Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
A Practical Introduction to GNU Privacy Guard in Windows recommends DSA and ElGamal, but I would like to know if RSA is good enough to use these days, and if so, what minimum key size should I use? Is it ok to use SHA-256 for signing (for compatibility with e-mail clients)?
Also, beside e-ignite: Key Types, can you point to other sources for this subject?
RSA/DSA minimum today is 1024 bit actually, so Elleptical Curves becoming more in use since they are faster and using shorter keys.
To have a similar security as AES256 you will need at least 3072 bit (384 bytes) key…
Email clients using certificates nowadays – so it’s separate thing (X.509), but for using with RSA/DSA most common option is SHA-1 (somewhat weak now).
I recommend study of: