public static void DES_ecb_encrypt_one(byte[] inBytesTotal, uint startPos, uint inLen, ref byte[] outBytesTotal,
DES_key_schedule ks, int enc, CryptContext cryptContext)
{
int len_ = (((int)inLen + 7) / 8) * 8;
outBytesTotal = new byte[len_];
byte[] inBytes = new byte[8];
byte[] outBytes = new byte[8];
int idx = 0;
for (idx = 0; idx <= inLen - 8; idx += 8)
{
//if (idx % 16 == 0) // 如果是 16 的整数倍
//{
// 保证 8 个字节
CryptUtil.get8Byte(inBytesTotal, (int)startPos + idx, inBytes);
DES_ecb_encrypt(inBytes, outBytes, ks, enc);
Array.Copy(outBytes, 0, outBytesTotal, idx, 8);
//}
//else
//{
// Array.Copy(inBytesTotal, idx, outBytesTotal, idx, 8);
//}
}
}
public static void RC5_32_ecb_encrypt(byte[] inBytes, byte[] outBytes,
RC5_32_KEY ks, int encrypt, CryptContext cryptContext)
{
ulong l = 0;
ulong[] d = new ulong[2];
int c2l_inBytes_startIdx = 0;
int l2c_outBytes_startIdx = 0;
CryptUtil.c2l(inBytes, ref l, ref c2l_inBytes_startIdx);
d[0] = l;
CryptUtil.c2l(inBytes, ref l, ref c2l_inBytes_startIdx);
d[1] = l;
if (encrypt > 0)
{
RC5_32_encrypt(ref d, ks);
}
else
{
RC5_32_decrypt(ref d, ks);
}
l = d[0];
CryptUtil.l2c(l, outBytes, ref l2c_outBytes_startIdx);
l = d[1];
CryptUtil.l2c(l, outBytes, ref l2c_outBytes_startIdx);
l = d[0] = d[1] = 0;
}
// 加密，使用 des 对称数字加密算法，加密8字节补齐，可能会导致变长
public uint encrypt(CryptContext cryptContext, uint len_ = 0)
{
#if OBSOLETE
len_ = (len_ == 0 ? length : len_);
byte[] retByte = null;
// 只有 8 个字节的时候才加密
uint leftCnt = len_ % 8; // 剩余的数量
uint cryptCnt = leftCnt;
if (len_ >= 8)
{
Crypt.encryptData(m_dynBuff.buff, position, len_ - leftCnt, ref retByte, cryptKey);
writeBytes(retByte, 0, (uint)retByte.Length, false);
cryptCnt += (uint)retByte.Length;
}
if (leftCnt > 0) // 如果还有剩余的字节没有加密，还需要增加长度
{
position += leftCnt;
}
return(cryptCnt);
#endif
len_ = (len_ == 0 ? length : len_);
uint alignLen_ = ((len_ + 7) / 8) * 8; // 补齐 8 个字节，因为加密是 8 个字节一次加密，只要是 8 个字节的整数倍，无论多少个都可以任意解压
uint leftLen_ = alignLen_ - len_;
if (leftLen_ > 0)
{
if (m_padBytes == null)
{
m_padBytes = new byte[8];
}
// 保存数据，然后补 0
Array.Copy(m_dynBuff.buff, position + len_, m_padBytes, 0, leftLen_);
Array.Clear(m_dynBuff.buff, (int)(position + len_), (int)leftLen_);
}
if (len_ == 0) // 修正之后还等于 0
{
return(0);
}
if (alignLen_ > m_dynBuff.capacity) // 如果最后加密(由于补齐)的长度大于原始长度
{
length = alignLen_;
}
byte[] retByte = null;
Crypt.encryptData(m_dynBuff.buff, position, alignLen_, ref retByte, cryptContext); // 注意补齐不一定是 0
Array.Copy(m_padBytes, 0, m_dynBuff.buff, position + len_, leftLen_); // 拷贝回去
replace(retByte, 0, alignLen_, position, len_);
//check();
return(alignLen_);
}
// 解密，现在必须 8 字节对齐解密
public void decrypt(CryptContext cryptContext, uint len_ = 0)
{
len_ = (len_ == 0 ? length : len_);
byte[] retByte = null;
if (0 == len_)
{
return;
}
Crypt.decryptData(m_dynBuff.buff, position, len_, ref retByte, cryptContext);
writeBytes(retByte, 0, (uint)retByte.Length, false);
//check();
}
protected void testRc5()
{
string testStr = "asdfasdf5";
//byte[] inBytes = System.Text.Encoding.UTF8.GetBytes(testStr);
byte[] inBytes = { 0x3f, 0x79, 0xd5, 0xe2, 0x4a, 0x8c, 0xb6, 0xc1, 0x3f, 0x79, 0xd5, 0xe2, 0x4a, 0x8c, 0xb6, 0xc1 };
byte[] outBytes = new byte[8];
uint inSize = (uint)inBytes.Length;
RC5_32_KEY rc5Key = new RC5_32_KEY(); // RC5 key
RC5.RC5_32_set_key(rc5Key, 16, Crypt.RC5_KEY, RC5.RC5_12_ROUNDS); // 生成秘钥
CryptContext cryptContext = new CryptContext();
Crypt.encryptData(inBytes, 0, 16, ref outBytes, cryptContext);
Crypt.decryptData(outBytes, 0, 16, ref inBytes, cryptContext);
testStr = System.Text.Encoding.Default.GetString(inBytes);
}
public static void RC5_32_ecb_encrypt_one(byte[] inBytesTotal, uint startPos, uint inLen, ref byte[] outBytesTotal,
RC5_32_KEY ks, int encrypt, CryptContext cryptContext)
{
int len_ = (((int)inLen + 7) / 8) * 8;
outBytesTotal = new byte[len_];
byte[] inBytes = new byte[8];
byte[] outBytes = new byte[8];
int idx = 0;
for (idx = 0; idx <= inLen - 8; idx += 8)
{
// ±£Ö¤ 8 ¸ö×Ö½Ú
CryptUtil.get8Byte(inBytesTotal, (int)startPos + idx, inBytes);
RC5_32_ecb_encrypt(inBytes, outBytes, ks, encrypt, cryptContext);
Array.Copy(outBytes, 0, outBytesTotal, idx, 8);
}
}
protected void testDes()
{
//string testStr = "asdfasdf5";
//byte[] inBytes = System.Text.Encoding.UTF8.GetBytes(testStr);
//byte[] key = { 0x65, 0xC1, 0x78, 0xB2, 0x84, 0xD1, 0x97, 0xCC };
byte[] key = { 26, 32, 127, 193, 251, 239, 174, 97 };
//byte[] inBytes = { 0x3f, 0x79, 0xd5, 0xe2, 0x4a, 0x8c, 0xb6, 0xc1, 0x3f, 0x79, 0xd5, 0xe2, 0x4a, 0x8c, 0xb6, 0xc1 };
byte[] inBytes = { 0x0c, 0x00, 0x00, 0x00, 0x03, 0x35, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 };
byte[] outBytes = new byte[16];
uint inSize = (uint)inBytes.Length;
DES_key_schedule des5Key = new DES_key_schedule(); // RC5 key
Dec.DES_set_key_unchecked(key, des5Key);
CryptContext cryptContext = new CryptContext();
cryptContext.m_cryptAlgorithm = CryptAlgorithm.DES;
cryptContext.setCryptKey(key);
//Crypt.encryptData(inBytes, 0, 16, ref outBytes, des5Key, CryptAlgorithm.DES);
//Crypt.decryptData(outBytes, 0, 16, ref inBytes, des5Key, CryptAlgorithm.DES);
//testStr = System.Text.Encoding.UTF8.GetString(inBytes);
Crypt.decryptData(inBytes, 0, 16, ref outBytes, cryptContext);
}
public static void DES_ecb_encrypt_one(byte[] inBytesTotal, uint startPos, uint inLen, ref byte[] outBytesTotal,
DES_key_schedule ks, int enc, CryptContext cryptContext)
{
int len_ = (((int)inLen + 7) / 8) * 8;
outBytesTotal = new byte[len_];
byte[] inBytes = new byte[8];
byte[] outBytes = new byte[8];
int idx = 0;
for (idx = 0; idx <= inLen - 8; idx += 8)
{
//if (idx % 16 == 0) // 如果是 16 的整数倍
//{
// 保证 8 个字节
CryptUtil.get8Byte(inBytesTotal, (int)startPos + idx, inBytes);
DES_ecb_encrypt(inBytes, outBytes, ks, enc);
Array.Copy(outBytes, 0, outBytesTotal, idx, 8);
//}
//else
//{
// Array.Copy(inBytesTotal, idx, outBytesTotal, idx, 8);
//}
}
}
public static void RC5_32_ecb_encrypt_one(byte[] inBytesTotal, uint startPos, uint inLen, ref byte[] outBytesTotal,
RC5_32_KEY ks, int encrypt, CryptContext cryptContext)
{
int len_ = (((int)inLen + 7) / 8) * 8;
outBytesTotal = new byte[len_];
byte[] inBytes = new byte[8];
byte[] outBytes = new byte[8];
int idx = 0;
for (idx = 0; idx <= inLen - 8; idx += 8)
{
// ±£Ö¤ 8 ¸ö×Ö½Ú
CryptUtil.get8Byte(inBytesTotal, (int)startPos + idx, inBytes);
RC5_32_ecb_encrypt(inBytes, outBytes, ks, encrypt, cryptContext);
Array.Copy(outBytes, 0, outBytesTotal, idx, 8);
}
}
public static void RC5_32_ecb_encrypt(byte[] inBytes, byte[] outBytes,
RC5_32_KEY ks, int encrypt, CryptContext cryptContext)
{
ulong l = 0;
ulong[] d = new ulong[2];
int c2l_inBytes_startIdx = 0;
int l2c_outBytes_startIdx = 0;
CryptUtil.c2l(inBytes, ref l, ref c2l_inBytes_startIdx);
d[0] = l;
CryptUtil.c2l(inBytes, ref l, ref c2l_inBytes_startIdx);
d[1] = l;
if (encrypt > 0)
RC5_32_encrypt(ref d, ks);
else
RC5_32_decrypt(ref d, ks);
l = d[0];
CryptUtil.l2c(l, outBytes, ref l2c_outBytes_startIdx);
l = d[1];
CryptUtil.l2c(l, outBytes, ref l2c_outBytes_startIdx);
l = d[0] = d[1] = 0;
}
// 解密，现在必须 8 字节对齐解密
public void decrypt(CryptContext cryptContext, uint len_ = 0)
{
len_ = (len_ == 0 ? length : len_);
byte[] retByte = null;
if (0 == len_)
{
return;
}
Crypt.decryptData(m_dynBuff.buff, position, len_, ref retByte, cryptContext);
writeBytes(retByte, 0, (uint)retByte.Length, false);
//check();
}
// 加密，使用 des 对称数字加密算法，加密8字节补齐，可能会导致变长
public uint encrypt(CryptContext cryptContext, uint len_ = 0)
{
#if OBSOLETE
len_ = (len_ == 0 ? length : len_);
byte[] retByte = null;
// 只有 8 个字节的时候才加密
uint leftCnt = len_ % 8; // 剩余的数量
uint cryptCnt = leftCnt;
if (len_ >= 8)
{
Crypt.encryptData(m_dynBuff.buff, position, len_ - leftCnt, ref retByte, cryptKey);
writeBytes(retByte, 0, (uint)retByte.Length, false);
cryptCnt += (uint)retByte.Length;
}
if (leftCnt > 0) // 如果还有剩余的字节没有加密，还需要增加长度
{
position += leftCnt;
}
return cryptCnt;
#endif
len_ = (len_ == 0 ? length : len_);
uint alignLen_ = ((len_ + 7) / 8) * 8; // 补齐 8 个字节，因为加密是 8 个字节一次加密，只要是 8 个字节的整数倍，无论多少个都可以任意解压
uint leftLen_ = alignLen_ - len_;
if(leftLen_ > 0)
{
if(m_padBytes == null)
{
m_padBytes = new byte[8];
}
// 保存数据，然后补 0
Array.Copy(m_dynBuff.buff, position + len_, m_padBytes, 0, leftLen_);
Array.Clear(m_dynBuff.buff, (int)(position + len_), (int)leftLen_);
}
if (len_ == 0) // 修正之后还等于 0
{
return 0;
}
if (alignLen_ > m_dynBuff.capacity) // 如果最后加密(由于补齐)的长度大于原始长度
{
length = alignLen_;
}
byte[] retByte = null;
Crypt.encryptData(m_dynBuff.buff, position, alignLen_, ref retByte, cryptContext); // 注意补齐不一定是 0
Array.Copy(m_padBytes, 0, m_dynBuff.buff, position + len_, leftLen_); // 拷贝回去
replace(retByte, 0, alignLen_, position, len_);
//check();
return alignLen_;
}
