Method hasValidFingerprint

app/src/main/java/eu/faircode/email/Helper.java:3319–3336

(Context context)

    }

    static boolean hasValidFingerprint(Context context) {
        if (hasValidFingerprint == null) {
            hasValidFingerprint = false;

            String signed = getFingerprint(context);
            String[] fingerprints = new String[]{
                    context.getString(R.string.fingerprint),
                    context.getString(R.string.fingerprint_amazon)
            };

            for (String fingerprint : fingerprints)
                if (Objects.equals(signed, fingerprint)) {
                    hasValidFingerprint = true;
                    break;
                }
        }
        return hasValidFingerprint;
    }

    static boolean isSignedByFDroid(Context context) {
        String signed = getFingerprint(context);