![]() Even AES-128, the lowest one, requires at least 20 random symbols. Generally, a master password cannot be used directly as an encryption key because it does not contain enough entropy. So protecting the encryption key is one of the most important things for password managers. Instead, they try to obtain the encryption key. Modern encryption algorithms are designed so well that most, if not all, hackers will not try to attack the algorithm itself. Check the analysis in appendix to see how password managers failed to protect data well. Therefore, password managers using AES-256 encryption cannot ensure that they are the most secure tools. Timothy Quinn wrote that it should just be called “industry-standard encryption.”Īs we already know, being encrypted does not necessarily mean being well protected. "Military-Grade Encryption" is more of a marketing phrase. Some password managers claim to use "Military-Grade Encryption", which usually refers to the use of AES-256. As the highest level algorithm, AES-256 is widely used in financial, military equipment and services, and also used by many password managers. Among them, AES-256 is the most secure one and impossible to be cracked theoretically by today's technology. It comes in three flavors: 128-bit, 192-bit, and 256-bit. The encryption key must be true random and be protected well.Īt present, the most popular symmetric encryption algorithm is the Advanced Encryption Standard(AES).It is easy to recover plain from cipher with key, but very hard without key.The algorithm cannot be kept in secret.
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