About this Tool
RSA (Rivest-Shamir-Adleman) is an asymmetric cryptographic algorithm that uses a pair of keys: a public key for encryption and a private key for decryption. RSA is fundamental to modern internet security, used in HTTPS, SSH, digital signatures, and secure email. This tool generates RSA key pairs in PEM format, compatible with OpenSSL and most cryptographic libraries. Key sizes of 2048 or 4096 bits are recommended for security.