Allowing to use public and private keys from memory
without reading them from disk and without using an
ssh agent.
Signed-off-by: David Calavera <david.calavera@gmail.com>
While Go will assign the correct type to a const block when it
auto-creates the values, assigning makes the const be typeless and will
only gain it in each particular use.
Make each constant in the blocks have an assigned type.