Mirrors/FairEmail
1
0
Fork 0
mirror of https://github.com/M66B/FairEmail.git synced 2025-12-27 08:01:50 +01:00
Code Issues Packages Projects Releases Wiki Activity

Check signature

Browse Source
This commit is contained in:
M66B
2018-09-27 06:44:02 +00:00
parent 2b5ae57b06
commit b01cf117c3
4 changed files with 40 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
app/src/main/java/eu/faircode/email/Helper.java
View File

@@ -23,6 +23,8 @@ import android.accounts.Account;
import android.accounts.AccountManager;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.res.TypedArray;
import android.net.Uri;
import android.preference.PreferenceManager;
@@ -328,6 +330,30 @@ public class Helper {
}
}
public static String getFingerprint(Context context) {
try {
PackageManager pm = context.getPackageManager();
String pkg = context.getPackageName();
PackageInfo info = pm.getPackageInfo(pkg, PackageManager.GET_SIGNATURES);
byte[] cert = info.signatures[0].toByteArray();
MessageDigest digest = MessageDigest.getInstance("SHA1");
byte[] bytes = digest.digest(cert);
StringBuilder sb = new StringBuilder();
for (byte b : bytes)
sb.append(Integer.toString(b & 0xff, 16).toUpperCase());
return sb.toString();
} catch (Throwable ex) {
Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex));
return null;
}
}
public static boolean hasValidFingerprint(Context context) {
String signed = getFingerprint(context);
String expected = context.getString(R.string.fingerprint);
return (signed != null && signed.equals(expected));
}
static boolean isPro(Context context) {
if (false && BuildConfig.DEBUG)
return true;