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CHANGELOG.md

CHANGELOG.md 62 KB
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CERTIFICATE-TRANSPARENCY-GO Changelog

HEAD

v1.1.8

  • Recommended Go version for development: 1.21
    • Using a different version can lead to presubmits failing due to unexpected diffs.

Add support for AIX

Monitoring

Fixes

Misc

Dependency update

v1.1.7

  • Recommended Go version for development: 1.20

    • This is the version used by the Cloud Build presubmits. Using a different version can lead to presubmits failing due to unexpected diffs.

  • Bump golangci-lint from 1.51.1 to 1.55.1 (developers should update to this version).

Add support for WASI port

Add support for IBM Z operating system z/OS

Log List

Documentation

Misc

Dependency update

v1.1.6

Dependency update

  • Bump Trillian to v1.5.2
  • Bump Prometheus to v0.43.1

v1.1.5

Public/Private Key Consistency

  • #1044: If a public key has been configured for a log, check that it is consistent with the private key.
  • #1046: Ensure that no two logs in the CTFE configuration use the same private key.

Cleanup

  • Remove v2 log list package files.

Misc

  • Updated golangci-lint to v1.51.1 (developers should update to this version).
  • Bump Go version from 1.17 to 1.19.

v1.1.4

Published 2022-10-21

Cleanup

  • Remove log list v1 package and its dependencies.

Migrillian

  • #960: Skip consistency check when root is size zero.

Misc

  • Update Trillian to 0a389c4
  • Migrate loglist dependency from v1 to v3 in ctclient cmd.
  • Migrate loglist dependency from v1 to v3 in ctutil/loginfo.go
  • Migrate loglist dependency from v1 to v3 in ctutil/sctscan.go
  • Migrate loglist dependency from v1 to v3 in trillian/integration/ct_hammer/main.go
  • Downgrade 429 errors to verbosity 2

v1.1.3

Published 2022-05-14

Integration

  • Breaking change to API for integration.HammerCTLog:
    • Added ctx as first argument, and terminate loop if it becomes cancelled

JSONClient

  • PostAndParseWithRetry now does backoff-and-retry upon receiving HTTP 429.

Cleanup

  • WithBalancerName is deprecated and removed, using the recommended way.
  • ctfe.PEMCertPool type has been moved to x509util.PEMCertPool to reduce dependencies (#903).

Misc

  • updated golangci-lint to v1.46.1 (developers should update to this version)
  • update google.golang.org/grpc to v1.46.0
  • ctclient tool now uses Cobra for better CLI experience (#901).
  • #800: Remove dependency from ratelimit.
  • #927: Add read-only mode to CTFE config.

v1.1.2

Published 2021-09-21

CTFE

  • Removed the -by_range flag.

Updated dependencies

  • Trillian from v1.3.11 to v1.4.0
  • protobuf to v2

v1.1.1

Published 2020-10-06

Tools

CT Hammer

Added a flag (--strict_sth_consistency_size) which when set to true enforces the current behaviour of only request consistency proofs between tree sizes for which the hammer has seen valid STHs. When setting this flag to false, if no two usable STHs are available the hammer will attempt to request a consistency proof between the latest STH it's seen and a random smaller (but > 0) tree size.

CTFE

Caching

The CTFE now includes a Cache-Control header in responses containing purely immutable data, e.g. those for get-entries and get-proof-by-hash. This allows clients and proxies to cache these responses for up to 24 hours.

EKU Filtering

:warning: It is not yet recommended to enable this option in a production CT Log!

CTFE now supports filtering logging submissions by leaf certificate EKU. This is enabled by adding an extKeyUsage list to a log's stanza in the config file.

The format is a list of strings corresponding to the supported golang x509 EKUs: |Config string | Extended Key Usage | |----------------------------|----------------------------------------| |Any | ExtKeyUsageAny | |ServerAuth | ExtKeyUsageServerAuth | |ClientAuth | ExtKeyUsageClientAuth | |CodeSigning | ExtKeyUsageCodeSigning | |EmailProtection | ExtKeyUsageEmailProtection | |IPSECEndSystem | ExtKeyUsageIPSECEndSystem | |IPSECTunnel | ExtKeyUsageIPSECTunnel | |IPSECUser | ExtKeyUsageIPSECUser | |TimeStamping | ExtKeyUsageTimeStamping | |OCSPSigning | ExtKeyUsageOCSPSigning | |MicrosoftServerGatedCrypto| ExtKeyUsageMicrosoftServerGatedCrypto | |NetscapeServerGatedCrypto | ExtKeyUsageNetscapeServerGatedCrypto |

When an extKeyUsage list is specified, the CT Log will reject logging submissions for leaf certificates that do not contain an EKU present in this list.

When enabled, EKU filtering is only performed at the leaf level (i.e. there is no 'nested' EKU filtering performed).

If no list is specified, or the list contains an Any entry, no EKU filtering will be performed.

GetEntries

Calls to get-entries which are at (or above) the maximum permitted number of entries whose start parameter does not fall on a multiple of the maximum permitted number of entries, will have their responses truncated such that subsequent requests will align with this boundary. This is intended to coerce callers of get-entries into all using the same start and end parameters and thereby increase the cacheability of these requests.

e.g.:

Old behaviour:
             1         2         3
             0         0         0
Entries>-----|---------|---------|----...
Client A -------|---------|----------|...
Client B --|--------|---------|-------...
           ^        ^         ^
           `--------`---------`---- requests

With coercion (max batch = 10 entries):
             1         2         3
             0         0         0
Entries>-----|---------|---------|----...
Client A ----X---------|---------|...
Client B --|-X---------|---------|-------...
             ^
             `-- Requests truncated

This behaviour can be disabled by setting the --align_getentries flag to false.

Flags

The ct_server binary changed the default of these flags:

  • by_range - Now defaults to true

The ct_server binary added the following flags:

  • align_getentries - See GetEntries section above for details

Added backend flag to migrillian, which now replaces the deprecated "backend" feature of Migrillian configs.

FixedBackendResolver Replaced

This was previously used in situations where a comma separated list of backends was provided in the rpcBackend flag rather than a single value.

It has been replaced by equivalent functionality using a newer gRPC API. However this support was only intended for use in integration tests. In production we recommend the use of etcd or a gRPC load balancer.

LogList

Log list tools updated to use the correct v2 URL (from v2_beta previously).

Libraries

x509 fork

Merged upstream Go 1.13 and Go 1.14 changes (with the exception of https://github.com/golang/go/commit/14521198679e, to allow old certs using a malformed root still to be logged).

asn1 fork

Merged upstream Go 1.14 changes.

ctutil

Added VerifySCTWithVerifier() to verify SCTs using a given ct.SignatureVerifier.

Configuration Files

Configuration files that previously had to be text-encoded Protobuf messages can now alternatively be binary-encoded instead.

JSONClient

  • PostAndParseWithRetry error logging now includes log URI in messages.

Minimal Gossip Example

All the code for this, except for the x509ext package, has been moved over to the trillian-examples repository.

This keeps the code together and removes a circular dependency between the two repositories. The package layout and structure remains the same so updating should just mean changing any relevant import paths.

Dependencies

A circular dependency on the monologue repository has been removed.

A circular dependency on the trillian-examples repository has been removed.

The version of trillian in use has been updated to 1.3.11. This has required various other dependency updates including gRPC and protobuf. This code now uses the v2 proto API. The Travis tests now expect the 3.11.4 version of protoc.

The version of etcd in use has been switched to the one from go.etcd.io.

Most of the above changes are to align versions more closely with the ones used in the trillian repository.

v1.1.0

Published 2019-11-14 15:00:00 +0000 UTC

CTFE

The reject_expired and reject_unexpired configuration fields for the CTFE have been changed so that their behaviour reflects their name:

  • reject_expired only rejects expired certificates (i.e. it now allows not-yet-valid certificates).
  • reject_unexpired only allows expired certificates (i.e. it now rejects not-yet-valid certificates).

A reject_extensions configuration field for the CTFE was added, this allows submissions to be rejected if they contain an extension with any of the specified OIDs.

A frozen_sth configuration field for the CTFE was added. This STH will be served permanently. It must be signed by the log's private key.

A /healthz URL has been added which responds with HTTP 200 OK and the string "ok" when the server is up.

Flags

The ct_server binary has these new flags:

  • mask_internal_errors - Removes error strings from HTTP 500 responses (Internal Server Error)

Removed default values for --metrics_endpoint and --log_rpc_server flags. This makes it easier to get the documented "unset" behaviour.

Metrics

The CTFE exports these new metrics:

  • is_mirror - set to 1 for mirror logs (copies of logs hosted elsewhere)
  • frozen_sth_timestamp - time of the frozen Signed Tree Head in milliseconds since the epoch

Kubernetes

Updated prometheus-to-sd to v0.5.2.

A dedicated node pool is no longer required by the Kubernetes manifests.

Log Lists

A new package has been created for parsing, searching and creating JSON log lists compatible with the v2 schema: github.com/google/certificate-transparency-go/loglist2.

Docker Images

Our Docker images have been updated to use Go 1.11 and Distroless base images.

The CTFE Docker image now sets ENTRYPOINT.

Utilities / Libraries

jsonclient

The jsonclient package now copes with empty HTTP responses. The user-agent header it sends can now be specified.

x509 and asn1 forks

Merged upstream changes from Go 1.12 into the asn1 and x509 packages.

Added a "lax" tag to asn1 that applies recursively and makes some checks more relaxed:

  • parsePrintableString() copes with invalid PrintableString contents, e.g. use of tagPrintableString when the string data is really ISO8859-1.
  • checkInteger() allows integers that are not minimally encoded (and so are not correct DER).
  • OIDs are allowed to be empty.

The following x509 functions will now return x509.NonFatalErrors if ASN.1 parsing fails in strict mode but succeeds in lax mode. Previously, they only attempted strict mode parsing.

  • x509.ParseTBSCertificate()
  • x509.ParseCertificate()
  • x509.ParseCertificates()

The x509 package will now treat a negative RSA modulus as a non-fatal error.

The x509 package now supports RSASES-OAEP and Ed25519 keys.

ctclient

The ctclient tool now defaults to using all_logs_list.json instead of log_list.json. This can be overridden using the --log_list flag.

It can now perform inclusion checks on pre-certificates.

It has these new commands:

  • bisect - Finds a log entry given a timestamp.

It has these new flags:

  • --chain - Displays the entire certificate chain
  • --dns_server - The DNS server to direct queries to (system resolver by default)
  • --skip_https_verify - Skips verification of the HTTPS connection
  • --timestamp - Timestamp to use for bisect and inclusion commands (for inclusion, only if --leaf_hash is not used)

It now accepts hex or base64-encoded strings for the --tree_hash, --prev_hash and --leaf_hash flags.

certcheck

The certcheck tool has these new flags:

  • --check_time - Check current validity of certificate (replaces --timecheck)
  • --check_name - Check validity of certificate name
  • --check_eku - Check validity of EKU nesting
  • --check_path_len - Check validity of path length constraint
  • --check_name_constraint - Check name constraints
  • --check_unknown_critical_exts - Check for unknown critical extensions (replaces --ignore_unknown_critical_exts)
  • --strict - Set non-zero exit code for non-fatal errors in parsing

sctcheck

The sctcheck tool has these new flags:

  • --check_inclusion - Checks that the SCT was honoured (i.e. the corresponding certificate was included in the issuing CT log)

ct_hammer

The ct_hammer tool has these new flags:

  • --duplicate_chance - Allows setting the probability of the hammer sending a duplicate submission.

v1.0.21 - CTFE Logging / Path Options. Mirroring. RPKI. Non Fatal X.509 error improvements

Published 2018-08-20 10:11:04 +0000 UTC

CTFE

CTFE no longer prints certificate chains as long byte strings in messages when handler errors occur. This was obscuring the reason for the failure and wasn't particularly useful.

CTFE now has a global log URL path prefix flag and a configuration proto for a log specific path. The latter should help for various migration strategies if existing C++ server logs are going to be converted to run on the new code.

Mirroring

More progress has been made on log mirroring. We believe that it's now at the point where testing can begin.

Utilities / Libraries

The certcheck and ct_hammer utilities have received more enhancements.

x509 and x509util now support Subject Information Access and additional extensions for RPKI / RFC 3779.

scanner / fixchain and some other command line utilities now have better handling of non-fatal errors.

Commit 3629d6846518309d22c16fee15d1007262a459d2 Download zip

v1.0.20 - Minimal Gossip / Go 1.11 Fix / Utility Improvements

Published 2018-07-05 09:21:34 +0000 UTC

Enhancements have been made to various utilities including scanner, sctcheck, loglist and x509util.

The allow_verification_with_non_compliant_keys flag has been removed from signatures.go.

An implementation of Gossip has been added. See the gossip/minimal package for more information.

An X.509 compatibility issue for Go 1.11 has been fixed. This should be backwards compatible with 1.10.

Commit 37a384cd035e722ea46e55029093e26687138edf Download zip

v1.0.19 - CTFE User Quota

Published 2018-06-01 13:51:52 +0000 UTC

CTFE now supports Trillian Log's explicit quota API; quota can be requested based on the remote user's IP, as well as per-issuing certificate in submitted chains.

Commit 8736a411b4ff214ea20687e46c2b67d66ebd83fc Download zip

v1.0.18 - Adding Migration Tool / Client Additions / K8 Config

Published 2018-06-01 14:28:20 +0000 UTC

Work on a log migration tool (Migrillian) is in progress. This is not yet ready for production use but will provide features for mirroring and migrating logs.

The RequestLog API allows for logging of SCTs when they are issued by CTFE.

The CT Go client now supports GetEntryAndProof. Utilities have been switched over to use the glog package.

Commit 77abf2dac5410a62c04ac1c662c6d0fa54afc2dc Download zip

v1.0.17 - Merkle verification / Tracing / Demo script / CORS

Published 2018-06-01 14:25:16 +0000 UTC

Now uses Merkle Tree verification from Trillian.

The CT server now supports CORS.

Request tracing added using OpenCensus. For GCE / K8 it just requires the flag to be enabled to export traces to Stackdriver. Other environments may differ.

A demo script was added that goes through setting up a simple deployment suitable for development / demo purposes. This may be useful for those new to the project.

Commit 3c3d22ce946447d047a03228ebb4a41e3e4eb15b Download zip

v1.0.16 - Lifecycle test / Go 1.10.1

Published 2018-06-01 14:22:23 +0000 UTC

An integration test was added that goes through a create / drain queue / freeze lifecycle for a log.

Changes to x509 were merged from Go 1.10.1.

Commit a72423d09b410b80673fd1135ba1022d04bac6cd Download zip

v1.0.15 - More control of verification, grpclb, stackdriver metrics

Published 2018-06-01 14:20:32 +0000 UTC

Facilities were added to the x509 package to control whether verification checks are applied.

Log server requests are now balanced using gRPClb.

For Kubernetes, metrics can be published to Stackdriver monitoring.

Commit 684d6eee6092774e54d301ccad0ed61bc8d010c1 Download zip

v1.0.14 - SQLite Removed, LeafHashForLeaf

Published 2018-06-01 14:15:37 +0000 UTC

Support for SQLite was removed. This motivation was ongoing test flakiness caused by multi-user access. This database may work for an embedded scenario but is not suitable for use in a server environment.

A LeafHashForLeaf client API was added and is now used by the CT client and integration tests.

Commit 698cd6a661196db4b2e71437422178ffe8705006 Download zip

v1.0.13 - Crypto changes, util updates, sync with trillian repo, loglist verification

Published 2018-06-01 14:15:21 +0000 UTC

Some of our custom crypto package that were wrapping calls to the standard package have been removed and the base features used directly.

Updates were made to GCE ingress and health checks.

The log list utility can verify signatures.

Commit 480c3654a70c5383b9543ec784203030aedbd3a5 Download zip

v1.0.12 - Client / util updates & CTFE fixes

Published 2018-06-01 14:13:42 +0000 UTC

The CT client can now use a JSON loglist to find logs.

CTFE had a fix applied for preissued precerts.

A DNS client was added and CT client was extended to support DNS retrieval.

Commit 74c06c95e0b304a050a1c33764c8a01d653a16e3 Download zip

v1.0.11 - Kubernetes CI / Integration fixes

Published 2018-06-01 14:12:18 +0000 UTC

Updates to Kubernetes configs, mostly related to running a CI instance.

Commit 0856acca7e0ab7f082ae83a1fbb5d21160962efc Download zip

v1.0.10 - More scanner, x509, utility and client fixes. CTFE updates

Published 2018-06-01 14:09:47 +0000 UTC

The CT client was using the wrong protobuffer library package. To guard against this in future a check has been added to our lint config.

The x509 and asn1 packages have had upstream fixes applied from Go 1.10rc1.

Commit 1bec4527572c443752ad4f2830bef88be0533236 Download zip

v1.0.9 - Scanner, x509, utility and client fixes

Published 2018-06-01 14:11:13 +0000 UTC

The scanner utility now displays throughput stats.

Build instructions and README files were updated.

The certcheck utility can be told to ignore unknown critical X.509 extensions.

Commit c06833528d04a94eed0c775104d1107bab9ae17c Download zip

v1.0.8 - Client fixes, align with trillian repo

Published 2018-06-01 14:06:44 +0000 UTC

Commit e8b02c60f294b503dbb67de0868143f5d4935e56 Download zip

v1.0.7 - CTFE fixes

Published 2018-06-01 14:06:13 +0000 UTC

An issue was fixed with CTFE signature caching. In an unlikely set of circumstances this could lead to log mis-operation. While the chances of this are small, we recommend that versions prior to this one are not deployed.

Commit 52c0590bd3b4b80c5497005b0f47e10557425eeb Download zip

v1.0.6 - crlcheck improvements / other fixes

Published 2018-06-01 14:04:22 +0000 UTC

The crlcheck utility has had several fixes and enhancements. Additionally the hammer now supports temporal logs.

Commit 3955e4a00c42e83ff17ce25003976159c5d0f0f9 Download zip

v1.0.5 - X509 and asn1 fixes

Published 2018-06-01 14:02:58 +0000 UTC

This release is mostly fixes to the x509 and asn1 packages. Some command line utilities were also updated.

Commit ae40d07cce12f1227c6e658e61c9dddb7646f97b Download zip

v1.0.4 - Multi log backend configs

Published 2018-06-01 14:02:07 +0000 UTC

Support was added to allow CTFE to use multiple backends, each serving a distinct set of logs. It allows for e.g. regional backend deployment with common frontend servers.

Commit 62023ed90b41fa40854957b5dec7d9d73594723f Download zip

v1.0.3 - Hammer updates, use standard context

Published 2018-06-01 14:01:11 +0000 UTC

After the Go 1.9 migration references to anything other than the standard context package have been removed. This is the only one that should be used from now on.

Commit b28beed8b9aceacc705e0ff4a11d435a310e3d97 Download zip

v1.0.2 - Go 1.9

Published 2018-06-01 14:00:00 +0000 UTC

Go 1.9 is now required to build the code.

Commit 3aed33d672ee43f04b1e8a00b25ca3e2e2e74309 Download zip

v1.0.1 - Hammer and client improvements

Published 2018-06-01 13:59:29 +0000 UTC

Commit c28796cc21776667fb05d6300e32d9517be96515 Download zip

v1.0 - First Trillian CT Release

Published 2018-06-01 13:59:00 +0000 UTC

This is the point that corresponds to the 1.0 release in the trillian repo.

Commit abb79e468b6f3bbd48d1ab0c9e68febf80d52c4d Download zip