U mean to say I can generate 64 bytes and then I can ignore last 8 bytes? so I will get 56 bytes. This value then I have to use as secret key for ECDH
On 18 December 2012 09:57, Jeffrey Walton <noloa...@gmail.com> wrote: > On Mon, Dec 17, 2012 at 11:16 PM, jeetendra gangele > <gangele...@gmail.com> wrote: >> Hi, >> Do we have support for 448 bit hash value generation in openssl.? >> I looked into the header file and I did not find functiobn related to that. >> >> Actually I need to compute shared key for ecdh and that should be 56 Bytes >> long. >> I could genearte the 20 byte 32 bytes but I need 56 bytes only. > 448 bits is 56 bytes. You will have to use a smaller hash and iterate > in a KDF-like fashion; or a larger hash and truncate. > > Jeff > ______________________________________________________________________ > OpenSSL Project http://www.openssl.org > User Support Mailing List openssl-users@openssl.org > Automated List Manager majord...@openssl.org ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List openssl-users@openssl.org Automated List Manager majord...@openssl.org
