About SCAPISCAPI is an open-source Java library for implementing secure two-party and multiparty computation protocols (SCAPI stands for the "Secure Computation API"). It provides a reliable, efficient, and highly flexible cryptographic infrastructure. SCAPI is comprised of three layers:
- 1. Low-level cryptographic functions: these are functions that are basic building blocks for cryptographic constructions (e.g., pseudorandom functions, pseudorandom generators, discrete logarithm groups, hash functions and more belong to this layer).
- 2. Non-interactive mid-level cryptographic functions: these are non-interactive functions that can be applications within themselves in addition to being tools (e.g., encryption and signature schemes belong to this layer).
- 3. Interactive cryptographic protocols: these are interactive protocols involving two or more parties; typically, the protocols in this layer are popular building blocks like commitment schemes, zero knowledge proofs and oblivious transfer. This layer is yet to be released.
More information about SCAPI appears in this paper, and on the Documentation page.