Crate rust_elgamal

Structs

Ciphertext

An ElGamal ciphertext.

CompressedRistretto

A Ristretto point, in compressed wire format.

DecryptionKey

An ElGamal decryption key (also called a private key in other implementations).

EncryptionKey

An ElGamal encryption key (also called a public key in other implementations). To create a new encryption key, see DecryptionKey.

RistrettoPoint

A RistrettoPoint represents a point in the Ristretto group for Curve25519. Ristretto, a variant of Decaf, constructs a prime-order group as a quotient group of a subgroup of (the Edwards form of) Curve25519.

Scalar

The Scalar struct holds an integer \(s < 2^{255} \) which represents an element of \(\mathbb Z / \ell\).

Constants

GENERATOR_POINT

The group generator as a single point. If you’re trying to create a scalar multiple of the generator, you probably want GENERATOR_TABLE instead.

GENERATOR_POINT_COMPRESSED

The group generator as a single point, compressed for transit. If you’re trying to create a scalar multiple of the generator, you probably want GENERATOR_TABLE instead.

GENERATOR_TABLE

The group generator as a table of precomputed multiples. This is the most efficient way to produce a scalar multiple of the generator.

Traits

Identity

Trait for getting the identity element of a point type.

IsIdentity

Trait for testing if a curve point is equivalent to the identity point.

MultiscalarMul

A trait for constant-time multiscalar multiplication without precomputation.