[xmlsec] Get Buffer to Hash and Sign

Aleksey Sanin aleksey at aleksey.com
Wed Feb 4 09:37:22 PST 2004

Nothing is impossible, it's only software :) If you want to do hash and 
for particular algorithms by yourself then you just need to create 
custom transforms
for these algorithms and register them with the xmlsec.

Take a look at the xmlsec tutotrial:


and check the xmlsec-openssl, xmlsec-nss, etc. libraries for more examples.


>Then I would like to do the following:
>- Get in a buffer the data after the thansformation in order to do the
>hash (one buffer for each reference)
>- I'll do the hash and the signing on my own
>- then I would like to insert the signature information and the keyinfo
>in the document
>Is it possible to do something similar to this? I can't manage to find
>the correct functions, it may be because I'm new with this library.
>Can you help me, please?

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