C++ C+中的AES 256加密+;和Qt 5
我有一个加密的Java代码,如下所示C++ C+中的AES 256加密+;和Qt 5,c++,qt,encryption,aes,C++,Qt,Encryption,Aes,我有一个加密的Java代码,如下所示 private static byte[] encrypt(byte[] raw, byte[] clear) throws Exception { SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES"); Cipher cipher = null; if(isIVUsedForCrypto) { cipher = Cipher.getInsta
private static byte[] encrypt(byte[] raw, byte[] clear) throws
Exception {
SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
Cipher cipher = null;
if(isIVUsedForCrypto) {
cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, skeySpec, new IvParameterSpec(IV));
}
else
{
cipher = Cipher.getInstance("AES");
cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
}
byte[] encrypted = cipher.doFinal(clear);
return encrypted;
}
public static byte[] toByte(String hexString) {
int len = hexString.length()/2;
byte[] result = new byte[len];
try{
for (int i = 0; i < len; i++) {
result[i] = Integer.valueOf(hexString.substring(2*i, 2*i+2),16).byteValue();
}
}catch (Exception e) {
}
return result;
}
public static String toHex(byte[] buf) {
if (buf == null)
return "";
StringBuffer result = new StringBuffer(2*buf.length);
for (int i = 0; i < buf.length; i++) {
appendHex(result, buf[i]);
}
return result.toString();
}
private final static String HEX = "0123456789ABCDEF";
private static void appendHex(StringBuffer sb, byte b) {
sb.append(HEX.charAt((b>>4)&0x0f)).append(HEX.charAt(b&0x0f));
}
我需要为上面的方法(在java中)编写C++等价物。我不知道密码的C++类,希望有人提供一个例子来显示同样的。< /P> 提前谢谢 编辑 我的原始密钥将是十六进制的->729308A8E815F6A46EB3A8AE6D5463CA7B64A0E2E11BC26A6860FC7697E727E 我的最终加密密码是-->812DCE870D82E93DB62CDA66AAF37FB2 这在Java中是可行的,但我需要一个类似的C++解决方案。试试这个:
#include <crypto++/aes.h>
#include <crypto++/modes.h>
#include <crypto++/filters.h>
#include <crypto++/hex.h>
#include <crypto++/sha.h>
#include <crypto++/md5.h>
QString Foo::decrypt(const QString &password)
{
string plain;
string encrypted = password.toStdString();
// Hex decode symmetric key:
HexDecoder decoder;
decoder.Put( (byte *)PRIVATE_KEY,32*2 );
decoder.MessageEnd();
word64 size = decoder.MaxRetrievable();
char *decodedKey = new char[size];
decoder.Get((byte *)decodedKey, size);
// Generate Cipher, Key, and CBC
byte key[ AES::MAX_KEYLENGTH ], iv[ AES::BLOCKSIZE ];
StringSource( reinterpret_cast<const char *>(decodedKey), true,
new HashFilter(*(new SHA256), new ArraySink(key, AES::MAX_KEYLENGTH)) );
memset( iv, 0x00, AES::BLOCKSIZE );
try {
CBC_Mode<AES>::Decryption Decryptor
( key, sizeof(key), iv );
StringSource( encrypted, true,
new HexDecoder(new StreamTransformationFilter( Decryptor,
new StringSink( plain ) ) ) );
}
catch (Exception &e) { // ...
}
catch (...) { // ...
}
return QString::fromStdString(plain);
}
QString Foo::encrypt(const QString &password)
{
string plain = password.toStdString();
string ciphertext;
// Hex decode symmetric key:
HexDecoder decoder;
decoder.Put( (byte *)PRIVATE_KEY, 32*2 );
decoder.MessageEnd();
word64 size = decoder.MaxRetrievable();
char *decodedKey = new char[size];
decoder.Get((byte *)decodedKey, size);
// Generate Cipher, Key, and CBC
byte key[ AES::MAX_KEYLENGTH ], iv[ AES::BLOCKSIZE ];
StringSource( reinterpret_cast<const char *>(decodedKey), true,
new HashFilter(*(new SHA256), new ArraySink(key, AES::MAX_KEYLENGTH)) );
memset( iv, 0x00, AES::BLOCKSIZE );
CBC_Mode<AES>::Encryption Encryptor( key, sizeof(key), iv );
StringSource( plain, true, new StreamTransformationFilter( Encryptor,
new HexEncoder(new StringSink( ciphertext ) ) ) );
return QString::fromStdString(ciphertext);
}
就我个人而言,我不喜欢在源代码中透露私钥。所以我将在命令行中将其传递给编译器:
g++ -DPRIVATE_KEY \"\"\"123...\"\"\" ...
其中PRIVATE_KEY是纯文本形式的私钥。如果你在十六进制编码中有密钥,只要删除<代码>十六进制解码对称密钥< /C>步骤> < /p>“我不知道密码的C++类”。从下面留下的评论判断,您至少知道一个库。你有没有调查过为什么它看起来不符合你的要求?你还尝试过哪些其他图书馆?是否有某种原因,它必须是C++,而不能简单地是OpenSSL API栈?或者一个完成工作的瘦包装?我试过Botan,但它没有给我一个十六进制加密字符串作为输出Yes会尝试现在让你知道…谢谢这个例子上面的代码使用任何库吗?或者我可以和Botan一起用?好的。目前我只需要使用AES-256算法进行加密。如果我给出一个十六进制的原始键,它会工作吗?是否有任何代码行需要从encrypt方法中删除。检查问题中的编辑如果您计划将密钥作为十六进制编码字符串,请删除两条注释之间的行(
HEX decode symmetric key
和下一条注释)好的,我知道了,它是用于AES 256的吗?我不想用盐
//...
#define PRIVATE_KEY "729308A8E815F6A46EB3A8AE6D5463CA7B64A0E2E11BC26A68106FC7697E727E37011"
QString encrypted = Foo::encryptPassword("test");
// use encrypted
g++ -DPRIVATE_KEY \"\"\"123...\"\"\" ...