seccure(1) on Linux
The text 15c35f7e7b21, as Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny), Debian 4.0 (Etch) shipped it.
SECCURE Elliptic Curve Crypto Utility for Reliable Encryption
Flags it lists
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-F -
-a -
-b -
-c -
-d -
-f -
-i -
-m -
-o -
-q -
-s -
-v