微信开放平台JS SDK接入sha1算法

阳光穿透心脏的1/2处 2022-08-05 02:18 192阅读 0赞

接入微信开放平台（JS SDK）使用的参数签名算法

\#微信接入文档

http://mp.weixin.qq.com/wiki/7/aaa137b55fb2e0456bf8dd9148dd613f.html

package com.util;
    
    public class SHA1 { 
        private final int[] abcde = { 
                0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476, 0xc3d2e1f0 
            }; 
        // 摘要数据存储数组 
        private int[] digestInt = new int[5]; 
        // 计算过程中的临时数据存储数组 
        private int[] tmpData = new int[80]; 
        // 计算sha-1摘要 
        private int process_input_bytes(byte[] bytedata) { 
            // 初试化常量 
            System.arraycopy(abcde, 0, digestInt, 0, abcde.length); 
            // 格式化输入字节数组，补10及长度数据 
            byte[] newbyte = byteArrayFormatData(bytedata); 
            // 获取数据摘要计算的数据单元个数 
            int MCount = newbyte.length / 64; 
            // 循环对每个数据单元进行摘要计算 
            for (int pos = 0; pos < MCount; pos++) { 
                // 将每个单元的数据转换成16个整型数据，并保存到tmpData的前16个数组元素中 
                for (int j = 0; j < 16; j++) { 
                    tmpData[j] = byteArrayToInt(newbyte, (pos * 64) + (j * 4)); 
                } 
                // 摘要计算函数 
                encrypt(); 
            } 
            return 20; 
        } 
        // 格式化输入字节数组格式 
        private byte[] byteArrayFormatData(byte[] bytedata) { 
            // 补0数量 
            int zeros = 0; 
            // 补位后总位数 
            int size = 0; 
            // 原始数据长度 
            int n = bytedata.length; 
            // 模64后的剩余位数 
            int m = n % 64; 
            // 计算添加0的个数以及添加10后的总长度 
            if (m < 56) { 
                zeros = 55 - m; 
                size = n - m + 64; 
            } else if (m == 56) { 
                zeros = 63; 
                size = n + 8 + 64; 
            } else { 
                zeros = 63 - m + 56; 
                size = (n + 64) - m + 64; 
            } 
            // 补位后生成的新数组内容 
            byte[] newbyte = new byte[size]; 
            // 复制数组的前面部分 
            System.arraycopy(bytedata, 0, newbyte, 0, n); 
            // 获得数组Append数据元素的位置 
            int l = n; 
            // 补1操作 
            newbyte[l++] = (byte) 0x80; 
            // 补0操作 
            for (int i = 0; i < zeros; i++) { 
                newbyte[l++] = (byte) 0x00; 
            } 
            // 计算数据长度，补数据长度位共8字节，长整型 
            long N = (long) n * 8; 
            byte h8 = (byte) (N & 0xFF); 
            byte h7 = (byte) ((N >> 8) & 0xFF); 
            byte h6 = (byte) ((N >> 16) & 0xFF); 
            byte h5 = (byte) ((N >> 24) & 0xFF); 
            byte h4 = (byte) ((N >> 32) & 0xFF); 
            byte h3 = (byte) ((N >> 40) & 0xFF); 
            byte h2 = (byte) ((N >> 48) & 0xFF); 
            byte h1 = (byte) (N >> 56); 
            newbyte[l++] = h1; 
            newbyte[l++] = h2; 
            newbyte[l++] = h3; 
            newbyte[l++] = h4; 
            newbyte[l++] = h5; 
            newbyte[l++] = h6; 
            newbyte[l++] = h7; 
            newbyte[l++] = h8; 
            return newbyte; 
        } 
        private int f1(int x, int y, int z) { 
            return (x & y) | (~x & z); 
        } 
        private int f2(int x, int y, int z) { 
            return x ^ y ^ z; 
        } 
        private int f3(int x, int y, int z) { 
            return (x & y) | (x & z) | (y & z); 
        } 
        private int f4(int x, int y) { 
            return (x << y) | x >>> (32 - y); 
        } 
        // 单元摘要计算函数 
        private void encrypt() { 
            for (int i = 16; i <= 79; i++) { 
                tmpData[i] = f4(tmpData[i - 3] ^ tmpData[i - 8] ^ tmpData[i - 14] ^ 
                        tmpData[i - 16], 1); 
            } 
            int[] tmpabcde = new int[5]; 
            for (int i1 = 0; i1 < tmpabcde.length; i1++) { 
                tmpabcde[i1] = digestInt[i1]; 
            } 
            for (int j = 0; j <= 19; j++) { 
                int tmp = f4(tmpabcde[0], 5) + 
                    f1(tmpabcde[1], tmpabcde[2], tmpabcde[3]) + tmpabcde[4] + 
                    tmpData[j] + 0x5a827999; 
                tmpabcde[4] = tmpabcde[3]; 
                tmpabcde[3] = tmpabcde[2]; 
                tmpabcde[2] = f4(tmpabcde[1], 30); 
                tmpabcde[1] = tmpabcde[0]; 
                tmpabcde[0] = tmp; 
            } 
            for (int k = 20; k <= 39; k++) { 
                int tmp = f4(tmpabcde[0], 5) + 
                    f2(tmpabcde[1], tmpabcde[2], tmpabcde[3]) + tmpabcde[4] + 
                    tmpData[k] + 0x6ed9eba1; 
                tmpabcde[4] = tmpabcde[3]; 
                tmpabcde[3] = tmpabcde[2]; 
                tmpabcde[2] = f4(tmpabcde[1], 30); 
                tmpabcde[1] = tmpabcde[0]; 
                tmpabcde[0] = tmp; 
            } 
            for (int l = 40; l <= 59; l++) { 
                int tmp = f4(tmpabcde[0], 5) + 
                    f3(tmpabcde[1], tmpabcde[2], tmpabcde[3]) + tmpabcde[4] + 
                    tmpData[l] + 0x8f1bbcdc; 
                tmpabcde[4] = tmpabcde[3]; 
                tmpabcde[3] = tmpabcde[2]; 
                tmpabcde[2] = f4(tmpabcde[1], 30); 
                tmpabcde[1] = tmpabcde[0]; 
                tmpabcde[0] = tmp; 
            } 
            for (int m = 60; m <= 79; m++) { 
                int tmp = f4(tmpabcde[0], 5) + 
                    f2(tmpabcde[1], tmpabcde[2], tmpabcde[3]) + tmpabcde[4] + 
                    tmpData[m] + 0xca62c1d6; 
                tmpabcde[4] = tmpabcde[3]; 
                tmpabcde[3] = tmpabcde[2]; 
                tmpabcde[2] = f4(tmpabcde[1], 30); 
                tmpabcde[1] = tmpabcde[0]; 
                tmpabcde[0] = tmp; 
            } 
            for (int i2 = 0; i2 < tmpabcde.length; i2++) { 
                digestInt[i2] = digestInt[i2] + tmpabcde[i2]; 
            } 
            for (int n = 0; n < tmpData.length; n++) { 
                tmpData[n] = 0; 
            } 
        } 
        // 4字节数组转换为整数 
        private int byteArrayToInt(byte[] bytedata, int i) { 
            return ((bytedata[i] & 0xff) << 24) | ((bytedata[i + 1] & 0xff) << 16) | 
            ((bytedata[i + 2] & 0xff) << 8) | (bytedata[i + 3] & 0xff); 
        } 
        // 整数转换为4字节数组 
        private void intToByteArray(int intValue, byte[] byteData, int i) { 
            byteData[i] = (byte) (intValue >>> 24); 
            byteData[i + 1] = (byte) (intValue >>> 16); 
            byteData[i + 2] = (byte) (intValue >>> 8); 
            byteData[i + 3] = (byte) intValue; 
        } 
        // 将字节转换为十六进制字符串 
        private static String byteToHexString(byte ib) { 
            char[] Digit = { 
                    '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 
                    'D', 'E', 'F' 
                }; 
            char[] ob = new char[2]; 
            ob[0] = Digit[(ib >>> 4) & 0X0F]; 
            ob[1] = Digit[ib & 0X0F]; 
            String s = new String(ob); 
            return s; 
        } 
        // 将字节数组转换为十六进制字符串 
        private static String byteArrayToHexString(byte[] bytearray) { 
            String strDigest = ""; 
            for (int i = 0; i < bytearray.length; i++) { 
                strDigest += byteToHexString(bytearray[i]); 
            } 
            return strDigest; 
        } 
        // 计算sha-1摘要，返回相应的字节数组 
        public byte[] getDigestOfBytes(byte[] byteData) { 
            process_input_bytes(byteData); 
            byte[] digest = new byte[20]; 
            for (int i = 0; i < digestInt.length; i++) { 
                intToByteArray(digestInt[i], digest, i * 4); 
            } 
            return digest; 
        } 
        // 计算sha-1摘要，返回相应的十六进制字符串 
        public String getDigestOfString(byte[] byteData) { 
            return byteArrayToHexString(getDigestOfBytes(byteData)); 
        } 
        public static void main(String[] args) { 
            String data = "123456"; 
            System.out.println(data); 
            String digest = new SHA1().getDigestOfString(data.getBytes()); 
            System.out.println(digest);
           
           // System.out.println( ToMD5.convertSHA1(data).toUpperCase());
        } 
    }