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public static String MD5(String plainText, String charset) throws Exception {
MessageDigest md = MessageDigest.getInstance("MD5");
md.update(plainText.getBytes(charset));
byte b[] = md.digest();
int i;
StringBuffer buf = new StringBuffer("");
for (int offset = 0; offset < b.length; offset++) {
i = b[offset];
if (i < 0)
i += 256;
if (i < 16)
buf.append("0");
buf.append(Integer.toHexString(i));
}
return buf.toString();
}
/**
* base64编码
*/
public static String base64(String str, String charset) throws Exception{
return (new sun.misc.BASE64Encoder()).encode(str.getBytes(charset));
}
1.//欲进行md5加密的字符串
2. string test = "123abc";
3.
4. //获取加密服务
5. System.Security.Cryptography.MD5CryptoServiceProvider md5CSP = new System.Security.Cryptography.MD5CryptoServiceProvider();
6.
7. //获取要加密的字段,并转化为Byte[]数组
8. byte[] testEncrypt = System.Text.Encoding.Unicode.GetBytes(test);
9.
10. //加密Byte[]数组
11. byte[] resultEncrypt = md5CSP.ComputeHash(testEncrypt);
12.
13. //将加密后的数组转化为字段(普通加密)
14. string testResult = System.Text.Encoding.Unicode.GetString(resultEncrypt);
15.
16. //作为密码方式加密
17. string Encrypt PWD = System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(test, "MD5");