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authorParménides GV <parmegv@sdf.org>2014-10-09 18:16:28 +0200
committerParménides GV <parmegv@sdf.org>2014-10-09 18:22:59 +0200
commit5bb1d3baf93c76e7ec70a8abd5584c33f75383b8 (patch)
treee18229cf5bc51d838d0356887ca744b9910a6b08 /app/src/debug/java/se
parent2b56dd61c0bd9eb6f71405d1d7f07f3051b29601 (diff)
Check self-signed fingerprint.
Diffstat (limited to 'app/src/debug/java/se')
-rw-r--r--app/src/debug/java/se/leap/bitmaskclient/ProviderAPI.java49
1 files changed, 36 insertions, 13 deletions
diff --git a/app/src/debug/java/se/leap/bitmaskclient/ProviderAPI.java b/app/src/debug/java/se/leap/bitmaskclient/ProviderAPI.java
index e729d0bc..c7461d7a 100644
--- a/app/src/debug/java/se/leap/bitmaskclient/ProviderAPI.java
+++ b/app/src/debug/java/se/leap/bitmaskclient/ProviderAPI.java
@@ -43,6 +43,7 @@ import java.net.UnknownHostException;
import java.security.KeyManagementException;
import java.security.KeyStore;
import java.security.KeyStoreException;
+import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.security.cert.CertificateEncodingException;
@@ -589,21 +590,43 @@ public class ProviderAPI extends IntentService {
return CA_CERT_DOWNLOADED;
}
- private boolean validCertificate(String cert_string) {
- boolean result = false;
- if(!ConfigHelper.checkErroneousDownload(cert_string)) {
- X509Certificate certCert = ConfigHelper.parseX509CertificateFromString(cert_string);
- try {
- Base64.encodeToString( certCert.getEncoded(), Base64.DEFAULT);
- result = true;
- } catch (CertificateEncodingException e) {
- Log.d(TAG, e.getLocalizedMessage());
- }
- }
+ private boolean validCertificate(String cert_string) {
+ boolean result = false;
+ if(!ConfigHelper.checkErroneousDownload(cert_string)) {
+ X509Certificate certificate = ConfigHelper.parseX509CertificateFromString(cert_string);
+ try {
+ JSONObject provider_json = new JSONObject(getSharedPreferences(Dashboard.SHARED_PREFERENCES, MODE_PRIVATE).getString(Provider.KEY, ""));
+ String fingerprint = provider_json.getString(Provider.CA_CERT_FINGERPRINT);
+ String encoding = fingerprint.split(":")[0];
+ String expected_fingerprint = fingerprint.split(":")[1];
+ String real_fingerprint = base64toHex(Base64.encodeToString(
+ MessageDigest.getInstance(encoding).digest(certificate.getEncoded()),
+ Base64.DEFAULT));
+
+ result = real_fingerprint.trim().equalsIgnoreCase(expected_fingerprint.trim());
+ } catch (JSONException e) {
+ result = false;
+ } catch (NoSuchAlgorithmException e) {
+ result = false;
+ } catch (CertificateEncodingException e) {
+ result = false;
+ }
+ }
- return result;
+ return result;
+ }
+
+ private String base64toHex(String base64_input) {
+ byte[] byteArray = Base64.decode(base64_input, Base64.DEFAULT);
+ int readBytes = byteArray.length;
+ StringBuffer hexData = new StringBuffer();
+ int onebyte;
+ for (int i=0; i < readBytes; i++) {
+ onebyte = ((0x000000ff & byteArray[i]) | 0xffffff00);
+ hexData.append(Integer.toHexString(onebyte).substring(6));
}
-
+ return hexData.toString();
+ }
private Bundle getAndSetProviderJson(String provider_main_url, boolean danger_on) {
Bundle result = new Bundle();