An implementation of CMZ14 credentials in Rust

Ian Goldberg c446828be7 Refactor the two types of credential issuing each into their own submodule %!s(int64=3) %!d(string=hai) anos
src c446828be7 Refactor the two types of credential issuing each into their own submodule %!s(int64=3) %!d(string=hai) anos
tests c446828be7 Refactor the two types of credential issuing each into their own submodule %!s(int64=3) %!d(string=hai) anos
Cargo.toml 1a145a6952 Nonblind credential issuing and verification of the resulting proof %!s(int64=3) %!d(string=hai) anos