NetCitadel and Software Defined Security
It’s been an exciting couple of weeks in the security realm, with a number of innovative startups appearing. That’s refreshing because recently most “innovation” in the security space has been something involving a new way of marketing a signature or reputation based system – and that’s just a bit rubbish, and not a little tiresome. Most […]
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The post NetCitadel and Software Defined Security appeared first on Packet Pushers Podcast and was written by Neil Anderson.
Symmetric and Asymmetric Algorithms – Basic Differences
Symmetric uses only one key for both encryption and decryption. Sender and receiver share the same shared secret to transfer data securely. Algorithms include DES, 3DES, AES, IDEA, RC2/4/5/6, and Blowfish. Also referred to as "secret key" encryption.
DES - 56bit keys
3DES - 112bit and 168bit keys
AES - 128bit, 192bit, and 256bit keys
IDEA (International Data Encryption Alogrithm) - 128bit keys
RC2 - 40bit and 64bit keys
RC4 - 1bit to 256bit keys
RC5 - 0bit to 2040bit keys
RC6 - 128bit, 192bit, and 256bit keys
Blowfish - 32bit to 448bit keys
Asymmetric uses one key for encryption and another key for decryption referred to as public key infrastructure encryption. Key lengths generally ranging from 512 to 4096bits.
Example of asymmetric encryption RSA,EIGamal, Eliptical Curves, and Diffie Hellman