Try
openssl speed rsa
Private key (large exponent) operations are 1-2 orders of magnitude
slower than public key (small exponent), easily observed. Depending on
key length and traffic volume this can be very important.
--David
Annie Yousar via RT wrote:
Small exponents give the advantage of faster signature verification, but
in fact you can't really observe that.
A prime exponent e theoretically speeds up the prime factor search,
remember that e must be coprime with (p-1) and (q-1), which is more
likely if e is prime. But this is in the GHz Century also not very
important.
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