Prothean Cipher

"The cipher contains the knowledge of a people: the prothean people. Once you have it, it will take time to process. But you need the cipher, for you cannot hope to stop Saren without it."

— Shiala R'Ness.

The Prothean Cipher is a mental translation and conglomeration of prothean language, history and culture concealed and packaged into a single transmittable thought. The weight of this thought is astounding however. The only known case of a prothean cipher was from the Thorian, who gained the knowledge needed for the cipher when it consumed hundreds of dead protheans.