RSA 2048-bit encryption is the standard. The time to break the code for encryption is currently so long, this is the standard for most systems. All banking, email systems, etc use 2048-bit as the primary encryption method.
Now comes the new computers called quantum computers. The processing times on these systems are a fraction of traditional computers. Experts predict RSA 2048-bit encryption may be broken in 8 hours or less.
Scientists have found a new encryption method which would not be able to be broken, but it is far becoming the standard.
For more on Quantum computers and encryption, see the MIT Technology Review article at: https://www.technologyreview.com/s/613596/how-a-quantum-computer-could-break-2048-bit-rsa-encryption-in-8-hours
I Teach Accounting Information Systems 