feat: Add ere-zisk with only compile and execute utility. (#27)

* feat: add `ere-zisk` and `compile` functionality

* fix: use `FixintEncoding` for `Input::as_bytes` to make it deterministic

* feat: implement `zkVM::execute`

* fix: make `install_zisk_sdk.sh` work with docker

* chore: add comment why use `#[should_panic]`

* feat: use command `cargo-zisk ...` for `compile`, `execute`, `prove` and `verify`

* ci

* fix: invalid proof

tests/zisk/compile/basic/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "ere-test-zisk-guest"
+version = "0.1.0"
+edition = "2021"
+
+[workspace]
+
+[dependencies]
+ziskos = { git = "https://github.com/0xPolygonHermez/zisk.git", rev = "f9a3655" }

tests/zisk/compile/basic/src/main.rs

@@ -0,0 +1,14 @@
+#![no_main]
+
+ziskos::entrypoint!(main);
+
+fn main() {
+    // Read an input
+    let n = u32::from_le_bytes(
+        ziskos::read_input()
+            .try_into()
+            .expect("input to be 4 bytes"),
+    );
+    // Write n*2 to output
+    ziskos::set_output(0, n * 2);
+}

tests/zisk/execute/basic/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "ere-test-zisk-guest"
+version = "0.1.0"
+edition = "2021"
+
+[workspace]
+
+[dependencies]
+ziskos = { git = "https://github.com/0xPolygonHermez/zisk.git", rev = "f9a3655" }

tests/zisk/execute/basic/src/main.rs

@@ -0,0 +1,16 @@
+#![no_main]
+
+ziskos::entrypoint!(main);
+
+fn main() {
+    let input = ziskos::read_input();
+    if input.len() != 6 {
+        std::process::exit(1);
+    }
+
+    // Read an input
+    let n = u32::from_le_bytes(input[..4].try_into().unwrap());
+    let a = u16::from_le_bytes(input[4..6].try_into().unwrap()) as u32;
+
+    ziskos::set_output(0, (n + a) * 2);
+}

tests/zisk/prove/basic/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "ere-test-zisk-guest"
+version = "0.1.0"
+edition = "2021"
+
+[workspace]
+
+[dependencies]
+ziskos = { git = "https://github.com/0xPolygonHermez/zisk.git", rev = "f9a3655" }

tests/zisk/prove/basic/src/main.rs

@@ -0,0 +1,16 @@
+#![no_main]
+
+ziskos::entrypoint!(main);
+
+fn main() {
+    let input = ziskos::read_input();
+    if input.len() != 6 {
+        std::process::exit(1);
+    }
+
+    // Read an input
+    let n = u32::from_le_bytes(input[..4].try_into().unwrap());
+    let a = u16::from_le_bytes(input[4..6].try_into().unwrap()) as u32;
+
+    ziskos::set_output(0, (n + a) * 2);
+}