Function verify_key_proofs 

pub fn verify_key_proofs(
    response: KeyResponse,
    challenge: &KeyChallenge,
) -> Result<(HashSet<VerifyingKey>, KeyResult), Error>

Verifies all key proofs in a response

Each key proof is verified independently. The function continues even if some proofs fail, collecting all successful verifications.

Arguments

• response - Client’s response containing key proofs
• challenge - Original key challenge (needed for signature verification)

Returns

A tuple containing:

• Set of successfully verified public keys (as encoded bytes)
• Key specific result indicating which proofs succeeded/failed