package com.xiaopeng.vehicleConvoy.util;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.IOException;
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import java.io.UnsupportedEncodingException;
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import java.nio.MappedByteBuffer;
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import java.nio.channels.FileChannel;
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/**
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* 该API支持线程安全<br/>
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*/
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public class SHA1Util {
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// --------------------------计算SHA1大写字符串----------------------------------------------
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/**
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* 计算出文件的SHA1大写字符串
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*
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* @param file
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* @return
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* @throws IOException
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*/
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public static String getSHA1UpperString(File file) throws IOException {
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return HexUtil.toUpperCase(getSHA1Bytes(file));
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}
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/**
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* 计算出SHA1后十六进制结果（大写）
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*
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* @param s
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* @return
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*/
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public static String getSHA1UpperString(String s) {
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try {
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return getSHA1UpperString(s.getBytes("UTF-8"));
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} catch (UnsupportedEncodingException e) {
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throw new RuntimeException(e);
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}
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}
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/**
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* 计算出SHA1后十六进制结果（大写）
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*
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* @param bytes
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* @return
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*/
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public static String getSHA1UpperString(byte[] bytes) {
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return HexUtil.toUpperCase(getSHA1Bytes(bytes));
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}
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// --------------------------计算SHA1小写字符串----------------------------------------------
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/**
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* 计算出文件的SHA1小写字符串
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*
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* @param file
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* @return
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* @throws IOException
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*/
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public static String getSHA1LowerString(File file) throws IOException {
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return HexUtil.toLowerCase(getSHA1Bytes(file));
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}
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/**
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* 计算出SHA1后十六进制结果（小写）
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*
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* @param s
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* @return
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*/
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public static String getSHA1LowerString(String s) {
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try {
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return getSHA1LowerString(s.getBytes("UTF-8"));
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} catch (UnsupportedEncodingException e) {
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throw new RuntimeException(e);
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}
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}
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/**
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* 计算出SHA1后十六进制结果（小写）
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*
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* @param bytes
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* @return
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*/
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public static String getSHA1LowerString(byte[] bytes) {
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return HexUtil.toLowerCase(getSHA1Bytes(bytes));
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}
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// ------------------------计算出SHA1的byte[]------------------------------------------------
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public static byte[] getSHA1Bytes(byte[] bytes) {
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ThreadLocalSHA1.current().update(bytes);
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return ThreadLocalSHA1.current().digest();
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}
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public static byte[] getSHA1Bytes(File file) throws IOException {
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FileInputStream in = null;
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FileChannel ch = null;
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try {
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in = new FileInputStream(file);
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ch = in.getChannel();
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MappedByteBuffer byteBuffer = ch.map(FileChannel.MapMode.READ_ONLY, 0, file.length());
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ThreadLocalSHA1.current().update(byteBuffer);
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return ThreadLocalSHA1.current().digest();
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} finally {
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ResourceUtil.closeGracefully(ch);
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ResourceUtil.closeGracefully(in);
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}
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}
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// ------------------------------------------------------------------------
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public static boolean checkPassword(String originContent, String sha1Content) {
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String s = getSHA1LowerString(originContent);
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return s.equals(sha1Content);
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}
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// ------------------------------------------------------------------------
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}
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