/// <summary> /// md5　32位加密(大写) /// </summary> /// <param name="str"></param> /// <returns></returns> static string usermd5(string str) { string cl = str; string pwd = ""; md5 md5 = md5.create();//实例化一个md5对像 // 加密后是一个字节类型的数组，这里要注意编码utf8/unicode等的选择　 byte[] s = md5.computehash(encoding.utf8.getbytes(cl)); // 通过使用循环，将字节类型的数组转换为字符串，此字符串是常规字符格式化所得 for (int i = 0; i < s.length; i++) { // 将得到的字符串使用十六进制类型格式。格式后的字符是小写的字母，如果使用大写（x）则格式后的字符是大写字符 pwd = pwd + s[i].tostring("x"); } return pwd; } /// <summary> /// md5 16位加密 加密后密码为小写 /// </summary> /// <param name="convertstring"></param> /// <returns></returns> public static string getmd5str(string convertstring) { md5cryptoserviceprovider md5 = new md5cryptoserviceprovider(); string t2 = bitconverter.tostring(md5.computehash(utf8encoding.default.getbytes(convertstring)), 4, 8); t2 = t2.replace("-", ""); t2 = t2.tolower(); return t2; } /// <summary> /// md5 16位加密 加密后密码为大写 /// </summary> /// <param name="convertstring"></param> /// <returns></returns> public static string getmd5str(string convertstring) { md5cryptoserviceprovider md5 = new md5cryptoserviceprovider(); string t2 = bitconverter.tostring(md5.computehash(utf8encoding.default.getbytes(convertstring)), 4, 8); t2 = t2.replace("-", ""); return t2; } /// <summary> /// md5加密(小写) /// </summary> /// <param name="input"></param> /// <returns></returns> private static string md5hash(string input) { md5cryptoserviceprovider md5hasher = new md5cryptoserviceprovider(); byte[] data = md5hasher.computehash(encoding.default.getbytes(input)); stringbuilder sbuilder = new stringbuilder(); for (int i = 0; i < data.length; i++) { sbuilder.append(data[i].tostring("x2")); } return sbuilder.tostring(); }
以上就是c# md5hash的用法及实例的详细内容。