An RSA key is a cryptographic key used in the RSA algorithm, one of the most widely adopted public-key cryptosystems. RSA keys come in pairs: a public key for encrypting data and a private key for decrypting it. The security of RSA relies on the computational difficulty of factoring large prime numbers, making it effective for securing digital communications, digital signatures, and data encryption. However, RSA keys are potentially vulnerable to quantum computer attacks, which could break their security by efficiently factoring large numbers. As a result, organizations are exploring quantum-resistant alternatives.