The RSA Key Generator is a cryptographic utility that generates pairs of public and private keys using the RSA algorithm, a foundational component of modern asymmetric encryption. These keys are essential for secure communication, digital signatures, and encryption of sensitive data, allowing one key to encrypt messages while the other decrypts them.
Users can specify key sizes (commonly 2048 or 4096 bits) to balance security and performance. The tool produces a public key, which can be shared openly, and a private key, which must be kept confidential. These keys are mathematically linked such that data encrypted with the public key can only be decrypted with the corresponding private key.
For example, generating a 2048-bit key pair might yield a public key in PEM format for use in secure email communication and a private key stored safely for decryption. This process ensures confidentiality, authenticity, and integrity of information exchanged over insecure channels.