HMAC-SHA1 java版

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import java.security.InvalidKeyException;import java.security.NoSuchAlgorithmException; import javax.crypto.Mac;import javax.crypto.spec.SecretKeySpec; public class HMACSHA1 { private static final String HMAC_SHA1 = "HmacSHA1"; /** * 生成签名数据 *  * @param data *            待加密的数据 * @param key *            加密使用的key * @throws InvalidKeyException * @throws NoSuchAlgorithmException */public static String getSignature(String data, String key) throws Exception {byte[] keyBytes = key.getBytes();SecretKeySpec signingKey = new SecretKeySpec(keyBytes, HMAC_SHA1);Mac mac = Mac.getInstance(HMAC_SHA1);mac.init(signingKey);byte[] rawHmac = mac.doFinal(data.getBytes());StringBuilder sb = new StringBuilder();for (byte b : rawHmac) {sb.append(byteToHexString(b));}return sb.toString();} 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;}}

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