feat: v0.5.0, supports ChaCha20/Poly1305

src/crypto_simple.rs

@@ -0,0 +1,31 @@
+use rust_util::XResult;
+
+use crate::crypto_cryptor::Cryptor;
+
+pub fn try_decrypt_with_salt(crypto: Cryptor, key: &[u8], nonce: &[u8], salt: &[u8], message: &[u8]) -> XResult<Vec<u8>> {
+    let new_nonce = build_salted_nonce(nonce, salt);
+    if let Ok(decrypted) = decrypt(crypto, key, &new_nonce, message) {
+        return Ok(decrypted);
+    }
+    decrypt(crypto, key, nonce, message)
+}
+
+pub fn decrypt(crypto: Cryptor, key: &[u8], nonce: &[u8], message: &[u8]) -> XResult<Vec<u8>> {
+    crypto.decryptor(key, nonce)?.decrypt(message)
+}
+
+pub fn encrypt_with_salt(crypto: Cryptor, key: &[u8], nonce: &[u8], salt: &[u8], message: &[u8]) -> XResult<Vec<u8>> {
+    let new_nonce = build_salted_nonce(nonce, salt);
+    encrypt(crypto, key, &new_nonce, message)
+}
+
+pub fn encrypt(crypto: Cryptor, key: &[u8], nonce: &[u8], message: &[u8]) -> XResult<Vec<u8>> {
+    Ok(crypto.encryptor(key, nonce)?.encrypt(message))
+}
+
+fn build_salted_nonce(nonce: &[u8], salt: &[u8]) -> Vec<u8> {
+    let mut nonce_with_salt = nonce.to_vec();
+    nonce_with_salt.extend_from_slice(salt);
+    let input = hex::decode(sha256::digest(nonce_with_salt)).unwrap();
+    input[0..12].to_vec()
+}