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Find TLS key exchange (named groups) configuration

Recipe IDio.moderne.cryptography.pqc.FindTlsNamedGroupsConfiguration

Artifactio.moderne.recipe:rewrite-cryptography

Inventories every place a codebase decides which TLS key-exchange groups it offers, and classifies each by whether an ML-KEM hybrid group — the thing JEP 527 and BouncyCastle 1.81 add — is among them. Covers SSLParameters.setNamedGroups and BCSSLParameters.setNamedGroups, the jdk.tls.namedGroups system property set in code or embedded as a -D flag in checked-in YAML and .properties files, getSupportedGroups overrides on BouncyCastle AbstractTlsClient subclasses, BCJSSE provider registration, and jdk.tls.disabledAlgorithms values that disable a hybrid group. When the repository configures named groups nowhere, each TLS-using file gets one A row: that code is post-quantum ready as soon as it runs on JDK 27 or BouncyCastle 1.81, with no source change. -D flags in shell scripts, Dockerfiles and orchestration manifests outside the repository are invisible, so an absent row is not proof that no group pin exists.

Single recipeOpenRewriteModerne Proprietary License

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Options

2 parameters

2 optional

Parameter	Example	Type	Required
detectConfigKeyHeuristics	—	Boolean	Optional
Also flag ad-hoc .properties and YAML keys whose name looks like a named-groups setting, e.g. tls.named-groups. Off by default: neither the JDK nor Spring Boot has a first-class named-groups configuration key, so any such key is an application's own invention and matching on the name alone produces false positives. The -Djdk.tls.namedGroups= flag embedded in a JVM-options value is matched either way.
reportDefaultReliance	—	Boolean	Optional
Emit one A row per TLS-using source file when the repository configures named groups nowhere at all, anchored at the first TLS entry-point call in the file. This is the row that says "this code becomes post-quantum ready by upgrading the runtime, with no source change", which for most repositories is the whole answer. Set to false for a call-site-only inventory. Default true.

Examples

java

Parameter	Value
reportDefaultReliance	null
detectConfigKeyHeuristics	null

java

Before

import javax.net.ssl.SSLParameters;
import javax.net.ssl.SSLSocket;

class ExplicitGroups {
    void m(SSLSocket socket) {
        SSLParameters p = socket.getSSLParameters();
        p.setNamedGroups(new String[]{"x25519", "secp256r1"});
        socket.setSSLParameters(p);
    }
}

After

import javax.net.ssl.SSLParameters;
import javax.net.ssl.SSLSocket;

class ExplicitGroups {
    void m(SSLSocket socket) {
        SSLParameters p = socket.getSSLParameters();
        /*~~>*/p.setNamedGroups(new String[]{"x25519", "secp256r1"});
        socket.setSSLParameters(p);
    }
}

Diff

@@ -7,1 +7,1 @@
    void m(SSLSocket socket) {
        SSLParameters p = socket.getSSLParameters();
-       p.setNamedGroups(new String[]{"x25519", "secp256r1"});
+       /*~~>*/p.setNamedGroups(new String[]{"x25519", "secp256r1"});
        socket.setSSLParameters(p);

Usage

Run this recipe

This recipe has no required configuration options. Users of Moderne can run it via the Moderne CLI.

You will need to have configured the Moderne CLI on your machine before you can run the following command.

shell

mod run . --recipe FindTlsNamedGroupsConfiguration

If the recipe is not available locally, then you can install it using:

RELEASE resolves to the newest release and LATEST to the newest build of any kind, including snapshots. Either one lets mod config recipes upgrade pull in later versions without editing this command; a pinned version stays where you put it.

RELEASE

mod config recipes jar install io.moderne.recipe:rewrite-cryptography:RELEASE

LATEST

mod config recipes jar install io.moderne.recipe:rewrite-cryptography:LATEST

Pinned version

mod config recipes jar install io.moderne.recipe:rewrite-cryptography:0.14.12

Data tables

TLS named groups inventory

io.moderne.cryptography.pqc.table.TlsNamedGroupsInventoryTable

TLS key-exchange group configuration detected in Java sources, configuration files and checked-in JVM-options values, classified by whether an ML-KEM hybrid group is offered. -D flags in shell scripts, Dockerfiles and orchestration manifests outside the scanned repository are invisible, so an absent row is not evidence that no group pin exists.

Column	Description
Classification	A — no explicit named-groups configuration, so the runtime decides: PQC-capable on JDK 27+ (JEP 527) or BouncyCastle 1.81+, not before. B — explicit configuration naming no ML-KEM hybrid group, which pins the connection to classical key exchange regardless of the runtime. C — an ML-KEM hybrid group is already configured. B-indeterminate — a configuration surface is used but its value is not statically resolvable. never-PQC — a low-level BouncyCastle client relying on AbstractTlsClient defaults, which contain no ML-KEM group at any version, so a dependency upgrade alone will never enable PQC here. modifier — a jdk.tls.disabledAlgorithms value that disables a hybrid group, silently turning a C back into a B after an upgrade.
Configuration surface	The API or configuration key that produced the row: SSLParameters.setNamedGroups, BCSSLParameters.setNamedGroups, jdk.tls.namedGroups, jdk.tls.namedGroups JVM flag, BCJSSE provider registration, AbstractTlsClient.getSupportedGroups, AbstractTlsClient defaults, jdk.tls.disabledAlgorithms, or none (provider default) for an A row. The token vocabulary is shared with the hybrid key exchange enforcement table so discovery and transformation rows can be joined.
Protocol name	Always TLS: named-group configuration selects TLS key-exchange groups. Maps to AgileSec crypto.protocol.name.
Protocol kex algorithms	The TLS named groups — the key-exchange algorithms in AgileSec terms — named at the site, comma-joined in the order they are offered, e.g. x25519,secp256r1. BouncyCastle NamedGroup constants are recorded by their simple name. Empty when nothing is named or the value is not statically resolvable. For a modifier row this lists only the hybrid groups being disabled. Maps to AgileSec crypto.protocol.kex_algorithms.
Library name	The TLS stack the surface belongs to: JSSE or BouncyCastle. jdk.tls.namedGroups rows are recorded as JSSE even though BCJSSE honours the same property, because the property is a JDK-level surface.
Library language	The language of the source the row was found in: Java, Properties or YAML.
Code snippet	The source code of the detected API usage, e.g. Cipher.getInstance("DES").
File location	The path of the source file relative to the repository root.
Start line	1-based line of the start of the API usage.
Start column	0-based column of the start of the API usage, or -1 when unavailable.
Start offset	0-based character offset of the start of the API usage, or -1 when unavailable.
End line	1-based line of the end of the API usage.
End column	0-based column of the end of the API usage, or -1 when unavailable.
End offset	0-based character offset of the end of the API usage, or -1 when unavailable.
Repository name	The repository name from Git provenance, e.g. payment-service. Empty when unknown.
Scan source	Where the source was scanned from, derived from Git provenance, e.g. GitHub, GitLab, Local Repository.
Branch	The branch from Git provenance, e.g. main. Empty when unknown.

Source files that had results

org.openrewrite.table.SourcesFileResults

Source files that were modified by the recipe run.

Column	Description
Source path before the run	The source path of the file before the run. null when a source file was created during the run.
Source path after the run	A recipe may modify the source path. This is the path after the run. null when a source file was deleted during the run.
Parent of the recipe that made changes	In a hierarchical recipe, the parent of the recipe that made a change. Empty if this is the root of a hierarchy or if the recipe is not hierarchical at all.
Recipe that made changes	The specific recipe that made a change.
Estimated time saving	An estimated effort that a developer to fix manually instead of using this recipe, in unit of seconds.
Cycle	The recipe cycle in which the change was made.

Source files that had search results

org.openrewrite.table.SearchResults

Search results that were found during the recipe run.

Column	Description
Source path of search result before the run	The source path of the file with the search result markers present.
Source path of search result after run the run	A recipe may modify the source path. This is the path after the run. null when a source file was deleted during the run.
Result	The trimmed printed tree of the LST element that the marker is attached to.
Description	The content of the description of the marker.
Recipe that added the search marker	The specific recipe that added the Search marker.

Source files that errored on a recipe

org.openrewrite.table.SourcesFileErrors

The details of all errors produced by a recipe run.

Column	Description
Source path	The file that failed to parse.
Recipe that made changes	The specific recipe that made a change.
Stack trace	The stack trace of the failure.

Recipe performance

org.openrewrite.table.RecipeRunStats

Statistics used in analyzing the performance of recipes.

Column	Description
The recipe	The recipe whose stats are being measured both individually and cumulatively.
Source file count	The number of source files the recipe ran over.
Source file changed count	The number of source files which were changed in the recipe run. Includes files created, deleted, and edited.
Cumulative scanning time (ns)	The total time spent across the scanning phase of this recipe.
Max scanning time (ns)	The max time scanning any one source file.
Cumulative edit time (ns)	The total time spent across the editing phase of this recipe.
Max edit time (ns)	The max time editing any one source file.