CryptoWithEXSLT

Crypto Functions (with EXSLT and libgcrypt)

libexslt defines a set of crypto functions using the namespace:

ns crypto = "http://exslt.org/crypto"; 

These were added in 2004, but I cannot find suitable documentation for them.

Building libxslt with libgcrypt-devel

To have libxslt expose the crypto function, the library "libgcrypt-devel" must be present when libxslt is configured. "libgcrypt" alone is not sufficient, since it does not have the header files needed for libxslt to compile.

Under macosx, this library is available in the "Mac Ports" collection and can be installed using the command "port install libgcrypt-devel".

Once libgcrypt-devel is installed, run the libxslt "configure" script and rebuild using "make".

Functions

crypto:md4

Computes the md4 hash of a string and returns it as a hex string:

var $hex = crypto:md4($data); 

crypto:md5

Computes the md5 hash of a string and returns it as a hex string:

var $hex = crypto:md5($data); 

crypto:sha1

Computes the sha1 hash of a string and returns it as a hex string:

var $hex = crypto:sha1($data); 

crypto:rc4_encrypt

Encrypts a string and returns it as a hex string:

var $hex = crypto:rc4_encrypt($key, $data); 

crypto:rc4_decrypt

Decrypts a string and returns it as hex:

var $data = crypto:rc4_decrypt($key, $hex);