One proposal would restrict Java APIs to maintain the strong encapsulation that assures the integrity of code and data, while a second would introduce a Key Encapsulation Mechanism API.

Note that this encryption algorithm is not very secure. Someone who knows you are using a Caesar Cipher encryption could easily break it by hand, since there are only 26 possibilities.

A mitigating factor is that Java versions 15 and above don’t appear to be as widely used as earlier versions. Data collected in February and March 2021 from security firm Snyk showed that Java ...

Java Card compliant cryptographic library for encryption and decryption of RSA, DSA, Diffie-Hellman, El-Gamal and Elliptic Curves algorithms. The Public Key Cryptographic Library (PKCL) provides ...

RSA and other encryption algorithms have been in use for decades with no known ways for them to be broken. Over the years, that track record has led to confidence that they are safe for use.