Information, Computer and Network Security Terms Glossary and Dictionary

40-bit encryption

 

40 bit encryption indicates that the size of the key used to encrypt the message is 40 bits. 40-bit SSL encryption standard was used in symmetric encryption in early IE and Netscape browsers and other Internet and wireless communications. Unfortunately, 40-bit encryption has proved too easy to decipher or crack in practice. Now, 128-bit encryption (3DES or TDES) have replaced the 40-bit encryption keys.

Related Terms

40-bit encryption, 56-bit encryption, 64-bit encryption, 64-bit keys