Re: [Taler] what's a general security parameter

[Christian Grothoff]

It is a parameter you can (more or less) freely raise to increase the 
security of the system while decreasing performance.  Ideally, the 
increase in security is exponential in the security parameter, while the 
corresponding performance degradation is polynomial or linear.

Examples: RSA 1024 vs. RSA 2048 vs. RSA 4096. Here, the security 
parameter is the number of bits, so 1024, 2048 or 4096.  Same for 
SHA-256 or SHA-512.

On 8/11/22 13:46, Calvin Burns via Taler wrote:
> In Zero-Knowledge Age Restriction for GNU Taler [1] λ is a "general security
> parameter". What is a general security parameter?  Could someone please
> point at text books/literature explaining it?  Thanks.
>
> [1] https://taler.net/en/news/2022-09.html