General & Crypto

crypto/src/hash.rs

@@ -0,0 +1,29 @@
+use sha2::Digest;
+
+pub fn sha256(data: &[u8]) -> [u8; 32] {
+    let mut hasher = sha2::Sha256::new();
+    hasher.update(data);
+    let result = hasher.finalize();
+    result.into()
+}
+
+pub fn sha256_double(data: &[u8]) -> [u8; 32] {
+    sha256(&sha256(data))
+}
+
+pub struct Sha256Hasher(sha2::Sha256);
+
+impl Sha256Hasher {
+    pub fn new() -> Self {
+        Self(sha2::Sha256::new())
+    }
+
+    pub fn update(&mut self, data: &[u8]) {
+        self.0.update(data);
+    }
+
+    pub fn finalize(self) -> [u8; 32] {
+        let result = self.0.finalize();
+        result.into()
+    }
+}