目錄
介紹
概要背景
秘鑰情況
SM1
SM2
SM3
SM4
國密算法的安全性
SM1算法：
SM2算法：
SM3算法：
SM4算法：
實作
依賴
公共使用類
Cipher
uitl 類
sm2代碼
SM2 類
SM2Utils
sm3 代碼
SM3
SM3Digest
SM3Test
日志
SM4代碼
SM4
SM4_Context
SM4Uitls jdk1.7 和 1.8 這裡有變化 對base64 的類 代碼中有提示
TESTSm4
日志
介紹
概要背景
随着金融安全上升到國家安全高度，近年來國家有關機關和監管機構站在國家安全和長遠戰略的高度提出了推動國密算法應用實施
密碼算法是保障資訊安全的核心技術，尤其是最關鍵的銀行業核心領域長期以來都是沿用3DES、SHA-1、RSA等國際通用的密碼算法體系及相關标準。2010年底，國家密碼管理局公布了我國自主研制的“橢圓曲線公鑰密碼算法”（SM2算法）。為保障重要經濟系統密碼應用安全，國家密碼管理局于2011年釋出了《關于做好公鑰密碼算法更新工作的通知》，要求“自2011年3月1日起，在建和拟建公鑰密碼基礎設施電子認證系統和密鑰管理系統應使用國密算法。自2011年7月1日起，投入運作并使用公鑰密碼的資訊系統，應使用SM2算法。”
秘鑰情況
作者 蔣浩宇
SM1
為對稱加密。其加密強度與AES相當。該算法不公開，調用該算法時，需要通過加密晶片的接口進行調用。
SM2
為非對稱加密，基于ECC。該算法已公開。由于該算法基于ECC，故其簽名速度與秘鑰生成速度都快于RSA。ECC 256位（SM2采用的就是ECC 256位的一種）安全強度比RSA 2048位高，但運算速度快于RSA。
SM3
消息摘要。可以用MD5作為對比了解。該算法已公開。校驗結果為256位。
SM4
無線區域網路标準的分組資料算法。對稱加密，密鑰長度和分組長度均為128位。
- 由于SM1、SM4加解密的分組大小為128bit，故對消息進行加解密時，若消息長度過長，需要進行分組，要消息長度不足，則要進行填充。
國密算法的安全性
SM1算法：
非開源 需要通過加密晶片的接口進行調用
SM2算法：
SM3算法：
SM4算法：
實作
依賴
<dependency>
<groupId>org.bouncycastle</groupId>
<artifactId>bcprov-jdk15on</artifactId>
<version>1.46</version>
</dependency> sm2 用的是 1.46 版本 sm3 sm4 用的是 1.64 版本
公共使用類
Cipher
package jianghaoyu.security;
import java.math.BigInteger;
import org.bouncycastle.crypto.AsymmetricCipherKeyPair;
import org.bouncycastle.crypto.params.ECPrivateKeyParameters;
import org.bouncycastle.crypto.params.ECPublicKeyParameters;
import org.bouncycastle.math.ec.ECPoint;
import jianghaoyu.security.sm2.SM2;
import jianghaoyu.security.sm3.SM3Digest;
/***
* @author jianghaoyu
*/
public class Cipher {
private int ct;
private ECPoint p2;
private SM3Digest sm3keybase;
private SM3Digest sm3c3;
private byte key[];
private byte keyOff;
public Cipher()
{
this.ct = 1;
this.key = new byte[32];
this.keyOff = 0;
}
private void Reset()
{
this.sm3keybase = new SM3Digest();
this.sm3c3 = new SM3Digest();
// byte p[] = Util.byteConvert32Bytes(p2.getX().toBigInteger());
byte p[] = Util.byteConvert32Bytes(p2.getXCoord().toBigInteger());
this.sm3keybase.update(p, 0, p.length);
this.sm3c3.update(p, 0, p.length);
p = Util.byteConvert32Bytes(p2.getYCoord().toBigInteger());
this.sm3keybase.update(p, 0, p.length);
this.ct = 1;
NextKey();
}
private void NextKey()
{
SM3Digest sm3keycur = new SM3Digest(this.sm3keybase);
sm3keycur.update((byte) (ct >> 24 & 0xff));
sm3keycur.update((byte) (ct >> 16 & 0xff));
sm3keycur.update((byte) (ct >> 8 & 0xff));
sm3keycur.update((byte) (ct & 0xff));
sm3keycur.doFinal(key, 0);
this.keyOff = 0;
this.ct++;
}
public ECPoint Init_enc(SM2 sm2, ECPoint userKey)
{
AsymmetricCipherKeyPair key = sm2.ecc_key_pair_generator.generateKeyPair();
ECPrivateKeyParameters ecpriv = (ECPrivateKeyParameters) key.getPrivate();
ECPublicKeyParameters ecpub = (ECPublicKeyParameters) key.getPublic();
BigInteger k = ecpriv.getD();
ECPoint c1 = ecpub.getQ();
this.p2 = userKey.multiply(k);
Reset();
return c1;
}
public void Encrypt(byte data[])
{
this.sm3c3.update(data, 0, data.length);
for (int i = 0; i < data.length; i++)
{
if (keyOff == key.length)
{
NextKey();
}
data[i] ^= key[keyOff++];
}
}
public void Init_dec(BigInteger userD, ECPoint c1)
{
this.p2 = c1.multiply(userD);
Reset();
}
public void Decrypt(byte data[])
{
for (int i = 0; i < data.length; i++)
{
if (keyOff == key.length)
{
NextKey();
}
data[i] ^= key[keyOff++];
}
this.sm3c3.update(data, 0, data.length);
}
public void Dofinal(byte c3[])
{
byte p[] = Util.byteConvert32Bytes(p2.getYCoord().toBigInteger());
this.sm3c3.update(p, 0, p.length);
this.sm3c3.doFinal(c3, 0);
Reset();
}
} uitl 類
package jianghaoyu.security;
import java.math.BigInteger;
/***
* @author jianghaoyu
*/
public class Util {
/**
* 整形轉換成網絡傳輸的位元組流（位元組數組）型資料
*
* @param num 一個整型資料
* @return 4個位元組的自己數組
*/
public static byte[] intToBytes(int num)
{
byte[] bytes = new byte[4];
bytes[0] = (byte) (0xff & (num >> 0));
bytes[1] = (byte) (0xff & (num >> 8));
bytes[2] = (byte) (0xff & (num >> 16));
bytes[3] = (byte) (0xff & (num >> 24));
return bytes;
}
/**
* 四個位元組的位元組資料轉換成一個整形資料
*
* @param bytes 4個位元組的位元組數組
* @return 一個整型資料
*/
public static int byteToInt(byte[] bytes)
{
int num = 0;
int temp;
temp = (0x000000ff & (bytes[0])) << 0;
num = num | temp;
temp = (0x000000ff & (bytes[1])) << 8;
num = num | temp;
temp = (0x000000ff & (bytes[2])) << 16;
num = num | temp;
temp = (0x000000ff & (bytes[3])) << 24;
num = num | temp;
return num;
}
/**
* 長整形轉換成網絡傳輸的位元組流（位元組數組）型資料
*
* @param num 一個長整型資料
* @return 4個位元組的自己數組
*/
public static byte[] longToBytes(long num)
{
byte[] bytes = new byte[8];
for (int i = 0; i < 8; i++)
{
bytes[i] = (byte) (0xff & (num >> (i * 8)));
}
return bytes;
}
/**
* 大數字轉換位元組流（位元組數組）型資料
*
* @param n
* @return
*/
public static byte[] byteConvert32Bytes(BigInteger n)
{
byte tmpd[] = (byte[])null;
if(n == null)
{
return null;
}
if(n.toByteArray().length == 33)
{
tmpd = new byte[32];
System.arraycopy(n.toByteArray(), 1, tmpd, 0, 32);
}
else if(n.toByteArray().length == 32)
{
tmpd = n.toByteArray();
}
else
{
tmpd = new byte[32];
for(int i = 0; i < 32 - n.toByteArray().length; i++)
{
tmpd[i] = 0;
}
System.arraycopy(n.toByteArray(), 0, tmpd, 32 - n.toByteArray().length, n.toByteArray().length);
}
return tmpd;
}
/**
* 換位元組流（位元組數組）型資料轉大數字
*
* @param b
* @return
*/
public static BigInteger byteConvertInteger(byte[] b)
{
if (b[0] < 0)
{
byte[] temp = new byte[b.length + 1];
temp[0] = 0;
System.arraycopy(b, 0, temp, 1, b.length);
return new BigInteger(temp);
}
return new BigInteger(b);
}
/**
* 根據位元組數組獲得值(十六進制數字)
*
* @param bytes
* @return
*/
public static String getHexString(byte[] bytes)
{
return getHexString(bytes, true);
}
/**
* 根據位元組數組獲得值(十六進制數字)
*
* @param bytes
* @param upperCase
* @return
*/
public static String getHexString(byte[] bytes, boolean upperCase)
{
String ret = "";
for (int i = 0; i < bytes.length; i++)
{
ret += Integer.toString((bytes[i] & 0xff) + 0x100, 16).substring(1);
}
return upperCase ? ret.toUpperCase() : ret;
}
/**
* 列印十六進制字元串
*
* @param bytes
*/
public static void printHexString(byte[] bytes)
{
for (int i = 0; i < bytes.length; i++)
{
String hex = Integer.toHexString(bytes[i] & 0xFF);
if (hex.length() == 1)
{
hex = '0' + hex;
}
System.out.print("0x" + hex.toUpperCase() + ",");
}
System.out.println("");
}
/**
* Convert hex string to byte[]
*
* @param hexString
* the hex string
* @return byte[]
*/
public static byte[] hexStringToBytes(String hexString)
{
if (hexString == null || hexString.equals(""))
{
return null;
}
hexString = hexString.toUpperCase();
int length = hexString.length() / 2;
char[] hexChars = hexString.toCharArray();
byte[] d = new byte[length];
for (int i = 0; i < length; i++)
{
int pos = i * 2;
d[i] = (byte) (charToByte(hexChars[pos]) << 4 | charToByte(hexChars[pos + 1]));
}
return d;
}
/**
* Convert char to byte
*
* @param c
* char
* @return byte
*/
public static byte charToByte(char c)
{
return (byte) "0123456789ABCDEF".indexOf(c);
}
/**
* 用于建立十六進制字元的輸出的小寫字元數組
*/
private static final char[] DIGITS_LOWER = {'0', '1', '2', '3', '4', '5',
'6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
/**
* 用于建立十六進制字元的輸出的大寫字元數組
*/
private static final char[] DIGITS_UPPER = {'0', '1', '2', '3', '4', '5',
'6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
/**
* 将位元組數組轉換為十六進制字元數組
*
* @param data byte[]
* @return 十六進制char[]
*/
public static char[] encodeHex(byte[] data) {
return encodeHex(data, true);
}
/**
* 将位元組數組轉換為十六進制字元數組
*
* @param data byte[]
* @param toLowerCase <code>true</code> 傳換成小寫格式 ， <code>false</code> 傳換成大寫格式
* @return 十六進制char[]
*/
public static char[] encodeHex(byte[] data, boolean toLowerCase) {
return encodeHex(data, toLowerCase ? DIGITS_LOWER : DIGITS_UPPER);
}
/**
* 将位元組數組轉換為十六進制字元數組
*
* @param data byte[]
* @param toDigits 用于控制輸出的char[]
* @return 十六進制char[]
*/
protected static char[] encodeHex(byte[] data, char[] toDigits) {
int l = data.length;
char[] out = new char[l << 1];
// two characters form the hex value.
for (int i = 0, j = 0; i < l; i++) {
out[j++] = toDigits[(0xF0 & data[i]) >>> 4];
out[j++] = toDigits[0x0F & data[i]];
}
return out;
}
/**
* 将位元組數組轉換為十六進制字元串
*
* @param data byte[]
* @return 十六進制String
*/
public static String encodeHexString(byte[] data) {
return encodeHexString(data, true);
}
/**
* 将位元組數組轉換為十六進制字元串
*
* @param data byte[]
* @param toLowerCase <code>true</code> 傳換成小寫格式 ， <code>false</code> 傳換成大寫格式
* @return 十六進制String
*/
public static String encodeHexString(byte[] data, boolean toLowerCase) {
return encodeHexString(data, toLowerCase ? DIGITS_LOWER : DIGITS_UPPER);
}
/**
* 将位元組數組轉換為十六進制字元串
*
* @param data byte[]
* @param toDigits 用于控制輸出的char[]
* @return 十六進制String
*/
protected static String encodeHexString(byte[] data, char[] toDigits) {
return new String(encodeHex(data, toDigits));
}
/**
* 将十六進制字元數組轉換為位元組數組
*
* @param data 十六進制char[]
* @return byte[]
* @throws RuntimeException 如果源十六進制字元數組是一個奇怪的長度，将抛出運作時異常
*/
public static byte[] decodeHex(char[] data) {
int len = data.length;
if ((len & 0x01) != 0) {
throw new RuntimeException("Odd number of characters.");
}
byte[] out = new byte[len >> 1];
// two characters form the hex value.
for (int i = 0, j = 0; j < len; i++) {
int f = toDigit(data[j], j) << 4;
j++;
f = f | toDigit(data[j], j);
j++;
out[i] = (byte) (f & 0xFF);
}
return out;
}
/**
* 将十六進制字元轉換成一個整數
*
* @param ch 十六進制char
* @param index 十六進制字元在字元數組中的位置
* @return 一個整數
* @throws RuntimeException 當ch不是一個合法的十六進制字元時，抛出運作時異常
*/
protected static int toDigit(char ch, int index) {
int digit = Character.digit(ch, 16);
if (digit == -1) {
throw new RuntimeException("Illegal hexadecimal character " + ch
+ " at index " + index);
}
return digit;
}
/**
* 數字字元串轉ASCII碼字元串
*
* @param String
* 字元串
* @return ASCII字元串
*/
public static String StringToAsciiString(String content) {
String result = "";
int max = content.length();
for (int i = 0; i < max; i++) {
char c = content.charAt(i);
String b = Integer.toHexString(c);
result = result + b;
}
return result;
}
/**
* 十六進制轉字元串
*
* @param hexString
* 十六進制字元串
* @param encodeType
* 編碼類型4：Unicode，2：普通編碼
* @return 字元串
*/
public static String hexStringToString(String hexString, int encodeType) {
String result = "";
int max = hexString.length() / encodeType;
for (int i = 0; i < max; i++) {
char c = (char) hexStringToAlgorism(hexString
.substring(i * encodeType, (i + 1) * encodeType));
result += c;
}
return result;
}
/**
* 十六進制字元串裝十進制
*
* @param hex
* 十六進制字元串
* @return 十進制數值
*/
public static int hexStringToAlgorism(String hex) {
hex = hex.toUpperCase();
int max = hex.length();
int result = 0;
for (int i = max; i > 0; i--) {
char c = hex.charAt(i - 1);
int algorism = 0;
if (c >= '0' && c <= '9') {
algorism = c - '0';
} else {
algorism = c - 55;
}
result += Math.pow(16, max - i) * algorism;
}
return result;
}
/**
* 十六轉二進制
*
* @param hex
* 十六進制字元串
* @return 二進制字元串
*/
public static String hexStringToBinary(String hex) {
hex = hex.toUpperCase();
String result = "";
int max = hex.length();
for (int i = 0; i < max; i++) {
char c = hex.charAt(i);
switch (c) {
case '0':
result += "0000";
break;
case '1':
result += "0001";
break;
case '2':
result += "0010";
break;
case '3':
result += "0011";
break;
case '4':
result += "0100";
break;
case '5':
result += "0101";
break;
case '6':
result += "0110";
break;
case '7':
result += "0111";
break;
case '8':
result += "1000";
break;
case '9':
result += "1001";
break;
case 'A':
result += "1010";
break;
case 'B':
result += "1011";
break;
case 'C':
result += "1100";
break;
case 'D':
result += "1101";
break;
case 'E':
result += "1110";
break;
case 'F':
result += "1111";
break;
}
}
return result;
}
/**
* ASCII碼字元串轉數字字元串
*
* @param String
* ASCII字元串
* @return 字元串
*/
public static String AsciiStringToString(String content) {
String result = "";
int length = content.length() / 2;
for (int i = 0; i < length; i++) {
String c = content.substring(i * 2, i * 2 + 2);
int a = hexStringToAlgorism(c);
char b = (char) a;
String d = String.valueOf(b);
result += d;
}
return result;
}
/**
* 将十進制轉換為指定長度的十六進制字元串
*
* @param algorism
* int 十進制數字
* @param maxLength
* int 轉換後的十六進制字元串長度
* @return String 轉換後的十六進制字元串
*/
public static String algorismToHexString(int algorism, int maxLength) {
String result = "";
result = Integer.toHexString(algorism);
if (result.length() % 2 == 1) {
result = "0" + result;
}
return patchHexString(result.toUpperCase(), maxLength);
}
/**
* 位元組數組轉為普通字元串（ASCII對應的字元）
*
* @param bytearray
* byte[]
* @return String
*/
public static String byteToString(byte[] bytearray) {
String result = "";
char temp;
int length = bytearray.length;
for (int i = 0; i < length; i++) {
temp = (char) bytearray[i];
result += temp;
}
return result;
}
/**
* 二進制字元串轉十進制
*
* @param binary
* 二進制字元串
* @return 十進制數值
*/
public static int binaryToAlgorism(String binary) {
int max = binary.length();
int result = 0;
for (int i = max; i > 0; i--) {
char c = binary.charAt(i - 1);
int algorism = c - '0';
result += Math.pow(2, max - i) * algorism;
}
return result;
}
/**
* 十進制轉換為十六進制字元串
*
* @param algorism
* int 十進制的數字
* @return String 對應的十六進制字元串
*/
public static String algorismToHEXString(int algorism) {
String result = "";
result = Integer.toHexString(algorism);
if (result.length() % 2 == 1) {
result = "0" + result;
}
result = result.toUpperCase();
return result;
}
/**
* HEX字元串前補0，主要用于長度位數不足。
*
* @param str
* String 需要補充長度的十六進制字元串
* @param maxLength
* int 補充後十六進制字元串的長度
* @return 補充結果
*/
static public String patchHexString(String str, int maxLength) {
String temp = "";
for (int i = 0; i < maxLength - str.length(); i++) {
temp = "0" + temp;
}
str = (temp + str).substring(0, maxLength);
return str;
}
/**
* 将一個字元串轉換為int
*
* @param s
* String 要轉換的字元串
* @param defaultInt
* int 如果出現異常,預設傳回的數字
* @param radix
* int 要轉換的字元串是什麼進制的,如16 8 10.
* @return int 轉換後的數字
*/
public static int parseToInt(String s, int defaultInt, int radix) {
int i = 0;
try {
i = Integer.parseInt(s, radix);
} catch (NumberFormatException ex) {
i = defaultInt;
}
return i;
}
/**
* 将一個十進制形式的數字字元串轉換為int
*
* @param s
* String 要轉換的字元串
* @param defaultInt
* int 如果出現異常,預設傳回的數字
* @return int 轉換後的數字
*/
public static int parseToInt(String s, int defaultInt) {
int i = 0;
try {
i = Integer.parseInt(s);
} catch (NumberFormatException ex) {
i = defaultInt;
}
return i;
}
/**
* 十六進制串轉化為byte數組
*
* @return the array of byte
*/
public static byte[] hexToByte(String hex)
throws IllegalArgumentException {
if (hex.length() % 2 != 0) {
throw new IllegalArgumentException();
}
char[] arr = hex.toCharArray();
byte[] b = new byte[hex.length() / 2];
for (int i = 0, j = 0, l = hex.length(); i < l; i++, j++) {
String swap = "" + arr[i++] + arr[i];
int byteint = Integer.parseInt(swap, 16) & 0xFF;
b[j] = new Integer(byteint).byteValue();
}
return b;
}
/**
* 位元組數組轉換為十六進制字元串
*
* @param b
* byte[] 需要轉換的位元組數組
* @return String 十六進制字元串
*/
public static String byteToHex(byte b[]) {
if (b == null) {
throw new IllegalArgumentException(
"Argument b ( byte array ) is null! ");
}
String hs = "";
String stmp = "";
for (int n = 0; n < b.length; n++) {
stmp = Integer.toHexString(b[n] & 0xff);
if (stmp.length() == 1) {
hs = hs + "0" + stmp;
} else {
hs = hs + stmp;
}
}
return hs.toUpperCase();
}
public static byte[] subByte(byte[] input, int startIndex, int length) {
byte[] bt = new byte[length];
for (int i = 0; i < length; i++) {
bt[i] = input[i + startIndex];
}
return bt;
}
} sm2代碼
SM2 類
package jianghaoyu.security.sm2;
import java.math.BigInteger;
import java.security.SecureRandom;
import org.bouncycastle.crypto.generators.ECKeyPairGenerator;
import org.bouncycastle.crypto.params.ECDomainParameters;
import org.bouncycastle.crypto.params.ECKeyGenerationParameters;
import org.bouncycastle.math.ec.ECCurve;
import org.bouncycastle.math.ec.ECFieldElement;
import org.bouncycastle.math.ec.ECPoint;
import org.bouncycastle.math.ec.ECFieldElement.Fp;
/***
* @author YU.JIANGHAO
*/
public class SM2 {
//測試參數
// public static final String[] ecc_param = {
// "8542D69E4C044F18E8B92435BF6FF7DE457283915C45517D722EDB8B08F1DFC3",
// "787968B4FA32C3FD2417842E73BBFEFF2F3C848B6831D7E0EC65228B3937E498",
// "63E4C6D3B23B0C849CF84241484BFE48F61D59A5B16BA06E6E12D1DA27C5249A",
// "8542D69E4C044F18E8B92435BF6FF7DD297720630485628D5AE74EE7C32E79B7",
// "421DEBD61B62EAB6746434EBC3CC315E32220B3BADD50BDC4C4E6C147FEDD43D",
// "0680512BCBB42C07D47349D2153B70C4E5D7FDFCBFA36EA1A85841B9E46E09A2"
// };
//正式參數
public static String[] ecc_param = {
"FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00000000FFFFFFFFFFFFFFFF",
"FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00000000FFFFFFFFFFFFFFFC",
"28E9FA9E9D9F5E344D5A9E4BCF6509A7F39789F515AB8F92DDBCBD414D940E93",
"FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFF7203DF6B21C6052B53BBF40939D54123",
"32C4AE2C1F1981195F9904466A39C9948FE30BBFF2660BE1715A4589334C74C7",
"BC3736A2F4F6779C59BDCEE36B692153D0A9877CC62A474002DF32E52139F0A0"
};
public static SM2 Instance()
{
return new SM2();
}
public final BigInteger ecc_p;
public final BigInteger ecc_a;
public final BigInteger ecc_b;
public final BigInteger ecc_n;
public final BigInteger ecc_gx;
public final BigInteger ecc_gy;
public final ECCurve ecc_curve;
// public final ECPoint ecc_point_g;
// public final ECDomainParameters ecc_bc_spec;
public final ECKeyPairGenerator ecc_key_pair_generator;
public final ECFieldElement ecc_gx_fieldelement;
public final ECFieldElement ecc_gy_fieldelement;
public SM2()
{
this.ecc_p = new BigInteger(ecc_param[0], 16);
this.ecc_a = new BigInteger(ecc_param[1], 16);
this.ecc_b = new BigInteger(ecc_param[2], 16);
this.ecc_n = new BigInteger(ecc_param[3], 16);
this.ecc_gx = new BigInteger(ecc_param[4], 16);
this.ecc_gy = new BigInteger(ecc_param[5], 16);
this.ecc_gx_fieldelement = new Fp(this.ecc_p, this.ecc_gx);
this.ecc_gy_fieldelement = new Fp(this.ecc_p, this.ecc_gy);
this.ecc_curve = new ECCurve.Fp(this.ecc_p, this.ecc_a, this.ecc_b);
// this.ecc_point_g = new ECPoint.Fp(this.ecc_curve, this.ecc_gx_fieldelement, this.ecc_gy_fieldelement);
// this.ecc_bc_spec = new ECDomainParameters(this.ecc_curve, this.ecc_point_g, this.ecc_n);
ECKeyGenerationParameters ecc_ecgenparam;
// ecc_ecgenparam = new ECKeyGenerationParameters(this.ecc_bc_spec, new SecureRandom());
this.ecc_key_pair_generator = new ECKeyPairGenerator();
// this.ecc_key_pair_generator.init(ecc_ecgenparam);
}
} SM2Utils
package jianghaoyu.security.sm2;
import java.io.IOException;
import java.math.BigInteger;
import org.bouncycastle.crypto.AsymmetricCipherKeyPair;
import org.bouncycastle.crypto.params.ECPrivateKeyParameters;
import org.bouncycastle.crypto.params.ECPublicKeyParameters;
import org.bouncycastle.math.ec.ECPoint;
import jianghaoyu.security.Cipher;
import jianghaoyu.security.Util;
/***
* 國密碼 sm
* @author jianghaoyu
*/
public class SM2Utils {
//生成随機秘鑰對
public static void generateKeyPair(){
SM2 sm2 = SM2.Instance();
AsymmetricCipherKeyPair key = sm2.ecc_key_pair_generator.generateKeyPair();
ECPrivateKeyParameters ecpriv = (ECPrivateKeyParameters) key.getPrivate();
ECPublicKeyParameters ecpub = (ECPublicKeyParameters) key.getPublic();
BigInteger privateKey = ecpriv.getD();
ECPoint publicKey = ecpub.getQ();
// System.out.println("公鑰: " + Util.byteToHex(publicKey.getEncoded()));//1.46
System.out.println("公鑰: " + Util.byteToHex(publicKey.getEncoded(true)));//1.64
System.out.println("私鑰: " + Util.byteToHex(privateKey.toByteArray()));
}
//資料加密
public static String encrypt(byte[] publicKey, byte[] data) throws IOException
{
if (publicKey == null || publicKey.length == 0)
{
return null;
}
if (data == null || data.length == 0)
{
return null;
}
byte[] source = new byte[data.length];
System.arraycopy(data, 0, source, 0, data.length);
Cipher cipher = new Cipher();
SM2 sm2 = SM2.Instance();
ECPoint userKey = sm2.ecc_curve.decodePoint(publicKey);
ECPoint c1 = cipher.Init_enc(sm2, userKey);
cipher.Encrypt(source);
byte[] c3 = new byte[32];
cipher.Dofinal(c3);
// System.out.println("C1 " + Util.byteToHex(c1.getEncoded()));
// System.out.println("C2 " + Util.byteToHex(source));
// System.out.println("C3 " + Util.byteToHex(c3));
//C1 C2 C3拼裝成加密字串
return Util.byteToHex(c1.getEncoded(true)) + Util.byteToHex(source) + Util.byteToHex(c3);
}
//資料解密
public static byte[] decrypt(byte[] privateKey, byte[] encryptedData) throws IOException
{
if (privateKey == null || privateKey.length == 0)
{
return null;
}
if (encryptedData == null || encryptedData.length == 0)
{
return null;
}
//加密位元組數組轉換為十六進制的字元串 長度變為encryptedData.length * 2
String data = Util.byteToHex(encryptedData);
/***分解加密字串
* （C1 = C1标志位2位 + C1實體部分128位 = 130）
* （C3 = C3實體部分64位 = 64）
* （C2 = encryptedData.length * 2 - C1長度 - C2長度）
*/
byte[] c1Bytes = Util.hexToByte(data.substring(0,130));
int c2Len = encryptedData.length - 97;
byte[] c2 = Util.hexToByte(data.substring(130,130 + 2 * c2Len));
byte[] c3 = Util.hexToByte(data.substring(130 + 2 * c2Len,194 + 2 * c2Len));
SM2 sm2 = SM2.Instance();
BigInteger userD = new BigInteger(1, privateKey);
//通過C1實體位元組來生成ECPoint
ECPoint c1 = sm2.ecc_curve.decodePoint(c1Bytes);
Cipher cipher = new Cipher();
cipher.Init_dec(userD, c1);
cipher.Decrypt(c2);
cipher.Dofinal(c3);
//傳回解密結果
return c2;
}
} package jianghaoyu.security.sm2;
import jianghaoyu.security.Util;
public class SM2Test {
public static void main(String[] args) throws Exception
{
//生成密鑰對
SM2Utils.generateKeyPair();
// 接口資料 https://sgccetpt.sgcc.com.cn:21002/ebwebapi/api/project/ebProject/queryPageList?v=1640053932442
String plainText = "{\"code\":200,\"message\":\"成功\",\"data\":ges\":295}}";
byte[] sourceData = plainText.getBytes();
//下面的秘鑰可以使用generateKeyPair()生成的秘鑰内容
// 國密規範正式私鑰
String prik = "3690655E33D5EA3D9A4AE1A1ADD766FDEA045CDEAA43A9206FB8C430CEFE0D94";
// 國密規範正式公鑰
String pubk = "04F6E0C3345AE42B51E06BF50B98834988D54EBC7460FE135A48171BC0629EAE205EEDE253A530608178A98F1E19BB737302813BA39ED3FA3C51639D7A20C7391A";
System.out.println("--------------進入sm2加密_階段--------------");
System.out.println("加密: "+plainText+" 長度："+plainText.length());
long start_time = System.currentTimeMillis();
String cipherText = SM2Utils.encrypt(Util.hexToByte(pubk), sourceData);
long end_time = System.currentTimeMillis();
System.out.println(cipherText);
System.out.println("加密後長度："+cipherText.length() +" 耗時：（"+(end_time - start_time)+"）毫米");
System.out.println("--------------進入sm2解密_階段--------------");
long start_time2 = System.currentTimeMillis();
plainText = new String(SM2Utils.decrypt(Util.hexToByte(prik), Util.hexToByte(cipherText)));
long end_time2 = System.currentTimeMillis();
System.out.println("解密後值: "+plainText);
System.out.println("解密後長度："+plainText.length() +" 耗時：（"+(end_time2 - start_time2)+"）毫米");
}
} sm3 代碼
SM3
package jianghaoyu.security.sm3;
import jianghaoyu.security.Util;
public class SM3 {
public static final byte[] iv = { 0x73, (byte) 0x80, 0x16, 0x6f, 0x49,
0x14, (byte) 0xb2, (byte) 0xb9, 0x17, 0x24, 0x42, (byte) 0xd7,
(byte) 0xda, (byte) 0x8a, 0x06, 0x00, (byte) 0xa9, 0x6f, 0x30,
(byte) 0xbc, (byte) 0x16, 0x31, 0x38, (byte) 0xaa, (byte) 0xe3,
(byte) 0x8d, (byte) 0xee, 0x4d, (byte) 0xb0, (byte) 0xfb, 0x0e,
0x4e };
public static int[] Tj = new int[64];
static
{
for (int i = 0; i < 16; i++)
{
Tj[i] = 0x79cc4519;
}
for (int i = 16; i < 64; i++)
{
Tj[i] = 0x7a879d8a;
}
}
public static byte[] CF(byte[] V, byte[] B)
{
int[] v, b;
v = convert(V);
b = convert(B);
return convert(CF(v, b));
}
private static int[] convert(byte[] arr)
{
int[] out = new int[arr.length / 4];
byte[] tmp = new byte[4];
for (int i = 0; i < arr.length; i += 4)
{
System.arraycopy(arr, i, tmp, 0, 4);
out[i / 4] = bigEndianByteToInt(tmp);
}
return out;
}
private static byte[] convert(int[] arr)
{
byte[] out = new byte[arr.length * 4];
byte[] tmp = null;
for (int i = 0; i < arr.length; i++)
{
tmp = bigEndianIntToByte(arr[i]);
System.arraycopy(tmp, 0, out, i * 4, 4);
}
return out;
}
public static int[] CF(int[] V, int[] B)
{
int a, b, c, d, e, f, g, h;
int ss1, ss2, tt1, tt2;
a = V[0];
b = V[1];
c = V[2];
d = V[3];
e = V[4];
f = V[5];
g = V[6];
h = V[7];
int[][] arr = expand(B);
int[] w = arr[0];
int[] w1 = arr[1];
for (int j = 0; j < 64; j++)
{
ss1 = (bitCycleLeft(a, 12) + e + bitCycleLeft(Tj[j], j));
ss1 = bitCycleLeft(ss1, 7);
ss2 = ss1 ^ bitCycleLeft(a, 12);
tt1 = FFj(a, b, c, j) + d + ss2 + w1[j];
tt2 = GGj(e, f, g, j) + h + ss1 + w[j];
d = c;
c = bitCycleLeft(b, 9);
b = a;
a = tt1;
h = g;
g = bitCycleLeft(f, 19);
f = e;
e = P0(tt2);
/*System.out.print(j+" ");
System.out.print(Integer.toHexString(a)+" ");
System.out.print(Integer.toHexString(b)+" ");
System.out.print(Integer.toHexString(c)+" ");
System.out.print(Integer.toHexString(d)+" ");
System.out.print(Integer.toHexString(e)+" ");
System.out.print(Integer.toHexString(f)+" ");
System.out.print(Integer.toHexString(g)+" ");
System.out.print(Integer.toHexString(h)+" ");
System.out.println("");*/
}
// System.out.println("");
int[] out = new int[8];
out[0] = a ^ V[0];
out[1] = b ^ V[1];
out[2] = c ^ V[2];
out[3] = d ^ V[3];
out[4] = e ^ V[4];
out[5] = f ^ V[5];
out[6] = g ^ V[6];
out[7] = h ^ V[7];
return out;
}
private static int[][] expand(int[] B)
{
int W[] = new int[68];
int W1[] = new int[64];
for (int i = 0; i < B.length; i++)
{
W[i] = B[i];
}
for (int i = 16; i < 68; i++)
{
W[i] = P1(W[i - 16] ^ W[i - 9] ^ bitCycleLeft(W[i - 3], 15))
^ bitCycleLeft(W[i - 13], 7) ^ W[i - 6];
}
for (int i = 0; i < 64; i++)
{
W1[i] = W[i] ^ W[i + 4];
}
int arr[][] = new int[][] { W, W1 };
return arr;
}
private static byte[] bigEndianIntToByte(int num)
{
return back(Util.intToBytes(num));
}
private static int bigEndianByteToInt(byte[] bytes)
{
return Util.byteToInt(back(bytes));
}
private static int FFj(int X, int Y, int Z, int j)
{
if (j >= 0 && j <= 15)
{
return FF1j(X, Y, Z);
}
else
{
return FF2j(X, Y, Z);
}
}
private static int GGj(int X, int Y, int Z, int j)
{
if (j >= 0 && j <= 15)
{
return GG1j(X, Y, Z);
}
else
{
return GG2j(X, Y, Z);
}
}
// 邏輯位運算函數
private static int FF1j(int X, int Y, int Z)
{
int tmp = X ^ Y ^ Z;
return tmp;
}
private static int FF2j(int X, int Y, int Z)
{
int tmp = ((X & Y) | (X & Z) | (Y & Z));
return tmp;
}
private static int GG1j(int X, int Y, int Z)
{
int tmp = X ^ Y ^ Z;
return tmp;
}
private static int GG2j(int X, int Y, int Z)
{
int tmp = (X & Y) | (~X & Z);
return tmp;
}
private static int P0(int X)
{
int y = rotateLeft(X, 9);
y = bitCycleLeft(X, 9);
int z = rotateLeft(X, 17);
z = bitCycleLeft(X, 17);
int t = X ^ y ^ z;
return t;
}
private static int P1(int X)
{
int t = X ^ bitCycleLeft(X, 15) ^ bitCycleLeft(X, 23);
return t;
}
/**
* 對最後一個分組位元組資料padding
*
* @param in
* @param bLen
* 分組個數
* @return
*/
public static byte[] padding(byte[] in, int bLen)
{
int k = 448 - (8 * in.length + 1) % 512;
if (k < 0)
{
k = 960 - (8 * in.length + 1) % 512;
}
k += 1;
byte[] padd = new byte[k / 8];
padd[0] = (byte) 0x80;
long n = in.length * 8 + bLen * 512;
byte[] out = new byte[in.length + k / 8 + 64 / 8];
int pos = 0;
System.arraycopy(in, 0, out, 0, in.length);
pos += in.length;
System.arraycopy(padd, 0, out, pos, padd.length);
pos += padd.length;
byte[] tmp = back(Util.longToBytes(n));
System.arraycopy(tmp, 0, out, pos, tmp.length);
return out;
}
/**
* 位元組數組逆序
*
* @param in
* @return
*/
private static byte[] back(byte[] in)
{
byte[] out = new byte[in.length];
for (int i = 0; i < out.length; i++)
{
out[i] = in[out.length - i - 1];
}
return out;
}
public static int rotateLeft(int x, int n)
{
return (x << n) | (x >> (32 - n));
}
private static int bitCycleLeft(int n, int bitLen)
{
bitLen %= 32;
byte[] tmp = bigEndianIntToByte(n);
int byteLen = bitLen / 8;
int len = bitLen % 8;
if (byteLen > 0)
{
tmp = byteCycleLeft(tmp, byteLen);
}
if (len > 0)
{
tmp = bitSmall8CycleLeft(tmp, len);
}
return bigEndianByteToInt(tmp);
}
private static byte[] bitSmall8CycleLeft(byte[] in, int len)
{
byte[] tmp = new byte[in.length];
int t1, t2, t3;
for (int i = 0; i < tmp.length; i++)
{
t1 = (byte) ((in[i] & 0x000000ff) << len);
t2 = (byte) ((in[(i + 1) % tmp.length] & 0x000000ff) >> (8 - len));
t3 = (byte) (t1 | t2);
tmp[i] = (byte) t3;
}
return tmp;
}
private static byte[] byteCycleLeft(byte[] in, int byteLen)
{
byte[] tmp = new byte[in.length];
System.arraycopy(in, byteLen, tmp, 0, in.length - byteLen);
System.arraycopy(in, 0, tmp, in.length - byteLen, byteLen);
return tmp;
}
} SM3Digest
package jianghaoyu.security.sm3;
import org.bouncycastle.util.encoders.Hex;
public class SM3Digest {
/** SM3值的長度 */
private static final int BYTE_LENGTH = 32;
/** SM3分組長度 */
private static final int BLOCK_LENGTH = 64;
/** 緩沖區長度 */
private static final int BUFFER_LENGTH = BLOCK_LENGTH * 1;
/** 緩沖區 */
private byte[] xBuf = new byte[BUFFER_LENGTH];
/** 緩沖區偏移量 */
private int xBufOff;
/** 初始向量 */
private byte[] V = SM3.iv.clone();
private int cntBlock = 0;
public SM3Digest() {
}
public SM3Digest(SM3Digest t)
{
System.arraycopy(t.xBuf, 0, this.xBuf, 0, t.xBuf.length);
this.xBufOff = t.xBufOff;
System.arraycopy(t.V, 0, this.V, 0, t.V.length);
}
/**
* SM3結果輸出
*
* @param out 儲存SM3結構的緩沖區
* @param outOff 緩沖區偏移量
* @return
*/
public int doFinal(byte[] out, int outOff)
{
byte[] tmp = doFinal();
System.arraycopy(tmp, 0, out, 0, tmp.length);
return BYTE_LENGTH;
}
public void reset()
{
xBufOff = 0;
cntBlock = 0;
V = SM3.iv.clone();
}
/**
* 明文輸入
*
* @param in
* 明文輸入緩沖區
* @param inOff
* 緩沖區偏移量
* @param len
* 明文長度
*/
public void update(byte[] in, int inOff, int len)
{
int partLen = BUFFER_LENGTH - xBufOff;
int inputLen = len;
int dPos = inOff;
if (partLen < inputLen)
{
System.arraycopy(in, dPos, xBuf, xBufOff, partLen);
inputLen -= partLen;
dPos += partLen;
doUpdate();
while (inputLen > BUFFER_LENGTH)
{
System.arraycopy(in, dPos, xBuf, 0, BUFFER_LENGTH);
inputLen -= BUFFER_LENGTH;
dPos += BUFFER_LENGTH;
doUpdate();
}
}
System.arraycopy(in, dPos, xBuf, xBufOff, inputLen);
xBufOff += inputLen;
}
private void doUpdate()
{
byte[] B = new byte[BLOCK_LENGTH];
for (int i = 0; i < BUFFER_LENGTH; i += BLOCK_LENGTH)
{
System.arraycopy(xBuf, i, B, 0, B.length);
doHash(B);
}
xBufOff = 0;
}
private void doHash(byte[] B)
{
byte[] tmp = SM3.CF(V, B);
System.arraycopy(tmp, 0, V, 0, V.length);
cntBlock++;
}
private byte[] doFinal()
{
byte[] B = new byte[BLOCK_LENGTH];
byte[] buffer = new byte[xBufOff];
System.arraycopy(xBuf, 0, buffer, 0, buffer.length);
byte[] tmp = SM3.padding(buffer, cntBlock);
for (int i = 0; i < tmp.length; i += BLOCK_LENGTH)
{
System.arraycopy(tmp, i, B, 0, B.length);
doHash(B);
}
return V;
}
public void update(byte in)
{
byte[] buffer = new byte[] { in };
update(buffer, 0, 1);
}
public int getDigestSize()
{
return BYTE_LENGTH;
}
} SM3Test
package jianghaoyu.security.sm3;
import org.bouncycastle.util.encoders.Hex;
public class SM3Test {
public static void main(String[] args)
{
byte[] md = new byte[32];
byte[] msg1 = "ererfeiisgod".getBytes();
SM3Digest sm3 = new SM3Digest();
sm3.update(msg1, 0, msg1.length);
sm3.doFinal(md, 0);
String s = new String(Hex.encode(md));
System.out.println(s.toUpperCase());
}
} 日志
C2C898F5FEFE794528E45CC946E383190C9C4E9C686CE41BA1056E05B246261A SM4代碼
SM4
package jianghaoyu.security.sm4;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
public class SM4 {
public static final int SM4_ENCRYPT = 1;
public static final int SM4_DECRYPT = 0;
private long GET_ULONG_BE(byte[] b, int i)
{
long n = (long)(b[i] & 0xff) << 24 | (long)((b[i + 1] & 0xff) << 16) | (long)((b[i + 2] & 0xff) << 8) | (long)(b[i + 3] & 0xff) & 0xffffffffL;
return n;
}
private void PUT_ULONG_BE(long n, byte[] b, int i)
{
b[i] = (byte)(int)(0xFF & n >> 24);
b[i + 1] = (byte)(int)(0xFF & n >> 16);
b[i + 2] = (byte)(int)(0xFF & n >> 8);
b[i + 3] = (byte)(int)(0xFF & n);
}
private long SHL(long x, int n)
{
return (x & 0xFFFFFFFF) << n;
}
private long ROTL(long x, int n)
{
return SHL(x, n) | x >> (32 - n);
}
private void SWAP(long[] sk, int i)
{
long t = sk[i];
sk[i] = sk[(31 - i)];
sk[(31 - i)] = t;
}
public static final byte[] SboxTable = { (byte) 0xd6, (byte) 0x90, (byte) 0xe9, (byte) 0xfe,
(byte) 0xcc, (byte) 0xe1, 0x3d, (byte) 0xb7, 0x16, (byte) 0xb6,
0x14, (byte) 0xc2, 0x28, (byte) 0xfb, 0x2c, 0x05, 0x2b, 0x67,
(byte) 0x9a, 0x76, 0x2a, (byte) 0xbe, 0x04, (byte) 0xc3,
(byte) 0xaa, 0x44, 0x13, 0x26, 0x49, (byte) 0x86, 0x06,
(byte) 0x99, (byte) 0x9c, 0x42, 0x50, (byte) 0xf4, (byte) 0x91,
(byte) 0xef, (byte) 0x98, 0x7a, 0x33, 0x54, 0x0b, 0x43,
(byte) 0xed, (byte) 0xcf, (byte) 0xac, 0x62, (byte) 0xe4,
(byte) 0xb3, 0x1c, (byte) 0xa9, (byte) 0xc9, 0x08, (byte) 0xe8,
(byte) 0x95, (byte) 0x80, (byte) 0xdf, (byte) 0x94, (byte) 0xfa,
0x75, (byte) 0x8f, 0x3f, (byte) 0xa6, 0x47, 0x07, (byte) 0xa7,
(byte) 0xfc, (byte) 0xf3, 0x73, 0x17, (byte) 0xba, (byte) 0x83,
0x59, 0x3c, 0x19, (byte) 0xe6, (byte) 0x85, 0x4f, (byte) 0xa8,
0x68, 0x6b, (byte) 0x81, (byte) 0xb2, 0x71, 0x64, (byte) 0xda,
(byte) 0x8b, (byte) 0xf8, (byte) 0xeb, 0x0f, 0x4b, 0x70, 0x56,
(byte) 0x9d, 0x35, 0x1e, 0x24, 0x0e, 0x5e, 0x63, 0x58, (byte) 0xd1,
(byte) 0xa2, 0x25, 0x22, 0x7c, 0x3b, 0x01, 0x21, 0x78, (byte) 0x87,
(byte) 0xd4, 0x00, 0x46, 0x57, (byte) 0x9f, (byte) 0xd3, 0x27,
0x52, 0x4c, 0x36, 0x02, (byte) 0xe7, (byte) 0xa0, (byte) 0xc4,
(byte) 0xc8, (byte) 0x9e, (byte) 0xea, (byte) 0xbf, (byte) 0x8a,
(byte) 0xd2, 0x40, (byte) 0xc7, 0x38, (byte) 0xb5, (byte) 0xa3,
(byte) 0xf7, (byte) 0xf2, (byte) 0xce, (byte) 0xf9, 0x61, 0x15,
(byte) 0xa1, (byte) 0xe0, (byte) 0xae, 0x5d, (byte) 0xa4,
(byte) 0x9b, 0x34, 0x1a, 0x55, (byte) 0xad, (byte) 0x93, 0x32,
0x30, (byte) 0xf5, (byte) 0x8c, (byte) 0xb1, (byte) 0xe3, 0x1d,
(byte) 0xf6, (byte) 0xe2, 0x2e, (byte) 0x82, 0x66, (byte) 0xca,
0x60, (byte) 0xc0, 0x29, 0x23, (byte) 0xab, 0x0d, 0x53, 0x4e, 0x6f,
(byte) 0xd5, (byte) 0xdb, 0x37, 0x45, (byte) 0xde, (byte) 0xfd,
(byte) 0x8e, 0x2f, 0x03, (byte) 0xff, 0x6a, 0x72, 0x6d, 0x6c, 0x5b,
0x51, (byte) 0x8d, 0x1b, (byte) 0xaf, (byte) 0x92, (byte) 0xbb,
(byte) 0xdd, (byte) 0xbc, 0x7f, 0x11, (byte) 0xd9, 0x5c, 0x41,
0x1f, 0x10, 0x5a, (byte) 0xd8, 0x0a, (byte) 0xc1, 0x31,
(byte) 0x88, (byte) 0xa5, (byte) 0xcd, 0x7b, (byte) 0xbd, 0x2d,
0x74, (byte) 0xd0, 0x12, (byte) 0xb8, (byte) 0xe5, (byte) 0xb4,
(byte) 0xb0, (byte) 0x89, 0x69, (byte) 0x97, 0x4a, 0x0c,
(byte) 0x96, 0x77, 0x7e, 0x65, (byte) 0xb9, (byte) 0xf1, 0x09,
(byte) 0xc5, 0x6e, (byte) 0xc6, (byte) 0x84, 0x18, (byte) 0xf0,
0x7d, (byte) 0xec, 0x3a, (byte) 0xdc, 0x4d, 0x20, 0x79,
(byte) 0xee, 0x5f, 0x3e, (byte) 0xd7, (byte) 0xcb, 0x39, 0x48 };
public static final int[] FK = { 0xa3b1bac6, 0x56aa3350, 0x677d9197, 0xb27022dc };
public static final int[] CK = { 0x00070e15,0x1c232a31,0x383f464d,0x545b6269,
0x70777e85,0x8c939aa1,0xa8afb6bd,0xc4cbd2d9,
0xe0e7eef5,0xfc030a11,0x181f262d,0x343b4249,
0x50575e65,0x6c737a81,0x888f969d,0xa4abb2b9,
0xc0c7ced5,0xdce3eaf1,0xf8ff060d,0x141b2229,
0x30373e45,0x4c535a61,0x686f767d,0x848b9299,
0xa0a7aeb5,0xbcc3cad1,0xd8dfe6ed,0xf4fb0209,
0x10171e25,0x2c333a41,0x484f565d,0x646b7279 };
private byte sm4Sbox(byte inch)
{
int i = inch & 0xFF;
byte retVal = SboxTable[i];
return retVal;
}
private long sm4Lt(long ka)
{
long bb = 0L;
long c = 0L;
byte[] a = new byte[4];
byte[] b = new byte[4];
PUT_ULONG_BE(ka, a, 0);
b[0] = sm4Sbox(a[0]);
b[1] = sm4Sbox(a[1]);
b[2] = sm4Sbox(a[2]);
b[3] = sm4Sbox(a[3]);
bb = GET_ULONG_BE(b, 0);
c = bb ^ ROTL(bb, 2) ^ ROTL(bb, 10) ^ ROTL(bb, 18) ^ ROTL(bb, 24);
return c;
}
private long sm4F(long x0, long x1, long x2, long x3, long rk)
{
return x0 ^ sm4Lt(x1 ^ x2 ^ x3 ^ rk);
}
private long sm4CalciRK(long ka)
{
long bb = 0L;
long rk = 0L;
byte[] a = new byte[4];
byte[] b = new byte[4];
PUT_ULONG_BE(ka, a, 0);
b[0] = sm4Sbox(a[0]);
b[1] = sm4Sbox(a[1]);
b[2] = sm4Sbox(a[2]);
b[3] = sm4Sbox(a[3]);
bb = GET_ULONG_BE(b, 0);
rk = bb ^ ROTL(bb, 13) ^ ROTL(bb, 23);
return rk;
}
private void sm4_setkey(long[] SK, byte[] key)
{
long[] MK = new long[4];
long[] k = new long[36];
int i = 0;
MK[0] = GET_ULONG_BE(key, 0);
MK[1] = GET_ULONG_BE(key, 4);
MK[2] = GET_ULONG_BE(key, 8);
MK[3] = GET_ULONG_BE(key, 12);
k[0] = MK[0] ^ (long) FK[0];
k[1] = MK[1] ^ (long) FK[1];
k[2] = MK[2] ^ (long) FK[2];
k[3] = MK[3] ^ (long) FK[3];
for (; i < 32; i++)
{
k[(i + 4)] = (k[i] ^ sm4CalciRK(k[(i + 1)] ^ k[(i + 2)] ^ k[(i + 3)] ^ (long) CK[i]));
SK[i] = k[(i + 4)];
}
}
private void sm4_one_round(long[] sk, byte[] input, byte[] output)
{
int i = 0;
long[] ulbuf = new long[36];
ulbuf[0] = GET_ULONG_BE(input, 0);
ulbuf[1] = GET_ULONG_BE(input, 4);
ulbuf[2] = GET_ULONG_BE(input, 8);
ulbuf[3] = GET_ULONG_BE(input, 12);
while (i < 32)
{
ulbuf[(i + 4)] = sm4F(ulbuf[i], ulbuf[(i + 1)], ulbuf[(i + 2)], ulbuf[(i + 3)], sk[i]);
i++;
}
PUT_ULONG_BE(ulbuf[35], output, 0);
PUT_ULONG_BE(ulbuf[34], output, 4);
PUT_ULONG_BE(ulbuf[33], output, 8);
PUT_ULONG_BE(ulbuf[32], output, 12);
}
private byte[] padding(byte[] input, int mode)
{
if (input == null)
{
return null;
}
byte[] ret = (byte[]) null;
if (mode == SM4_ENCRYPT)
{
int p = 16 - input.length % 16;
ret = new byte[input.length + p];
System.arraycopy(input, 0, ret, 0, input.length);
for (int i = 0; i < p; i++)
{
ret[input.length + i] = (byte) p;
}
}
else
{
int p = input[input.length - 1];
ret = new byte[input.length - p];
System.arraycopy(input, 0, ret, 0, input.length - p);
}
return ret;
}
public void sm4_setkey_enc(SM4_Context ctx, byte[] key) throws Exception
{
if (ctx == null)
{
throw new Exception("ctx is null!");
}
if (key == null || key.length != 16)
{
throw new Exception("key error!");
}
ctx.mode = SM4_ENCRYPT;
sm4_setkey(ctx.sk, key);
}
public void sm4_setkey_dec(SM4_Context ctx, byte[] key) throws Exception
{
if (ctx == null)
{
throw new Exception("ctx is null!");
}
if (key == null || key.length != 16)
{
throw new Exception("key error!");
}
int i = 0;
ctx.mode = SM4_DECRYPT;
sm4_setkey(ctx.sk, key);
for (i = 0; i < 16; i++)
{
SWAP(ctx.sk, i);
}
}
public byte[] sm4_crypt_ecb(SM4_Context ctx, byte[] input) throws Exception
{
if (input == null)
{
throw new Exception("input is null!");
}
if ((ctx.isPadding) && (ctx.mode == SM4_ENCRYPT))
{
input = padding(input, SM4_ENCRYPT);
}
int length = input.length;
ByteArrayInputStream bins = new ByteArrayInputStream(input);
ByteArrayOutputStream bous = new ByteArrayOutputStream();
for(; length > 0; length -= 16)
{
byte[] in = new byte[16];
byte[] out = new byte[16];
bins.read(in);
sm4_one_round(ctx.sk, in, out);
bous.write(out);
}
byte[] output = bous.toByteArray();
if (ctx.isPadding && ctx.mode == SM4_DECRYPT)
{
output = padding(output, SM4_DECRYPT);
}
bins.close();
bous.close();
return output;
}
public byte[] sm4_crypt_cbc(SM4_Context ctx, byte[] iv, byte[] input) throws Exception
{
if (iv == null || iv.length != 16)
{
throw new Exception("iv error!");
}
if (input == null)
{
throw new Exception("input is null!");
}
if (ctx.isPadding && ctx.mode == SM4_ENCRYPT)
{
input = padding(input, SM4_ENCRYPT);
}
int i = 0;
int length = input.length;
ByteArrayInputStream bins = new ByteArrayInputStream(input);
ByteArrayOutputStream bous = new ByteArrayOutputStream();
if (ctx.mode == SM4_ENCRYPT)
{
for(; length > 0; length -= 16)
{
byte[] in = new byte[16];
byte[] out = new byte[16];
byte[] out1 = new byte[16];
bins.read(in);
for (i = 0; i < 16; i++)
{
out[i] = ((byte) (in[i] ^ iv[i]));
}
sm4_one_round(ctx.sk, out, out1);
System.arraycopy(out1, 0, iv, 0, 16);
bous.write(out1);
}
}
else
{
byte[] temp = new byte[16];
for(; length > 0; length -= 16)
{
byte[] in = new byte[16];
byte[] out = new byte[16];
byte[] out1 = new byte[16];
bins.read(in);
System.arraycopy(in, 0, temp, 0, 16);
sm4_one_round(ctx.sk, in, out);
for (i = 0; i < 16; i++)
{
out1[i] = ((byte) (out[i] ^ iv[i]));
}
System.arraycopy(temp, 0, iv, 0, 16);
bous.write(out1);
}
}
byte[] output = bous.toByteArray();
if (ctx.isPadding && ctx.mode == SM4_DECRYPT)
{
output = padding(output, SM4_DECRYPT);
}
bins.close();
bous.close();
return output;
}
} SM4_Context
package jianghaoyu.security.sm4;
public class SM4_Context {
public int mode;
public long[] sk;
public boolean isPadding;
public SM4_Context()
{
this.mode = 1;
this.isPadding = true;
this.sk = new long[32];
}
} SM4Uitls jdk1.7 和 1.8 這裡有變化 對base64 的類 代碼中有提示
package jianghaoyu.security.sm4;
import org.bouncycastle.util.encoders.Hex;
import jianghaoyu.secp.Strings;
import jianghaoyu.security.Util;
import java.security.SecureRandom;
import java.util.Base64;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class SM4Utils {
public String secretKey = "";
private String iv = "";
public void setIv(String iv){
this.iv = iv;
}
public boolean hexString = false;
public SM4Utils(){
}
/**
* generate a secret key.
* @return a random key or iv with hex code type.
*/
public String generateKeyOrIV() {
byte[] key = new byte[16];
new SecureRandom().nextBytes(key);
return Strings.fromByteArray(Hex.encode(key));
}
public String encryptData_ECB(String plainText)
{
try
{
SM4_Context ctx = new SM4_Context();
ctx.isPadding = true;
ctx.mode = SM4.SM4_ENCRYPT;
byte[] keyBytes;
if (hexString)
{
keyBytes = Util.hexStringToBytes(secretKey);
}
else
{
keyBytes = secretKey.getBytes();
}
SM4 sm4 = new SM4();
sm4.sm4_setkey_enc(ctx, keyBytes);
byte[] encrypted = sm4.sm4_crypt_ecb(ctx, plainText.getBytes("GBK"));
String cipherText = Base64.getMimeEncoder().encodeToString(encrypted);
if (cipherText != null && cipherText.trim().length() > 0)
{
Pattern p = Pattern.compile("\\s*|\t|\r|\n");
Matcher m = p.matcher(cipherText);
cipherText = m.replaceAll("");
}
return cipherText;
}
catch (Exception e)
{
e.printStackTrace();
return null;
}
}
public String decryptData_ECB(String cipherText)
{
try
{
SM4_Context ctx = new SM4_Context();
ctx.isPadding = true;
ctx.mode = SM4.SM4_DECRYPT;
byte[] keyBytes;
if (hexString)
{
keyBytes = Util.hexStringToBytes(secretKey);
}
else
{
keyBytes = secretKey.getBytes();
}
SM4 sm4 = new SM4();
sm4.sm4_setkey_dec(ctx, keyBytes);
byte[] decrypted = sm4.sm4_crypt_ecb(ctx, Base64.getMimeDecoder().decode(cipherText));
return new String(decrypted, "GBK");
}
catch (Exception e)
{
e.printStackTrace();
return null;
}
}
public String encryptData_CBC(String plainText)
{
try
{
SM4_Context ctx = new SM4_Context();
ctx.isPadding = true;
ctx.mode = SM4.SM4_ENCRYPT;
byte[] keyBytes;
byte[] ivBytes;
if (hexString)
{
keyBytes = Util.hexStringToBytes(secretKey);
ivBytes = Util.hexStringToBytes(iv);
}
else
{
keyBytes = secretKey.getBytes();
ivBytes = iv.getBytes();
}
SM4 sm4 = new SM4();
sm4.sm4_setkey_enc(ctx, keyBytes);
byte[] encrypted = sm4.sm4_crypt_cbc(ctx, ivBytes, plainText.getBytes("GBK"));
//jdk1.7
// String cipherText = new BASE64Encoder().encode(encrypted);
//jdk1.8
String cipherText = Base64.getMimeEncoder().encodeToString(encrypted);
if (cipherText != null && cipherText.trim().length() > 0)
{
Pattern p = Pattern.compile("\\s*|\t|\r|\n");
Matcher m = p.matcher(cipherText);
cipherText = m.replaceAll("");
}
return cipherText;
}
catch (Exception e)
{
e.printStackTrace();
return null;
}
}
public String decryptData_CBC(String cipherText)
{
try
{
SM4_Context ctx = new SM4_Context();
ctx.isPadding = true;
ctx.mode = SM4.SM4_DECRYPT;
byte[] keyBytes;
byte[] ivBytes;
if (hexString)
{
keyBytes = Util.hexStringToBytes(secretKey);
ivBytes = Util.hexStringToBytes(iv);
}
else
{
keyBytes = secretKey.getBytes();
ivBytes = iv.getBytes();
}
SM4 sm4 = new SM4();
sm4.sm4_setkey_dec(ctx, keyBytes);
//jdk1.7
// byte[] decrypted = sm4.sm4_crypt_cbc(ctx, ivBytes, new BASE64Decoder().decodeBuffer(cipherText));
//jdk1.8
byte[] decrypted = sm4.sm4_crypt_cbc(ctx, ivBytes, Base64.getMimeDecoder().decode(cipherText));
return new String(decrypted, "GBK");
}
catch (Exception e)
{
e.printStackTrace();
return null;
}
}
} 對于依賴包 1.64 和1.46 對 x y 的使用也有差別代碼 TESTSm4
package jianghaoyu.security.sm4;
import org.bouncycastle.util.encoders.Hex;
import java.io.IOException;
import java.security.SecureRandom;
public class TestSm4 {
public static void main(String[] args) throws IOException
{
String plainText = "深刻的快速開發開始了拉絲射流風機";
SM4Utils sm4 = new SM4Utils();
String key = sm4.generateKeyOrIV();
System.out.println("生成key = "+key);
// sm4.secretKey = "JeF8U9wHFOMfs2Y8";
// sm4.hexString = false;
sm4.secretKey = key;
sm4.hexString = true;
System.out.println("-------------------------ECB 模式加密-------------------------");
long start_time = System.currentTimeMillis();
String cipherText = sm4.encryptData_ECB(plainText);
System.out.println("ECB 密文長度：("+cipherText.length()+")耗時："+(System.currentTimeMillis()-start_time));
System.out.println("ECB 密文: " + cipherText);
System.out.println("");
long start_time3 = System.currentTimeMillis();
plainText = sm4.decryptData_ECB(cipherText);
System.out.println("ECB 解密 明文長度：("+plainText.length()+") 耗時："+(System.currentTimeMillis()-start_time3));
System.out.println("ECB 解密 明文: " + plainText);
System.out.println("");
System.out.println("-------------------------CBC 模式加密-------------------------");
// sm4.setIv("UISwD9fW6cFh9SNS");
sm4.setIv(key);//
long start_time2 = System.currentTimeMillis();
cipherText = sm4.encryptData_CBC(plainText);
System.out.println("CBC 密文長度：("+cipherText.length()+")耗時："+(System.currentTimeMillis()-start_time2));
System.out.println("CBC 密文: " + cipherText);
System.out.println("");
long start_time6 = System.currentTimeMillis();
plainText = sm4.decryptData_CBC(cipherText);
System.out.println("CBC 解密 明文長度：("+plainText.length()+")耗時："+(System.currentTimeMillis()-start_time6));
System.out.println("CBC 解密 明文: " + plainText);
}
} 日志
生成key = 957b4109390f895e39b1c70a8010daa7
-------------------------ECB 模式加密-------------------------
ECB 密文長度：(64)耗時：0
ECB 密文: Yvblv50Qi8gg/i2144/r9P2O0txd4GTv4eEiMrmA8gOeTmp5MW8Vlsb0N741CvkD
ECB 解密 明文長度：(16) 耗時：0
ECB 解密 明文: 深刻的快速開發開始了拉絲射流風機
-------------------------CBC 模式加密-------------------------
CBC 密文長度：(64)耗時：0
CBC 密文: kG8Xg+qmLCN4pU4tWAHllLUrFL3YN4BCKy7qdZqnEK9+2m/HQTViJruXfuxxDXOr
CBC 解密 明文長度：(16)耗時：0
CBC 解密 明文: 深刻的快速開發開始了拉絲射流風機
程序已結束，退出代碼為 0 ![Java小案例——随機數猜測随機數猜測[圖]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)