int AsymmCipher::decrypt(const byte* cipher, int cipherlen, byte* out, int numbytes)
{
Integer m;
if (!decodeintarray(&m, 1, cipher, cipherlen))
{
return 0;
}
rsadecrypt(key, &m);
unsigned l = key[AsymmCipher::PRIV_P].ByteCount() + key[AsymmCipher::PRIV_Q].ByteCount() - 2;
if (m.ByteCount() > l)
{
l = m.ByteCount();
}
l -= numbytes;
while (numbytes--)
{
out[numbytes] = m.GetByte(l++);
}
return 1;
}
int AsymmCipher::decrypt(const byte* c, int cl, byte* out, int numbytes)
{
Integer m;
if (!decodeintarray(&m,1,c,cl)) return 0;
rsadecrypt(key,&m);
unsigned l = key[AsymmCipher::PRIV_D].ByteCount()-2;
if (m.ByteCount() > l) l = m.ByteCount();
l -= numbytes;
while (numbytes--) out[numbytes] = m.GetByte(l++);
return 1;
}
int AsymmCipher::setkey(int numints, const byte* data, int len)
{
int ret = decodeintarray(key, numints, data, len);
padding = (numints == PUBKEY && ret) ? (len - key[PUB_PQ].ByteCount() - key[PUB_E].ByteCount() - 4) : 0;
return ret;
}
int AsymmCipher::setkey(int numints, const byte* data, int len)
{
return decodeintarray(key, numints, data, len);
}