diff --git a/encryption/spiral/spiral.go b/encryption/spiral/spiral.go
index ae2fe3f..d42cae7 100644
--- a/encryption/spiral/spiral.go
+++ b/encryption/spiral/spiral.go
@@ -2,13 +2,14 @@
 package spiral
 
 import (
-	"crypto/aes"
+	stdaes "crypto/aes"
 	"crypto/cipher"
 	"errors"
 	"fmt"
 	"strings"
 
 	"archgrid.xyz/ag/toolsbox/encryption"
+	"archgrid.xyz/ag/toolsbox/encryption/aes"
 	"archgrid.xyz/ag/toolsbox/hash/sha512"
 	verifyCode "archgrid.xyz/ag/toolsbox/random/verify_code"
 	"archgrid.xyz/ag/toolsbox/serialize/base64"
@@ -22,34 +23,59 @@ const (
 )
 
 // 根据给定的密钥字符串生成加解密使用的密钥。
-// 与Rust版本兼容：使用SHA512 hex字符串的字节表示。
 func generateKey(key string) []byte {
-	hexStr := sha512.Sha512Hex([]byte(key))
-	// 取hex字符串的第4-36字节（对应Rust版本）
-	return []byte(hexStr[4:36])
+	keyBytes := sha512.Sha512([]byte(key))
+	return keyBytes[4:36]
+}
+
+// 使用原始密钥进行AES-CBC-256加密（不经过二次SHA256处理）
+func encryptWithRawKey(data []byte, key []byte, ivGenerator aes.IVGenerator) ([]byte, error) {
+	block, err := stdaes.NewCipher(key)
+	if err != nil {
+		return nil, fmt.Errorf("创建加密单元失败，%w", err)
+	}
+
+	var key32 [32]byte
+	copy(key32[:], key)
+	iv := ivGenerator(key32)
+
+	plainText := encryption.Padding(data, block.BlockSize(), encryption.PKCS7Padding)
+	cipherText := make([]byte, len(plainText))
+	mode := cipher.NewCBCEncrypter(block, iv[:])
+	mode.CryptBlocks(cipherText, plainText)
+
+	return cipherText, nil
+}
+
+// 使用原始密钥进行AES-CBC-256解密（不经过二次SHA256处理）
+func decryptWithRawKey(data []byte, key []byte, ivGenerator aes.IVGenerator) ([]byte, error) {
+	block, err := stdaes.NewCipher(key)
+	if err != nil {
+		return nil, fmt.Errorf("创建加密单元失败，%w", err)
+	}
+
+	var key32 [32]byte
+	copy(key32[:], key)
+	iv := ivGenerator(key32)
+
+	plainText := make([]byte, len(data))
+	mode := cipher.NewCBCDecrypter(block, iv[:])
+	mode.CryptBlocks(plainText, data)
+
+	return encryption.Unpadding(plainText, encryption.PKCS7Padding), nil
 }
 
 // 对给定的数据进行加密。
 func Encrypt(data string, strength ...Strength) (string, error) {
+	// 为了与Rust版本兼容，固定使用PrefixIVGenerator
+	ivGen := aes.PrefixIVGenerator
 	key := verifyCode.RandStr(20)
 	keyBytes := generateKey(key)
-
-	// 直接使用crypto/aes，避免二次SHA256哈希
-	block, err := aes.NewCipher(keyBytes)
+	// 直接使用keyBytes，不经过aes包的二次SHA256处理
+	cipherData, err := encryptWithRawKey([]byte(data), keyBytes, ivGen)
 	if err != nil {
-		return "", fmt.Errorf("创建加密单元失败，%w", err)
+		return "", fmt.Errorf("加密计算失败，%w", err)
 	}
-
-	// 使用key的前16字节作为IV（与Rust版本PrefixIVGenerator对应）
-	iv := keyBytes[:16]
-
-	// PKCS7 padding
-	plainText := encryption.Padding([]byte(data), block.BlockSize(), encryption.PKCS7Padding)
-
-	cipherData := make([]byte, len(plainText))
-	mode := cipher.NewCBCEncrypter(block, iv)
-	mode.CryptBlocks(cipherData, plainText)
-
 	var result strings.Builder
 	result.WriteString("[")
 	result.WriteString(key)
@@ -59,32 +85,21 @@ func Encrypt(data string, strength ...Strength) (string, error) {
 
 // 对给定的数据进行解密。
 func Decrypt(data string, strength ...Strength) (string, error) {
+	// 为了与Rust版本兼容，固定使用PrefixIVGenerator
+	ivGen := aes.PrefixIVGenerator
 	if message, found := strings.CutPrefix(data, "["); found {
 		if len(message) > 20 {
 			keySeed := message[:20]
-			keyBytes := generateKey(keySeed)
-
+			key := generateKey(keySeed)
 			cipherData, err := base64.FromBase64(message[20:])
 			if err != nil {
 				return "", fmt.Errorf("密文损坏无法解析，%w", err)
 			}
-
-			// 直接使用crypto/aes，避免二次SHA256哈希
-			block, err := aes.NewCipher(keyBytes)
+			// 直接使用key，不经过aes包的二次SHA256处理
+			plainText, err := decryptWithRawKey(cipherData, key, ivGen)
 			if err != nil {
-				return "", fmt.Errorf("创建加密单元失败，%w", err)
+				return "", fmt.Errorf("密文解密计算失败，%w", err)
 			}
-
-			// 使用key的前16字节作为IV（与Rust版本对应）
-			iv := keyBytes[:16]
-
-			plainText := make([]byte, len(cipherData))
-			mode := cipher.NewCBCDecrypter(block, iv)
-			mode.CryptBlocks(plainText, cipherData)
-
-			// PKCS7 unpadding
-			plainText = encryption.Unpadding(plainText, encryption.PKCS7Padding)
-
 			return string(plainText), nil
 		}
 		return "", errors.New("密文缺损，无法完成解密。")
diff --git a/encryption/spiral/spiral_test.go b/encryption/spiral/spiral_test.go
new file mode 100644
index 0000000..4540530
--- /dev/null
+++ b/encryption/spiral/spiral_test.go
@@ -0,0 +1,15 @@
+package spiral
+
+import "testing"
+
+func TestDecode(t *testing.T) {
+	var origin = "[q3XvNHL7oTfVpHmZ2bOAnyVY/Q1Bm2dqsI8hfVA74R9CQb4vyksTD+Y9l4TT62o="
+	decoded, err := Decrypt(origin)
+	if err != nil {
+		t.Fatalf("Decode failed: %v", err)
+	}
+	expected := "TmFRS0w6BIrAPA1Raj"
+	if decoded != expected {
+		t.Fatalf("Decoded value mismatch. Got: %s, Expected: %s", decoded, expected)
+	}
+}