GPU610/NullPointerException
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Contents
NullPointerException
Team Members
Progress
Assignment 1
Philip Aziz
- Philip Aziz - Calculating Prime Numbers
Only the inner loop would be possible to Parellelize but would still require to validate 1 prime number at a time due to need to validate against previous prime numbers.
while (count < n){
flag = 1;
i = 1;
checkKey = int((sqrt (prime))+1);
//checks prime numbers for divisible values
while(primes[i] < checkKey and flag){
if ((prime % primes[i])==0){
flag = 0;
}
i++;
}
if(flag){
primes[count] = prime;
count++;
}
prime +=2;
}
| n | Elapsed Time |
|---|---|
| 10,000 | 0 |
| 100,000 | 1 |
| 1,000,000 | 8 |
| 10,000,000 | 220 |
| 100,000,000 | 6200 |
Saad Mohammad
Project
Encrypts and decrypts images. Original project file can be found at: Image-Encrypt Github
Profiling Resource
Profiled the application using:
SYSTEM
- Matrix
IMAGE
- JPEG Format
- 324KB
- 1598 x 982
CUSTOM MAKEFILE
# Makefile for Assignment 1
# Saad Mohammad
#
GCC_VERSION = 4.7.1
PREFIX = /usr/local/gcc/${GCC_VERSION}/bin/
CC = ${PREFIX}gcc
CPP = ${PREFIX}g++
image_encrypt: main.o encryptjpeg.o accessjpeg.o aesencrypt.o
$(CPP) -pg -ow1 main.o encryptjpeg.o accessjpeg.o aesencrypt.o -o image_encrypt
rm *.o
chmod +x+x+x image_encrypt
main.o: main.cpp
$(CPP) -c -O2 -g -pg -std=c++0x main.cpp
encryptjpeg.o: encryptjpeg.cpp
$(CPP) -c -O2 -g -pg -std=c++0x encryptjpeg.cpp
accessjpeg.o: accessjpeg.cpp
$(CPP) -c -O2 -g -pg -std=c++0x accessjpeg.cpp
aesencrypt.o: aesencrypt.cpp
$(CPP) -c -O2 -g -pg -std=c++0x aesencrypt.cpp
clean:
rm -f image_encrypt *.o
Profiling Results
Encryption:
Each sample counts as 0.01 seconds.
% cumulative self self total time seconds seconds calls us/call us/call name 53.85 0.14 0.14 5979744 0.02 0.02 aesEncrypt::ffmul(unsigned char, unsigned char) 30.77 0.22 0.08 207630 0.39 0.39 aesEncrypt::subBytes(char*) 11.54 0.25 0.03 186867 0.16 0.91 aesEncrypt::mixColumns(char*) 3.85 0.26 0.01 20763 0.48 12.52 aesEncrypt::encryptBlock(char*) 0.00 0.26 0.00 207630 0.00 0.00 aesEncrypt::shiftRows(char*) 0.00 0.26 0.00 20764 0.00 0.00 accessJpeg::hasMore() 0.00 0.26 0.00 20763 0.00 0.00 accessJpeg::accessBlock() 0.00 0.26 0.00 40 0.00 0.00 aesEncrypt::sboxify(unsigned char) 0.00 0.26 0.00 10 0.00 0.00 aesEncrypt::roundify(unsigned char) 0.00 0.26 0.00 1 0.00 0.00 _GLOBAL__sub_I__ZN10accessJpegC2Ev 0.00 0.26 0.00 1 0.00 0.00 _GLOBAL__sub_I__ZN11encryptJpeg7processEc 0.00 0.26 0.00 1 0.00 0.00 _GLOBAL__sub_I_main 0.00 0.26 0.00 1 0.00 0.00 accessJpeg::readInFile(char*) 0.00 0.26 0.00 1 0.00 0.00 accessJpeg::jumpToStart() 0.00 0.26 0.00 1 0.00 0.00 accessJpeg::writeOutFile(char*) 0.00 0.26 0.00 1 0.00 0.00 accessJpeg::~accessJpeg() 0.00 0.26 0.00 1 0.00 0.00 aesEncrypt::setTextKey(std::string) 0.00 0.26 0.00 1 0.00 0.00 aesEncrypt::expandKey() 0.00 0.26 0.00 1 0.00 0.00 aesEncrypt::~aesEncrypt()
Decryption:
Each sample counts as 0.01 seconds.
% cumulative self self total time seconds seconds calls us/call us/call name 58.97 0.23 0.23 11959488 0.02 0.02 aesEncrypt::ffmul(unsigned char, unsigned char) 25.64 0.33 0.10 207630 0.48 0.48 aesEncrypt::invSubBytes(char*) 7.69 0.36 0.03 186867 0.16 1.39 aesEncrypt::invMixColumns(char*) 5.13 0.38 0.02 20763 0.96 18.78 aesEncrypt::decryptBlock(char*) 2.56 0.39 0.01 207630 0.05 0.05 aesEncrypt::invShiftRows(char*) 0.00 0.39 0.00 20764 0.00 0.00 accessJpeg::hasMore() 0.00 0.39 0.00 20763 0.00 0.00 accessJpeg::accessBlock() 0.00 0.39 0.00 40 0.00 0.00 aesEncrypt::sboxify(unsigned char) 0.00 0.39 0.00 10 0.00 0.00 aesEncrypt::roundify(unsigned char) 0.00 0.39 0.00 1 0.00 0.00 _GLOBAL__sub_I__ZN10accessJpegC2Ev 0.00 0.39 0.00 1 0.00 0.00 _GLOBAL__sub_I__ZN11encryptJpeg7processEc 0.00 0.39 0.00 1 0.00 0.00 _GLOBAL__sub_I_main 0.00 0.39 0.00 1 0.00 0.00 accessJpeg::readInFile(char*) 0.00 0.39 0.00 1 0.00 0.00 accessJpeg::jumpToStart() 0.00 0.39 0.00 1 0.00 0.00 accessJpeg::writeOutFile(char*) 0.00 0.39 0.00 1 0.00 0.00 accessJpeg::~accessJpeg() 0.00 0.39 0.00 1 0.00 0.00 aesEncrypt::setTextKey(std::string) 0.00 0.39 0.00 1 0.00 0.00 aesEncrypt::expandKey() 0.00 0.39 0.00 1 0.00 0.00 aesEncrypt::~aesEncrypt()
Assignment 2
Changes
The following diff file shows the changes made to parallelize the code:
diff --git a/aesencrypt.cpp b/aesencrypt.cpp
deleted file mode 100755
index ab189d7..0000000
--- a/aesencrypt.cpp
+++ /dev/null
@@ -1,344 +0,0 @@
-/********************************************************
- Winter 2013
- GPU610 Assignment
- Author: Saad Mohammad, Phillip Aziz, Natesh Mayuranathan
- Team: NullPointerException
-
- Original Project: <https://github.com/markwatson/Image-Encrypt>
- Commit: c7b4ee3852a5fe3c9b80171a1e621f514f10ac33
- Original Author: Mark Watson
- ********************************************************/
-
-#include <string>
-#include <stdexcept>
-#include "aesencrypt.h"
-
-aesEncrypt::aesEncrypt()
-{
- // set values
- Nk = 4; // this is in words
- Nb = BLOCK_SIZE; // !! important, this is in bytes, not words
- Nr = 10; // extrapolated fom table for aes standard
- fullkey = NULL;
- expandedkey = NULL;
-}
-
-aesEncrypt::~aesEncrypt()
-{
- if (fullkey != NULL)
- delete[] fullkey;
- if (expandedkey != NULL)
- delete[] expandedkey;
-}
-
-
-bool aesEncrypt::encryptBlock(char* block)
-{
- xorRoundKey(block, expandedkey);
- for(int cnt = 1;cnt <= (Nr-1);cnt++)
- {
- subBytes(block);
- shiftRows(block);
- mixColumns(block);
- xorRoundKey(block, expandedkey + (cnt * Nb));
- }
- subBytes(block);
- shiftRows(block);
- xorRoundKey(block, expandedkey + (Nr * Nb));
-
- return true; // could error check in future
-}
-
-bool aesEncrypt::decryptBlock(char* block)
-{
- xorRoundKey(block, expandedkey + (Nr * Nb));
-
- for(int cnt = Nr-1; cnt > 0;cnt--)
- {
- invShiftRows(block);
- invSubBytes(block);
- xorRoundKey(block, expandedkey + cnt * Nb);
- invMixColumns(block);
- }
-
- invShiftRows(block);
- invSubBytes(block);
- xorRoundKey(block, expandedkey);
-
- return true;
-}
-
-void aesEncrypt::setTextKey(std::string key)
-{
- // set the key
- fullkey = new char [Nk * 4];
-
- // go through the text key copying till full key is full
- int pos = 0; // start grabbing from string at 0
- for (int cnt = 0;cnt < BLOCK_SIZE;cnt++)
- {
- try
- {
- fullkey[cnt] = key.at(pos);
- }
- catch (std::out_of_range&)
- {
- // recover by repeating key
- pos = pos - (key.length()+1);
- cnt--;
- }
-
- pos++; // incrmemnt string position
- }
-
- expandKey();
-}
-
-void aesEncrypt::expandKey()
-{
- // limit
- int limit = (Nb/4)*(Nr+1);
- // grab some fresh memory for the expanded key
- expandedkey = new char [4*limit];
- // main counter
- int cnt;
- // temp loaction
- unsigned char temp[4];
-
- // set first key
- for(cnt = 0;cnt < Nk;cnt++)
- {
- for (int n = 0; n < 4; n++)
- {
- expandedkey[cnt*4+n] = fullkey[cnt*4+n];
- }
- }
- // continue where we left off with other keys
- for (cnt = Nk;cnt < limit;cnt++)
- {
- // copy key into temp location
- for(int n=0;n<4;n++)
- {
- temp[n] = expandedkey[(cnt-1)*4+n];
- }
- if ((cnt % Nk) == 0)
- {
- // rotate and then sboxify
- rotate_left(temp);
- for (int n = 0;n<4;n++)
- temp[n] = sboxify(temp[n]);
- // round
- temp[0] ^= roundify(cnt/Nk);
- }
- // xor temp
- for (int n = 0; n < 4; n++)
- {
- expandedkey[cnt*4+n] = expandedkey[(cnt-Nk)*4+n] ^ temp[n];
- }
- }
- // rearrange
- unsigned char* temp2;
- temp2 = new unsigned char [Nb];
- for (int all = 0; all <= Nr;all++)
- {
- // copy into temp
- for (int i = 0; i < Nb; i++)
- {
- temp2[i] = expandedkey[Nb*all+i];
- }
- for (cnt = 0;cnt < Nb/4;cnt++)
- {
- for (int i = 0; i < Nb/4;i++)
- {
- expandedkey[Nb*all+(cnt+i*4)] = temp2[i+cnt*4];
- }
- }
- }
- delete[] temp2; // cleanup
-}
-
-void aesEncrypt::subBytes(char * state)
-{
- for (int cnt = 0;cnt < Nb;cnt++)
- {
- state[cnt] = sboxify(state[cnt]);
- }
-}
-
-void aesEncrypt::invSubBytes(char * state)
-{
- for (int cnt = 0;cnt < Nb;cnt++)
- {
- state[cnt] = invsboxify(state[cnt]);
- }
-}
-
-void aesEncrypt::invShiftRows(char * state)
-{
- for (int row = 1; row <4; row++)
- {
- // see below
- for (int n = 1; n < (row+1); n++)
- {
- rotate_right((unsigned char*) state + (row*4));
- }
- }
-}
-
-void aesEncrypt::invMixColumns(char * state)
-{
- unsigned char temp[4];
-
- for (int col = 0; col < (Nb/4); col++)
- {
- for (int n = 0; n < 4; n++)
- {
- temp[n] = state[n*4+col];
- }
- for (int cnt = 0; cnt < 4; cnt++)
- {
- state[cnt*4+col] = ffmul(0x0e, temp[cnt]) ^
- ffmul(0x0b, temp[(cnt+1) % 4]) ^
- ffmul(0x0d, temp[(cnt+2) % 4]) ^
- ffmul(0x09, temp[(cnt+3) % 4]);
- }
- }
-}
-
-void aesEncrypt::shiftRows(char * state)
-{
- for (int row = 1; row < 4;row++)
- {
- // shift it over needed amount of times
- // 0 for row 1, 1, for row 2, etc.
- for (int n = 1; n < (row+1);n++)
- {
- // pass in a pointer to the row
- rotate_left((unsigned char*) state + (row*4));
- }
- }
-}
-
-void aesEncrypt::mixColumns(char * state)
-{
- unsigned char temp[4];
-
- for (int col = 0; col < (Nb/4); col++)
- {
- for (int n = 0; n < 4; n++)
- {
- temp[n] = state[n*4+col]; //state[col*4+n];
- }
- for (int cnt = 0; cnt < 4; cnt++)
- {
- state[cnt*4+col] = ffmul(0x02, temp[cnt]) ^
- ffmul(0x03, temp[(cnt+1) % 4]) ^
- temp[(cnt+2) % 4] ^
- temp[(cnt+3) % 4];
-
- }
- }
-}
-
-void aesEncrypt::xorRoundKey(char * state, char * key)
-{
- for (int cnt = 0;cnt < Nb;cnt++)
- {
- state[cnt] ^= key[cnt];
- }
-}
-
-
-// this function multiplies two values
-// ints are passed in to deal with overflow
-unsigned char aesEncrypt::ffmul(unsigned char x, unsigned char y) {
- if (x == 0 && y == 0) return 0; // special case...
- // bitsets
- std::bitset<8> p (0);
- std::bitset<8> a (x);
- std::bitset<8> b (y);
- // bool
- bool left_a;
- // run
- for(int cnt = 0; cnt < 8;cnt++)
- {
- if (b[0]) p ^= a;
- left_a = a[7];
- a<<=1;
- if (left_a) a^=0x1b;
- b>>=1;
- }
- return (unsigned char) p.to_ulong();
-}
-
-unsigned char aesEncrypt::sboxify(unsigned char val)
-{
- //printf("\n sbox: %i \n", val);
- unsigned char sbox[256] = {
- //0 1 2 3 4 5 6 7 8 9 A B C D E F
- 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76, //0
- 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, //1
- 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, //2
- 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, //3
- 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, //4
- 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, //5
- 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, //6
- 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, //7
- 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, //8
- 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, //9
- 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, //A
- 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, //B
- 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, //C
- 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, //D
- 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, //E
- 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16 //F
- };
- return sbox[val];
-}
-
-unsigned char aesEncrypt::invsboxify(unsigned char val)
-{
- unsigned char sbox[256] = {
- //0 1 2 3 4 5 6 7 8 9 A B C D E F
- 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb,
- 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb,
- 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e,
- 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25,
- 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92,
- 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84,
- 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06,
- 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b,
- 0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73,
- 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e,
- 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b,
- 0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4,
- 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f,
- 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef,
- 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61,
- 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d
- };
- return sbox[val];
-}
-
-unsigned char aesEncrypt::roundify(unsigned char index)
-{
- unsigned char round[255] = {
- 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a,
- 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39,
- 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a,
- 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8,
- 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef,
- 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc,
- 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b,
- 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3,
- 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94,
- 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20,
- 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35,
- 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f,
- 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04,
- 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63,
- 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd,
- 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb
- };
- return round[index];
-}
diff --git a/aesencrypt.cu b/aesencrypt.cu
index ab189d7..4c89090 100755
--- a/aesencrypt.cu
+++ b/aesencrypt.cu
@@ -1,17 +1,23 @@
/********************************************************
- Winter 2013
- GPU610 Assignment
- Author: Saad Mohammad, Phillip Aziz, Natesh Mayuranathan
- Team: NullPointerException
-
- Original Project: <https://github.com/markwatson/Image-Encrypt>
- Commit: c7b4ee3852a5fe3c9b80171a1e621f514f10ac33
- Original Author: Mark Watson
- ********************************************************/
+Winter 2013
+GPU610 Assignment
+Author: Saad Mohammad, Phillip Aziz, Natesh Mayuranathan
+Team: NullPointerException
+
+Original Project: <https://github.com/markwatson/Image-Encrypt>
+Commit: c7b4ee3852a5fe3c9b80171a1e621f514f10ac33
+Original Author: Mark Watson
+********************************************************/
#include <string>
#include <stdexcept>
-#include "aesencrypt.h"
+#include <cstdlib>
+#include <iostream>
+#include <device_launch_parameters.h>
+#include <cuda.h>
+#include <cuda_runtime.h>
+#include "aesencrypt.cuh"
+using namespace std;
aesEncrypt::aesEncrypt()
{
@@ -21,6 +27,38 @@ aesEncrypt::aesEncrypt()
Nr = 10; // extrapolated fom table for aes standard
fullkey = NULL;
expandedkey = NULL;
+
+ initalizeDeviceMemory();
+}
+
+void aesEncrypt::initalizeDeviceMemory(){
+ unsigned char sbox[256] = {
+ //0 1 2 3 4 5 6 7 8 9 A B C D E F
+ 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76, //0
+ 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, //1
+ 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, //2
+ 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, //3
+ 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, //4
+ 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, //5
+ 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, //6
+ 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, //7
+ 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, //8
+ 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, //9
+ 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, //A
+ 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, //B
+ 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, //C
+ 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, //D
+ 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, //E
+ 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16 //F
+ };
+ //unsigned char* deviceBoxify;
+ cudaMalloc((void**)&deviceBoxify, sizeof(char) * 256);
+ cudaMemcpy(deviceBoxify, sbox, sizeof( char) * 256, cudaMemcpyHostToDevice);
+}
+
+void aesEncrypt::cleanDeviceMemory(){
+ cudaFree(deviceBoxify);
+ cudaFree(deviceExpandedKey);
}
aesEncrypt::~aesEncrypt()
@@ -29,28 +67,113 @@ aesEncrypt::~aesEncrypt()
delete[] fullkey;
if (expandedkey != NULL)
delete[] expandedkey;
+
+ cleanDeviceMemory();
+}
+
+__global__ void xorRoundKeyGlobal(char * state, char * key)
+{
+ int idx = threadIdx.x;
+ state[idx] = (int)((int)state[idx] ^ (int)key[idx]);
+}
+
+char* aesEncrypt::copyChar(char* source, int size){
+
+
+ return NULL;
+}
+
+__global__ void subBytesCuda(char * state, unsigned char * sbBox)
+{
+ int idx = threadIdx.x;
+ int n = static_cast<unsigned char>(state[idx]);
+ state[idx] = sbBox[n];
}
+__global__ void shiftRowsCuda(char* state)
+{
+ int row = threadIdx.x + 1;
+ int j = row *4;
+ unsigned char *tmp = (unsigned char*) state +j;
+
+ for(int i=1; i < (row+1); i++)
+ {
+ unsigned char trimmings;
+ trimmings = tmp[0];
+ tmp[0] = tmp[1];
+ tmp[1] = tmp[2];
+ tmp[2] = tmp[3];
+ tmp[3] = trimmings;
+
+ }
+}
bool aesEncrypt::encryptBlock(char* block)
{
- xorRoundKey(block, expandedkey);
+ //Initalize device memory
+ char* deviceBlock;
+ char* deviceTempChar;
+ cudaMalloc((void**)&deviceBlock, sizeof(char) * (BLOCK_SIZE));
+
+ //Copy memory to device
+ cudaMemcpy(deviceBlock, block,sizeof( char) * (BLOCK_SIZE), cudaMemcpyHostToDevice);
+
+ //CUDA CALL for: xorRoundKey(block, expandedkey)
+ xorRoundKeyGlobal<<<1, Nb>>>(deviceBlock, deviceExpandedKey);
+ cudaDeviceSynchronize();
+
for(int cnt = 1;cnt <= (Nr-1);cnt++)
{
- subBytes(block);
- shiftRows(block);
- mixColumns(block);
- xorRoundKey(block, expandedkey + (cnt * Nb));
+ //CUDA CALL for: subBytes(block))
+ subBytesCuda<<<1,Nb>>>(deviceBlock, deviceBoxify);
+ cudaDeviceSynchronize();
+
+ //CUDA CALL for: shiftRows(block);
+ shiftRowsCuda<<<1,4>>>(deviceBlock);
+ cudaDeviceSynchronize();
+
+ //mixColumns(block); // Disabled
+
+ //CUDA CALL for: xorRoundKey(block, expandedkey + (cnt * Nb)))
+ cudaMalloc((void**)&deviceTempChar, sizeof(char)*(Nb));
+ cudaMemcpy(deviceTempChar, expandedkey + (cnt * Nb), sizeof(char) * Nb, cudaMemcpyHostToDevice);
+
+ xorRoundKeyGlobal<<<1, Nb>>>(deviceBlock, deviceTempChar); //xorRoundKey(block, expandedkey);
+ cudaDeviceSynchronize();
+
+ cudaFree(deviceTempChar);
}
- subBytes(block);
- shiftRows(block);
- xorRoundKey(block, expandedkey + (Nr * Nb));
+ //CUDA CALL for: subBytes(block))
+ subBytesCuda<<<1,Nb>>>(deviceBlock, deviceBoxify);
+ cudaDeviceSynchronize();
+
+ //CUDA CALL for: shiftRows(block);
+ shiftRowsCuda<<<1,4>>>(deviceBlock);
+ cudaDeviceSynchronize();
+
+ //CUDA CALL for: xorRoundKey(block, expandedkey + (Nr * Nb))
+ cudaMalloc((void**)&deviceTempChar, sizeof(char)*(Nb+1));
+ cudaMemcpy(deviceTempChar, expandedkey + (Nr * Nb), sizeof(char) * (Nb +1), cudaMemcpyHostToDevice);
+
+ xorRoundKeyGlobal<<<1, Nb>>>(deviceBlock, deviceTempChar); //xorRoundKey(block, expandedkey); ////////////////////////////////////////////////////////IMPORTANT
+ cudaDeviceSynchronize();
+
+
+ //END_FUNCTION
+ cudaMemcpy(block, deviceBlock, sizeof(char)* (BLOCK_SIZE), cudaMemcpyDeviceToHost);
+
+ //Free memory
+ cudaFree(deviceBlock);
+ cudaFree(deviceTempChar);
+
return true; // could error check in future
}
+
bool aesEncrypt::decryptBlock(char* block)
{
+
xorRoundKey(block, expandedkey + (Nr * Nb));
for(int cnt = Nr-1; cnt > 0;cnt--)
@@ -58,13 +181,13 @@ bool aesEncrypt::decryptBlock(char* block)
invShiftRows(block);
invSubBytes(block);
xorRoundKey(block, expandedkey + cnt * Nb);
- invMixColumns(block);
+ //invMixColumns(block); // Disabled
}
invShiftRows(block);
invSubBytes(block);
xorRoundKey(block, expandedkey);
-
+
return true;
}
@@ -72,7 +195,7 @@ void aesEncrypt::setTextKey(std::string key)
{
// set the key
fullkey = new char [Nk * 4];
-
+
// go through the text key copying till full key is full
int pos = 0; // start grabbing from string at 0
for (int cnt = 0;cnt < BLOCK_SIZE;cnt++)
@@ -90,8 +213,12 @@ void aesEncrypt::setTextKey(std::string key)
pos++; // incrmemnt string position
}
-
+
expandKey();
+
+ //Save host expanded key to device
+ cudaMalloc((void**)&deviceExpandedKey, sizeof(char) * (strlen(expandedkey) +1));
+ cudaMemcpy(deviceExpandedKey, expandedkey, sizeof(char) * (strlen(expandedkey) +1), cudaMemcpyHostToDevice);
}
void aesEncrypt::expandKey()
@@ -154,6 +281,7 @@ void aesEncrypt::expandKey()
}
}
}
+
delete[] temp2; // cleanup
}
@@ -198,9 +326,9 @@ void aesEncrypt::invMixColumns(char * state)
for (int cnt = 0; cnt < 4; cnt++)
{
state[cnt*4+col] = ffmul(0x0e, temp[cnt]) ^
- ffmul(0x0b, temp[(cnt+1) % 4]) ^
- ffmul(0x0d, temp[(cnt+2) % 4]) ^
- ffmul(0x09, temp[(cnt+3) % 4]);
+ ffmul(0x0b, temp[(cnt+1) % 4]) ^
+ ffmul(0x0d, temp[(cnt+2) % 4]) ^
+ ffmul(0x09, temp[(cnt+3) % 4]);
}
}
}
@@ -232,9 +360,9 @@ void aesEncrypt::mixColumns(char * state)
for (int cnt = 0; cnt < 4; cnt++)
{
state[cnt*4+col] = ffmul(0x02, temp[cnt]) ^
- ffmul(0x03, temp[(cnt+1) % 4]) ^
- temp[(cnt+2) % 4] ^
- temp[(cnt+3) % 4];
+ ffmul(0x03, temp[(cnt+1) % 4]) ^
+ temp[(cnt+2) % 4] ^
+ temp[(cnt+3) % 4];
}
}
@@ -242,13 +370,20 @@ void aesEncrypt::mixColumns(char * state)
void aesEncrypt::xorRoundKey(char * state, char * key)
{
+ //cout << "EQ: \t\t" ;
for (int cnt = 0;cnt < Nb;cnt++)
{
+ //cout << (int) state[cnt] << " ^ "
+ //cout << (int) key[cnt] << " ";//"= ";
state[cnt] ^= key[cnt];
+ //cout << (int) state[cnt] << endl;
}
+
+ //cout << endl;
}
+
// this function multiplies two values
// ints are passed in to deal with overflow
unsigned char aesEncrypt::ffmul(unsigned char x, unsigned char y) {
@@ -275,23 +410,23 @@ unsigned char aesEncrypt::sboxify(unsigned char val)
{
//printf("\n sbox: %i \n", val);
unsigned char sbox[256] = {
- //0 1 2 3 4 5 6 7 8 9 A B C D E F
- 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76, //0
- 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, //1
- 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, //2
- 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, //3
- 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, //4
- 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, //5
- 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, //6
- 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, //7
- 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, //8
- 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, //9
- 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, //A
- 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, //B
- 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, //C
- 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, //D
- 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, //E
- 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16 //F
+ //0 1 2 3 4 5 6 7 8 9 A B C D E F
+ 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76, //0
+ 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, //1
+ 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, //2
+ 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, //3
+ 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, //4
+ 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, //5
+ 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, //6
+ 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, //7
+ 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, //8
+ 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, //9
+ 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, //A
+ 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, //B
+ 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, //C
+ 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, //D
+ 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, //E
+ 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16 //F
};
return sbox[val];
}
@@ -299,23 +434,23 @@ unsigned char aesEncrypt::sboxify(unsigned char val)
unsigned char aesEncrypt::invsboxify(unsigned char val)
{
unsigned char sbox[256] = {
- //0 1 2 3 4 5 6 7 8 9 A B C D E F
- 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb,
- 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb,
- 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e,
- 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25,
- 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92,
- 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84,
- 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06,
- 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b,
- 0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73,
- 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e,
- 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b,
- 0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4,
- 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f,
- 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef,
- 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61,
- 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d
+ //0 1 2 3 4 5 6 7 8 9 A B C D E F
+ 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb,
+ 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb,
+ 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e,
+ 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25,
+ 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92,
+ 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84,
+ 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06,
+ 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b,
+ 0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73,
+ 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e,
+ 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b,
+ 0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4,
+ 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f,
+ 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef,
+ 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61,
+ 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d
};
return sbox[val];
}
@@ -323,22 +458,22 @@ unsigned char aesEncrypt::invsboxify(unsigned char val)
unsigned char aesEncrypt::roundify(unsigned char index)
{
unsigned char round[255] = {
- 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a,
- 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39,
- 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a,
- 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8,
- 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef,
- 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc,
- 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b,
- 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3,
- 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94,
- 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20,
- 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35,
- 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f,
- 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04,
- 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63,
- 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd,
- 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb
+ 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a,
+ 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39,
+ 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a,
+ 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8,
+ 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef,
+ 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc,
+ 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b,
+ 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3,
+ 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94,
+ 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20,
+ 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35,
+ 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f,
+ 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04,
+ 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63,
+ 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd,
+ 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb
};
return round[index];
}
diff --git a/aesencrypt.cuh b/aesencrypt.cuh
index 7d7afc0..7de2276 100755
--- a/aesencrypt.cuh
+++ b/aesencrypt.cuh
@@ -24,6 +24,16 @@ private:
std::string textkey;
char* expandedkey;
char* fullkey;
+
+ //Device memory
+ unsigned char* deviceBoxify;
+ char* deviceExpandedKey;
+
+
+ char* copyChar(char* source, int size); //by me
+ void initalizeDeviceMemory(); //by me
+ void cleanDeviceMemory(); //by me
+
public:
aesEncrypt();
~aesEncrypt();
@@ -45,7 +55,6 @@ public:
unsigned char roundify(unsigned char index);
unsigned char ffmul(unsigned char, unsigned char);
-
// assumes a word
void rotate_left(unsigned char * tmp) {
unsigned char trimmings;
diff --git a/aesencrypt.h b/aesencrypt.h
deleted file mode 100755
index 7d7afc0..0000000
--- a/aesencrypt.h
+++ /dev/null
@@ -1,84 +0,0 @@
-/********************************************************
- Winter 2013
- GPU610 Assignment
- Author: Saad Mohammad, Phillip Aziz, Natesh Mayuranathan
- Team: NullPointerException
-
- Original Project: <https://github.com/markwatson/Image-Encrypt>
- Commit: c7b4ee3852a5fe3c9b80171a1e621f514f10ac33
- Original Author: Mark Watson
- ********************************************************/
-
-#ifndef AESENCRYPT_H
-#define AESENCRYPT_H
-#define BLOCK_SIZE 16
-
-#include <string>
-#include <bitset>
-#include "stdio.h"
-
-class aesEncrypt
-{
-private:
- int Nk, Nb, Nr; // lengths.
- std::string textkey;
- char* expandedkey;
- char* fullkey;
-public:
- aesEncrypt();
- ~aesEncrypt();
- bool encryptBlock(char*);
- bool decryptBlock(char*);
- void setTextKey(std::string);
- void expandKey();
-
- void subBytes(char *);
- void invSubBytes(char *);
- void shiftRows(char *);
- void invShiftRows(char *);
- void mixColumns(char *);
- void invMixColumns(char *);
- void xorRoundKey(char *, char *);
-
- unsigned char sboxify(unsigned char val);
- unsigned char invsboxify(unsigned char val);
- unsigned char roundify(unsigned char index);
-
- unsigned char ffmul(unsigned char, unsigned char);
-
- // assumes a word
- void rotate_left(unsigned char * tmp) {
- unsigned char trimmings;
- trimmings = tmp[0];
- tmp[0] = tmp[1];
- tmp[1] = tmp[2];
- tmp[2] = tmp[3];
- tmp[3] = trimmings;
- }
- void rotate_right(unsigned char * tmp) {
- unsigned char trimmings;
- trimmings = tmp[3];
- tmp[3] = tmp[2];
- tmp[2] = tmp[1];
- tmp[1] = tmp[0];
- tmp[0] = trimmings;
- }
- unsigned char rcon(unsigned char in) {
- unsigned char c=1;
- if(in == 0)
- return 0;
- while(in != 1) {
- unsigned char b;
- b = c & 0x80;
- c <<= 1;
- if(b == 0x80) {
- c ^= 0x1b;
- }
- in--;
- }
- return c;
- }
-
-};
-
-#endif // AESENCRYPT_H
diff --git a/encryptjpeg.cpp b/encryptjpeg.cpp
index 7e1710b..a722b0d 100755
--- a/encryptjpeg.cpp
+++ b/encryptjpeg.cpp
@@ -12,7 +12,7 @@
#include <iostream>
#include <iomanip>
#include "accessjpeg.h"
-#include "aesencrypt.h"
+#include "aesencrypt.cuh"
#include "encryptjpeg.h"
bool encryptJpeg::process(char action)
diff --git a/encryptjpeg.h b/encryptjpeg.h
index ed97895..f412ec0 100755
--- a/encryptjpeg.h
+++ b/encryptjpeg.h
@@ -14,7 +14,7 @@
#include <string>
#include "accessjpeg.h"
-#include "aesencrypt.h"
+#include "aesencrypt.cuh"
class encryptJpeg
{
diff --git a/main.cpp b/main.cpp
deleted file mode 100755
index 4b08144..0000000
--- a/main.cpp
+++ /dev/null
@@ -1,77 +0,0 @@
-/********************************************************
- Winter 2013
- GPU610 Assignment
- Author: Saad Mohammad, Phillip Aziz, Natesh Mayuranathan
- Team: NullPointerException
-
- Original Project: <https://github.com/markwatson/Image-Encrypt>
- Commit: c7b4ee3852a5fe3c9b80171a1e621f514f10ac33
- Original Author: Mark Watson
- ********************************************************/
-
-#include <iostream>
-#include <fstream>
-#include <string>
-#include <ctime>
-#include "encryptjpeg.h"
-#include "aesencrypt.h"
-using namespace std;
-
-int main(int argc, char *argv[])
-{
- // validate command line arguments
- if (argc != 4 || (argv[1][1] != 'e' && argv[1][1] != 'd'))
- {
- cout << "Invalid command line arguments." << endl
- << "Please something like the following:" << endl
- << "\t To encrypt: \t image_encrypt -e <input> <output>\n"
- << "\t To decrypt: \t image_encrypt -d <input> <output>\n";
- return 0;
- }
-
- // run encryption
- try
- {
- clock_t cb, ce;
-
- // variables
- encryptJpeg enc;
- string key;
-
- // set files
- enc.setInFile(argv[2]);
- enc.setOutFile(argv[3]);
-
- // set key
- cout << "Please enter a key: ";
- //cin >> key;
- key = "gpu610";
- //key = "123456789012345678";
- cout << endl << "Default key will be used: " << key << endl;
- enc.setPlainKey(key);
-
- // do the actual encryption
- cb = clock();
-
- enc.process(argv[1][1]);
- // stop timer
- ce = clock();
- cout << "Process took: " <<
- double(ce - cb)/CLOCKS_PER_SEC << " secs" << endl;
- }
- catch(encryptJpeg::invalidInFile)
- {
- cout << "That input file is not valid" << endl;
- }
- catch(encryptJpeg::invalidOutFile)
- {
- cout << "Could not open output file for writing" << endl;
- }
- catch(encryptJpeg::invalidAction)
- {
- cout << "The program encountered an internal error..." << endl;
- }
-
-
- return 0;
-}
Assignment 3
diff --git a/accessjpeg.cpp b/accessjpeg.cpp
index f967465..2bfb7eb 100644
--- a/accessjpeg.cpp
+++ b/accessjpeg.cpp
@@ -1,7 +1,7 @@
/********************************************************
Winter 2013
GPU610 Assignment
- Author: Saad Mohammad, Phillip Aziz, Natesh Mayuranathan
+ Author: Saad Mohammad
Team: NullPointerException
Original Project: <https://github.com/markwatson/Image-Encrypt>
@@ -93,3 +93,13 @@ char * accessJpeg::accessBlock()
cursor += BLOCK_SIZE;
return ret;
}
+
+int accessJpeg::getNumberOfBlocks(){
+ return ((size - cursor)/BLOCK_SIZE) + 1;
+}
+
+void accessJpeg::goToStart()
+{
+ cursor += 0;
+ jumpToStart();
+}
diff --git a/accessjpeg.h b/accessjpeg.h
index 5293bd9..fe87d0d 100644
--- a/accessjpeg.h
+++ b/accessjpeg.h
@@ -1,7 +1,7 @@
/********************************************************
Winter 2013
GPU610 Assignment
- Author: Saad Mohammad, Phillip Aziz, Natesh Mayuranathan
+ Author: Saad Mohammad
Team: NullPointerException
Original Project: <https://github.com/markwatson/Image-Encrypt>
@@ -29,6 +29,8 @@ public:
bool jumpToStart();
char * accessBlock();
bool hasMore();
+ int getNumberOfBlocks();
+ void goToStart();
};
#endif // ACCESSJPEG_H
diff --git a/aesencrypt.cu b/aesencrypt.cu
index 4c89090..fc4393b 100644
--- a/aesencrypt.cu
+++ b/aesencrypt.cu
@@ -1,7 +1,7 @@
/********************************************************
Winter 2013
GPU610 Assignment
-Author: Saad Mohammad, Phillip Aziz, Natesh Mayuranathan
+Author: Saad Mohammad
Team: NullPointerException
Original Project: <https://github.com/markwatson/Image-Encrypt>
@@ -19,6 +19,8 @@ Original Author: Mark Watson
#include "aesencrypt.cuh"
using namespace std;
+const int NTPB = 1024; //number of threads per block
+
aesEncrypt::aesEncrypt()
{
// set values
@@ -71,105 +73,135 @@ aesEncrypt::~aesEncrypt()
cleanDeviceMemory();
}
-__global__ void xorRoundKeyGlobal(char * state, char * key)
-{
- int idx = threadIdx.x;
- state[idx] = (int)((int)state[idx] ^ (int)key[idx]);
-}
-
-char* aesEncrypt::copyChar(char* source, int size){
+__global__ void encryptKernel(char **state, char *key, unsigned char *sbBox, int Nb, int Nr, int size){
+ int position = 0;
+ int idx = blockIdx.x * blockDim.x + threadIdx.x;
+ if(idx < size){
+ char* block = state[idx];
+
+ //CALL for: xorRoundKey(block, expandedkey)
+ for(int i=0;i<Nb;i++){
+ block[i] = (int)((int)block[i] ^ (int)key[i + position]);
+ }
+
+ for(int cnt=1; cnt <= (Nr-1); cnt++){
+ //CALL for: subBytes(block))
+ for(int i=0;i<Nb;i++){
+ int n = static_cast<unsigned char>(block[i]);
+ block[i] = sbBox[n];
+ }
- return NULL;
-}
+ //CALL for: shiftRows(block);
+ for(int i=0;i<4;i++){
+ int row = i + 1;
+ int j = row *4;
+ unsigned char *tmp = (unsigned char*) block +j;
+
+ for(int i=1; i < (row+1); i++)
+ {
+ unsigned char trimmings;
+ trimmings = tmp[0];
+ tmp[0] = tmp[1];
+ tmp[1] = tmp[2];
+ tmp[2] = tmp[3];
+ tmp[3] = trimmings;
+ }
+ }
-__global__ void subBytesCuda(char * state, unsigned char * sbBox)
-{
- int idx = threadIdx.x;
- int n = static_cast<unsigned char>(state[idx]);
- state[idx] = sbBox[n];
-}
+ //CALL for: xorRoundKey(block, expandedkey)
+ position = cnt * Nb;
+ for(int i=0;i<Nb;i++){
+ block[i] = (int)((int)block[i] ^ (int)key[i + position]);
+ }
-__global__ void shiftRowsCuda(char* state)
-{
- int row = threadIdx.x + 1;
- int j = row *4;
- unsigned char *tmp = (unsigned char*) state +j;
+ position = 0;
+ }
- for(int i=1; i < (row+1); i++)
- {
- unsigned char trimmings;
- trimmings = tmp[0];
- tmp[0] = tmp[1];
- tmp[1] = tmp[2];
- tmp[2] = tmp[3];
- tmp[3] = trimmings;
-
- }
-}
+ //CALL for: subBytes(block))
+ for(int i=0;i<Nb;i++){
+ int n = static_cast<unsigned char>(block[i]);
+ block[i] = sbBox[n];
+ }
-bool aesEncrypt::encryptBlock(char* block)
-{
- //Initalize device memory
- char* deviceBlock;
- char* deviceTempChar;
- cudaMalloc((void**)&deviceBlock, sizeof(char) * (BLOCK_SIZE));
-
- //Copy memory to device
- cudaMemcpy(deviceBlock, block,sizeof( char) * (BLOCK_SIZE), cudaMemcpyHostToDevice);
+ //CALL for: shiftRows(block);
+ for(int i=0;i<4;i++){
+ int row = i + 1;
+ int j = row *4;
+ unsigned char *tmp = (unsigned char*) block +j;
- //CUDA CALL for: xorRoundKey(block, expandedkey)
- xorRoundKeyGlobal<<<1, Nb>>>(deviceBlock, deviceExpandedKey);
- cudaDeviceSynchronize();
+ for(int i=1; i < (row+1); i++)
+ {
+ unsigned char trimmings;
+ trimmings = tmp[0];
+ tmp[0] = tmp[1];
+ tmp[1] = tmp[2];
+ tmp[2] = tmp[3];
+ tmp[3] = trimmings;
+ }
+ }
- for(int cnt = 1;cnt <= (Nr-1);cnt++)
- {
- //CUDA CALL for: subBytes(block))
- subBytesCuda<<<1,Nb>>>(deviceBlock, deviceBoxify);
- cudaDeviceSynchronize();
-
- //CUDA CALL for: shiftRows(block);
- shiftRowsCuda<<<1,4>>>(deviceBlock);
- cudaDeviceSynchronize();
-
- //mixColumns(block); // Disabled
-
- //CUDA CALL for: xorRoundKey(block, expandedkey + (cnt * Nb)))
- cudaMalloc((void**)&deviceTempChar, sizeof(char)*(Nb));
- cudaMemcpy(deviceTempChar, expandedkey + (cnt * Nb), sizeof(char) * Nb, cudaMemcpyHostToDevice);
+ //CALL for: xorRoundKey(block, expandedkey)
+ position = Nr * Nb;
+ for(int i=0;i<Nb;i++){
+ block[i] = (int)((int)block[i] ^ (int)key[i + position]);
+ }
+ }
+}
- xorRoundKeyGlobal<<<1, Nb>>>(deviceBlock, deviceTempChar); //xorRoundKey(block, expandedkey);
- cudaDeviceSynchronize();
-
- cudaFree(deviceTempChar);
+/*
+ * Assigns the location of eachBlock into the 2D pointer (block)
+ */
+__global__ void copyToBlocks(char** block, char* eachBlock, int index){
+ char *b = eachBlock;
+ block[index] = b;
+}
+
+/*
+ * Returns the value of block[index] into eachBlock
+ */
+__global__ void copyFromBlocks(char** block, char* eachBlock, int index){
+ for(int i=0; i < BLOCK_SIZE; i++){
+ eachBlock[i] = block[index][i];
}
- //CUDA CALL for: subBytes(block))
- subBytesCuda<<<1,Nb>>>(deviceBlock, deviceBoxify);
- cudaDeviceSynchronize();
+}
- //CUDA CALL for: shiftRows(block);
- shiftRowsCuda<<<1,4>>>(deviceBlock);
- cudaDeviceSynchronize();
+void aesEncrypt::encryptBlock(char** blocks, int size)
+{
+ int NBLKS = (size + NTPB - 1) / NTPB;
- //CUDA CALL for: xorRoundKey(block, expandedkey + (Nr * Nb))
- cudaMalloc((void**)&deviceTempChar, sizeof(char)*(Nb+1));
- cudaMemcpy(deviceTempChar, expandedkey + (Nr * Nb), sizeof(char) * (Nb +1), cudaMemcpyHostToDevice);
+ //Initalize device memory
+ char** deviceBlock;
+ cudaMalloc((void**)&deviceBlock, size * sizeof(char*));
- xorRoundKeyGlobal<<<1, Nb>>>(deviceBlock, deviceTempChar); //xorRoundKey(block, expandedkey); ////////////////////////////////////////////////////////IMPORTANT
- cudaDeviceSynchronize();
+ //Copy host block to device block
+ for(int i=0; i < size; i++){
+ char* eachBlock;
+ cudaMalloc((void**)&eachBlock, BLOCK_SIZE * sizeof(char));
+ cudaMemcpy(eachBlock, blocks[i] ,sizeof(char) * (BLOCK_SIZE), cudaMemcpyHostToDevice);
+ copyToBlocks<<<1,1>>>(deviceBlock, eachBlock, i);
+ }
- //END_FUNCTION
- cudaMemcpy(block, deviceBlock, sizeof(char)* (BLOCK_SIZE), cudaMemcpyDeviceToHost);
-
- //Free memory
- cudaFree(deviceBlock);
- cudaFree(deviceTempChar);
+ //Encrypt blocks in parallel
+ encryptKernel<<<NBLKS, NTPB>>>(deviceBlock, deviceExpandedKey, deviceBoxify, Nb, Nr, size);
+ //Copy back to host block
+ for(int i=0; i < size; i++){
+ char *hostBlock = new char [BLOCK_SIZE];
+ char* retBlock;
- return true; // could error check in future
-}
+ cudaMalloc((void**)&retBlock, BLOCK_SIZE * sizeof(char));
+ copyFromBlocks<<<1,1>>>(deviceBlock, retBlock, i);
+ cudaMemcpy(hostBlock, retBlock ,sizeof(char) * (BLOCK_SIZE), cudaMemcpyDeviceToHost);
+
+ blocks[i] = hostBlock;
+
+ cudaFree(retBlock); //Clean from memory
+ }
+ cudaFree(deviceBlock); //Clean from memory
+}
bool aesEncrypt::decryptBlock(char* block)
{
@@ -181,7 +213,6 @@ bool aesEncrypt::decryptBlock(char* block)
invShiftRows(block);
invSubBytes(block);
xorRoundKey(block, expandedkey + cnt * Nb);
- //invMixColumns(block); // Disabled
}
invShiftRows(block);
@@ -215,10 +246,7 @@ void aesEncrypt::setTextKey(std::string key)
}
expandKey();
-
- //Save host expanded key to device
- cudaMalloc((void**)&deviceExpandedKey, sizeof(char) * (strlen(expandedkey) +1));
- cudaMemcpy(deviceExpandedKey, expandedkey, sizeof(char) * (strlen(expandedkey) +1), cudaMemcpyHostToDevice);
+
}
void aesEncrypt::expandKey()
@@ -283,6 +311,10 @@ void aesEncrypt::expandKey()
}
delete[] temp2; // cleanup
+
+ //Save host expanded key to device
+ cudaMalloc((void**)&deviceExpandedKey, sizeof(char) * (4 * limit));
+ cudaMemcpy(deviceExpandedKey, expandedkey, sizeof(char) * (4 * limit), cudaMemcpyHostToDevice);
}
void aesEncrypt::subBytes(char * state)
@@ -370,13 +402,9 @@ void aesEncrypt::mixColumns(char * state)
void aesEncrypt::xorRoundKey(char * state, char * key)
{
- //cout << "EQ: \t\t" ;
for (int cnt = 0;cnt < Nb;cnt++)
{
- //cout << (int) state[cnt] << " ^ "
- //cout << (int) key[cnt] << " ";//"= ";
state[cnt] ^= key[cnt];
- //cout << (int) state[cnt] << endl;
}
//cout << endl;
diff --git a/aesencrypt.cuh b/aesencrypt.cuh
index 7de2276..d340dcb 100644
--- a/aesencrypt.cuh
+++ b/aesencrypt.cuh
@@ -1,7 +1,7 @@
/********************************************************
Winter 2013
GPU610 Assignment
- Author: Saad Mohammad, Phillip Aziz, Natesh Mayuranathan
+ Author: Saad Mohammad
Team: NullPointerException
Original Project: <https://github.com/markwatson/Image-Encrypt>
@@ -11,10 +11,10 @@
#ifndef AESENCRYPT_H
#define AESENCRYPT_H
-#define BLOCK_SIZE 16
#include <string>
#include <bitset>
+#include "accessjpeg.h"
#include "stdio.h"
class aesEncrypt
@@ -37,7 +37,7 @@ private:
public:
aesEncrypt();
~aesEncrypt();
- bool encryptBlock(char*);
+ void encryptBlock(char**, int);
bool decryptBlock(char*);
void setTextKey(std::string);
void expandKey();
diff --git a/encryptjpeg.cpp b/encryptjpeg.cpp
index a722b0d..2692aa5 100644
--- a/encryptjpeg.cpp
+++ b/encryptjpeg.cpp
@@ -1,7 +1,7 @@
/********************************************************
Winter 2013
GPU610 Assignment
- Author: Saad Mohammad, Phillip Aziz, Natesh Mayuranathan
+ Author: Saad Mohammad
Team: NullPointerException
Original Project: <https://github.com/markwatson/Image-Encrypt>
@@ -14,6 +14,8 @@
#include "accessjpeg.h"
#include "aesencrypt.cuh"
#include "encryptjpeg.h"
+#include "cuda_runtime.h"
+using namespace std;
bool encryptJpeg::process(char action)
{
@@ -31,26 +33,45 @@ bool encryptJpeg::process(char action)
// set the key
encrypter.setTextKey(key);
-
- // do the encryption
- while (file.hasMore())
+
+ if (action == 'e')
+ {
+ int size = file.getNumberOfBlocks();
+ char **state = new char*[size];
+ int count = 0;
+
+ for(int i=0; i <size; i++)
+ {
+ char *temp = new char[BLOCK_SIZE+8];
+ ptr = file.accessBlock();
+ memcpy(temp, ptr, BLOCK_SIZE);
+ state[i] = temp;
+ }
+
+ encrypter.encryptBlock(state, size); // run the encryption
+
+ file.goToStart();
+ while (file.hasMore())
+ {
+ ptr = file.accessBlock();
+ memcpy(ptr, state[count], BLOCK_SIZE);
+ delete state[count++]; //Delete from memory
+ }
+
+ delete state; //Delete from memory
+
+ } else if (action == 'd')
+ {
+ while (file.hasMore()){
+ ptr = file.accessBlock();
+ encrypter.decryptBlock(ptr);
+ }
+ } else
{
- ptr = file.accessBlock(); // get a block of the image
- if (action == 'e')
- {
- encrypter.encryptBlock(ptr); // run the encryption
- }
- else if (action == 'd')
- {
- encrypter.decryptBlock(ptr);
- }
- else
- {
- throw invalidAction();
- return false;
- }
- }
-
+ throw invalidAction();
+ return false;
+ }
+
// write out the file
out_success = file.writeOutFile(out_file);
if (!out_success)
diff --git a/encryptjpeg.h b/encryptjpeg.h
index f412ec0..208b0d5 100644
--- a/encryptjpeg.h
+++ b/encryptjpeg.h
@@ -1,7 +1,7 @@
/********************************************************
Winter 2013
GPU610 Assignment
- Author: Saad Mohammad, Phillip Aziz, Natesh Mayuranathan
+ Author: Saad Mohammad
Team: NullPointerException
Original Project: <https://github.com/markwatson/Image-Encrypt>
diff --git a/main.cu b/main.cu
index 37707d2..33a9a54 100644
--- a/main.cu
+++ b/main.cu
@@ -1,7 +1,7 @@
/********************************************************
Winter 2013
GPU610 Assignment
- Author: Saad Mohammad, Phillip Aziz, Natesh Mayuranathan
+ Author: Saad Mohammad
Team: NullPointerException
Original Project: <https://github.com/markwatson/Image-Encrypt>
@@ -15,6 +15,7 @@
#include <ctime>
#include "encryptjpeg.h"
#include "aesencrypt.cuh"
+#include "cuda_runtime.h"
using namespace std;
int main(int argc, char *argv[])
@@ -72,6 +73,7 @@ int main(int argc, char *argv[])
cout << "The program encountered an internal error..." << endl;
}
+ cudaDeviceReset();
return 0;
}
Final Results
