Renaissance greetings depended more on class distinction and gender than anything else. A bow/curtsy/genuflect would be one option, as would the symbolic pack on the cheek. Kissing the hand, either of a maiden or of a royal, or kissing a ring, such as a Pope or King, would be a common choice. Some greetings could be simple nods, others full-blown displays. Raised palms would be more common in travelers meeting on a highway, a symbol of peace and lack of malice (the open palm originated as a show that the person was unarmed).
Hand shaking as actually pretty uncommon as a greeting but prevalent as a sign of a deal or a contract. Those entering a contract would quite literally "shake on it." Strangely, while kissing a cheek or hand was common, there were some strange customs concerning the touching of hand to hand. Some believe that the custom of shaking hands was considered unsanitary, but I'd lean more to it not being a prelude to conversation but an end to it.
Two suggestions for research:
1) Renaissance fairs. Attend one or more, and at least get some of the guides published for behavior. Many of these are quite accurate.
2) Find a copy of The Art of the Courtier, it's an old Italian guide to etiquette from the time period you're looking at. There are others as well, though it was the French courts that really started the whole etiquette trend.
Jeff