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In my c# application, I'm using RSA to sign files before being uploaded on the database of my company by the person who is uploading and here I have to choose SHA-1 or SHA-2 for computing the hash.
As any other component in programming, I know that there must be a "use this here" and "use that there" for the two of them.
So, When this? and when that?
EDIT:
My question is: What is the difference regarding performance? and not regarding security, as I already know that SHA-2 is more solid secure than SHA-1.
In this Link a comparison between different types of SHA-2 noting when to use SHA-512 and when not in the end. I need a similar argument about SHA-1 and SHA-2.