feat(guests): Add SHA2 program

Simple program which tests the SHA256 hashing algorithm

1 files changed, 19 insertions, 0 deletions

diff --git a/guests/sha2/src/lib.rs b/guests/sha2/src/lib.rs
new file mode 100644
index 0000000..1ca7f72
--- /dev/null
+++ b/guests/sha2/src/lib.rs
@@ -0,0 +1,19 @@
+#![cfg_attr(feature = "no_std", no_std)]
+
+#[cfg(feature = "no_std")]
+extern crate alloc;
+#[cfg(feature = "no_std")]
+use alloc::vec::Vec;
+
+use sha2::{Digest, Sha256};
+
+#[guests_macro::proving_entrypoint]
+pub fn main(secret: Vec<u8>, hash: Vec<u8>) -> bool {
+    let mut hasher = Sha256::new();
+    hasher.update(secret);
+    let result = hasher.finalize();
+
+    let output: [u8; 32] = result.into();
+
+    output.to_vec() == hash
+}