test_pi_decrypt.c
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#include <stdlib.h>
#include <stdio.h>
#include "pi_aes.h"
#include "test_utils.h"
main(int argc,char *argv[])
{
u8 key[16],iv[16],*inData,*outData;
int fsize,och,firstFileIndx=2;
FILE *pFile;
if(argc<5){
printf(
"usage: \n"
"test_pi_decrypt -a <key_file> <vect_file> <data_in_file> <data_out_file>\n");
printf(" + where optional -a specifies ascii i/o for data_*_file.\n");
printf(" if no -a option, data_*_file are binary.\n");
printf(" + <key_file> and <vect_file> are ascii, like key_ex.dat\n");
printf(" and iv_ex.dat\n");
return;
}
och=getopt(argc,argv,"a");
if((char)och=='?'){
printf("bad option\n");
exit(1);
}
else if(och==-1){
/* no options */
firstFileIndx = 1;
}
if(och=='a'){
fsize = getFileSizeAscii(argv[firstFileIndx+2]);
}
else{
fsize = getFileSize(argv[firstFileIndx+2]);
}
printf("Bytes of data input: %d\n",fsize);
if(fsize&0xf){
printf(" input file size must be multiple of 16 bytes\n");
return;
}
inData=malloc(fsize);
outData=malloc(fsize);
readAsciiBinaryData(argv[firstFileIndx++],key,16);
readAsciiBinaryData(argv[firstFileIndx++],iv,16);
if((char)och=='a'){
readAsciiBinaryData(argv[firstFileIndx++],inData,fsize);
}
else{
pFile=fopen(argv[firstFileIndx++],"r");
fread(inData,1,fsize,pFile);
fclose(pFile);
}
aesDecrypt(key,iv,inData,fsize,outData);
if((char)och=='a'){
writeAsciiBinaryData(argv[firstFileIndx++],outData,fsize);
}
else{
pFile=fopen(argv[firstFileIndx++],"w");
fwrite(outData,1,fsize,pFile);
fclose(pFile);
}
free(inData);
free(outData);
}