package com.yeshi.buwan.util.zhibo;
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import javax.crypto.Mac;
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import javax.crypto.spec.SecretKeySpec;
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public class HuaJiaoSign {
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public static String sign(String randNum,String authtime,String uri) {
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String ak = "10017"; //ak是在开放平台系统自动分配的App-ID
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String sk = "SoAQK7tpN4BQ12bt5KLGPOgzRkFZoDRB"; //sk是在开放平台系统自动分配的Secret-Key
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String rand_num = randNum; //生成随机数
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String auth_time = authtime; //生成时间戳
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//测试uri
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// String uri = "/live/getFeeds?platform=server&tag=juhe&num=1";
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String auth_string = ak + "\n" + auth_time + "\n" + rand_num + "\n" + uri;
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String encrypt_string = Base64.encode(hmacSha1(auth_string, sk));
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String authorization = ak + ":" + encrypt_string;
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return authorization;
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}
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private static byte[] hmacSha1(String value, String key) {
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try {
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// Get an hmac sha1 key from the raw key bytes
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byte[] keyBytes = key.getBytes();
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SecretKeySpec signingKey = new SecretKeySpec(keyBytes, "HmacSHA1");
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// Get an hmac sha1 Mac instance and initialize with the signing key
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Mac mac = Mac.getInstance("HmacSHA1");
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mac.init(signingKey);
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// Compute the hmac on input data bytes
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byte[] rawHmac = mac.doFinal(value.getBytes());
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return rawHmac;
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} catch (Exception e) {
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throw new RuntimeException(e);
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}
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}
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private static final class Base64 {
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private static final int BASELENGTH = 128;
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private static final int LOOKUPLENGTH = 64;
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private static final int TWENTYFOURBITGROUP = 24;
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private static final int EIGHTBIT = 8;
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private static final int SIXTEENBIT = 16;
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private static final int SIGN = -128;
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private static char PAD = '=';
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private static byte[] base64Alphabet = new byte[BASELENGTH];
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private static char[] lookUpBase64Alphabet = new char[LOOKUPLENGTH];
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static {
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for (int i = 0; i < BASELENGTH; ++i) {
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base64Alphabet[i] = -1;
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}
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for (int i = 'Z'; i >= 'A'; i--) {
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base64Alphabet[i] = (byte) (i - 'A');
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}
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for (int i = 'z'; i >= 'a'; i--) {
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base64Alphabet[i] = (byte) (i - 'a' + 26);
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}
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for (int i = '9'; i >= '0'; i--) {
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base64Alphabet[i] = (byte) (i - '0' + 52);
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}
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base64Alphabet['+'] = 62;
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base64Alphabet['/'] = 63;
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for (int i = 0; i <= 25; i++) {
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lookUpBase64Alphabet[i] = (char) ('A' + i);
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}
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for (int i = 26, j = 0; i <= 51; i++, j++) {
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lookUpBase64Alphabet[i] = (char) ('a' + j);
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}
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for (int i = 52, j = 0; i <= 61; i++, j++) {
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lookUpBase64Alphabet[i] = (char) ('0' + j);
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}
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lookUpBase64Alphabet[62] = '+';
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lookUpBase64Alphabet[63] = '/';
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}
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private static String encode(byte[] binaryData) {
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if (binaryData == null) {
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return null;
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}
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int lengthDataBits = binaryData.length * EIGHTBIT;
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if (lengthDataBits == 0) {
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return "";
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}
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int fewerThan24bits = lengthDataBits % TWENTYFOURBITGROUP;
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int numberTriplets = lengthDataBits / TWENTYFOURBITGROUP;
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int numberQuartet = fewerThan24bits != 0 ? numberTriplets + 1
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: numberTriplets;
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char encodedData[];
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encodedData = new char[numberQuartet * 4];
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byte k = 0, l = 0, b1 = 0, b2 = 0, b3 = 0;
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int encodedIndex = 0;
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int dataIndex = 0;
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for (int i = 0; i < numberTriplets; i++) {
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b1 = binaryData[dataIndex++];
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b2 = binaryData[dataIndex++];
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b3 = binaryData[dataIndex++];
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l = (byte) (b2 & 0x0f);
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k = (byte) (b1 & 0x03);
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byte val1 = ((b1 & SIGN) == 0) ? (byte) (b1 >> 2)
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: (byte) ((b1) >> 2 ^ 0xc0);
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byte val2 = ((b2 & SIGN) == 0) ? (byte) (b2 >> 4)
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: (byte) ((b2) >> 4 ^ 0xf0);
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byte val3 = ((b3 & SIGN) == 0) ? (byte) (b3 >> 6)
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: (byte) ((b3) >> 6 ^ 0xfc);
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encodedData[encodedIndex++] = lookUpBase64Alphabet[val1];
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encodedData[encodedIndex++] = lookUpBase64Alphabet[val2 | (k << 4)];
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encodedData[encodedIndex++] = lookUpBase64Alphabet[(l << 2) | val3];
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encodedData[encodedIndex++] = lookUpBase64Alphabet[b3 & 0x3f];
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}
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// form integral number of 6-bit groups
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if (fewerThan24bits == EIGHTBIT) {
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b1 = binaryData[dataIndex];
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k = (byte) (b1 & 0x03);
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byte val1 = ((b1 & SIGN) == 0) ? (byte) (b1 >> 2)
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: (byte) ((b1) >> 2 ^ 0xc0);
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encodedData[encodedIndex++] = lookUpBase64Alphabet[val1];
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encodedData[encodedIndex++] = lookUpBase64Alphabet[k << 4];
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encodedData[encodedIndex++] = PAD;
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encodedData[encodedIndex++] = PAD;
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} else if (fewerThan24bits == SIXTEENBIT) {
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b1 = binaryData[dataIndex];
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b2 = binaryData[dataIndex + 1];
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l = (byte) (b2 & 0x0f);
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k = (byte) (b1 & 0x03);
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byte val1 = ((b1 & SIGN) == 0) ? (byte) (b1 >> 2)
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: (byte) ((b1) >> 2 ^ 0xc0);
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byte val2 = ((b2 & SIGN) == 0) ? (byte) (b2 >> 4)
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: (byte) ((b2) >> 4 ^ 0xf0);
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encodedData[encodedIndex++] = lookUpBase64Alphabet[val1];
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encodedData[encodedIndex++] = lookUpBase64Alphabet[val2 | (k << 4)];
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encodedData[encodedIndex++] = lookUpBase64Alphabet[l << 2];
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encodedData[encodedIndex++] = PAD;
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}
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return new String(encodedData);
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}
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}
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}
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