arXiv:2611.10020v1 Announce Type: new Abstract: Secure aggregation in domains such as federated learning, Internet of Things, and voting requires operating on private inputs while preserving confidentiality, verifying that each input satisfies constraints, and avoiding trusted parties. Existing prot
zk-DEAP: A Zero-Knowledge Decentralized Encrypted Aggregation Protocol
arXiv:2611.10020v1 Announce Type: new Abstract: Secure aggregation in domains such as federated learning, Internet of Things, and voting requires operating on private inputs while preserving confidentiality, verifying that each input satisfies constraints, and avoiding trusted parties. Existing protocols achieve at most two of these requirements. We present zk-DEAP, a protocol combining lifted ElGamal homomorphic encryption, FROST threshold cryptography, and zero-knowledge proofs (Bulletproofs, zk-SNARKs, or zk-STARKs) for fully decentralized, verifiable, privacy-preserving aggregation. Our core technical contribution is a cryptographic binding mechanism preventing substitution attacks, where a valid proof for one input is paired with a ciphertext encrypting a different, malicious value. F