Without OAEP in RSA encryption, it takes less work for an attacker to decrypt the data or infer patterns from the ciphertext. This rule logs an issue as soon as a literal value starts with RSA/NONE.

Noncompliant Code Example

Cipher rsa = javax.crypto.Cipher.getInstance("RSA/NONE/NoPadding");

Compliant Solution

Cipher rsa = javax.crypto.Cipher.getInstance("RSA/ECB/OAEPWITHSHA-256ANDMGF1PADDING");

See

Deprecated

This rule is deprecated; use {rule:java:S5542} instead.