src/main/java/com/aliyun/oss/common/auth/HmacSHA256Signature.java [54:62]:
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    public String computeSignature(String key, String data) {
        try {
            byte[] signData = sign(key.getBytes(DEFAULT_ENCODING), data.getBytes(DEFAULT_ENCODING), macInstance,
                                LOCK, ALGORITHM);
            return BinaryUtil.toBase64String(signData);
        } catch (UnsupportedEncodingException ex) {
            throw new RuntimeException("Unsupported algorithm: " + DEFAULT_ENCODING, ex);
        }
    }
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src/main/java/com/aliyun/oss/common/auth/HmacSHA1Signature.java [54:62]:
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    public String computeSignature(String key, String data) {
        try {
            byte[] signData = sign(key.getBytes(DEFAULT_ENCODING), data.getBytes(DEFAULT_ENCODING), macInstance,
                                LOCK, ALGORITHM);
            return BinaryUtil.toBase64String(signData);
        } catch (UnsupportedEncodingException ex) {
            throw new RuntimeException("Unsupported algorithm: " + DEFAULT_ENCODING, ex);
        }
    }
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