public static String getSignature(String data,String key) throws Exception{
final String ALGORITHM = "HmacSHA1";
final String ENCODING = "UTF-8";
key = "testsecret&";
Mac mac = Mac.getInstance(ALGORITHM);
mac.init(new SecretKeySpec(key.getBytes(ENCODING), ALGORITHM));
byte[] signData = mac.doFinal(data.getBytes(ENCODING));
String signature = new String(Base64.encodeBase64(signData));
return signature;
}
parameter:
GET&%2F&AccessKeyId%3Dtestid&Action%3DDescribeRegions&Format%3DXML&SignatureMethod%3DHMAC-SHA1&SignatureNonce%3D3ee8c1b8-83d3-44af-a94f-4e0ad82fd6cf&SignatureVersion%3D1.0&TimeStamp%3D2016-02-23T12%253A46%253A24Z&Version%3D2014-05-26 testsecret& Result: CT9X0VtwR86fNWSnsc6v8YGOjuE=