From dcf5d150a618b6b9b78b42d38943fca47cdc461b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A1s=20Veres-Szentkir=C3=A1lyi?= <vsza@vsza.hu>
Date: Mon, 4 Apr 2011 16:47:56 +0200
Subject: [PATCH] Added SHA-1 checksum to acceptKeyDialog

---
 .../setup/AccountSetupCheckSettings.java      | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/src/com/fsck/k9/activity/setup/AccountSetupCheckSettings.java b/src/com/fsck/k9/activity/setup/AccountSetupCheckSettings.java
index facae58e2..2aaac3fd5 100644
--- a/src/com/fsck/k9/activity/setup/AccountSetupCheckSettings.java
+++ b/src/com/fsck/k9/activity/setup/AccountSetupCheckSettings.java
@@ -23,9 +23,13 @@ import com.fsck.k9.mail.Store;
 import com.fsck.k9.mail.Transport;
 import com.fsck.k9.mail.store.TrustManagerFactory;
 import com.fsck.k9.mail.store.WebDavStore;
+import com.fsck.k9.mail.filter.Hex;
 
 import java.security.cert.CertificateException;
+import java.security.cert.CertificateEncodingException;
 import java.security.cert.X509Certificate;
+import java.security.NoSuchAlgorithmException;
+import java.security.MessageDigest;
 
 /**
  * Checks the given settings to make sure that they can be used to send and
@@ -237,11 +241,26 @@ public class AccountSetupCheckSettings extends K9Activity implements OnClickList
 
                 mProgressBar.setIndeterminate(false);
                 StringBuffer chainInfo = new StringBuffer(100);
+                MessageDigest sha1 = null;
+                try {
+                    sha1 = MessageDigest.getInstance("SHA-1");
+                } catch (NoSuchAlgorithmException e) {
+                    Log.e(K9.LOG_TAG, "Error while initializing MessageDigest", e);
+                }
                 for (int i = 0; i < chain.length; i++) {
                     // display certificate chain information
                     chainInfo.append("Certificate chain[" + i + "]:\n");
                     chainInfo.append("Subject: " + chain[i].getSubjectDN().toString() + "\n");
                     chainInfo.append("Issuer: " + chain[i].getIssuerDN().toString() + "\n");
+                    if (sha1 != null) {
+                        sha1.reset();
+                        try {
+                            char[] sha1sum = Hex.encodeHex(sha1.digest(chain[i].getEncoded()));
+                            chainInfo.append("Fingerprint (SHA-1): " + new String(sha1sum) + "\n");
+                        } catch (CertificateEncodingException e) {
+                            Log.e(K9.LOG_TAG, "Error while encoding certificate", e);
+                        }
+                    }
                 }
 
                 new AlertDialog.Builder(AccountSetupCheckSettings.this)