Rare project developers

[Cristina Klippel Dominicini <>]

Hi Csaba!

Sorry for the delay. For some reason, I am not receiving all the threads from 
the rare list, and my mail server also blocked some messages. I will check 
the archives.

Interesting question! I am honored by your mention as a skilled 
mathematician, but I am more a computer engineering trying to understand and 
apply the math concepts to computing problems :-D But I have some very 
skilled mathematician friends that help me when I have some doubts. I will 
check with them if they have any insights about your question and get back to 
you soon :-)

Best regards,
Cristina

________________________________________
De:  <> em 
nome de mc36 <>
Enviado: sexta-feira, 26 de agosto de 2022 06:45
Para: Cristina Klippel Dominicini
Cc: 
Assunto: [rare-dev] ecdh vs dh

hi,

can i ask you to help me solve a long lived question of me please:
(i ask you because you're the only well skilled mathematician i know)
(if it's outside of your interest, please forward it someone)

which is harder to find out both a and b:

( (g^a)^b) % p == ( (g^b)^a) % p
where g is 2 or 5, p is a 8192 bit prime, both well known, a and b are both 
secrets
here we are talking about positive integers

or

a*b == b*a
here the computation is performed over 448bit elliptic curves


my reasoning is that reversing the multiplication should be easier than 
solving the discrete logarithm problem

i see that it is an apples to oranges kind of question so a weak conjecture 
is much more than enough

thanks,
cs


________________________________

Esta mensagem (incluindo anexos) contém informação confidencial destinada a 
um usuário específico e seu conteúdo é protegido por lei. Se você não é o 
destinatário correto deve apagar esta mensagem.

O emitente desta mensagem é responsável por seu conteúdo e endereçamento.
Cabe ao destinatário cuidar quanto ao tratamento adequado. A divulgação, 
reprodução e/ou distribuição sem a devida autorização ou qualquer outra ação 
sem conformidade com as normas internas do Ifes são proibidas e passíveis de 
sanção disciplinar, cível e criminal.