Quote from: bit22gen on June 02, 2016, 09:07:37 PM

Quote from: cyberguy on May 25, 2016, 02:54:49 PM

is there any command line utility that can be used to do the secp256k1 calculation on a given hexadecimal number (private key) and print the result (public key) to stdout in compressed and/or uncompressed form. can this be done using openssl ?

bitgen can be used:
http://bitcoin-gen.org/

Currently it will require two commands to get the information, but modifying the source to give all information at once is trivial.
It can run on a 32-bit machine and has low memory requirements.

For example:
$ bitgen hex 12312381273918273128937128912c3b1293cb712938cb12983cb192cb1289b3 info

Would give:
Wif : 5HxJGdttiqC6hd4wXyExr8Jmv6WugaCtZtteoT8MCj74fhanXrQ

Next:
$ bitgen info 5HxJGdttiqC6hd4wXyExr8Jmv6WugaCtZtteoT8MCj74fhanXrQ

Gives:
Public point :(6B4D16EF98953A36752D7A2776B5989ED8700B8F80ECAA1818F15E3EF31D1532
: E9B6F7C6BE1017AC8D0A733DD099CBBB3A0DAEC89514F50F57A4B0259ACC0F10)
Public key : 046B4D16EF98953A36752D7A2776B5989ED8700B8F80ECAA1818F15E3EF31D1532E9B6F7C6BE101 7AC8D0A733DD099CBBB3A0DAEC89514F50F57A4B0259ACC0F10

THIS is exactly what I wanted. In fact it is more than what I wanted. Thanks a lot.

To all those who posted above. Thanks for your replies. But I will only be considering bitgen, since the features I need are present in it.