On 03.02.2015 11:16, Billy Brumley wrote: >> $ echo -n foobar | openssl dgst -sha256 -hex -hmac aabbcc >> (stdin)= 6e74cdc3b72b8b66535b914357c7d656a22acbb1700b4e6de688fd5c091d305c > > This gets posted every once in a while -- google around. Something > about the hmac switch not doing what you think it's doing. > > $ echo -n foobar | openssl dgst -sha256 -mac HMAC -macopt hexkey:aabbcc > (stdin)= 985343745ee86b452c7c0b327171829c77e1a022f423d95156b52fa22083db8e Ah, interesting. I did google the issue, but only found post of people who didn't realize that echo without "-n" appends a newline. If this topic really comes up every now and then, I'd still suggest updating the help page to clarify while remaining identical behavior. Currently it reads "-hmac arg set the HMAC key to arg". I would suggest "-hmac str set the HMAC key to the string str". Regards, Johannes
