RSA

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wikipedia:RSA (cryptosystem)

macOS 10.15 requires that TLS server certificates and issuing CAs using RSA keys must use key sizes greater than or equal to 2048.

• OpenSSH 7.6
  • Refuse RSA keys <1024 bits in length and improve reporting for keys that do not meet this requirement.
• OpenSSH 4.2: September 1, 2005 https://www.openssh.com/txt/release-4.2
  • Increase the default size of new RSA/DSA keys generated by ssh-keygen from 1024 to 2048 bits.

Related terms

• openssl
  • openssl rsautl
  • openssl genrsa
  • openssl rsa
• ssh-keygen -t rsa
• RSA Conference

Activities

• Cisco: Configure public RSA key authentication
• Cisco: crypto key generate rsa

See also

• CSR, Create a certificate: openssl req
• Public-key cryptography: RSA, DSA, ECDSA, EdDSA (Ed25519), AES, RSA Conference, hash, pkeyutl, Signature, key length, Easyrsa, OAEP, Ron Rivest, Adi Shamir, Leonard Adleman
• TLS, mTLS: OpenSSL, LibreSSL, BoringSSL, WolfSSL, X.509, .pem, SNI, CT, OCSP, Mbed TLS, ALPN, your connection is not private, SSL Certificate Checker, Wildcard certificate, JA3 fingerprint, sslcan, TLS inspection
• Cypher: Hash, MD5, SHA, Bcrypt, Blowfish, HMAC, Equihash, Argon2

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