Safeguarding cryptography

- [Instructor] One of the most powerful ways … to protect data is by using encryption, … Even still, there are threats … that can compromise the security of our data. … Threats include an attack on the encrypted data, … which is an attempt to break the code … to obtain the plain text. … Another threat is having someone obtain your private key … in a public key cryptographic system. … The advanced encryption standard, AES … was adopted as a standard by the U.S government … in the early 2000s … AES can use up to a 256 bit key, … and this considered a strong algorithm … that can resist a brute force attack. … In addition, asymmetric encryption uses a public key … and a private key, which are mathematically related. … The private key should always be kept private, … and the public key is made public for everyone to see. … Because they are mathematically related, … both are needed to encrypt and decrypt text. … For someone to obtain the private key … by using the public key … is computationally infeasible …