title: Unable to understand the use of these functions
body: <p>I was reading a smart contract and ran across these functions. I have not been able to get my head around it. Can someone explain what these fucntions do?</p>
  
  <pre><code>uECC_decompress()
  rhash_keccak_256_init()
  rhash_keccak_update()
  rhash_keccak_final()
  </code></pre>