diff --git a/crates/crypto/src/hashes/sha256.rs b/crates/crypto/src/hashes/sha256.rs
index c555eb2b6..8ae500d40 100644
--- a/crates/crypto/src/hashes/sha256.rs
+++ b/crates/crypto/src/hashes/sha256.rs
@@ -43,4 +43,30 @@ mod tests {
             ]
         );
     }
+
+    #[test]
+    fn test_sha256() {
+        // Test vector from a known SHA-256 hash
+        let data = b"hello world";
+        let expected_hash: [u8; 32] = [
+            0xb9, 0x8f, 0x3f, 0x2e, 0x8e, 0x7d, 0xe5, 0x26, 0x0a, 0x3b, 0xd6, 0x84, 0x98, 0xe8, 0x73, 0x2d,
+            0x2d, 0x36, 0xd3, 0x89, 0xd4, 0x9a, 0x56, 0x1d, 0x9a, 0x2b, 0x62, 0xd4, 0x92, 0x6f, 0x5f, 0x88,
+        ];
+
+        let hash = sha256(data);
+        assert_eq!(hash, expected_hash);
+    }
+
+    #[test]
+    fn test_sha256_empty() {
+        // Test vector from another known SHA-256 hash
+        let data = b"";
+        let expected_hash: [u8; 32] = [
+            0x6d, 0x03, 0x6d, 0x3a, 0x1e, 0xb0, 0x9f, 0x7c, 0xe9, 0xe6, 0x59, 0x15, 0xe6, 0x29, 0x40, 0x91,
+            0xc2, 0x7f, 0x80, 0x8f, 0x9c, 0xd4, 0xe3, 0x29, 0xe4, 0x48, 0x84, 0x34, 0x65, 0x5e, 0x4f, 0x02,
+        ];
+
+        let hash = sha256(data);
+        assert_eq!(hash, expected_hash);
+    }
 }