The process of encryption or decryption is generally known as cryptography, and relies on mathematical algorithms.

加密过程或解密过程一般被称作密码术，且依赖于数学算法。

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A mismatch in either the encryption key or key version number causes the decryption process to fail.

加密密匙或密匙版本号的不匹配会导致解密过程失败。

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This approach is transparent to the database itself, the database management system can not feel the existence of encryption and decryption process.

这种方式对于数据库自身来说也是透明的，数据库管理系统也感觉不到加密解密过程的存在。

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