EncryptKey
RsaAlgorithm::deriveEncryptKey(const Blob& keyBits)
{
TpmPrivateKey privateKey;
privateKey.loadPkcs8(keyBits.buf(), keyBits.size());
return EncryptKey(privateKey.derivePublicKey());
}
// ClientCDKey::AsString
// Returns encrypted binary form of CD-Key. Builds binary form if needed.
const RawBuffer&
ClientCDKey::AsBinary() const
{
WTRACE("ClientCDKey::AsBinary");
if (mBinKey.empty())
{
if (IsValid())
EncryptKey(BufferFromFields());
else
mBinKey.erase();
}
return mBinKey;
}
// 更新出厂KEY
int ks_zjvcc_cardtype::UpdateKey(const byte ucMainKey[16],byte ucKeyIndex,byte ucKeyType,byte ucKey[16]) {
int nRet=0;
byte ucCmd[256]= {0};
byte ucCmdLen=0;
byte ucOutBuf[128]= {0};
int iOutLen=0;
int keylen = 0;
byte ucMac[4]= {0};
byte ucSessionKey[17]= {0};
byte ucRandom[9]= {0};
byte ucPlainKey[40]= {0};
// 更新握奇出厂卡的密钥
memcpy(ucCmd,"\x84\xD4\x00\x00\x1C",5);
ucCmd[2] = ucKeyType;
ucCmd[3] = ucKeyIndex;
keylen = 0;
ucPlainKey[keylen++] = 16;
memcpy(ucPlainKey+keylen,ucKey,16);
keylen += 16;
memcpy(ucPlainKey+keylen,"\x80\x00\x00\x00\x00\x00\x00",7);
keylen += 7;
nRet=GetRandomNum8(ucRandom);
if(nRet) {
return nRet;
}
//用主控会话密钥加密待加密数据
EncryptKey(ucMainKey,2,ucPlainKey,keylen,ucOutBuf,iOutLen);
memcpy(ucCmd+5,ucOutBuf,iOutLen);
ucCmdLen=iOutLen+5;
// 计算MAC
CalcMac(ucRandom,(byte*)ucMainKey,2,ucCmd,ucCmdLen,ucMac);
memcpy(ucCmd+ucCmdLen,ucMac,4);
ucCmdLen+=4;
byte ucRespData[256]= {0};
byte ucRespLen = 0;
return Adpu(ucCmd,ucCmdLen, ucRespData, ucRespLen);
}
/**
* Derive a new encrypt key from the given decrypt key value.
* @param keyBits The key value of the decrypt key.
* @return The new encrypt key.
*/
static EncryptKey
deriveEncryptKey(const Blob& keyBits)
{
return EncryptKey(keyBits);
}