Here is a comment written in the vars configuration file for easy-rsa 2.2.2: # Increase this to 2048 if you # are paranoid. Previous versions of easy-rsa used 1024 bit as default.
The symmetric keys perform the bulk of the work, while RSA creates a strong and secure channel. RSA is a slow algorithm and because of this, it is used to encrypt and decrypt the symmetric keys which in turn, encrypt and decrypt the communications.
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