December 2004
Intermediate to advanced
448 pages
16h 40m
English
Content preview from Firewalls
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16.2 Selecting cryptographic algorithms through
encryption
This part of the chapter provides a list of recommendations for
choosing among the various cryptographic operations available in
implementing a firewall privacy and authentication solution.
3
These cryptographic operations are as follows:
■ Data Encryption Standard (DES)
■ 3DES
■ Advanced Encryption Standard (AES)
■ RC4
■ Secure Hash Algorithm-1 (SHA-1) and Message Digest-5 (MD5)
■ Asymmetric Key Algorithms (RSA)
16.2.1 Data Encryption Standard
Although DES has enjoyed widespread popularity for many years,
it is no longer considered secure enough by today’s standards.
DES should generally not be used ...
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