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import java.security.cert.CertificateException;<br /> import java.security.cert.CertificateFactory;<br /> import java.security.cert.X509Certificate;<br /> PackageManager pckMan = getPackageManager();</p> <p> String issuerDN = null;<br /> String subjectDN = null;<br /> String publickey = null;</p> <p> boolean isSystemApp = false;</p> <p> List<PackageInfo> packs = pckMan.getInstalledPackages(PackageManager.GET_SIGNATURES);</p> <p> int count = packs.size();</p> <p> for (int i = 0; i < count; i++) {<br /> isSystemApp = false;</p> <p> PackageInfo pi = packs.get(i);<br /> if (pi.versionName == null)<br /> continue; </p> <p> if ((pi.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) > 0) {<br /> isSystemApp = true;<br /> }</p> <p> try {<br /> byte[] signature = pi.signatures[0].toByteArray();<br /> String hash = md5(signature);<br /> CertificateFactory certFactory =<br /> CertificateFactory.getInstance("X.509");<br /> X509Certificate cert = (X509Certificate)<br /> certFactory.generateCertificate(<br /> new ByteArrayInputStream(signature));</p> <p> String appname = pi.applicationInfo.loadLabel(pckMan).toString();</p> <p> Log.d("TRACK", appname);<br /> issuerDN = cert.getIssuerDN().toString();<br /> Log.d("TRACK", issuerDN);<br /> subjectDN = cert.getSubjectDN().toString();<br /> Log.d("TRACK", subjectDN);<br /> publickey = cert.getPublicKey().toString();<br /> Log.d("TRACK", publickey);<br /> Log.d("TRACK-HASH", hash);<br /> } catch (CertificateException e) {<br /> e.printStackTrace();<br /> }</p> <p> }<br />
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