print question - character representation

[Ajay]

hi!

i am calculating a digest of some data (using hmac) and printing it to a
cookie. the problem is the hash may contain special characters. when these
are printed they get converted to \<number> representation.
later when i receive the cookie i recalculate the hmac and do a comparison
which returns false because of the conversion when writing to a cookie

q - how do i stop the conversion from happening? if i cant then how can i
convert the hmac i recalculate on receiving the cookie to the same
representation as the one printed

thanks

cheers

----------------------------------------------------------------
This message was sent using IMP, the Internet Messaging Program.

[Brian Gough]

Ajay <ab******@mail.usyd.edu.au> writes:

i am calculating a digest of some data (using hmac) and printing it to a
cookie. the problem is the hash may contain special characters. when these
are printed they get converted to \<number> representation.
later when i receive the cookie i recalculate the hmac and do a comparison
which returns false because of the conversion when writing to a cookie
q - how do i stop the conversion from happening?

Use the hexdigest() method instead of digest() to avoid non-printable
characters. See the hmac library documentation for details.

--
Brian Gough

Network Theory Ltd,
Publishing the Python Manuals --- http://www.network-theory.co.uk/python/

[Michael Foord]

Ajay <ab******@mail.usyd.edu.au> wrote in message news:<ma**************************************@pyt hon.org>...

hi!

i am calculating a digest of some data (using hmac) and printing it to a
cookie. the problem is the hash may contain special characters. when these
are printed they get converted to \<number> representation.
later when i receive the cookie i recalculate the hmac and do a comparison
which returns false because of the conversion when writing to a cookie

q - how do i stop the conversion from happening? if i cant then how can i
convert the hmac i recalculate on receiving the cookie to the same
representation as the one printed

thanks

cheers

One way is to use a binary to ascii conversion - like the binascii module.

Regards,

Fuzzy

http://www.voidspace.org.uk/atlantib...thonutils.html