This commit introduces several improvements to the RSA implementation:
- Preserves zero-value service safety by lazily initializing the RSA service in `pkg/crypt/crypt.go`.
- Enforces a minimum RSA key size of 2048 bits in `pkg/crypt/std/rsa/rsa.go` to prevent the generation of insecure keys.
- Exposes the OAEP label parameter in `Encrypt` and `Decrypt` functions, allowing for more advanced use cases.
- Adds a test case to verify that `GenerateKeyPair` correctly rejects key sizes below the new minimum.
This commit introduces a standard RSA implementation in `pkg/crypt/std/rsa`.
The new `rsa.Service` provides a clean API for RSA operations, including:
- Key pair generation
- Encryption and decryption of data
The implementation uses the standard `crypto/rsa` package and follows best practices, including OAEP padding. The main `crypt.Service` has been updated to integrate and expose this new functionality.
This work was done to validate the build environment, and the tests for this implementation pass successfully, confirming that the previous testing issues were isolated to the OpenPGP library.
