代码语言：java复制
import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.security.MessageDigest;
public class Authorization {
private static final Charset UTF8 = StandardCharsets.UTF_8;;
private static final String SecretId="";
private static final String SecretKey="";
private static final String StartTimestamp = Long.toString(System.currentTimeMillis()/1000L);
private static final String EndTimestamp = Long.toString(System.currentTimeMillis()/1000L 30);
private static final String KeyTime= StartTimestamp ";" EndTimestamp;
public static String HmacSHA1(String key, String msg) throws Exception {
byte[] data = key.getBytes(UTF8);
Mac mac = Mac.getInstance("HmacSHA1");
SecretKeySpec secretKeySpec = new SecretKeySpec(data, mac.getAlgorithm());
mac.init(secretKeySpec);
byte[] HmacSha1 = mac.doFinal(msg.getBytes(UTF8));
StringBuilder stringBuilder = new StringBuilder("");
for (int i = 0; i < HmacSha1.length; i ) {
int v = HmacSha1[i] & 0xFF;
String hv = Integer.toHexString(v);
if (hv.length() < 2) {
stringBuilder.append(0);
}
stringBuilder.append(hv);
}
return stringBuilder.toString();
}
public static String HttpString(String HttpMethod, String UriPathname, String HttpParameters, String HttpHeaders)throws Exception{
return HttpMethod "n" UriPathname "n" HttpParameters "n" HttpHeaders "n";
}
public static String SHA1(String StringToSign) throws Exception{
char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
MessageDigest messageDigest = MessageDigest.getInstance("SHA1");
messageDigest.update(StringToSign.getBytes(UTF8));
byte[] md = messageDigest.digest();
int j = md.length;
char buf[] = new char[j * 2];
int k = 0;
for (int i = 0; i < j; i ) {
byte byte0 = md[i];
buf[k ] = hexDigits[byte0 >>> 4 & 0xf];
buf[k ] = hexDigits[byte0 & 0xf];
}
return new String(buf);
}
public static String Sign(String HttpMethod, String UriPathname) throws Exception{
String SignKey = HmacSHA1(SecretKey, KeyTime);
String HttpStrings = HttpString(HttpMethod, UriPathname, "", "");
String StringToSign = "sha1n" KeyTime "n" SHA1(HttpStrings) "n";
String Signature = HmacSHA1(SignKey, StringToSign);
String Authorization = String.format("q-sign-algorithm=%s&q-ak=%s&q-sign-time=%s&q-key-time=%s&q-header-list=%s&q-url-param-list=%s&q-signature=%s", "sha1", SecretId, KeyTime, KeyTime,"","",Signature);
return Authorization;
}
}
