鍦∕D5綆楁硶涓紝棣栧厛闇瑕佸淇℃伅榪涜濉厖錛屼嬌鍏跺瓧鑺傞暱搴﹀512姹備綑鐨勭粨鏋滅瓑浜?48銆傚洜姝わ紝淇℃伅鐨勫瓧鑺傞暱搴︼紙Bits Length錛夊皢琚墿灞曡嚦N*512+448錛屽嵆N*64+56涓瓧鑺傦紙Bytes錛夛紝N涓轟竴涓鏁存暟銆傚～鍏呯殑鏂規硶濡備笅錛屽湪淇℃伅鐨勫悗闈㈠～鍏呬竴涓?鍜屾棤鏁頒釜0錛岀洿鍒版弧瓚充笂闈㈢殑鏉′歡鏃舵墠鍋滄鐢?瀵逛俊鎭殑濉厖銆傜劧鍚庯紝鍦ㄥ湪榪欎釜緇撴灉鍚庨潰闄勫姞涓涓互64浣嶄簩榪涘埗琛ㄧず鐨勫～鍏呭墠淇℃伅闀垮害銆傜粡榪囪繖涓ゆ鐨勫鐞嗭紝鐜板湪鐨勪俊鎭瓧鑺傞暱搴?N*512+448+64=(N+1)*512錛屽嵆闀垮害鎭板ソ鏄?12鐨勬暣鏁板嶃傝繖鏍峰仛鐨勫師鍥犳槸涓烘弧瓚沖悗闈㈠鐞嗕腑瀵逛俊鎭暱搴︾殑瑕佹眰銆?/span>
鍏蜂綋鐨勪竴涓狹D5瀹炵幇錛?/span>
1
package com.meng;
2
3
4import java.security.MessageDigest;
5
6
/**
7
* <p>
8* Title:
9* </p>
10* <p>
11* Description:
12* </p>
13* <p>
14* Copyright: Copyright (c) 2003
15* </p>
16* <p>
17* Company:
18* </p>
19*
20* @author unascribed
21* @version 1.0
22
*/
23
24public class MD5 {
25
26
private final static String[] hexDigits = { "0", "1", "2", "3", "4", "5",
27
"6", "7", "8", "9", "a", "b", "c", "d", "e", "f" };
28
29 /**
30 * 杞崲瀛楄妭鏁扮粍涓?6榪涘埗瀛椾覆
31 *
32 * @param b
33 * 瀛楄妭鏁扮粍
34 * @return 16榪涘埗瀛椾覆
35 */
36
37 public static String byteArrayToHexString(byte[] b) {
38 StringBuffer resultSb = new StringBuffer();
39 for (int i = 0; i < b.length; i++) {
40 resultSb.append(byteToHexString(b[i]));
41 }
42 return resultSb.toString();
43 }
44
45 private static String byteToHexString(byte b) {
46 int n = b;
47 if (n < 0)
48 n = 256 + n;
49 int d1 = n / 16;
50 int d2 = n % 16;
51 return hexDigits[d1] + hexDigits[d2];
52 }
53
54 public static String MD5Encode(String origin) {
55 String resultString = null;
56
57 try {
58 resultString = new String(origin);
59 MessageDigest md = MessageDigest.getInstance("MD5");
60 resultString = byteArrayToHexString(md.digest(resultString
61 .getBytes()));
62 } catch (Exception ex) {
63
64 }
65 return resultString;
66 }
67
68 public static void main(String[] args) {
69 System.err.println(MD5Encode("鍝堝搱"));
70
71
72
73 }
74}
75
76
package com.meng;2
3
4
import java.security.MessageDigest;5
6
/**
7
* <p>8
* Title:9
* </p>10
* <p>11
* Description:12
* </p>13
* <p>14
* Copyright: Copyright (c) 200315
* </p>16
* <p>17
* Company:18
* </p>19
* 20
* @author unascribed21
* @version 1.022
*/23
24
public class MD5 {
25
26
private final static String[] hexDigits = { "0", "1", "2", "3", "4", "5",
27
"6", "7", "8", "9", "a", "b", "c", "d", "e", "f" };28
29
/**30
* 杞崲瀛楄妭鏁扮粍涓?6榪涘埗瀛椾覆31
* 32
* @param b33
* 瀛楄妭鏁扮粍34
* @return 16榪涘埗瀛椾覆35
*/36
37
public static String byteArrayToHexString(byte[] b) {38
StringBuffer resultSb = new StringBuffer();39
for (int i = 0; i < b.length; i++) {40
resultSb.append(byteToHexString(b[i]));41
}42
return resultSb.toString();43
}44
45
private static String byteToHexString(byte b) {46
int n = b;47
if (n < 0)48
n = 256 + n;49
int d1 = n / 16;50
int d2 = n % 16;51
return hexDigits[d1] + hexDigits[d2];52
}53
54
public static String MD5Encode(String origin) {55
String resultString = null;56
57
try {58
resultString = new String(origin);59
MessageDigest md = MessageDigest.getInstance("MD5");60
resultString = byteArrayToHexString(md.digest(resultString61
.getBytes()));62
} catch (Exception ex) {63
64
}65
return resultString;66
}67
68
public static void main(String[] args) {69
System.err.println(MD5Encode("鍝堝搱"));70
71
72
73
}74
}75
76
]]>
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