Quote from: Shannon on June 29, 2012, 06:08 amrecommended key lengths are in section 7 - http://www.ecrypt.eu.org/documents/D.SPA.17.pdfThanks. A web search for "NIST key recommendation" will produce numerous results. Including multiple NIST PDFs and this:http://www.keylength.com/en/4/It includes an easy to read table with the equivalent sizes between bit strength, symmetric (AES), asymmetric (RSA), discrete logarithm, eliptic curve (ECC) and hash types. It also includes how long they should be considered valid for.