Differences

This shows you the differences between two versions of the page.

--- blug-canary-2 [2019/11/21 16:06]
persmule
+++ blug-canary-2 [2020/09/17 15:46]
persmule
@@ Line 1: / Line 1: @@
-====== Beijing GNU/Linux User Group Canary (2/3) ======
-<code>
 -----BEGIN PGP SIGNED MESSAGE-----
 Hash: SHA512
@@ Line 8: / Line 5: @@
 ====================================
-Issued for November 2019.
+Issued for September 2020.
 Don't just trust the contents of this file blindly! Verify the
@@ Line 18: / Line 15: @@
 * biergaizi: 0x255211B2395A5A3E0E48A0F1FAD3EB05E88E8D6D
 * persmule : 0xEDFFE248ECFACDE3C805906804A40D21DBB89B60
-* wnereiz  : 0x0A6A91990AC98712274AA18DFDFF2E13AA25BE72
+* vimacs   : 0x7079B481F04B5D8B65A0ECDEEA2DB82FE04A9403
 THREE DOCUMENTS IN TOTAL.
@@ Line 63: / Line 60: @@
 . We plan to publish the next of these canary statements in the first three
-weeks of December 2019. Special note should be taken if no new canary is published
+weeks of October 2020. Special note should be taken if no new canary is published
 by that time or if the list of statements changes without plausible explanation.
@@ Line 69: / Line 66: @@
 ~~~~~~~~~~~~~~~~~~~~~~~~
-. Since mid-October, persmule's old signing key 0x2987A25DAC8454A5 has
+. Due to personal reasons, wnereiz (0xFDFF2E13AA25BE72) voluntarily decided
-expired. A new key, 0xEDFFE248ECFACDE3C805906804A40D21DBB89B60, has been
+to quit from the warrant canary team and he is no longer a signer of the
-created and uploaded to https://keys.openpgp.org/, it can be obtained from
+warrant canary documents since April 15th, 2020. All statements from the
-this keyserver.
+warrant canary documents before this date are still valid. This is an official
+decision that can be verified by checking the warrant canary document in April,
+signed by wneriez.
+. In the previously mentioned document designed by wneriez in April 2020,
+the date in its statements was mistakenly written as "April 15th, 2019",
+which was a typo, but cannot be changed due to the nature of digital signature.
+We declare that it's hereby corrected to "April 15th, 2020".
+. A new member, vimacs (0xEA2DB82FE04A9403) has became a new signer since this
+month. You can validate the new keys by cross-checking the other two copies of
+this document, signed by biergaizi and persmule.
+. Due to the ongoing security issues of OpenPGP keyservers, it makes signature
+verification an issue and somewhat a challenge. For completeness, complete
+procedures for canary verification has been added.
+Canary Verification Procedures
+~~~~~~~~~~~~~~~~~~~~~~~~
+. To verify biergaizi's signature...
+    a. Obtain the public key from any traditional OpenPGP Keyserver, such as
+    https://keyserver.ubuntu.com, and import the public key. The fingerprint
+    is 0x255211B2395A5A3E0E48A0F1FAD3EB05E88E8D6D.
+    b. Use the latest GnuPG in any operating system.
+. To verify persmule's signature...
+    a. Unfortunately, it's not possible yet. Recent attacks on OpenPGP key-
+    servers have raised great security concerns within the community, as a
+    countermeasure, persmule's new public key has been published to the
+    https://keys.openpgp.org/ keyserver, but without a User-ID. Currently,
+    it's impossible to import a OpenPGP public key without User-ID for a
+rd-party to verify the canary document signed by persmule.
+    b. We are looking for a solution. But for now, you should check the
+    canary documents signed by biergaizi and vimacs to decide the validity
+    of the canary documents. This effectively reduced the number of signers
+    to two people. It reduces the level of confidence, but currently there is
+    no alternative option yet.
+    c. Once the technical problem of using a public key without User-ID is
+    resolved, you can check the previous signatures retroactively, and this
+    would effectively restore the level of confidence. You can archive the
+    documents to your own machine as soon as it's published to ensure no data
+    tampering has occurred.
-. The new key will be used by persmule to sign future warrant canary
+. To verify vimacs' signature...
-documents. You can verify the signature by crosschecking the other two
-documents signed by biergaizi and wnereiz for consistency.
-. Due to this key rollover, the October message was not signed by persmule.
+    a. Due to the recent attacks on OpenPGP keyservers, vimacs has published
-This did/does not indicate a security incident, all of the statements above
+    the OpenPGP public key to https://keys.openpgp.org, again, without a User-
-were valid, and are still valid.
+    ID. But it's possible for a 3rd-party to verify the signatures by following
+    these steps.
-. Recent attacks on OpenPGP keyservers have raised great security concerns
+    b. Use Debian GNU/Linux operating system and install GnuPG. Other operating
-within the community, as a countermeasure, persmule's personal User-ID has
+    systems may lack the necessary out-of-tree GnuPG patches required, Debian
-not published to the https://keys.openpgp.org/ keyserver. Instead, only
+    must be used.
-cryptographic information can be obtained from the keyserver, without any
-User-ID. Currently, it's impossible to import a OpenPGP public key without
-User-ID to a standard GnuPG installation, as a result, it's not possible
-for a 3rd-party to verify the canary document signed by persmule.
-. We are looking for a solution. But for now, we decided that the best
+    c. Fetch vimacs' old public key from a traditional OpenPGP Keyserver, such
-option is starting publishing new canary documents using the new key.
+    as https://keyserver.ubuntu.com, and import the public key. The fingerprint
-As a temporary measure, you can check the canary documents signed by
+    is 0x7079B481F04B5D8B65A0ECDEEA2DB82FE04A9403. You should see an expired
-biergaizi and wnereiz to decide the validity of the Statements. By signing
+    public key.
-their own copies, it indicates that the new key has been verified privately
-by them as valid.
-. This effectively reduced the number of signers to two people. It reduces
+    d. Fetch vimacs' new public key from https://keys.openpgp.org, using the same
-the level of confidence, but currently there is no alternative option yet.
+    fingerprint, and import the public key. You should see that the public
+    key has been updated.
-. Once the technical problem of OpenPGP public key without User-ID is
+    e. Please note that the key is still shown as "expired" because the new key
-resolved, you can check the previous signatures retroactively, and this
+    has no UID associated. But you should be able to see a new, valid (not
-would effectively restore the level of confidence. You can archive
+    expired) subkey by...
-persmule's signature as soon as it's published to your own machine to
-ensure no data tampering has occured.
-. Unlike persmule, biergaizi and wnereiz's signing keys are unchanged,
+        $ gpg --list-options show-unusable-subkeys 	--list-keys 0x7079B481F04B5D8B65A0ECDEEA2DB82FE04A9403
-but the Key-IDs have been changed to its full fingerprint format in the
-canary document for clarity.
-. When new information is available, it will be published in the "Special
+    f. Now, it's possible to verify the signature by following the standard
-Announcements" section in future warrant canary documents.
+    procedures. Ignore the "key expired" warning (because the latest UID is
+    not published, only the expired UIDs are available).
 Proof of Freshness
@@ Line 117: / Line 152: @@
 $ rsstail -1 -n5 -N -u https://www.telegraph.co.uk/news/rss.xml
- 'Designer babies' may not be as smart or tall as parents expect, study warns
+ Are we heading for a second lockdown, and what are the new UK rules?
- Cambridge University students cry fowl over 17th century painting that upsets vegetarians
+ Belarus protest leader Maria Kolesnikova charged with incitement to undermine national security
- Indian businessman wore pilot disguise to get upgrades and special treatment
+ North East local lockdown rules announced - and the current restrictions across UK
- Russia 'ruined' Ukrainian naval vessels before handing them back, says Ukrainian navy
+ Donald Trump vs Joe Biden: How do the Republican and Democratic policies compare in the US election race?
- Killer of Helen McCourt to be released despite refusing to reveal location of her body
+ US election debates schedule: When will Donald Trump and Joe Biden go head-to-head in 2020?
 $ rsstail -1 -n5 -N -u https://rss.nytimes.com/services/xml/rss/nyt/World.xml
- At Odds With Labour, Britains Jews Are Feeling Politically Homeless
+ Aleksei Navalny, Putin Critic, Was Poisoned at Hotel, His Team Says
- Prince Andrews Friendship With Epstein Joins a List of Royal Scandals
+ Keith Krach, U.S. Official, Visits Taiwan Amid Rising Tensions With China
- Afghanistans Curse: A Bomb From 2 Wars Ago Crushes a Family Today
+ On This Island, Everyone Knows Your Name (if You Have Covid-19)
- Arab Thinkers Call to Abandon Boycotts and Engage With Israel
+ Why Politicians in France Cant Stop Talking About Crime
- Rodrigo Duterte Calls for Ban on Public Vaping in the Philippines
+ Covid-19 News: Live Updates
 $ date -R -u
-Thu, 21 Nov 2019 16:03:28 +0000
+Thu, 17 Sep 2020 15:31:59 +0000
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+ttJm3pzn9ZPhnp/weNH2Z4bgKCAugA==
-=yM0h
+=oufT
 -----END PGP SIGNATURE-----
-</code>

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