Wrong hash in C implementation of Sha-1 - c

Question

My file input contains the chars "abc" and is supposed to generate the hash: "a9993e364706816aba3e25717850c26c9cd0d89d" Instead, my output is 2474716729 148412417 414899454 2419217526 3285377520. My bit shifting should be correct but when I print out my W[t] I'm pretty sure the numbers are wrong.
#include <stdio.h>
#define MAX_SIZE 1048576
static unsigned char buffer[MAX_SIZE];
static unsigned int message[MAX_SIZE];
unsigned int readFile(unsigned char buffer[])
{
size_t length = 0;
int b = 0;
for (b = 0; b < MAX_SIZE; b++)
{
buffer[b]= '\0';
}
int i = 0;
char *fileName = "abc.txt";
FILE *filePointer = fopen(fileName, "r");
if (filePointer != NULL)
{
length = fread(buffer, sizeof(char), MAX_SIZE, filePointer);
if (ferror(filePointer)!= 0)
{
fputs("Error", stderr);
}
if (length > MAX_SIZE)
{
fputs("Input file too big for program", stderr);
}
//add one bit;
buffer[length] = 0x80;
//length++;
}
/*for (i = 0; i < MAX_SIZE; i++)
{
printf("%c", buffer[i]);
}
*/
fclose(filePointer);
return length;
}
unsigned int calculateBlocks(unsigned int sizeOfFileInBytes)
{
int blockCount = (((8 * sizeOfFileInBytes) + 1) / 512) + 1;
if((((8 * sizeOfFileInBytes) + 1) % 512) > (512 - 64))
{
blockCount = blockCount + 1;
}
//printf("here's block count: %i", blockCount);
return blockCount;
}
void convertCharArrayToIntArray(unsigned char buffer[], unsigned int
message[], unsigned int sizeOfFileInBytes)
{
int e = 0;
int d = 0;
//buffLength shows me how many chars are in array
size_t buffLength= strlen((char*)buffer);
//printf("this is bufflength: %zu -done", buffLength);
buffLength = buffLength/4;
for (e=0 ; e< buffLength; e++)
{
message[e] |= (buffer[e] <<24);
message[e] |= (buffer[e+1] <<16);
message[e] |= (buffer[e+2] <<8);
message[e] |= (buffer[e+3]);
}
/*for (d = 0; d <MAX_SIZE; d++)
{
printf("%i", message[d]);
} */
//printf("- done with message[d]");
}
void addBitCountToLastBlock(unsigned int message[], unsigned int
sizeOfFileInBytes, unsigned int blockCount)
{
int indexOfEndOfLastBlock = blockCount* 16 -1;
//printf("the size of file in bytes is: %i -done",
sizeOfFileInBytes);
sizeOfFileInBytes = sizeOfFileInBytes * 8;
message[indexOfEndOfLastBlock] = sizeOfFileInBytes;
//printf("index of last block is %i", message[indexOfEndOfLastBlock]);
int d = 0;
/* for (d = 0; d <MAX_SIZE; d++)
{
printf("%i", message[d]);
}
printf("- done with message[d]"); */
}
unsigned int K(unsigned int t)
{
unsigned int kHex[] = {0x5A827999, 0x6ED9EBA1, 0x8F1BBCDC, 0xCA62C1D6};
if (t>= 0 && t <= 19)
{
return kHex[0];
}
else if (t>= 20 && t <= 39)
{
return kHex[1];
}
else if (t>= 40 && t <= 59)
{
return kHex[2];
}
else if (t>= 60 && t <= 79)
{
return kHex[3];
}
return 0;
}
unsigned int f(unsigned int t, unsigned int B, unsigned int C, unsigned
int D)
{
if (t>= 0 && t <= 19)
{
return (B & C) |((~B)&D);
}
else if (t>= 20 && t <= 39)
{
return B^C^D;
}
else if (t>= 40 && t <= 59)
{
return (B & C) | (B & D) | (C & D);
}
else if (t>= 60 && t <= 79)
{
return B^C^D;
}
return 0 ;
}
void computeMessageDigest(unsigned int message[], unsigned int
blockCount)
void computeMessageDigest(unsigned int message[], unsigned int
blockCount)
{
unsigned int A, B, C, D, E;
unsigned int h[5];
unsigned int W[80];
unsigned int t = 0;
unsigned int temp; //temporary word value
unsigned int bCounter = 0;
int i = 0;
int d = 0 ;
// int z = 0;
//int blCount = 0;
/* for (d = 0; d <MAX_SIZE; d++)
{
printf("%i", message[d]);
}
printf("- done with message[d]"); */
int wInc = 0;
h[0] = 0x67452301;
h[1] = 0xefcdab89;
h[2] = 0x98badcfe;
h[3] = 0x10325476;
h[4] = 0xc3d2e1f0;
while ( bCounter < blockCount)
{
for (i= 16 * bCounter; i < 16 *bCounter +16; i++)
{
W[wInc] = message[i];
wInc++; //block one
}
wInc = 0;
/*for (z = 0; z < 16; z++)
{
printf("%i", W[z]);
} */
for (t = 16; t < 80; t++)
{
W[t] = (W[t-3] ^ W[t-8] ^ W[t-14] ^ W[t-16]) << 1;
// printf("%u ", W[t]);
}
A = h[0];
B = h[1];
C = h[2];
D = h[3];
E = h[4];
for (t = 0; t < 80; t++)
{
temp = (A << 5) + f(t, B, C, D) + E + W[t] + K(t);
E = D;
D = C;
C = B << 30;
B = A;
A = temp;
}
printf("Hex values for A, B, C, D, E");
printf("%u, %u, %u, %u, %u", A, B, C, D, E) ;
h[0] += A;
h[1] += B;
h[2] += C;
h[3] += D;
h[4] += E;
int b = 0;
for (b = 0; b <5; b++)
printf("%u ", h[b]);
bCounter++;
}
int main(int argc, const char * argv[]) {
// insert code here...
unsigned int blockCount = 0;
unsigned int sizeOfFile = 0;
sizeOfFile = readFile(buffer);
/*for (i = 0; i < MAX_SIZE; i++)
{
printf("%c", buffer[i]);
} */
//printf("%i is the size", readFile(buffer));
blockCount = calculateBlocks(sizeOfFile);
convertCharArrayToIntArray(buffer, message, sizeOfFile);
//printf("\n");
addBitCountToLastBlock(message, sizeOfFile, blockCount);
computeMessageDigest(message, blockCount);
return 0;