看到有人贴了一个随机密码生成的应用，我贴下以前自己写的高强度随机密码生成C++版本的源代码吧，这垃圾玩意写的戳，放在微云上好久了，没啥用，今天看到有人贴了(
分享一个随机密码生成应用)，也贴出来吧。
password.h
#ifndef PASSWORD_PASSWORD_GEN_H_
#define PASSWORD_PASSWORD_GEN_H_
//////////////////////////////////////////////////////////////////////////
#include "password/basictypes.h"
//////////////////////////////////////////////////////////////////////////
namespace password{
enum PasswordGenLength{
kPassword32Bit = 32,
kPassword16Bit = 16
};
class WIN_DLL_API PasswordGen
{
public:
static PasswordGen* GetInterface(bool free_exit = false);
virtual void DIAllocate();
virtual void DIRelease();
char* PasswordGenerator(const unsigned long length);
bool IsValidPassword(const unsigned long length);
private:
PasswordGen(void);
~PasswordGen(void);
char* password_;
DISALLOW_EVIL_CONSTRUCTORS(PasswordGen);
};
}
#endif
password.cc
#include "password/password_gen.h"
namespace password{
static const unsigned char password_table[] = {
0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x3C, 0x3E, 0x40, 0x6A,
0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72, 0x73, 0x74,
0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x41, 0x42, 0x43, 0x44,
0x45, 0x46, 0x47, 0x48, 0x25, 0x26, 0x2F, 0x4B, 0x4C, 0x4D,
0x4F, 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
0x59, 0x5A, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
0x38, 0x39, 0x5E, 0x21, 0x24, 0x49, 0x4A, 0x28, 0x22, 0x4E,
0x29, 0x3D, 0x3F, 0x3F, 0x5C, 0x2A, 0x2B, 0x27, 0x23, 0x3B,
0x2C, 0x3A, 0x2E, 0x5F, 0x2D, 0x67, 0x68, 0x69
};
PasswordGen* PasswordGen::GetInterface(bool free_exit){
static PasswordGen* ref_instance;
if(!ref_instance){
PasswordGen* new_instance = new PasswordGen;
if(InterlockedCompareExchangePointer(reinterpret_cast<PVOID*>(&ref_instance),new_instance,NULL)){
delete new_instance;
}
}
if(free_exit){
delete ref_instance;
ref_instance = NULL;
}
return ref_instance;
}
void PasswordGen::DIAllocate(){
password_ = new char[kMaxTempLength];
memset(password_,0,kMaxTempLength);
}
void PasswordGen::DIRelease(){
if(password_){
delete[] password_;
password_ = NULL;
}
}
char* PasswordGen::PasswordGenerator(const unsigned long length){
srand(static_cast<unsigned int>(time(NULL)));
for(unsigned int i=0;i<length;i++){
int rand_position = (static_cast<int>(rand()%sizeof(password_table)-1));
password_[i] = password_table[static_cast<int>(floor(static_cast<long double>(rand_position)))];
while(i>0&&i<length&&isupper(password_[i-1])&&isupper(password_[i])){
rand_position = (static_cast<int>(rand()%sizeof(password_table)-1));
password_[i] = password_table[static_cast<int>(floor(static_cast<long double>(rand_position)))];
}
while(i>0&&i<length&&islower(password_[i-1])&&islower(password_[i])){
rand_position = (static_cast<int>(rand()%sizeof(password_table)-2));
password_[i] = password_table[static_cast<int>(floor(static_cast<long double>(rand_position)))];
}
while(i>0&&i<length&&isdigit(password_[i-1])&&isdigit(password_[i])){
rand_position = (static_cast<int>(rand()%sizeof(password_table)-3));
password_[i] = password_table[static_cast<int>(floor(static_cast<long double>(rand_position)))];
}
while(i>0&&i<length&&ispunct(password_[i-1])&&ispunct(password_[i])){
rand_position = (static_cast<int>(rand()%sizeof(password_table)-4));
password_[i] = password_table[static_cast<int>(floor(static_cast<long double>(rand_position)))];
}
}
return password_;
}
bool PasswordGen::IsValidPassword(const unsigned long length){
return (strlen(password_)==length);
}
PasswordGen::PasswordGen(void):password_(NULL){
DIRelease();
}
PasswordGen::~PasswordGen(void){
DIRelease();
}
}
BTW:这垃圾玩意真的没啥用，掖着藏着干啥啊。。。。。。没搞明白。有点直接，抱歉。
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