refactor: move base64 to shared utils package

um_crypto/kuwo/Cargo.toml

@@ -4,7 +4,7 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-base64 = "0.22.1"
-itertools = "0.13.0"
 anyhow = "1.0.86"
+itertools = "0.13.0"
 thiserror = "1.0.63"
+umc_utils = { path = "../utils" }

um_crypto/kuwo/src/des/mod.rs

@@ -1,22 +1,14 @@
 use anyhow::Result;
-use base64::alphabet;
-use base64::engine::{DecodePaddingMode, GeneralPurpose as Base64Engine, GeneralPurposeConfig};
-use base64::prelude::*;
 
 mod constants;
 mod core;
 mod helper;
 use core::{KuwoDes, Mode};
-
-/// Don't add padding when encoding, and require no padding when decoding.
-const B64: Base64Engine = Base64Engine::new(
-    &alphabet::STANDARD,
-    GeneralPurposeConfig::new().with_decode_padding_mode(DecodePaddingMode::Indifferent),
-);
+use umc_utils::base64;
 
 /// Decrypt string content
 pub fn decrypt_ksing(data: &str, key: &[u8; 8]) -> Result<String> {
-    let mut decoded = B64.decode(data)?;
+    let mut decoded = base64::decode(data)?;
 
     let des = KuwoDes::new(key, Mode::Decrypt);
     des.transform(&mut decoded[..])?;
@@ -35,7 +27,7 @@ pub fn encrypt_ksing<T: AsRef<[u8]>>(data: T, key: &[u8; 8]) -> Result<String> {
 
     let des = KuwoDes::new(key, Mode::Encrypt);
     des.transform(&mut data[..])?;
-    Ok(B64.encode(data))
+    Ok(base64::encode(data))
 }
 
 pub fn decode_ekey(data: &str, key: &[u8; 8]) -> Result<String> {