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* imported implementation of ABC-v2.
ABC CIPHER. C REFERENCE IMPLEMENTATION WITH PERFORMANCE TESTS
1. PROJECT STRUCTURE
Folders and files in main project tree are organized as follows.
README This file
Makefile Makefile for GNU make utility
ecrypt-portable.h ECRYPT portable C default macros
ecrypt-config.h ECRYPT macros for integer types
ecrypt-machine.h ECRYPT platform-specific macros
ecrypt-sync.h ECRYPT interface declarations
ecrypt-sync.c ECRYPT standard routine implementation
abc.h Header declarations of ABC constants
abc.c Core ABC routines
main.c Various tests of ABC functionality
2. BUILDING PROJECT FOR GNU GCC
Executable for ABC performance test (abc) is created by executing
'make all' (or alternatively just 'make') command. Cleanup of object files
can be performed by 'make clean'. Rebuild of everything is done by
'make rebuild' command.
3. VARYING IMPLEMENTATION PARAMETERS
Implementation memory consumption (and therefore speed) can be varied at
compile time by ECRYPT_VARIANT parameter, specified in Makefile.
Specifically, ECRYPT_VARIANT controls optimization window size and cycle
unroll depth in ABC core code. Possible values for ECRYPT_VARIANT are
defined in the table below.
ECRYPT_VARIANT Optimization window size Cycle unroll depth
0 1 (no optimization) 1
1 2 4
2 2 8
3 4 4
4 4 8
5 4 16
6 8 4
7 8 8
8 8 16
9 12-12-8 16
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