package com.neohope.utils;
import java.io.IOException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import javax.crypto.Mac;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
public class NDigest
{
/**
* Bytes to Hex String
*
* @param hexBytes
*
* @return hex string
*/
private static String bytesToHexString(byte[] hexBytes)
{
StringBuffer buf = new StringBuffer();
for (int i = 0; i < hexBytes.length; i++)
{
if ((hexBytes[i] & 0xff) < 0x10)
{
buf.append("0");
}
buf.append(Long.toString(hexBytes[i] & 0xff, 16));
}
return buf.toString();
}
/**
* calc MD5 for string
*
* @param textIn
*
* @return md5 digest string
* @throws NoSuchAlgorithmException
*/
public static String MD5Digest(String textIn)
throws NoSuchAlgorithmException
{
byte[] textData = textIn.getBytes();
MessageDigest md = null;
md = MessageDigest.getInstance("MD5");
md.reset();
md.update(textData);
byte[] encodedData = md.digest();
return bytesToHexString(encodedData);
}
/**
* calc SHA1 for string
*
* @param textIn
*
* @return sha1 digest string
* @throws NoSuchAlgorithmException
*/
public static String SHA1Digest(String textIn)
throws NoSuchAlgorithmException
{
byte[] textData = textIn.getBytes();
MessageDigest md = null;
md = MessageDigest.getInstance("SHA1");
md.reset();
md.update(textData);
byte[] encodedData = md.digest();
return bytesToHexString(encodedData);
}
/**
* Encode a string using Base64 encoding.
*
* @param textIn
* @return String
*/
public static String base64Encode(String textIn)
{
sun.misc.BASE64Encoder encoder = new sun.misc.BASE64Encoder();
return encoder.encodeBuffer(textIn.getBytes()).trim();
}
/**
* Decode a string using Base64 encoding.
*
* @param textIn
* @return String
* @throws IOException
*/
public static String decodeString(String textIn) throws IOException
{
sun.misc.BASE64Decoder dec = new sun.misc.BASE64Decoder();
return new String(dec.decodeBuffer(textIn));
}
/**
* 使用 HMAC-SHA-1 签名方法对对textIn进行摘要
*
* @param textIn
* @param keyIn
* @return
* @throws Exception
*/
public static String HmacSHA1Digest(String textIn, String keyIn)
throws Exception
{
final String MAC_NAME = "HmacSHA1";
final String ENCODING = "UTF-8";
byte[] keyData = keyIn.getBytes(ENCODING);
SecretKey secretKey = new SecretKeySpec(keyData, MAC_NAME);
Mac mac = Mac.getInstance(MAC_NAME);
mac.init(secretKey);
byte[] textData = textIn.getBytes(ENCODING);
byte[] encodedData = mac.doFinal(textData);
return bytesToHexString(encodedData);
}
// 我就是那个测试函数。。。
public static void main(String args[]) throws Exception
{
String key = "Y9zTQxRvxwrHOi45OoKNnIoxboerNqt3";
String text = "Good good study, day day up.";
String hmacSHA1 = HmacSHA1Digest(text, key );
String base64 = base64Encode(hmacSHA1);
System.out.println(hmacSHA1 );
System.out.println(cbase64);
}
}
Tag Archives: Digest
VC计算CString摘要
1、VC计算字符串MD5摘要
//输入：要计算摘要的字符串
//输出：128位MD5摘要
#include <wincrypt.h>
CString szResult;
CString CDigestDlg::CalcMD5(CString strContent)
{
DWORD dwLength=0;
BYTE* pbContent=NULL;
dwLength = (DWORD)strContent.GetLength();
pbContent = new BYTE[dwLength];
memcpy(pbContent,strContent.GetBuffer(dwLength),dwLength);
//计算MD5编码
HCRYPTPROV hCryptProv;
HCRYPTHASH hHash;
BYTE byteMD5[16];
DWORD dwHashLen=16;
CString szResult;
if(CryptAcquireContext(&hCryptProv, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT | CRYPT_MACHINE_KEYSET))
{
if(CryptCreateHash(hCryptProv, CALG_MD5, 0, 0, &hHash))
{
if(CryptHashData(hHash, pbContent, dwLength, 0))
{
if(CryptGetHashParam(hHash, HP_HASHVAL, byteMD5, &dwHashLen, 0))
{
szResult.Format(TEXT("%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x"),
byteMD5[0],byteMD5[1],byteMD5[2],byteMD5[3],byteMD5[4],byteMD5[5],byteMD5[6],byteMD5[7]
,byteMD5[8],byteMD5[9],byteMD5[10],byteMD5[11],byteMD5[12],byteMD5[13],byteMD5[14],byteMD5[15]);
}
else
{
szResult=TEXT("Error getting hash param");
}
}
else
{
szResult=TEXT("Error hashing data");
}
}
else
{
szResult=TEXT("Error creating hash");
}
}
else
{
szResult=TEXT("Error acquiring context");
}
CryptDestroyHash(hHash);
CryptReleaseContext(hCryptProv, 0);
delete[] pbContent;
pbContent=NULL;
return szResult;
}
2、VC计算字符串SHA1摘要
//输入：要计算摘要的字符串
//输出：160位SHA1摘要
#include <wincrypt.h>
CString szResult;
CString CDigestDlg::CalcSHA1(CString strContent)
{
DWORD dwLength=0;
BYTE* pbContent=NULL;
dwLength = (DWORD)strContent.GetLength();
pbContent = new BYTE[dwLength];
memcpy(pbContent,strContent.GetBuffer(dwLength),dwLength);
//计算MD5编码
HCRYPTPROV hCryptProv;
HCRYPTHASH hHash;
BYTE byteSHA1[20];
DWORD dwHashLen=20;
CString szResult;
if(CryptAcquireContext(&hCryptProv, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT | CRYPT_MACHINE_KEYSET))
{
if(CryptCreateHash(hCryptProv, CALG_SHA1, 0, 0, &hHash))
{
if(CryptHashData(hHash, pbContent, dwLength, 0))
{
if(CryptGetHashParam(hHash, HP_HASHVAL, byteSHA1, &dwHashLen, 0))
{
szResult.Format(TEXT("%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x"),
byteSHA1[0],byteSHA1[1],byteSHA1[2],byteSHA1[3],byteSHA1[4],byteSHA1[5],byteSHA1[6],byteSHA1[7],
byteSHA1[8],byteSHA1[9],byteSHA1[10],byteSHA1[11],byteSHA1[12],byteSHA1[13],byteSHA1[14],byteSHA1[15],
byteSHA1[16],byteSHA1[17],byteSHA1[18],byteSHA1[19]);
}
else
{
szResult=TEXT("Error getting hash param");
}
}
else
{
szResult=TEXT("Error hashing data");
}
}
else
{
szResult=TEXT("Error creating hash");
}
}
else
{
szResult=TEXT("Error acquiring context");
}
CryptDestroyHash(hHash);
CryptReleaseContext(hCryptProv, 0);
delete[] pbContent;
pbContent=NULL;
return szResult;
}
VC计算文件摘要
1、VC计算文件MD5摘要
//输入：文件路径
//输出：128位MD5摘要
#include <wincrypt.h>
CString szResult;
CString CMD5AndSHA1Dlg::CalcMD5(CString strFilePath)
{
//读取文件
CFile inFile;
CFileException ex;
DWORD dwLength=0;
BYTE* pbContent=NULL;
BOOL bRet;
bRet=inFile.Open(strFilePath,CFile::modeRead | CFile::typeBinary | CFile::shareDenyWrite,&ex);
if(bRet==FALSE)
{
return TEXT("Error opening file");;
}
dwLength = (DWORD)inFile.GetLength();
pbContent = new BYTE[dwLength];
if(pbContent==NULL)
{
return TEXT("Error not enough memory");;
}
inFile.Read(pbContent,dwLength);
inFile.Close();
//计算MD5编码
HCRYPTPROV hCryptProv;
HCRYPTHASH hHash;
BYTE byteMD5[16];
DWORD dwHashLen=16;
CString szResult;
if(CryptAcquireContext(&hCryptProv, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT | CRYPT_MACHINE_KEYSET))
{
if(CryptCreateHash(hCryptProv, CALG_MD5, 0, 0, &hHash))
{
if(CryptHashData(hHash, pbContent, dwLength, 0))
{
if(CryptGetHashParam(hHash, HP_HASHVAL, byteMD5, &dwHashLen, 0))
{
szResult.Format(TEXT("%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x"),
byteMD5[0],byteMD5[1],byteMD5[2],byteMD5[3],byteMD5[4],byteMD5[5],byteMD5[6],byteMD5[7]
,byteMD5[8],byteMD5[9],byteMD5[10],byteMD5[11],byteMD5[12],byteMD5[13],byteMD5[14],byteMD5[15]);
}
else
{
szResult=TEXT("Error getting hash param");
}
}
else
{
szResult=TEXT("Error hashing data");
}
}
else
{
szResult=TEXT("Error creating hash");
}
}
else
{
szResult=TEXT("Error acquiring context");
}
CryptDestroyHash(hHash);
CryptReleaseContext(hCryptProv, 0);
delete[] pbContent;
pbContent=NULL;
return szResult;
}
2、VC计算文件SHA1摘要
//输入：文件路径(文件必须小于2^64bit)
//输出：160位SHA1摘要
#include <wincrypt.h>
CString szResult;
CString CMD5AndSHA1Dlg::CalcSHA1(CString strFilePath)
{
//读取文件
CFile inFile;
CFileException ex;
DWORD dwLength=0;
BYTE* pbContent=NULL;
BOOL bRet;
bRet=inFile.Open(strFilePath,CFile::modeRead | CFile::typeBinary | CFile::shareDenyWrite,&ex);
if(bRet==FALSE)
{
return TEXT("Error opening file");;
}
dwLength = (DWORD)inFile.GetLength();
pbContent = new BYTE[dwLength];
if(pbContent==NULL)
{
return TEXT("Error not enough memory");;
}
inFile.Read(pbContent,dwLength);
inFile.Close();
//计算MD5编码
HCRYPTPROV hCryptProv;
HCRYPTHASH hHash;
BYTE byteSHA1[20];
DWORD dwHashLen=20;
CString szResult;
if(CryptAcquireContext(&hCryptProv, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT | CRYPT_MACHINE_KEYSET))
{
if(CryptCreateHash(hCryptProv, CALG_SHA1, 0, 0, &hHash))
{
if(CryptHashData(hHash, pbContent, dwLength, 0))
{
if(CryptGetHashParam(hHash, HP_HASHVAL, byteSHA1, &dwHashLen, 0))
{
szResult.Format(TEXT("%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x"),
byteSHA1[0],byteSHA1[1],byteSHA1[2],byteSHA1[3],byteSHA1[4],byteSHA1[5],byteSHA1[6],byteSHA1[7],
byteSHA1[8],byteSHA1[9],byteSHA1[10],byteSHA1[11],byteSHA1[12],byteSHA1[13],byteSHA1[14],byteSHA1[15],
byteSHA1[16],byteSHA1[17],byteSHA1[18],byteSHA1[19]);
}
else
{
szResult=TEXT("Error getting hash param");
}
}
else
{
szResult=TEXT("Error hashing data");
}
}
else
{
szResult=TEXT("Error creating hash");
}
}
else
{
szResult=TEXT("Error acquiring context");
}
CryptDestroyHash(hHash);
CryptReleaseContext(hCryptProv, 0);
delete[] pbContent;
pbContent=NULL;
return szResult;
}