这个RSA加密代码有什么问题？ [英] What is wrong with this RSA encryption code?
问题描述
代码执行成功，但快速查看生成的文件会显示后续结果。我错了什么？
// SaveAppData.cpp：定义控制台应用程序的入口点。
#define _CRT_RAND_S
#include < cstdlib >
#include < stdio.h >
#include < string.h >
#include < math.h >
#include openssl / constant_time_locl.h //此头文件必须手动获取并放入openssl文件夹
#include openssl / cryptlib.h //这个头文件必须手动获取并放入openssl文件夹
#include openssl / bn.h
＃ include openssl / rsa.h
#include openssl / pem.h
#include openssl / err.h
#include openssl / evp.h
＃ include openssl / rand.h
#include < span class =code-string> openssl / sha.h
#include Header.h
#define LOG（x）3.32 * log10（x）
#define ENTROPY（x） - （x * LOG（x））
#define RSA_F_RSA_PADDING_CHECK_PKCS1_OAEP_MGF1 153
const int KEY_LENGTH = 4096 ;
const int PUB_EXP = RSA_F4;
const int BUFFER_LENGTH = 256 ;
unsigned int uiTable [BUFFER_LENGTH];
double 分析（ int iDataNum）;
void ReadData（ unsigned char * pData， int iLength）;
int GenerateRandomString（ char * pszString， int nLength）;
double FindEntropy（ unsigned char * pData， int iDataNum）;
int main（ int argc， char * argv []）
{
char * pszData = 这是对我的测试;
char * pszDestinationFile = TestFile< /跨度>;
char * pszDestinationFile1 = TestFile1< /跨度>;
char szBuffer [ 256 ];
BIGNUM * pBigNumber = NULL;
RSA * pKeyPair = NULL;
BIO * pBioPub = NULL;
char * pszPubKey = NULL;
BIO * pBioPriv = NULL;
char * pszPrivKey = NULL;
unsigned char * pEncryptData = NULL;
bool bSuccess = true ;
double dEntropy;
if （！GenerateRandomString（szBuffer， 255 ））
{
return 0 ;
}
dEntropy = FindEntropy（（ unsigned char *） szBuffer，strlen的（szBuffer））;
pBigNumber = BN_new（）;
if （！pBigNumber）
{
bSuccess = 0 ;
goto 清理;
}
pKeyPair = RSA_new（）;
if （！pKeyPair）
{
bSuccess = 0 ;
goto 清理;
}
if （！BN_set_word（pBigNumber，PUB_EXP））
{
bSuccess = 0 ;
goto 清理;
}
RAND_add（szBuffer，strlen（szBuffer），dEntropy）;
if （！RSA_generate_key_ex（pKeyPair，KEY_LENGTH，pBigNumber，NULL））
{
bSuccess = 0 ;
goto 清理;
}
pBioPub = BIO_new（BIO_s_mem（））;
PEM_write_bio_RSAPublicKey（pBioPub，pKeyPair）;
int iPubKeyLen = BIO_pending（pBioPub）;
pszPubKey = new char [iPubKeyLen + 1 ];
BIO_read（pBioPub，pszPubKey，iPubKeyLen）;
pszPubKey [iPubKeyLen] = ' \ 0';
FILE * fp = fopen（pszDestinationFile， wb，ccs = UTF-8< /跨度>）;
if （！fp）
{
bSuccess = 0 ;
goto 清理;
}
if （！fwrite（pszPubKey， sizeof （ char ）*（iPubKeyLen + 1 ）， 1 ，fp ））
{
bSuccess = 0 ;
goto 清理;
}
fclose（fp）;
pEncryptData = new unsigned char [RSA_size（pKeyPair）];
if （！RSA_private_encrypt（strlen（pszData）+ 1 ，（ unsigned char *）pszData，pEncryptData，pKeyPair，RSA_PKCS1_OAEP_PADDING））
{
bSuccess = 0 ;
goto 清理;
}
fp = fopen（pszDestinationFile1， wb，ccs = UTF- 8\" ）;
if （！fp）
{
bSuccess = 0 ;
goto 清理;
}
if （！fwrite（pEncryptData，RSA_size（pKeyPair）， 1 ，fp））
{
bSuccess = 0 ;
goto 清理;
}
fclose（fp）;
清理：
如果（pBigNumber）
{
BN_free（pBigNumber）;
}
if （pKeyPair）
{
RSA_free（pKeyPair）;
}
if （pBioPub）
{
BIO_free_all（pBioPub）;
}
if （pszPubKey）
{
删除 [] pszPubKey;
}
if （pEncryptData）
{
delete [] pEncryptData;
}
return bSuccess;
}
double FindEntropy（ unsigned < span class =code-keyword> char * pData， int iDataNum）
{
memset（uiTable， 0 ， sizeof （uiTable））;
ReadData（pData，iDataNum）;
double dEntropy = Analyze（iDataNum）;
return dEntropy;
}
void ReadData（ unsigned char * pData， int iLength）
{
int ch;
for （ int i = 0 ; i< iLength; i ++）
{
ch = pData [i];
uiTable [ch] ++;
}
}
double 分析（ int iDataNum）
{
double dAccum = 0 。 0 ;
double dFreq;
register int z;
for （z = 0 ; z< BUFFER_LENGTH; z ++）
{
if （uiTable [z]）
{
dFreq =（ double ）uiTable [z] / iDataNum;
dAccum + =（ double ）ENTROPY（dFreq）;
}
}
return dAccum;
}
int GenerateRandomString（ char * pszString， int nLength）
{
unsigned int iNumber;
int iCount = 0 ;
if （rand_s（& iNumber））
{
返回 0 ;
}
while （iCount< nLength）
{
int iChar = iNumber％ 256 ;
if （isprint（iChar）&&！isspace（iChar））
{
pszString [iCount ] =（ char ）iChar;
iCount ++;
}
if （rand_s（& iNumber））
{
return 0 ;
}
}
pszString [nLength] = ' \ 0' ;
return 1 ;
}
公钥文件如下：< br $>
----- BEGIN RSA PUBLIC KEY -----
MIICCgKCAgEAnK / 2DuuahdzthOQBL3d7fm8vWBMye7FHGSR8hceJUaAQUS21XweP
cGHJ9A6Z1B / V29hWqjtTAxy7yj3y / eo7J + hsKgR + FqCsErw77bHFbWDM3 + wYnqVE
y0FjSKT0CHSX88LZ6l + 0grf21gpBhpgcDWwEfptBMLz1ImQtR7sDqQQeUok6yNez
cy4rrDf4A0NVlVHtyVRkXoN9r2AfM81codtmYXnEcTaODmyrHYuJIHuOKNFAiPVd
nQwYY14V6N + KyBDUgGbJ52Iu6G + xN8fgzc0HVeLPRBrfx6uQ8fPYPso6q + 6QfX4C
G75fkVIYLcSxivFWwziZqsni2UYVljayiFaPzGkNWeBqejTN6CnHnoJ15ZuP9791
X / UFjw / ihSYWqayDNtKvy79nN7YFv66oM090qqzgW6pMeqXHDmuqEDqZcD / 7tcWf
RByR0MAiuoT2rUQ2jo0y21 + SH / + + MhCNwjjoRnLa lGdPESqW / 2iR5XOWB31qfPJ /
9SxOnqratjy7Zkfwapxu8ahg22rRe5jWtj7wZ02aarWYuYy16T9Wgg2vUtaGYnqh
sWREaxp / F3ZuWUYIDnF8FJxKbNlweSjkWDRJwX5qsPh / 5XhUCMGs69ZsBwSw4h0r
zoFq93 + E0mmDNgjjhviLQlgbwfrjpJy2WpZIEZHsRCS51OEyCNXTm48CAwEAAQ ==
----- END RSA PUBLIC KEY -----
加密的消息如下：
ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ
我不认为上述加密消息可能是正确的加密消息。
RSA_private_encrypt返回-1表示错误。
您可能还有其他错误，但其中一个突出。
The code executes successfully, but a quick look at the files generated shows the succeeding results. What am I getting wrong?
// SaveAppData.cpp : Defines the entry point for the console application.
#define _CRT_RAND_S
#include <cstdlib>
#include <stdio.h>
#include <string.h>
#include <math.h>
#include "openssl/constant_time_locl.h"//This header file has to be manually got and put in openssl folder
#include "openssl/cryptlib.h"//This header file has to be manually got and put in openssl folder
#include "openssl/bn.h"
#include "openssl/rsa.h"
#include "openssl/pem.h"
#include "openssl/err.h"
#include "openssl/evp.h"
#include "openssl/rand.h"
#include "openssl/sha.h"
#include "Header.h"
#define LOG(x) 3.32 * log10(x)
#define ENTROPY(x) -(x * LOG(x))
#define RSA_F_RSA_PADDING_CHECK_PKCS1_OAEP_MGF1 153
const int KEY_LENGTH = 4096;
const int PUB_EXP = RSA_F4;
const int BUFFER_LENGTH = 256;
unsigned int uiTable[BUFFER_LENGTH];
double Analyze(int iDataNum);
void ReadData(unsigned char *pData, int iLength);
int GenerateRandomString(char *pszString,int nLength);
double FindEntropy(unsigned char *pData, int iDataNum);
int main(int argc,char *argv[])
{
char *pszData = "This is a test for me";
char *pszDestinationFile = "TestFile";
char *pszDestinationFile1 = "TestFile1";
char szBuffer[256];
BIGNUM *pBigNumber = NULL;
RSA * pKeyPair = NULL;
BIO *pBioPub = NULL;
char *pszPubKey = NULL;
BIO *pBioPriv = NULL;
char *pszPrivKey = NULL;
unsigned char * pEncryptData = NULL;
bool bSuccess = true;
double dEntropy;
if(!GenerateRandomString(szBuffer,255))
{
return 0;
}
dEntropy = FindEntropy((unsigned char *)szBuffer,strlen(szBuffer));
pBigNumber = BN_new();
if(!pBigNumber)
{
bSuccess = 0;
goto Cleanup;
}
pKeyPair = RSA_new();
if(!pKeyPair)
{
bSuccess = 0;
goto Cleanup;
}
if(!BN_set_word(pBigNumber,PUB_EXP))
{
bSuccess = 0;
goto Cleanup;
}
RAND_add(szBuffer,strlen(szBuffer),dEntropy);
if(!RSA_generate_key_ex(pKeyPair,KEY_LENGTH,pBigNumber,NULL))
{
bSuccess = 0;
goto Cleanup;
}
pBioPub = BIO_new(BIO_s_mem());
PEM_write_bio_RSAPublicKey(pBioPub,pKeyPair);
int iPubKeyLen = BIO_pending(pBioPub);
pszPubKey = new char [iPubKeyLen + 1];
BIO_read(pBioPub,pszPubKey,iPubKeyLen);
pszPubKey[iPubKeyLen] = '\0';
FILE *fp = fopen(pszDestinationFile,"wb ,ccs = UTF-8");
if(!fp)
{
bSuccess = 0;
goto Cleanup;
}
if(!fwrite(pszPubKey,sizeof(char)* (iPubKeyLen + 1),1,fp))
{
bSuccess = 0;
goto Cleanup;
}
fclose(fp);
pEncryptData = new unsigned char [RSA_size(pKeyPair)];
if(!RSA_private_encrypt(strlen(pszData) + 1,(unsigned char *)pszData,pEncryptData,pKeyPair,RSA_PKCS1_OAEP_PADDING))
{
bSuccess = 0;
goto Cleanup;
}
fp = fopen(pszDestinationFile1,"wb ,ccs = UTF-8");
if(!fp)
{
bSuccess = 0;
goto Cleanup;
}
if(!fwrite(pEncryptData,RSA_size(pKeyPair),1,fp))
{
bSuccess = 0;
goto Cleanup;
}
fclose(fp);
Cleanup:
if(pBigNumber)
{
BN_free(pBigNumber);
}
if(pKeyPair)
{
RSA_free(pKeyPair);
}
if(pBioPub)
{
BIO_free_all(pBioPub);
}
if(pszPubKey)
{
delete [] pszPubKey;
}
if(pEncryptData)
{
delete [] pEncryptData;
}
return bSuccess;
}
double FindEntropy(unsigned char *pData, int iDataNum)
{
memset(uiTable,0,sizeof(uiTable));
ReadData(pData,iDataNum);
double dEntropy = Analyze(iDataNum);
return dEntropy;
}
void ReadData(unsigned char *pData, int iLength)
{
int ch;
for(int i = 0; i < iLength; i++)
{
ch = pData[i];
uiTable[ch]++;
}
}
double Analyze(int iDataNum)
{
double dAccum = 0.0;
double dFreq;
register int z;
for(z = 0; z < BUFFER_LENGTH; z++)
{
if(uiTable[z])
{
dFreq = (double) uiTable[z]/iDataNum;
dAccum += (double) ENTROPY(dFreq);
}
}
return dAccum;
}
int GenerateRandomString(char *pszString,int nLength)
{
unsigned int iNumber;
int iCount = 0;
if(rand_s(&iNumber))
{
return 0;
}
while(iCount < nLength)
{
int iChar = iNumber % 256;
if(isprint(iChar) && !isspace(iChar))
{
pszString[iCount] = (char)iChar;
iCount++;
}
if(rand_s(&iNumber))
{
return 0;
}
}
pszString[nLength] = '\0';
return 1;
}
Public Key file follows:
-----BEGIN RSA PUBLIC KEY-----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==
-----END RSA PUBLIC KEY-----
Encrypted message follows:
ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ
I dont think the above encrypted message can be the correct encrypted message.
RSA_private_encrypt returns -1 for error.
You may have other mistakes but that one stands out.
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