Repository: randombit/botan (cpp)

Issue:
Deprecation notice for roughtime.cloudflare.com:2002
The Cloudflare Roughtime server at roughtime.cloudflare.com:2002 has been deprecated and will be turned off on July 1, 2024. You may wish to update your client to use our new server to avoid a disruption of service:

```
{
    "name": "Cloudflare-Roughtime-2",
    "publicKeyType": "ed25519",
    "publicKey": "0GD7c3yP8xEc4Zl2zeuN2SlLvDVVocjsPSL8/Rl/7zg=",
    "addresses": [
        {
            "protocol": "udp",
            "address": "roughtime.cloudflare.com:2003"
        }
    ]
}
```

See https://groups.google.com/a/chromium.org/g/proto-roughtime/c/vbmjoudG184 for further details.


Pull request description:
Update roughtime.cloudflare.com public key and port
Fixes #3937. Note that the old Cloudflare public key is still present in test vectors in the codebase in two locations, but this isn't problematic as they don't require the server to be online:
* https://github.com/randombit/botan/blob/afd43c536ff96e85d45837caa6f99125483c160a/src/tests/data/roughtime/roughtime_response.vec#L50
* https://github.com/randombit/botan/blob/afd43c536ff96e85d45837caa6f99125483c160a/src/tests/test_roughtime.cpp#L144

Patch:
diff --git a/src/cli/roughtime.cpp b/src/cli/roughtime.cpp
index 2111a5878..20102b159 100644
--- a/src/cli/roughtime.cpp
+++ b/src/cli/roughtime.cpp
@@ -65,7 +65,7 @@ class Roughtime final : public Command {
       <name> <key type> <base 64 encoded public key> <protocol> <host:port>
 
    Example servers:
-      Cloudflare-Roughtime ed25519 gD63hSj3ScS+wuOeGrubXlq35N1c5Lby/S+T7MNTjxo= udp roughtime.cloudflare.com:2002
+      Cloudflare-Roughtime ed25519 0GD7c3yP8xEc4Zl2zeuN2SlLvDVVocjsPSL8/Rl/7zg= udp roughtime.cloudflare.com:2003
       Google-Sandbox-Roughtime ed25519 etPaaIxcBMY1oUeGpwvPMCJMwlRVNxv51KK/tktoJTQ= udp roughtime.sandbox.google.com:2002
 
 --chain-file=<filename>


Test patch:
diff --git a/src/tests/test_roughtime.cpp b/src/tests/test_roughtime.cpp
index 9d485bb02..ad25dbe61 100644
--- a/src/tests/test_roughtime.cpp
+++ b/src/tests/test_roughtime.cpp
@@ -185,7 +185,7 @@ class Roughtime final : public Test {
 
          const auto servers = Botan::Roughtime::servers_from_str(
             "Chainpoint-Roughtime ed25519 bbT+RPS7zKX6w71ssPibzmwWqU9ffRV5oj2OresSmhE= udp roughtime.chainpoint.org:2002\n"
-            "Cloudflare-Roughtime ed25519 gD63hSj3ScS+wuOeGrubXlq35N1c5Lby/S+T7MNTjxo= udp roughtime.cloudflare.com:2002\n"
+            "Cloudflare-Roughtime ed25519 0GD7c3yP8xEc4Zl2zeuN2SlLvDVVocjsPSL8/Rl/7zg= udp roughtime.cloudflare.com:2003\n"
             "Google-Sandbox-Roughtime ed25519 etPaaIxcBMY1oUeGpwvPMCJMwlRVNxv51KK/tktoJTQ= udp roughtime.sandbox.google.com:2002\n"
             "int08h-Roughtime ed25519 AW5uAoTSTDfG5NfY1bTh08GUnOqlRb+HVhbJ3ODJvsE= udp roughtime.int08h.com:2002\n"
             "ticktock ed25519 cj8GsiNlRkqiDElAeNMSBBMwrAl15hYPgX50+GWX/lA= udp ticktock.mixmin.net:5333\n");
@@ -234,7 +234,7 @@ class Roughtime final : public Test {
          Botan::Roughtime::Nonce nonce(rng);
          try {
             const auto response_raw =
-               Botan::Roughtime::online_request("roughtime.cloudflare.com:2002", nonce, std::chrono::seconds(5));
+               Botan::Roughtime::online_request("roughtime.cloudflare.com:2003", nonce, std::chrono::seconds(5));
             const auto now = std::chrono::system_clock::now();
             const auto response = Botan::Roughtime::Response::from_bits(response_raw, nonce);
             std::chrono::milliseconds local_clock_max_error(1000);