Endomorphism support for the EC math classes — the GLV / GLS decomposition tables
that accelerate scalar multiplication on suitable curves (secp256k1, etc.).
Constant-time implementations of the Ed25519 and Ed448 signature schemes per RFC 8032,
sitting on top of the Curve25519 / Curve448 scalar-multiplication in
org.bouncycastle.math.ec.rfc7748.
Standalone tools for working with elliptic curves — discrete log calculators, curve
parameter generators, and table-generation utilities used to bootstrap the named
curves in org.bouncycastle.math.ec.