# RSA Namespace for RSA cryptographic types backed by OpenSSL. ``` enum RSA ``` ## Overview `RSA` groups the Swift types that represent RSA keys and, in future releases, signing and verification operations. The namespace is a caseless enum so it cannot be instantiated; all members are nested types or static functions. The currently shipping surface is PEM ingestion: [`RSA.PrivateKey`](/documentation/OpenSSL/RSA/PrivateKey) and [`RSA.PublicKey`](/documentation/OpenSSL/RSA/PublicKey) accept PEM-encoded key material (PKCS#1, RFC 8017 or PKCS#8, RFC 5958) and retain the original bytes for later use. These types exist primarily so consumers can pass typed values through their own APIs while the underlying provider integration is still in progress. > Warning: Signing (`RSA.PrivateKey`) and verification (`RSA.PublicKey`) > are **not yet functional**. They require the OpenSSL provider layer > (`OSSL_PROVIDER_load`, `EVP_PKEY_sign_init`), which is not wired up in > this package. See for the full list of > MVP gaps before depending on this in production. > SeeAlso: ``doc://OpenSSL/documentation/OpenSSL/RSA/PrivateKey``, ``doc://OpenSSL/documentation/OpenSSL/RSA/PublicKey``, ``doc://OpenSSL/documentation/OpenSSL/OpenSSLError``