API

RSA should use a long key

Docs > Code Analysis > Static Analysis Rules > RSA should use a long key

Metadata

ID: java-security/rsa-short-key

Language: Java

Severity: Warning

Category: Security

CWE: 326

Description

When using RSA, use keys with at least 2048 bits.

Learn More

CWE-326: Inadequate Encryption Strength

Arguments

min-length: Minimum length for an RSA key. Default: 2048.

Non-Compliant Code Examples

public class MyClass {

    public void test () {
        KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA");
        keyGen.initialize(512);
    }
}

Compliant Code Examples

public class MyClass {

    public void test () {
        KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA");
        keyGen.initialize(2048);
    }
}

How to use this rule

1
2
rulesets:
  - java-security     # Rules to enforce Java security.

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