From 47078aea8ce1bfc28c9d56e94300edeb43cb6d2a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BE=90=E6=B6=9B?= <midnite@outlook.com>
Date: Tue, 27 Jan 2026 09:11:51 +0800
Subject: [PATCH] =?UTF-8?q?fix(decrypt):=20=E4=BF=AE=E5=A4=8D=E8=A7=A3?=
 =?UTF-8?q?=E5=AF=86=E8=BF=87=E7=A8=8B=E4=B8=AD=E7=9A=84IV=E7=94=9F?=
 =?UTF-8?q?=E6=88=90=E9=80=BB=E8=BE=91?=
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---
 src/encryption/spiral.rs | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/encryption/spiral.rs b/src/encryption/spiral.rs
index 25080cb..b898e18 100644
--- a/src/encryption/spiral.rs
+++ b/src/encryption/spiral.rs
@@ -45,10 +45,16 @@ pub fn decrypt(data: String) -> Result<String, SpiralCipherError> {
     let data = data[1..].to_string();
     let key_seed = data[0..20].to_string();
     let key = gen_key(&key_seed);
-    let iv: [u8; 16] = key[0..16].try_into().unwrap();
-    let decryptor = AesDecryptor::new(&key.into(), &iv.into());
+
     let encrypted_data = crate::serialize::from_base64_str(&data[20..])
         .map_err(|_| SpiralCipherError::CorruptedCipherData)?;
+
+    // 使用key的前16字节作为IV（与Go版本PrefixIVGenerator对应）
+    let iv: [u8; 16] = key[0..16]
+        .try_into()
+        .map_err(|_| SpiralCipherError::CorruptedCipherData)?;
+
+    let decryptor = AesDecryptor::new(&key.into(), &iv.into());
     let decrypted_data = decryptor
         .decrypt_padded_vec_mut::<cipher::block_padding::Pkcs7>(encrypted_data.as_slice())
         .map_err(|e| {