Hi,
I'm sure this will be completely obvious for someone, but it eludes me.
What type of encryption is used in the following text? (this isn't homework)
Ysq xaxrvl! W zsix yfi dmdxd kvaw obdvcl! A'q oxrp jwvr loifq xatt pcm wixnk mgyk mids uvtvkzby xabs, sil xabs yok rhmhzby xh wo nwll tgy...