Quantropi QiSpace MASQ is a cryptographic library that provides post-quantum cryptography (PQC) algorithms for asymmetric encryption use cases, specifically key exchange and digital signatures. The library supports NIST-approved PQC algorithms and also includes a proprietary algorithm developed by Quantropi called MPPK (Multivariate Polynomial Public Key), which is designed for resource-constrained environments such as IoT devices. Key functions: - Key Exchange: Enables secure sharing of asymmetric encryption keys by encrypting them with a recipient's public key. Only the holder of the corresponding private key can decrypt the message. - Digital Signatures: Provides message integrity and sender authentication by allowing a sender to sign a message with their private key, which can then be verified using the sender's known public key. Notable characteristics of the library: - Supports NIST-approved PQC algorithms for both key exchange and digital signatures - Includes a proprietary PQC algorithm (MPPK) optimized for resource-constrained devices such as IoT - The proprietary algorithm offers performance advantages including smaller digital signature sizes compared to current NIST PQC candidates - Designed with crypto-agility, allowing users to switch algorithms as the security landscape changes - Gives users flexibility to select the algorithm best suited to their specific requirements