title: Bitcoin and Encryption
body: <p>I'm doing a school project on the security of bitcoin, and I was just wondering if anyone could explain, possibly with credible sources how bitcoin wallets use the passphrase as encryption, what is meant by EVP ("The passphrase is converted to a key/iv using EVP") and just any information that people have about the encryption of bitcoin wallet would be much appreciated. </p>
  
  <p>Thanks &lt;3</p>