diff --git a/Makefile b/Makefile
index aa1331b..d9c46cd 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,21 @@
+VERSION:= v0.1.0
+
+all: clean generator trust
+
+trust:
+	if [[ ! -f generator-$(VERSION) ]]; then \
+		make -B generator || exit 1; \
+	fi
+	ln -sf generator-$(VERSION) generator
 
 generator:
 	cd generator-native && cargo build --release
 	ln -sf generator-native/target/release/generator-native generator
+	cp -f `readlink generator` ./generator-$(VERSION)
+	gpg --sign ./generator-$(VERSION)
+
+clean:
+	rm -f generator-v*
 
 sfexec-output:
 	g++ -Iinclude/ -w --std=c++17 main.cpp sha256_literal/sha256.cpp -o sfexec
diff --git a/generator b/generator
index 9deb1a7..8a5e72b 120000
--- a/generator
+++ b/generator
@@ -1 +1 @@
-generator-native/target/release/generator-native
\ No newline at end of file
+generator-v0.1.0
\ No newline at end of file
diff --git a/generator-native/Cargo.toml b/generator-native/Cargo.toml
index 6ebb2f9..92b669c 100644
--- a/generator-native/Cargo.toml
+++ b/generator-native/Cargo.toml
@@ -2,9 +2,10 @@
 name = "generator-native"
 version = "0.1.0"
 authors = ["Avril <flanchan@cumallover.me>"]
+license = "GPL 3.0"
 edition = "2018"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-heaparray = { git = "https://github.com/notflan/heaparray" }
\ No newline at end of file
+heaparray = { git = "https://github.com/notflan/heaparray" }
diff --git a/generator-native/src/arg.rs b/generator-native/src/arg.rs
index 325da44..2ebcbb8 100644
--- a/generator-native/src/arg.rs
+++ b/generator-native/src/arg.rs
@@ -3,6 +3,7 @@ use crate::{
 };
 
 pub enum OperationMode {
+    Version(bool),
     Normal(Options, Vec<String>),
     Help,
 }
@@ -22,6 +23,12 @@ pub fn parse() -> Result<OperationMode, &'static str>
 	    "-h" if i == 1 => {
 		return Ok(OperationMode::Help);
 	    },
+	    "-v" if i==1 => {
+		return Ok(OperationMode::Version(false));
+	    },
+	    "-V" if i==1 => {
+		return Ok(OperationMode::Version(true));
+	    },
 	    "-s" if look => {
 		opt |= Opt::Silent;
 	    },
diff --git a/generator-native/src/main.rs b/generator-native/src/main.rs
index a796d50..fae3075 100644
--- a/generator-native/src/main.rs
+++ b/generator-native/src/main.rs
@@ -28,13 +28,28 @@ macro_rules! flush {
     }
 }
 
+fn version(verbose: bool)
+{
+    if verbose {
+	println!("sfexec-generator-native verison: {}", env!("CARGO_PKG_VERSION"));
+	println!("author: {} (https://flanchan.moe/)", env!("CARGO_PKG_AUTHORS"));
+	println!("license: GPL 3.0\n");
+    } else {
+	print!("{}", env!("CARGO_PKG_VERSION"));
+    }
+}
+
 fn usage() -> ! {
     let prog = &arg::program_name();
+    version(true);
     println!("Usage: {} [-s] [-e <exec string>] [-o <output file>] [-] <files...>", prog);
     println!("Usage: {} -h", prog);
+    println!("Usage: {} -v|-V", prog);
     println!();
-    println!(" -\t\tStop reading options.");
     println!(" -h\t\tPrint this message.");
+    println!(" -v\t\tPrint version.");
+    println!(" -V\t\tPrint program info.");
+    println!(" -\t\tStop reading options.");
     println!(" -s\t\tSilent mode.");
     println!(" -e <exec>\tScript to run after extraction.");
     println!(" -o <file>\tOutput filename.");
@@ -62,7 +77,7 @@ where From: Read,
 }
 
 fn attempt_get_name<'a, P>(path: &'a P) -> Result<&'a str, &'static str>
-    where P: AsRef<Path> + ?Sized
+where P: AsRef<Path> + ?Sized
 {
     let path = path.as_ref();
     if let Some(path) = path.file_name() {
@@ -77,23 +92,8 @@ fn attempt_get_name<'a, P>(path: &'a P) -> Result<&'a str, &'static str>
     }
 }
 
-fn main() -> Result<(), Box<dyn Error>>{
-
-    /*let file = OpenOptions::new()
-	.read(true)
-	.open("test.txt")?;
-
-
-    println!("{{");
-    for buf in file.into_iter(4)
-	.map(|byte| format!("0x{:02x},", byte))
-	.group_at(4)
-	.map(|strs| format!("\t{}", strs.join(" ")))
-    {
-	println!("{}", buf);
-    }
-    println!("}}");*/
-
+fn main() -> Result<(), Box<dyn Error>>
+{
     match arg::parse()? {
 	arg::OperationMode::Normal(options, files) => {
 	    let output = options.find(|opt| match opt {
@@ -190,6 +190,9 @@ fn main() -> Result<(), Box<dyn Error>>{
 	arg::OperationMode::Help => {
 	    usage();
 	},
+	arg::OperationMode::Version(verbose) => {
+	    version(verbose);
+	},
     };
 
     Ok(())
diff --git a/generator-v0.1.0 b/generator-v0.1.0
new file mode 100755
index 0000000..fff904b
Binary files /dev/null and b/generator-v0.1.0 differ
diff --git a/generator-v0.1.0.gpg b/generator-v0.1.0.gpg
new file mode 100644
index 0000000..538f790
Binary files /dev/null and b/generator-v0.1.0.gpg differ