Hi,

I'm implementing a subset of the SET protocol and since I'm still a
student : I'm not a crypto-expert.  So, I searched the internet to find
some good and free cryptography 
software.  As far as I've seen, cryptolib seems to fullfill my needs but
I'd like to know whether I can build my application on top of it or
not.  Here are my requirements :

  - RSA, OAEP DES and CDMF encryption/decryption
  - SHA-1 digest computation
  - Basic X.509 Certificate Management (Disk storage, CRL look-up, ...)

I'd just like to know which of the previous tasks can be done using the
OpenSSL.
Parsing/Writing of DER bitstream our of some data structure would be
highly appreciate : does OpenSSL provides routines for that?  Otherwise,
where can I find a free library to do so?

Best regards,

-- Xavier
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