This comprehensive guide discusses where to get, how to install, and how to use the various cryptography packages available to enhance the security of your PHP applications.
by Octavia Andreea Anghel
May 2, 2008
n an ideal world, words like cryptography and security wouldn't even exist, but the real world is far from perfect, so software developers have to spend a good deal of time building security into applications. Cryptography is just one piece of the security puzzle, along with SSL/TLS, certificates, digital signatures, and so on. This article explains how to use PHP to implement the most common cryptographic algorithms. In addition to describing PHP's default encryption functions, you'll see how to use a wide variety of cryptographic libraries and packages.
The code examples in this article use the contents of a short text file, textfile.txt, which contains the following plain-text content:
For every difficult and complicated
question there is an answer
that is simple, easily understood,
and wrong. H.L. Mencken
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n an ideal world, words like cryptography and security wouldn't even exist, but the real world is far from perfect, so software developers have to spend a good deal of time building security into applications. Cryptography is just one piece of the security puzzle, along with SSL/TLS, certificates, digital signatures, and so on. This article explains how to use PHP to implement the most common cryptographic algorithms. In addition to describing PHP's default encryption functions, you'll see how to use a wide variety of cryptographic libraries and packages.
