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