
  24. SHA384withECDSA
  25. SHA512withECDSA

使用

  1. byte[] data = "我是一段测试字符串".getBytes();
  2. Sign sign = SecureUtil.sign(SignAlgorithm.MD5withRSA);
  3. //签名
  4. byte[] signed = sign.sign(data);
  5. //验证签名
  6. boolean verify = sign.verify(data, signed);