feat: v0.5.3, fix compress issue, supports env TINY_ENCRYPT_DEFAULT_ALGORITHM

src/crypto_cryptor.rs

@@ -3,7 +3,7 @@ use chacha20_poly1305_stream::{ChaCha20Poly1305StreamDecryptor, ChaCha20Poly1305
 use rust_util::{opt_result, simple_error, XResult};
 use zeroize::Zeroize;
 
-use crate::consts;
+use crate::{consts, util_env};
 
 #[derive(Debug, Copy, Clone)]
 pub enum Cryptor {
@@ -152,6 +152,20 @@ impl Decryptor for ChaCha20Poly1305Decryptor {
     }
 }
 
+#[allow(clippy::redundant_closure)]
+pub fn get_cryptor_by_encryption_algorithm(encryption_algorithm: &Option<String>) -> XResult<Cryptor> {
+    let encryption_algorithm = encryption_algorithm.as_deref()
+        .or_else(|| util_env::get_default_encryption_algorithm())
+        .unwrap_or(consts::TINY_ENC_AES_GCM)
+        .to_lowercase();
+    let cryptor = match encryption_algorithm.as_str() {
+        "aes" | "aes/gcm" => Cryptor::Aes256Gcm,
+        "chacha20" | "chacha20/poly1305" => Cryptor::ChaCha20Poly1305,
+        _ => return simple_error!("Unknown encryption algorithm: {}, should be AES or CHACHA20", encryption_algorithm),
+    };
+    Ok(cryptor)
+}
+
 #[test]
 fn test_cryptor() {
     let key = [0u8; 32];