ZKDocs provides high-level summaries, protocol diagrams, important security considerations, and more for common non-standardized cryptographic protocols, like zero-knowledge proofs. We’ve updated ZKDocs with an explanation of the most common commitment scheme, Pedersen commitments, as well as of two common PCSs: the IPA PCS (derived from the IPA) and the KZG PCS. Many aspects of cryptography often deal with random values and prime numbers; a common requirement for various protocols is needing to generate a random value between 0 and p for some prime p .