Android(安卓)Studio获取SHA1和MD5
16lz
2022-07-30
1、通过代码获取SHA1:
public static String getSHA1(Context context) { try { PackageManager pm = context.getPackageManager();// 获取包管理器 String packageName = context.getPackageName(); //获取包名 PackageInfo info = pm.getPackageInfo(packageName, PackageManager.GET_SIGNATURES); byte[] cert = info.signatures[0].toByteArray(); MessageDigest md = MessageDigest.getInstance("SHA1"); byte[] publicKey = md.digest(cert); StringBuffer hexString = new StringBuffer(); for (int i = 0; i < publicKey.length; i++) { String appendString = Integer.toHexString(0xFF & publicKey[i]).toUpperCase(Locale.US); if (appendString.length() == 1) { hexString.append("0"); } hexString.append(appendString); hexString.append(":"); } String result = hexString.toString(); return result.substring(0, result.length() - 1); } catch (Exception e) { e.printStackTrace(); } return null; }
2、通过代码获取MD5:
public static String getMD5(Context context) { try { PackageManager pm = context.getPackageManager();// 获取包管理器 String packageName = context.getPackageName(); //获取包名 PackageInfo packageInfo = pm.getPackageInfo(packageName, PackageManager.GET_SIGNATURES); Signature[] signatures = packageInfo.signatures;// 签名信息 byte[] signatureByte = signatures[0].toByteArray(); ByteArrayInputStream inputStream = new ByteArrayInputStream(signatureByte);// 将签名转换为字节数组流 CertificateFactory certFactory = CertificateFactory.getInstance("X.509");// 证书工厂类,这个类实现了出厂合格证算法的功能 X509Certificate cert = (X509Certificate) certFactory.generateCertificate(inputStream);// X509证书,X.509是一种非常通用的证书格式 MessageDigest md = MessageDigest.getInstance("MD5");// MD5加密算法 byte[] publicKey = md.digest(cert.getEncoded());//获得公钥 StringBuilder str = new StringBuilder(publicKey.length * 2); for (int i = 0; i < publicKey.length; i++) { String h = Integer.toHexString(publicKey[i]); int l = h.length(); if (l == 1) h = "0" + h; if (l > 2) h = h.substring(l - 2, l); str.append(h.toUpperCase()); if (i < (publicKey.length - 1)) str.append(':'); } return str.toString(); } catch (Exception e) { e.printStackTrace(); } return null; }
更多相关文章
- 【阿里云镜像】切换阿里巴巴开源镜像站镜像——Debian镜像
- Android屏幕分辨率正确获取及PX,DPI,DP,SP等的对应关系
- android 获取唯一标识
- android拍照与读取相册
- Android(安卓)热点开关状态的判断和获取热点ssid
- Android软键盘适配问题
- AIR Native Extension的使用(Android)一 : 打包ane
- android之BitMap
- Android中GPS定位的简单应用