TCS Security API Programming

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What is the signature of the sign method in the security API?

  1. java.lang.String sign(java.lang.String data, java.lang.String key) throws EncryptionException
  2. java.lang.String sign(java.lang.String data, java.lang.String key)
  3. java.lang.String sign(java.lang.String data)
  4. java.lang.String sign(java.lang.String data) throws SecurityException
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