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This documentation describes the cryptography API and the syscalls that can be invoked to the operating system to use basic arithmetic and cryptographic functions. It is basically divided into:

  • cryptography API which consists of signature algorithms, hash functions, message authentication codes and encryption algorithms
  • syscalls which enable computations for GF(p) and GF(2n) arithmetic and efficient implementation of elliptic curves.

Here is a non-exhaustive list of supported algorithms:

  • AES and DES in different modes
  • ECDSA with a random or deterministic nonce
  • ECDH
  • Schnorr signature with different implementations, especially the one used for Zilliqa and BIP-0340
  • Multiple hash functions from SHA-2 and SHA-3 families as well as extendable output functions (SHAKE-128 and SHAKE-256)
  • GROESTL and RIPEMD-160
  • Keyed-hash Message Authentication Code

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