Method encode

samples/JGroups/src/S3_PING.java:1465–1500

Calculate the HMAC/SHA1 on a string. @return Signature @throws java.security.NoSuchAlgorithmException If the algorithm does not exist. Unlikely @throws java.security.InvalidKeyException If the key is invalid.

(String awsSecretAccessKey, String canonicalString,
                             boolean urlencode)

         *          If the key is invalid.
         */
        static String encode(String awsSecretAccessKey, String canonicalString,
                             boolean urlencode) {
            // The following HMAC/SHA1 code for the signature is taken from the
            // AWS Platform's implementation of RFC2104 (amazon.webservices.common.Signature)
            //
            // Acquire an HMAC/SHA1 from the raw key bytes.
            SecretKeySpec signingKey=
                    new SecretKeySpec(awsSecretAccessKey.getBytes(), HMAC_SHA1_ALGORITHM);

            // Acquire the MAC instance and initialize with the signing key.
            Mac mac=null;
            try {
                mac=Mac.getInstance(HMAC_SHA1_ALGORITHM);
            }
            catch(NoSuchAlgorithmException e) {
                // should not happen
                throw new RuntimeException("Could not find sha1 algorithm", e);
            }
            try {
                mac.init(signingKey);
            }
            catch(InvalidKeyException e) {
                // also should not happen
                throw new RuntimeException("Could not initialize the MAC algorithm", e);
            }

            // Compute the HMAC on the digest, and set it.
            String b64=Base64.encodeBytes(mac.doFinal(canonicalString.getBytes()));

            if(urlencode) {
                return urlencode(b64);
            }
            else {
                return b64;
            }
        }

        static Map paramsForListOptions(String prefix, String marker, Integer maxKeys) {
            return paramsForListOptions(prefix, marker, maxKeys, null);