GPU (CUDA powered) supprt for OpenSSL


Depends on:
Nvidia Driver (CUDA compatible, tested on 195.36.24)
CUDA Toolkit
CUDA SDK


##############################
OPENSSL_ROOT/crypto/engine/eng_all.c
at the end of function "void ENGINE_load_builtin_engines(void)" (starts at line 62)
add 

#----------[ ADD ]----------

ENGINE_load_gpu();

#----------[ /ADD ]----------


##############################
OPENSSL_ROOT/crypto/engine/Makefile
add "eng_gpu.c" to LIBSRC and "eng_gpu.o eng_gpu.cu.o" to LIBOBJ

#----------[ CHANGE ]----------

LIBSRC= eng_err.c eng_lib.c eng_list.c eng_init.c eng_ctrl.c \
	eng_table.c eng_pkey.c eng_fat.c eng_all.c \
	tb_rsa.c tb_dsa.c tb_ecdsa.c tb_dh.c tb_ecdh.c tb_rand.c tb_store.c \
	tb_cipher.c tb_digest.c \
	eng_openssl.c eng_cnf.c eng_dyn.c eng_cryptodev.c eng_padlock.c
LIBOBJ= eng_err.o eng_lib.o eng_list.o eng_init.o eng_ctrl.o \
	eng_table.o eng_pkey.o eng_fat.o eng_all.o \
	tb_rsa.o tb_dsa.o tb_ecdsa.o tb_dh.o tb_ecdh.o tb_rand.o tb_store.o \
	tb_cipher.o tb_digest.o \
	eng_openssl.o eng_cnf.o eng_dyn.o eng_cryptodev.o eng_padlock.o

#----------[ TO ]----------

LIBSRC= eng_err.c eng_lib.c eng_list.c eng_init.c eng_ctrl.c \
	eng_table.c eng_pkey.c eng_fat.c eng_all.c \
	tb_rsa.c tb_dsa.c tb_ecdsa.c tb_dh.c tb_ecdh.c tb_rand.c tb_store.c \
	tb_cipher.c tb_digest.c \
	eng_openssl.c eng_cnf.c eng_dyn.c eng_cryptodev.c eng_padlock.c eng_gpu.c
LIBOBJ= eng_err.o eng_lib.o eng_list.o eng_init.o eng_ctrl.o \
	eng_table.o eng_pkey.o eng_fat.o eng_all.o \
	tb_rsa.o tb_dsa.o tb_ecdsa.o tb_dh.o tb_ecdh.o tb_rand.o tb_store.o \
	tb_cipher.o tb_digest.o \
	eng_openssl.o eng_cnf.o eng_dyn.o eng_cryptodev.o eng_padlock.o eng_gpu.o eng_gpu.cu.o

#----------[ /CHANGE ]----------

Add new target. Note that "-I/opt/cuda/sdk/common/inc" should 
point to NVIDIAs SDK installation.
NOTE! line 'nvcc -c ....' must begin with <TAB>
NOTE! 'cuda' MUST be before 'lib'

#----------[ CHANGE ]----------

all:	lib

#----------[ TO ]----------

all: cuda lib

cuda:
    nvcc -c -o eng_gpu.cu.o eng_gpu.cu -I/opt/cuda/sdk/common/inc -DUNIX -O3 --host-compilation C

#----------[ /CHANGE ]----------


##############################
Copy eng_gpu.c and eng_gpu.cu files to OPENSSL_ROOT/crypto/engine


##############################
OPENSSL_ROOT/crypto/evp/bio_enc.c
NOTE! ENC_BLOCK_SIZE must be same as according values in eng_gpu.cu 
file: NUM_BLOCKS, NUM_THREADS and ROUNDS_IN_THREAD

#----------[ CHANGE ]----------

#define ENC_BLOCK_SIZE	(1024*4)

#----------[ TO ]----------

#define ENC_BLOCK_SIZE	(360 * 512 * 10 * 16)

#----------[ /CHANGE ]----------


##############################
Final steps

goto OPENSSL_ROOT directory

For testing author suggests make non-system install, therefore is needed to 
define new install directory and needed libraries
NOTE: change --openssldir value as you need, openssl will be installed there

$ ./config -L/usr/local/cuda/lib -lcuda -lcudart  --openssldir=~/gpu/openssl/install
$ make depend
$ make
$ make install

# example run
~/gpu/openssl/install/bin/openssl aes-128-ecb -bufsize 29491200 -engine gpu -in generated.dat -out data.gpu -k abcd -nosalt