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changed to keep it simple

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Larry Bugbee 2014-03-08 12:16:58 -08:00 committed by Steffen Jaeckel
parent 3f9144c9a7
commit a543e0caa6
1 changed files with 13 additions and 46 deletions
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59
demos/demo_dynamic.py
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@ -13,28 +13,29 @@
dynamic languages.
This instance uses Python's ctypes and requires a single
.dylib linking together LTC and one or more math libraries.
Building a single .dylib is needed because LTC wants a
fairly tight relationship between itself and the mathlib.
(ctypes can load multiple .dylibs, but it does not support
this level of coupling between those independent libraries.)
.dylib linking together LTC and a math library. Building
a single .dylib is needed because LTC wants a fairly tight
relationship between itself and the mathlib. (ctypes can
load multiple .dylibs, but it does not support this level
of tight coupling between otherwise independent libraries.)
My .dylib was created on OSX with the following steps:
1- compile LTC to a .a static lib:
CFLAGS="-DLTM_DESC -DUSE_LTM -DTFM_DESC -DUSE_TFM \
-I/usr/local/include" make
CFLAGS="-DLTM_DESC -DUSE_LTM" make
2- link LTC, LTM and TFM into a single .dylib:
ar2dylib_with_and tomcrypt tommath tfm
where ar2dylib_with_and is a shell script that combines
the .a with .dylibs for LTM and TFM
2- link LTC and LTM into a single .dylib:
ar2dylib_with tomcrypt tommath
where ar2dylib_with is a shell script that combines
the LTC .a with the LTM .dylib
Reminder: you don't need to bind in a math library unless
you are going to use LTC functions that depend
on a mathlib. For example, public key crypto
needs a mathlib; hashing and symmetric encryption
does not.
do not.
This code was written for Python 2.7.
Larry Bugbee
March 2014
@ -138,40 +139,6 @@ if 1:
print ' %-25s %d' % (name, value)
#---------------------------------------------------------------
# init the selected math package, change to another mathlib,
# and change back to the first mathlib
if 1:
print '\n init the selected math package, change, and change again'
# show ltm_desc
ptr = c_int.in_dll(LTC, 'ltm_desc')
print ' ltm_desc: ', hex(ptr.value)
# show tfm_desc
ptr = c_int.in_dll(LTC, 'tfm_desc')
print ' tfm_desc: ', hex(ptr.value)
# let's see the initial value of ltc_mp
ptr = c_int.in_dll(LTC, 'ltc_mp')
print ' initial ptr:', hex(ptr.value)
# init LTM and show ltc_mp
LTC.init_LTM()
ptr = c_int.in_dll(LTC, 'ltc_mp')
print ' ptr to LTM: ', hex(ptr.value)
# init TFM and show ltc_mp
LTC.init_TFM()
ptr = c_int.in_dll(LTC, 'ltc_mp')
print ' ptr to TFM: ', hex(ptr.value)
# now change back to LTM
LTC.init_LTM()
ptr = c_int.in_dll(LTC, 'ltc_mp')
print ' ptr to LTM: ', hex(ptr.value)
#---------------------------------------------------------------
#---------------------------------------------------------------
# ctypes getting a list of this build's supported algorithms