新增: 登陆密码加密处理

app/helpers/aes_crypt_helper.rb

@@ -0,0 +1,45 @@
+module AesCryptHelper
+
+  AES_KEY = EduSetting.get("login_crypt_key") || '59c96c3572ab8cc1'
+
+  def encrypt(plain_text, output_encoding = 'base64')
+
+    # 将字符串密钥和IV转换为16字节的字节数组
+    key = AES_KEY.byteslice(0, 16)
+    iv = AES_KEY.byteslice(0, 16)
+
+    # 创建并设置AES-CBC加密器
+    cipher = OpenSSL::Cipher.new('AES-128-CBC')
+    cipher.encrypt
+    cipher.key = key
+    cipher.iv = iv
+
+    # 加密数据，并添加PKCS7填充
+    encrypted_data = cipher.update(plain_text) + cipher.final
+    # 将加密数据转换为Base64编码
+    Base64.strict_encode64(encrypted_data)
+  end
+  
+  def decrypt(cipher_text, input_encoding = 'base64')
+    # 确保密钥是16字节长
+    key = AES_KEY.byteslice(0, 16) # 如果密钥不足16字节，填充空格；如果超过，截断
+    iv = AES_KEY.byteslice(0, 16)
+    
+    decipher = OpenSSL::Cipher.new('AES-128-CBC')
+    decipher.decrypt
+    decipher.key = key
+    decipher.iv = iv
+    
+    # 根据输入编码解码密文
+    decrypted_data = case input_encoding
+                     when 'base64'
+                       Base64.strict_decode64(cipher_text)
+                     else
+                       cipher_text
+                     end
+    
+    decrypted = decipher.update(decrypted_data) + decipher.final
+    decrypted
+  end
+  
+end