tree 616343594e3555ac522d8e848df534e528cb80ac
parent faa083a3caaf6b50f46fde424c842a6ef4d5b655
author Srdjan Petrovic <spetrovic@google.com> 1414020666 -0700
committer Srdjan Petrovic <spetrovic@google.com> 1414020673 -0700

veyron.io/veyron/veyron/security: create principal from signer.

Add methods that create in-memory and persistent principals from an
existing signer.

We need this functionality as in Android we store the private key inside
a hardware token and pass a signer into Go.

Change-Id: I5575ec92533ded5dae22219ba39e9a8195b8ee4f