title: md5 hash function in binary format
body: <p>I am trying to calculate the digests of a file using md5 algorithm. I am asked to format the output to be in binary not hex. So this is my command in terminal (I use mac):</p>
  
  <p>openssl dgst -md5 -binary ~/Documents/msg_Joudi.txt > ~/Documents/hash.txt </p>
  
  <p>this generates hash.txt file, but its content is not in binary format, and I do not know where is the error. </p>