You can get my usual gpg public key here:
http://www.mat.puc-rio.br/~nicolau/sucuri.key
The following gpg public key is intended for more critical use:
http://www.mat.puc-rio.br/~nicolau/boto.key
I also have a pgp public key, but please prefer the gpg key above:
http://www.mat.puc-rio.br/~nicolau/old.key
In case you want to use gpg or pgp but are not familiar with it, follow the links below: