static int fdecode(FILE *in, FILE *out)
{
off_t buflen;
off_t count;
char *decbuf = NULL;
char *ptr = NULL;
off_t pos;
pos = 0;
while(!feof(in)) {
count = fread(buf, 1, sizeof(buf), in);
if ( count <= 0 )
return -1;
ptr = realloc(decbuf, count+pos);
if ( !ptr )
die(ENOMEM, "Out of memory in fdecode");
decbuf = ptr;
memcpy(decbuf+pos, buf, count);
pos += count;
}
ptr = malloc(base32decsize(pos));
buflen = base32dec(ptr, pos, decbuf); // buflen is exact
fwrite(ptr, 1, buflen, out);
return 0;
}
vector<string> decrypt (vector<string> cipher, string keystr, primenc_et contprimenc, contenc_et contsecenc)
{
byte primdecarr[CIPHERLEN*20+1];
uint32_t i;
vector<string> decvec;
for(i=0;i<cipher.size();i++){
if(NO_PRIMENC == contprimenc){
nodec(primdecarr, cipher[i]);
}else if(BASE64 == contprimenc){
base64dec(primdecarr, cipher[i]);
}else if(BASE32 == contprimenc){
base32dec(primdecarr, cipher[i]);
}else if(BASE16 == contprimenc){
base16dec(primdecarr, cipher[i]);
}else{
throw contprimenc;
cout << "This primary encoding is not supported yet." << endl;
}
if(NO_CONTENC == contsecenc){
decvec.push_back(nocrypt(primdecarr));
}else if(AES_128 == contsecenc){
decvec.push_back(AESdec(primdecarr, keystr));
}else{
throw contsecenc;
cout << "This secondary encoding is not supported yet." << endl;
}
}
return decvec;
}
string b32AESdec(string b32cipher, string keystr)
{
byte b32decarr[CIPHERLEN*8/5*4+1];
base32dec(b32decarr, b32cipher);
return AESdec(b32decarr, keystr);
}
void base32dec(byte* dec, string base32str)
{
std::transform(base32str.begin(), base32str.end(), base32str.begin(), ::toupper);
base32dec(dec, (byte*) base32str.c_str(), base32str.size());
}