java 内置base64+md5加密运用代码,及指定字符md5加密代码
2014-02-09 17:00
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java 内置base64+md5加密运用代码
md5+base64
手写md5加密代码
package org.rui.base64; import java.io.IOException; import sun.misc.BASE64Decoder; import sun.misc.BASE64Encoder; public class Base64 { /** * @param args */ public static void main(String[] args) { Base64 base=new Base64(); String pass="123"; String en=base.encode(pass); System.out.println(en); String de=base.decode(en); System.out.println(de); } //译成密码 public String encode(String pass){ BASE64Encoder base=new BASE64Encoder(); pass=base.encode(pass.getBytes()); return pass; } // public String encode(byte [] b){ return encode(new String(b)); } //解密 public String decode(String pass) { BASE64Decoder base=new BASE64Decoder(); byte[] b = null; try { b = base.decodeBuffer(pass); } catch (IOException e) { e.printStackTrace(); } return new String(b); } }
md5+base64
package org.rui.base64; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; public class Md5 { /** * @param args */ public static void main(String[] args) { String pass="1234"; byte[] b=getDigest(pass.getBytes()); //System.out.println("md5"+new String(b)); Base64 b64= new Base64(); pass=b64.encode(b); //System.out.println("md5加密后再base64:"+pass); //db 假如数据库密码为 String dbpass="gdyb21LQTT8229gxPtBV"; System.out.println(pass); System.out.println(dbpass); System.out.println("密码是否一致:"+pass.equals(dbpass)); } //MD5加密 public static byte[] getDigest(byte[] b){ try { MessageDigest md=MessageDigest.getInstance("MD5"); md.update(b); return md.digest(); } catch (NoSuchAlgorithmException e) { //FIXME:DDD e.printStackTrace(); } return null; } }
手写md5加密代码
package snail.su.rui.util; import java.security.MessageDigest; public class Md5 { public final static String MD5(String s){ char hexDigits[]={'0','1','2','3','4','5','9','7','8','6', 'l','i','a','n','g','r'}; // char hexDigits[]={'0','1','2','3','4','5','6','7','8','9', // 'h','e','g','k','e','f'}; //e10hkg3949eh59heee56e057f20f883e try { byte[] strTemp=s.getBytes(); MessageDigest mdTemp=MessageDigest.getInstance("MD5"); mdTemp.update(strTemp); byte[] md=mdTemp.digest(); int j=md.length; char str[]=new char[j*2]; int k=0; for(int i=0;i<j;i++){ byte byte0=md[i]; str[k++]=hexDigits[byte0>>>4 & 0xf]; str[k++]=hexDigits[byte0 & 0xf]; } return new String(str); } catch (Exception e) { return null; } } public static void main(String [] args){ String addmd5=Md5.MD5("123456"); System.out.println("123="+addmd5); if(addmd5.equals("e10adc3949ba59abbe56e057f20f883e")){ System.out.println("Md5.main()"); } } }
package accp.scurity.util; public class MD5EncoderCustomer implements Encoder { private static final int S11 = 7; private static final int S12 = 12; private static final int S13 = 17; private static final int S14 = 22; private static final int S21 = 5; private static final int S22 = 9; private static final int S23 = 14; private static final int S24 = 20; private static final int S31 = 4; private static final int S32 = 11; private static final int S33 = 16; private static final int S34 = 23; private static final int S41 = 6; private static final int S42 = 10; private static final int S43 = 15; private static final int S44 = 21; private static final byte[] PADDING = { -128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; private long[] state = new long[4];// state (ABCD) private long[] count = new long[2];// number of bits, modulo 2^64 (lsb// // first) private byte[] buffer = new byte[64]; // input buffer private String digestHexStr; private byte[] digest = new byte[16]; private MD5EncoderCustomer() { md5Init(); return; } public String encrypt(String password) { md5Init(); md5Update(password.getBytes(), password.length()); md5Final(); digestHexStr = ""; for (int i = 0; i < 16; i++) { digestHexStr += byte2Hex(digest[i]); } return digestHexStr; } public String decrypt(String password, String key) { throw new UnsupportedOperationException("Not support the method"); } public String encrypt(String password, String salt) { return encrypt(password); } private void md5Init() { count[0] = 0L; count[1] = 0L; // Load magic initialization constants. state[0] = 0x67452301L; state[1] = 0xefcdab89L; state[2] = 0x98badcfeL; state[3] = 0x10325476L; return; } private long F(long x, long y, long z) { return (x & y) | ((~x) & z); } private long G(long x, long y, long z) { return (x & z) | (y & (~z)); } private long H(long x, long y, long z) { return x ^ y ^ z; } private long I(long x, long y, long z) { return y ^ (x | (~z)); } private long FF(long a, long b, long c, long d, long x, long s, long ac) { a += F(b, c, d) + x + ac; a = ((int) a << s) | ((int) a >>> (32 - s)); a += b; return a; } private long GG(long a, long b, long c, long d, long x, long s, long ac) { a += G(b, c, d) + x + ac; a = ((int) a << s) | ((int) a >>> (32 - s)); a += b; return a; } private long HH(long a, long b, long c, long d, long x, long s, long ac) { a += H(b, c, d) + x + ac; a = ((int) a << s) | ((int) a >>> (32 - s)); a += b; return a; } private long II(long a, long b, long c, long d, long x, long s, long ac) { a += I(b, c, d) + x + ac; a = ((int) a << s) | ((int) a >>> (32 - s)); a += b; return a; } private void md5Update(byte[] inbuf, int inputLen) { int i, index, partLen; byte[] block = new byte[64]; index = (int) (count[0] >>> 3) & 0x3F; // Update number of bits if ((count[0] += (inputLen << 3)) < (inputLen << 3)) count[1]++; count[1] += (inputLen >>> 29); partLen = 64 - index; // Transform. as many times as possible. if (inputLen >= partLen) { md5Memcpy(buffer, inbuf, index, 0, partLen); md5Transform(buffer); for (i = partLen; i + 63 < inputLen; i += 64) { md5Memcpy(block, inbuf, 0, i, 64); md5Transform(block); } index = 0; } else { i = 0; } // Buffer remaining input md5Memcpy(buffer, inbuf, index, i, inputLen - i); } private void md5Final() { byte[] bits = new byte[8]; int index, padLen; // Save number of bits Encode(bits, count, 8); // Pad out to 56 mod 64. index = (int) (count[0] >>> 3) & 0x3f; padLen = (index < 56) ? (56 - index) : (120 - index); md5Update(PADDING, padLen); // Append length (before padding) md5Update(bits, 8); // Store state in digest Encode(digest, state, 16); } private void md5Memcpy(byte[] output, byte[] input, int outpos, int inpos, int len) { int i; for (i = 0; i < len; i++) output[outpos + i] = input[inpos + i]; } private void md5Transform(byte block[]) { long a = state[0], b = state[1], c = state[2], d = state[3]; long[] x = new long[16]; decode(x, block, 64); // Round 1 a = FF(a, b, c, d, x[0], S11, 0xd76aa478L); /* 1 */ d = FF(d, a, b, c, x[1], S12, 0xe8c7b756L); /* 2 */ c = FF(c, d, a, b, x[2], S13, 0x242070dbL); /* 3 */ b = FF(b, c, d, a, x[3], S14, 0xc1bdceeeL); /* 4 */ a = FF(a, b, c, d, x[4], S11, 0xf57c0fafL); /* 5 */ d = FF(d, a, b, c, x[5], S12, 0x4787c62aL); /* 6 */ c = FF(c, d, a, b, x[6], S13, 0xa8304613L); /* 7 */ b = FF(b, c, d, a, x[7], S14, 0xfd469501L); /* 8 */ a = FF(a, b, c, d, x[8], S11, 0x698098d8L); /* 9 */ d = FF(d, a, b, c, x[9], S12, 0x8b44f7afL); /* 10 */ c = FF(c, d, a, b, x[10], S13, 0xffff5bb1L); /* 11 */ b = FF(b, c, d, a, x[11], S14, 0x895cd7beL); /* 12 */ a = FF(a, b, c, d, x[12], S11, 0x6b901122L); /* 13 */ d = FF(d, a, b, c, x[13], S12, 0xfd987193L); /* 14 */ c = FF(c, d, a, b, x[14], S13, 0xa679438eL); /* 15 */ b = FF(b, c, d, a, x[15], S14, 0x49b40821L); /* 16 */ // Round 2 a = GG(a, b, c, d, x[1], S21, 0xf61e2562L); /* 17 */ d = GG(d, a, b, c, x[6], S22, 0xc040b340L); /* 18 */ c = GG(c, d, a, b, x[11], S23, 0x265e5a51L); /* 19 */ b = GG(b, c, d, a, x[0], S24, 0xe9b6c7aaL); /* 20 */ a = GG(a, b, c, d, x[5], S21, 0xd62f105dL); /* 21 */ d = GG(d, a, b, c, x[10], S22, 0x2441453L); /* 22 */ c = GG(c, d, a, b, x[15], S23, 0xd8a1e681L); /* 23 */ b = GG(b, c, d, a, x[4], S24, 0xe7d3fbc8L); /* 24 */ a = GG(a, b, c, d, x[9], S21, 0x21e1cde6L); /* 25 */ d = GG(d, a, b, c, x[14], S22, 0xc33707d6L); /* 26 */ c = GG(c, d, a, b, x[3], S23, 0xf4d50d87L); /* 27 */ b = GG(b, c, d, a, x[8], S24, 0x455a14edL); /* 28 */ a = GG(a, b, c, d, x[13], S21, 0xa9e3e905L); /* 29 */ d = GG(d, a, b, c, x[2], S22, 0xfcefa3f8L); /* 30 */ c = GG(c, d, a, b, x[7], S23, 0x676f02d9L); /* 31 */ b = GG(b, c, d, a, x[12], S24, 0x8d2a4c8aL); /* 32 */ // Round 3 a = HH(a, b, c, d, x[5], S31, 0xfffa3942L); /* 33 */ d = HH(d, a, b, c, x[8], S32, 0x8771f681L); /* 34 */ c = HH(c, d, a, b, x[11], S33, 0x6d9d6122L); /* 35 */ b = HH(b, c, d, a, x[14], S34, 0xfde5380cL); /* 36 */ a = HH(a, b, c, d, x[1], S31, 0xa4beea44L); /* 37 */ d = HH(d, a, b, c, x[4], S32, 0x4bdecfa9L); /* 38 */ c = HH(c, d, a, b, x[7], S33, 0xf6bb4b60L); /* 39 */ b = HH(b, c, d, a, x[10], S34, 0xbebfbc70L); /* 40 */ a = HH(a, b, c, d, x[13], S31, 0x289b7ec6L); /* 41 */ d = HH(d, a, b, c, x[0], S32, 0xeaa127faL); /* 42 */ c = HH(c, d, a, b, x[3], S33, 0xd4ef3085L); /* 43 */ b = HH(b, c, d, a, x[6], S34, 0x4881d05L); /* 44 */ a = HH(a, b, c, d, x[9], S31, 0xd9d4d039L); /* 45 */ d = HH(d, a, b, c, x[12], S32, 0xe6db99e5L); /* 46 */ c = HH(c, d, a, b, x[15], S33, 0x1fa27cf8L); /* 47 */ b = HH(b, c, d, a, x[2], S34, 0xc4ac5665L); /* 48 */ // Round 4 a = II(a, b, c, d, x[0], S41, 0xf4292244L); /* 49 */ d = II(d, a, b, c, x[7], S42, 0x432aff97L); /* 50 */ c = II(c, d, a, b, x[14], S43, 0xab9423a7L); /* 51 */ b = II(b, c, d, a, x[5], S44, 0xfc93a039L); /* 52 */ a = II(a, b, c, d, x[12], S41, 0x655b59c3L); /* 53 */ d = II(d, a, b, c, x[3], S42, 0x8f0ccc92L); /* 54 */ c = II(c, d, a, b, x[10], S43, 0xffeff47dL); /* 55 */ b = II(b, c, d, a, x[1], S44, 0x85845dd1L); /* 56 */ a = II(a, b, c, d, x[8], S41, 0x6fa87e4fL); /* 57 */ d = II(d, a, b, c, x[15], S42, 0xfe2ce6e0L); /* 58 */ c = II(c, d, a, b, x[6], S43, 0xa3014314L); /* 59 */ b = II(b, c, d, a, x[13], S44, 0x4e0811a1L); /* 60 */ a = II(a, b, c, d, x[4], S41, 0xf7537e82L); /* 61 */ d = II(d, a, b, c, x[11], S42, 0xbd3af235L); /* 62 */ c = II(c, d, a, b, x[2], S43, 0x2ad7d2bbL); /* 63 */ b = II(b, c, d, a, x[9], S44, 0xeb86d391L); /* 64 */ state[0] += a; state[1] += b; state[2] += c; state[3] += d; } private void Encode(byte[] output, long[] input, int len) { int i, j; for (i = 0, j = 0; j < len; i++, j += 4) { output[j] = (byte) (input[i] & 0xffL); output[j + 1] = (byte) ((input[i] >>> 8) & 0xffL); output[j + 2] = (byte) ((input[i] >>> 16) & 0xffL); output[j + 3] = (byte) ((input[i] >>> 24) & 0xffL); } } private void decode(long[] output, byte[] input, int len) { int i, j; for (i = 0, j = 0; j < len; i++, j += 4) output[i] = b2iu(input[j]) | (b2iu(input[j + 1]) << 8) | (b2iu(input[j + 2]) << 16) | (b2iu(input[j + 3]) << 24); return; } private long b2iu(byte b) { return b < 0 ? b & 0x7F + 128 : b; } private String byte2Hex(byte ib) { char[] Digit = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' }; char[] ob = new char[2]; ob[0] = Digit[(ib >>> 4) & 0X0F]; ob[1] = Digit[ib & 0X0F]; String s = new String(ob); return s; } }
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