In OAuth: use MAC-SHA1 or RSA-SHA1?

Question

Concerning OAuth, what is the most suitable cryptography/encryption method to use HMAC-SHA1 or RSA-SHA1 ?

Thanks.

Answer 1

After looking, it's seems that HMAC is much faster and better in term of security even if the underlying hash function (SHA1) is broken, which is not the case when using RSA-SHA1.