package usefulCode.sm3;
import java.io.ByteArrayOutputStream;
import java.math.BigInteger;
import java.util.Arrays;
public class SM3Helper {
public static char[] chars = { '0', '1', '2', '3', '4', '5', '6', '7', '8',
'9', 'A', 'B', 'C', 'D', 'E', 'F' };
private static final String ivHexStr = "7380166f 4914b2b9 172442d7 da8a0600 a96f30bc 163138aa e38dee4d b0fb0e4e";
public static final BigInteger IV = new BigInteger(ivHexStr.replaceAll(" ",
""), 16);
public static final Integer Tj15 = Integer.valueOf("79cc4519", 16);
public static final Integer Tj63 = Integer.valueOf("7a879d8a", 16);
public static final byte[] FirstPadding = { (byte) 0x80 };
public static final byte[] ZeroPadding = { (byte) 0x00 };
public static int T(int j) throws Exception {
if (j >= 0 && j <= 15) {
return Tj15.intValue();
} else if (j >= 16 && j <= 63) {
return Tj63.intValue();
} else {
throw new Exception();
}
}
public static Integer FF(Integer x, Integer y, Integer z, int j)
throws Exception {
if (j >= 0 && j <= 15) {
return Integer.valueOf(x.intValue() ^ y.intValue() ^ z.intValue());
} else if (j >= 16 && j <= 63) {
return Integer.valueOf((x.intValue() & y.intValue())
| (x.intValue() & z.intValue())
| (y.intValue() & z.intValue()));
} else {
throw new Exception();
}
}
public static Integer GG(Integer x, Integer y, Integer z, int j)
throws Exception {
if (j >= 0 && j <= 15) {
return Integer.valueOf(x.intValue() ^ y.intValue() ^ z.intValue());
} else if (j >= 16 && j <= 63) {
return Integer.valueOf((x.intValue() & y.intValue())
| (~x.intValue() & z.intValue()));
} else {
throw new Exception();
}
}
public static Integer P0(Integer x) throws Exception {
return Integer.valueOf(x.intValue()
^ Integer.rotateLeft(x.intValue(), 9)
^ Integer.rotateLeft(x.intValue(), 17));
}
public static Integer P1(Integer x) throws Exception {
return Integer.valueOf(x.intValue()
^ Integer.rotateLeft(x.intValue(), 15)
^ Integer.rotateLeft(x.intValue(), 23));
}
/*
* public static Integer P0(Integer x) throws Exception { return
* Integer.valueOf(x.intValue() ^ cycleLeftShift(x, 9).intValue() ^
* cycleLeftShift(x, 17).intValue()); }
*
* public static Integer P1(Integer x) throws Exception { return
* Integer.valueOf(x.intValue() ^ cycleLeftShift(x, 15).intValue() ^
* cycleLeftShift(x, 23).intValue()); }
*
* public static Integer cycleLeftShift(Integer x, int bits) { int y =
* x.intValue(); while (bits > 0) { if (y < 0) { y = y << 1; y = y | 0x1; }
* else { y = y << 1; } bits--; } return Integer.valueOf(y); }
*/
public static byte[] padding(byte[] source) throws Exception {
if (source.length >= 0x2000000000000000l) {
throw new Exception();
}
long l = source.length * 8;
long k = 448 - (l + 1) % 512;
if (k < 0) {
k = k + 512;
}
System.out.println("k = " + k);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
baos.write(source);
baos.write(FirstPadding);
long i = k - 7;
while (i > 0) {
baos.write(ZeroPadding);
i -= 8;
}
baos.write(long2bytes(l));
System.out.println("paded size = " + baos.size());
return baos.toByteArray();
}
public static byte[] long2bytes(long l) {
byte[] bytes = new byte[8];
for (int i = 0; i < 8; i++) {
bytes[i] = (byte) (l >>> ((7 - i) * 8));
}
return bytes;
}
public static byte[] hash(byte[] source) throws Exception {
byte[] m1 = padding(source);
RSAPublicPrivateKeyAnalysis.printByteArray(m1, 16);
int n = m1.length / (512 / 8);
System.out.println("n = " + n);
byte[] b = null;
byte[] vi = IV.toByteArray();
byte[] vi1 = null;
for (int i = 0; i < n; i++) {
b = Arrays.copyOfRange(m1, i * 64, (i + 1) * 64);
vi1 = CF(vi, b);
vi = vi1;
}
return vi1;
}
public static byte[] CF(byte[] vi, byte[] bi) throws Exception {
int a, b, c, d, e, f, g, h;
a = toInteger(vi, 0);
b = toInteger(vi, 1);
c = toInteger(vi, 2);
d = toInteger(vi, 3);
e = toInteger(vi, 4);
f = toInteger(vi, 5);
g = toInteger(vi, 6);
h = toInteger(vi, 7);
int[] w = new int[68];
int[] w1 = new int[64];
for (int i = 0; i < 16; i++) {
w[i] = toInteger(bi, i);
}
for (int j = 16; j < 68; j++) {
w[j] = P1(w[j - 16] ^ w[j - 9] ^ Integer.rotateLeft(w[j - 3], 15))
^ Integer.rotateLeft(w[j - 13], 7) ^ w[j - 6];
}
for (int j = 0; j < 64; j++) {
w1[j] = w[j] ^ w[j + 4];
}
System.out.println("w");
printIntArray(w, 8);
System.out.println("w1");
printIntArray(w1, 8);
int ss1, ss2, tt1, tt2;
for (int j = 0; j < 64; j++) {
ss1 = Integer
.rotateLeft(
Integer.rotateLeft(a, 12) + e
+ Integer.rotateLeft(T(j), j), 7);
ss2 = ss1 ^ Integer.rotateLeft(a, 12);
tt1 = FF(a, b, c, j) + d + ss2 + w1[j];
tt2 = GG(e, f, g, j) + h + ss1 + w[j];
d = c;
c = Integer.rotateLeft(b, 9);
b = a;
a = tt1;
h = g;
g = Integer.rotateLeft(f, 19);
f = e;
e = P0(tt2);
}
byte[] v = toByteArray(a, b, c, d, e, f, g, h);
for (int i = 0; i < v.length; i++) {
v[i] = (byte) (v[i] ^ vi[i]);
}
return v;
}
public static int toInteger(byte[] source, int index) {
StringBuilder valueStr = new StringBuilder("");
for (int i = 0; i < 4; i++) {
valueStr.append(chars[(byte) ((source[index * 4 + i] & 0xF0) >> 4)]);
valueStr.append(chars[(byte) (source[index * 4 + i] & 0x0F)]);
}
return Long.valueOf(valueStr.toString(), 16).intValue();
}
public static byte[] toByteArray(int a, int b, int c, int d, int e, int f,
int g, int h) throws Exception {
ByteArrayOutputStream baos = new ByteArrayOutputStream(32);
baos.write(toByteArray(a));
baos.write(toByteArray(b));
baos.write(toByteArray(c));
baos.write(toByteArray(d));
baos.write(toByteArray(e));
baos.write(toByteArray(f));
baos.write(toByteArray(g));
baos.write(toByteArray(h));
return baos.toByteArray();
}
public static byte[] toByteArray(int i) {
byte[] byteArray = new byte[4];
byteArray[0] = (byte) (i >>> 24);
byteArray[1] = (byte) ((i & 0xFFFFFF) >>> 16);
byteArray[2] = (byte) ((i & 0xFFFF) >>> 8);
byteArray[3] = (byte) (i & 0xFF);
return byteArray;
}
public static void printIntArray(int[] intArray, int lineSize) {
for (int i = 0; i < intArray.length; i++) {
byte[] byteArray = toByteArray(intArray[i]);
int j = 0;
while (j < byteArray.length) {
System.out.print(chars[(byteArray[j] & 0xFF) >> 4]);
System.out.print(chars[byteArray[j] & 0xF]);
j++;
}
System.out.print(" ");
if (i % lineSize == (lineSize - 1)) {
System.out.println(" ");
}
}
}
public static void main(String[] args) throws Exception {
byte[] source = { 97, 98, 99, 100, 97, 98, 99, 100, 97, 98, 99, 100,
97, 98, 99, 100, 97, 98, 99, 100, 97, 98, 99, 100, 97, 98, 99,
100, 97, 98, 99, 100, 97, 98, 99, 100, 97, 98, 99, 100, 97, 98,
99, 100, 97, 98, 99, 100, 97, 98, 99, 100, 97, 98, 99, 100, 97,
98, 99, 100, 97, 98, 99, 100 };
byte[] sm3HashValue = hash(source);
RSAPublicPrivateKeyAnalysis.printByteArray(sm3HashValue, 16);
}
}
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