0x34,0x35,0x36,0x37,0x38,0x39,0x3A,0x3B,0x3C,0x3D,0xFF,0xFF,0xFF,0x00,0xFF,0xFF,
0xFF,0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0A,0x0B,0x0C,0x0D,0x0E,
0x0F,0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x18,0x19,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0x1A,0x1B,0x1C,0x1D,0x1E,0x1F,0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,
0x29,0x2A,0x2B,0x2C,0x2D,0x2E,0x2F,0x30,0x31,0x32,0x33,0xFF,0xFF,0xFF,0xFF,0xFF
};
INT BASE64_Decode( const TCHAR* inputBuffer, INT inputCount, BYTE* outputBuffer )
{
INT i, j;
BYTE b[4];
TCHAR ch;
if( (inputBuffer == NULL) || (inputCount < 0) )
{
return -1; // 参数错误
}
// 去除头部空白字符
while( inputCount > 0 )
{
ch = *inputBuffer;
if( (ch < 0) || (ch >= 0x80) )
{
return -2; // 数据错误,不在ASCII字符编码范围内
}
else
{
if( DATA_ASCII2BIN[ch] == B64_WS )
{
inputBuffer++;
inputCount--;
}
else
{
break;
}
}
}
// 去除尾部的空白字符、回车换行字符、连字符
while( inputCount >= 4 )
{
ch = inputBuffer[inputCount - 1];
if( (ch < 0) || (ch >= 0x80) )
{
return -2; // 数据错误,不在ASCII字符编码范围内
}
else
{
if( B64_NOT_BASE64(DATA_ASCII2BIN[ch]) )
{
inputCount--;
}
else
{
break;
}
}
}
// 字符串长度必须为4的倍数
if( (inputCount % 4) != 0 )
{
return -2; // 数据错误
}
if( outputBuffer != NULL )