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What it is:
RSA key generation produces a public/private key pair. The security comes from the difficulty of reversing the underlying math (notably, factoring very large numbers). What you should understand (high level):
  • RSA starts from large prime numbers internally
  • It produces a public key and a private key that “fit together”
  • You can distribute the public key openly
  • The private key must remain secret
Try it (demo):
  1. Open the RSA key generator
  2. Generate a key pair
  3. Save the public key and private key outputs for the next steps
Link: https://diveshfx.github.io/online-tools/rsa/key-generator/ or https://tiny.cc/rsakeygenerator