IPsec uses an asymmetric encryption algorithm to encrypt the symmetric algorithm key, which it uses to encrypt/decrypt data, ensuring security and performance.
In IPsec, a symmetric encryption algorithm (e.g., AES) is used for encrypting data due to its speed. To securely exchange the symmetric key between peers, asymmetric encryption algorithms (like RSA) are used.
This method ensures:
High performance (due to fast symmetric encryption)
“IPsec uses symmetric algorithms to encrypt data for performance and asymmetric algorithms to securely exchange symmetric keys during IKE negotiation.”
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