本文實例講述了Android實現獲取簽名及公鑰的方法。分享給大家供大家參考。具體如下：
1. java代碼如下：
private byte[] getSign(Context context) { PackageManager pm = context.getPackageManager(); List<PackageInfo> apps = pm .getInstalledPackages(PackageManager.GET_SIGNATURES); Iterator<PackageInfo> iter = apps.iterator(); while (iter.hasNext()) { PackageInfo info = iter.next(); String packageName = info.packageName; //按包名 取簽名 if (packageName.equals("com.test.test")) { return info.signatures[0].toByteArray(); } } return null;}2. java代碼如下：
public static String getPublicKey(byte[] signature) {try { CertificateFactory certFactory = CertificateFactory .getInstance("X.509"); X509Certificate cert = (X509Certificate) certFactory .generateCertificate(new ByteArrayInputStream(signature)); String publickey = cert.getPublicKey().toString(); publickey = publickey.substring(publickey.indexOf("modulus: ") + 9, publickey.indexOf("/n", publickey.indexOf("modulus:"))); Log.d("TRACK", publickey); return publickey; } catch (CertificateException e) { e.printStackTrace(); } return null;}希望本文所述對大家的Android程序設計有所幫助。
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