RSA doesn&#x27;t restrict key sizes to powers of 2, but powers of 2 are more optimised for implementation.<p><a href="http:&#x2F;&#x2F;crypto.stackexchange.com&#x2F;questions&#x2F;7849&#x2F;why-are-rsa-key-sizes-almost-always-a-power-of-two" rel="nofollow">http:&#x2F;&#x2F;crypto.stackexchange.com&#x2F;questions&#x2F;7849&#x2F;why-are-rsa-k...</a>