feat: add zeroizing_alloc

Cargo.toml

@@ -38,6 +38,7 @@ log = "0.4"
 env_logger = "0.11"
 log4rs = "1.3"
 pinentry-util = "0.1.1"
+zeroizing-alloc = "0.1.0"
 
 [target.'cfg(target_os = "linux")'.dependencies]
 procfs = { version = "0.13", optional = true }

src/main.rs

@@ -2,6 +2,11 @@ use clap::{App, AppSettings, ArgMatches};
 use rust_util::util_clap::{Command, CommandError};
 use rust_util::{failure_and_exit, information, success, warning};
 
+use zeroizing_alloc::ZeroAlloc;
+
+#[global_allocator]
+static ALLOC: ZeroAlloc<std::alloc::System> = ZeroAlloc(std::alloc::System);
+
 mod db;
 mod proc;
 mod jose;
@@ -85,4 +90,4 @@ fn inner_main() -> CommandError {
         }
     }
     DefaultCommandImpl::run(&matches)
-}
+}