见这张我自己画的小图吧~ php中的进制转换 在php中 内置了挺多的进制转换函数 bindec() — 二进制转换为十进制 decbin() — 十进制转换为二进制 dechex() — 十进制转换为十六进制...decoct() — 十进制转换为八进制 hexdec() — 十六进制转换为十进制 octdec() — 八进制转换为十进制 base_convert()– 在任意进制之间转换数字 php中的2进制输出...所以当我们在UTF-8文件的php程序输出小写字母a的时候,经过解析会转换得到97这个10进制的数。...// $hexStr = str_replace(' ', '', $hexStr); // $send = ''; // for ($i=0; $i < strlen($hexStr); $i =...$i+2) { // $decStr = base_convert($hexStr[$i].
hexstring – bytearray – str x = '53216A' y = bytearray.fromhex(x) z = str(y) 以上这篇对Python3中bytes和HexStr
='0x000F') '0x000f' >>> Web3.toHex(hexstr='000F') '0x000f' >>> Web3.toHex(text='') '0x' >>> Web3.toHex...='0x636f776dc3b6') 'cowmö' >>> Web3.toText(hexstr='636f776dc3b6') 'cowmö' >>> Web3.toText(text='cowmö...') 'cowmö' Web3.toBytes Web3.toBytes(primitive=None, hexstr=None, text=None) 接受各种输入并返回等效字节。...='0x000F') b'\x00\x0f' >>> Web3.toBytes(hexstr='000F') b'\x00\x0f' >>> Web3.toBytes(text='') b'' >>>...php以太坊,主要是介绍使用php进行智能合约开发交互,进行账号创建、交易、转账、代币开发以及过滤器和事件等内容。 转载请标明出处。这里是原文
openssl genrsa -out private.pem 1024 然后根据私钥导出公钥 openssl rsa -in private.pem -pubout -out public.pem php...){ if (hexStr == null) return null; if (hexStr.length() % 2 !...= 0) return null; byte data[] = new byte[hexStr.length() / 2]; for (int...i = 0; i < hexStr.length() / 2; i++){ char hc = hexStr.charAt(2 * i); char...lc = hexStr.charAt(2 * i + 1); byte hb = hexChar2Byte(hc); byte lb = hexChar2Byte
推荐使用腾讯云 API 配套的 7 种常见的编程语言 SDK,已经封装了签名和请求过程,均已开源,支持 Python、Java、PHP、Go、NodeJS、.NET、C++。...= [NSString stringWithFormat:@"%x", (dataBytes[i]) & 0xff]; if ([hexStr length] == 2) {...stringWithFormat:@"%x",bytes[i]&0xff];///16进制数 if([newHexStr length]==1) hexStr...= [NSString stringWithFormat:@"%@0%@",hexStr,newHexStr]; else hexStr = [NSString...stringWithFormat:@"%@%@",hexStr,newHexStr]; } return hexStr; } 参考 OC : https://github.com/williammyuan
justastart.zip","rb") flag = [] while True: byte = fflag.read(1) if byte == "": break else: hexstr...= "%s" % byte.encode("hex") decnum = int(hexstr, 16) binnum = bin(int(hexstr, 16))[2:].zfill(8)...那么写一个phpinfo.php页面 我们发现php版本是7.0.7,接着向下看 我们发现不一样的东西。...php opcache开启,而且检验一致性的配置已经关闭了(7.0.7增加了这个配置,为了漏洞存在,我关闭了这个) 那么猜测后门被直接写入了bin中,那么大家肯定会想到这个工具。
( char * HexStr ) { int iResult = 0, iFlag = 1; //判断字符串是否合法 if( NULL == HexStr || ( *HexStr...== '+' && *(HexStr+1) == '\0' ) || ( *HexStr == '-' && *(HexStr+1) == '\0' ) || ( *HexStr =...= 0x30 && *(HexStr+1) == 0x58 && *(HexStr+2) == '\0' ) || ( *HexStr == 0x30 && *(HexStr+1) ==...0x78 && *(HexStr+2) == '\0' ) ) { return -1; } //指针变量p指向字符串的首位 char * p = HexStr...( HexStr ); while( (--p+1) !
php版 <?...php /* * @Author: ZeroArt * @Date: 2021-02-25 21:41:02 * @Link: http://lykep.com * @LastEditors:...| 192), o.push(63 & n | 128)) : o.push(255 & n); } return o; } // 数组转hex字符串 function parseByte2HexStr...a, b) { return dec(m(a, n(b))) } // 加密数据,e和n分别为t和v function encode(e, n) { return parseByte2HexStr
//判断字符串是否合法 if( iHexStrLen == 0 || ( *HexStr == '+' && iHexStrLen == 1 ) || ( *HexStr == '-'...&& iHexStrLen == 1 ) || ( *HexStr == 0x30 && *(HexStr+1) == 0x78 && iHexStrLen == 2 ) )...//判断字符串是否合法 if( iHexStrLen == 0 || ( *HexStr == '+' && iHexStrLen == 1 ) || ( *HexStr == '-'...&& iHexStrLen == 1 ) || ( *HexStr == 0x30 && *(HexStr+1) == 0x78 && iHexStrLen == 2 ) )...iFlag = -1; } //长度去掉"0x"开头的十六进制标识符 else if( *HexStr == 0x30 && *(HexStr+1) == 0x78 )
db.endTransaction(); } 修改 private void update(){ /** * 对于uuid的比较 ,转换为16进制字符串 */ String hexStr...= new ContentValues(); cv.put("name","sky-mxc"); cv.put("age",23); Log.e(TAG, "update: hexStr...="+hexStr); db.beginTransaction(); db.update("tb0",cv,"id = x'"+hexStr+"'",null); db.setTransactionSuccessful...= UUIDUtils.bytesToHexStr(ids); sb.append("hexStr="+hexStr); sb.append(";\n");...Log.e(TAG, "query: hexStr="+hexStr); sb.append("name="+name); sb.append(";\n");
return messageDigest.digest(); } /** * parseHexStrToByte * * @param hexStr...hexStr * @return byte */ private byte[] parseHexStrToByte(String hexStr) { if...(hexStr.length() < 1) { return null; } byte[] result = new byte[hexStr.length...() / 2]; for (int i = 0; i < hexStr.length() / 2; i++) { int high = Integer.parseInt...(hexStr.substring(i * 2, i * 2 + 1), 16); int low = Integer.parseInt(hexStr.substring(i *
; } byte[] encryptResult = encrypt(content, PASSWORD); String encryptResultStr = parseByte2HexStr...} sb.append(hex.toUpperCase()); } return sb.toString(); } /** * 将16进制转换为二进制 * @param hexStr...* @return */ private static byte[] parseHexStr2Byte(String hexStr) { if (hexStr.length() < 1)...return null; byte[] result = new byte[hexStr.length() / 2]; for (int i = 0; i < hexStr.length...(hexStr.substring(i * 2 + 1, i * 2 + 2), 16); result[i] = (byte) (high * 16 + low); } return result
res.getBytes():res.getBytes(charset); return parseByte2HexStr(cipher.doFinal(resBytes...) { if (hexStr.length() < 1) return null; byte[] result = new byte[hexStr.length...()/2]; for (int i = 0;i< hexStr.length()/2; i++) { int high = Integer.parseInt(hexStr.substring...// * @return // */ // public static byte[] parseHexStr2Byte(String hexStr) { // if (hexStr.length...int i = 0; i < hexStr.length() / 2; i++) { // int high = Integer.parseInt(hexStr.substring(i
srccopy.at(y, x); int b = color[0]; int g = color[1]; int r = color[2]; string hexstr...RGB(" + to_string(r) + "," + to_string(g) + "," + to_string(b) + ")"; string hextext = "HEX:" + hexstr...imshow(showsrc, srccopy); } } string rgb2hex(int r, int g, int b, bool ishead) { stringstream hexstr...; if (ishead) hexstr << "#"; hexstr << hex << (r << 16 | g << 8 | b); cout << "rgb:" << r << "...," << g << "," << b << " hex:" << hexstr.str() << endl; return hexstr.str(); } 微卡智享 划重点 在鼠标事件中获取图像当前点颜色时
"MD5"); digest.reset(); digest.update(userName.getBytes()); String hexstr...(); i += 2) { sb.append(hexstr.charAt(i)); } if (("flag{" + sb.toString...sb.append(hexstr.charAt(i)); } System.out.println(sb.toString()); } } Hello World!...java运行工具执行 隔位取操作 java public class HelloWorld { public static void main(String []args) { String hexstr...(); i += 2) { sb.append(hexstr.charAt(i)); } System.out.println(sb.toString
NSData alloc] initWithBytes:byte length:24]; Byte数组->16进制数 Byte bytes = (Byte )[aData bytes]; NSString *hexStr...NSString *newHexStr = [NSString stringWithFormat:@"%x",bytes[i]&0xff];///16进制数 if([newHexStr length]==1) hexStr...= [NSString stringWithFormat:@"%@0%@",hexStr,newHexStr]; else hexStr = [NSString stringWithFormat:@"...%@%@",hexStr,newHexStr]; } NSLog(@"bytes 的16进制数为:%@",hexStr); 16进制数->Byte数组 ///// 将16进制数据转化成Byte 数组 NSString
res.getBytes() : res.getBytes(charset); return parseByte2HexStr(cipher.doFinal(resBytes...) { if (hexStr.length() < 1) return null; byte[] result = new byte[hexStr.length...(hexStr.substring(i * 2, i * 2 + 1), 16); int low = Integer.parseInt(hexStr.substring(i *...) { if (hexStr.length() < 1) return null; byte[] result = new byte[hexStr.length...(hexStr.substring(i * 2, i * 2 + 1), 16); int low = Integer.parseInt(hexStr.substring(i *
一般推荐的长度就是1024位(128字节) JAVA需要使用的私钥需要经过PKCS#8编码,PHP程序不需要 当前私钥格式需要转换为pkcs#8的格式,命令为: pkcs8 -topk8 -inform...//DES加密数据 byte[] encrypt = DESCoder.encrypt(dataByte.getBytes(), desKey); map.put("data", parseByte2HexStr...) { if (hexStr.length() < 1) return null; byte[] result = new byte[hexStr.length() / 2]; for (int i =...0; i < hexStr.length() / 2; i++) { int high = Integer.parseInt(hexStr.substring(i * 2, i * 2 + 1), 16...); int low = Integer.parseInt(hexStr.substring(i * 2 + 1, i * 2 + 2), 16); result[i] = (byte) (high *
/** * 二进位组转十六进制字符串 * * @param buf 二进位组 * @return 十六进制字符串 */ public static String parseByte2HexStr...十六进制字符串 * @return 二进位组 */ public static byte[] parseHexStr2Byte(String hexStr) { if...(hexStr.length() < 1) return null; byte[] result = new byte[hexStr.length() / 2]; for...(int i = 0; i < hexStr.length() / 2; i++) { int high = Integer.parseInt(hexStr.substring...(i * 2, i * 2 + 1), 16); int low = Integer.parseInt(hexStr.substring(i * 2 + 1, i * 2 + 2
} return hs.toString().toUpperCase(); } /** * 十六进转二进制 * * @param hexStr...待转换16进制字符串 * @return 二进制字节组 */ public static byte[] hex2byte(String hexStr) {...if (hexStr == null) return null; hexStr = hexStr.trim(); int len = hexStr.length...return null; byte[] digest = new byte[len / 2]; try { for (int i = 0; i < hexStr.length...(); i += 2) { digest[i / 2] = (byte) Integer.decode("0x" + hexStr.substring(i, i + 2
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