Method for storing and using key based on computer feature code

The invention relates to a method for storing and using a key based on a computer feature code. A plaintext key encrypted based on the computer feature codes is adopted in an encryption process, and aciphertext file is generated for storage; and a decryption process is used for decrypting the ciphertext file to obtain the plaintext key when application software is started through a proxy or a system hook technology, and the plaintext key is set in an application software running environment for use by the application software. According to the method for storing and using the key based on thecomputer feature code provided by the invention, sensitive information can be prevented from being stolen to the maximum degree due to key leakage. 本发明涉及种基于计算机特征码的密钥存储及使用的方法，加密过程采用基于计算机特征码加密的明文密钥，并生成密文文件进行存储；解密过程通过代理或者系统hook技术在应用软件启动时解密密文文件获得明文密钥，并将明文密钥设置到应用软件运行环境中，供应用软件使用。本发明能够最大程度防止密钥泄露导致敏感信息被窃取。