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Upgrade inadequate cryptographic key sizes

org.openrewrite.java.security.UpgradeInadequateKeySize

Rewrites cryptographic key-size literals that fall below current minimums. RSA/DSA/DH < 2048 bits are upgraded to 2048; EC < 224 bits are upgraded to 256 (when the algorithm is resolvable from `KeyPairGenerator.getInstance(...)`); symmetric (AES) < 128 bits to 128; weak named EC curves (e.g. `secp112r1`, `prime192v1`) to `secp256r1`. Companion fix recipe to `FindInadequateKeySize`. Note: changing key sizes can break interop with existing artifacts; review before applying.

Tags​

Recipe source​

This recipe is only available to users of Moderne.

This recipe is available under the Moderne Proprietary License.

Example​

Before​
import java.security.KeyPairGenerator;
import java.security.NoSuchAlgorithmException;

class A {
    void generateKey() throws NoSuchAlgorithmException {
        KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA");
        kpg.initialize(1024);
    }
}
After​
import java.security.KeyPairGenerator;
import java.security.NoSuchAlgorithmException;

class A {
    void generateKey() throws NoSuchAlgorithmException {
        KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA");
        kpg.initialize(2048);
    }
}

Usage​

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 UpgradeInadequateKeySize

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

mod config recipes jar install org.openrewrite.recipe:rewrite-java-security:3.33.1

See how this recipe works across multiple open-source repositories​

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Data Tables​

Source files that had results​

org.openrewrite.table.SourcesFileResults

Source files that were modified by the recipe run.

Column NameDescription
Source path before the runThe source path of the file before the run. null when a source file was created during the run.
Source path after the runA 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 changesIn 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 changesThe specific recipe that made a change.
Estimated time savingAn estimated effort that a developer to fix manually instead of using this recipe, in unit of seconds.
CycleThe recipe cycle in which the change was made.