本文实例讲述了Java SHA-256加密的两种实现方法。分享给大家供大家参考,具体如下:
参考文献 Java实现SHA256算法 - 自学java的小陈 - 博客园 (cnblogs.com)
1、利用Apache的工具类实现加密:
maven:
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<dependency> <groupId>commons-codec</groupId> <artifactId>commons-codec</artifactId> <version>${common-codec.version}</version> </dependency>
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实现代码:
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/*** * 利用Apache的工具类实现SHA-256加密 * @param str 加密后的报文 * @return
*/ public static String getSHA256Str(String str){ MessageDigest messageDigest; String encdeStr = ""; try { messageDigest = MessageDigest.getInstance("SHA-256"); byte[] hash = messageDigest.digest(str.getBytes("UTF-8")); encdeStr = Hex.encodeHexString(hash); } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } return encdeStr; }
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2、利用Java自带的实现加密:
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/** * 利用java原生的摘要实现SHA256加密 * @param str 加密后的报文 * @return
* import java.io.UnsupportedEncodingException;
* import java.security.MessageDigest;
* import java.security.NoSuchAlgorithmException;
*/ public static String getSHA256StrJava(String str){ MessageDigest messageDigest; String encodeStr = ""; try { messageDigest = MessageDigest.getInstance("SHA-256"); messageDigest.update(str.getBytes("UTF-8")); encodeStr = byte2Hex(messageDigest.digest()); } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } return encodeStr; } /** * 将byte转为16进制 * @param bytes * @return */ private static String byte2Hex(byte[] byteBuffer){ StringBuffer strHexString = new StringBuffer();
for (int i = 0; i < byteBuffer.length; i++) {
String hex = Integer.toHexString(0xff & byteBuffer[i]);
if (hex.length() == 1) {
strHexString.append('0');
}
strHexString.append(hex);
}
return stringBuffer.toString(); }标签:messageDigest,编码,return,String,str,Java,SHA256,加密 From: https://www.cnblogs.com/sandyflower/p/17491014.html
}