Struct Curve 

pub struct Curve {}

Curve represents the Ed25519 group. There are no parameters and no initialization is required because it supports only this one specific curve.

Implementations

impl Curve

pub const fn new() -> Self

pub fn new_key_and_seed_with_input( self, buffer: &[u8], ) -> (Scalar, &[u8], Vec<u8>)

[new_key_and_seed_with_input()] returns a formatted Ed25519 key (avoid subgroup attack by requiring it to be a multiple of 8). It also returns the input and the digest used to generate the key.

pub fn new_key_and_seed<S: Stream>( self, stream: &mut S, ) -> Result<(Scalar, Vec<u8>, Vec<u8>), CurveError>

[new_key_and_seed()] returns a formatted Ed25519 key (avoid subgroup attack by requiring it to be a multiple of 8). It also returns the seed and the input used to generate the key.

Trait Implementations

impl Clone for Curve

fn clone(&self) -> Curve

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Curve

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Curve

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Curve

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Dh for Curve

type H = CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, OidSha256>>

fn dh_exchange<SUITE: Suite>( suite: SUITE, own_private: <SUITE::POINT as Point>::SCALAR, remote_public: SUITE::POINT, ) -> SUITE::POINT

[dh_exchange()] computes the shared key from a private key and a public key

fn hkdf( ikm: &[u8], info: &[u8], output_size: Option<usize>, ) -> Result<Vec<u8>, DhError>

fn aes_encrypt( key: &[u8], nonce: &[u8; 12], data: &[u8], additional_data: Option<&[u8]>, ) -> Result<Vec<u8>, DhError>

fn aes_decrypt( key: &[u8], nonce: &[u8; 12], ciphertext: &[u8], additional_data: Option<&[u8]>, ) -> Result<Vec<u8>, DhError>

fn encrypt<POINT: Point>( pre_key: &POINT, info: &[u8], nonce: &[u8; 12], data: &[u8], ) -> Result<Vec<u8>, DhError>

fn decrypt<POINT: Point>( pre_key: &POINT, info: &[u8], nonce: &[u8; 12], cipher: &[u8], ) -> Result<Vec<u8>, DhError>

impl Display for Curve

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Generator<Scalar> for Curve

fn new_key<S: Stream>(&self, stream: &mut S) -> Result<Option<Scalar>, KeyError>

[new_key()] returns a formatted Ed25519 key (avoiding subgroup attack by requiring it to be a multiple of 8). [new_key()] implements the Generator trait.

impl Group for Curve

fn scalar(&self) -> Scalar

[scalar()] creates a new scalar for the prime-order subgroup of the Ed25519 curve. The scalars in this package implement scalar’s [set_bytes()] method, interpreting the bytes as a little-endian integer, in order to remain compatible with other Ed25519 implementations, and with the standard implementation of the EdDSA signature.

fn scalar_len(&self) -> usize

[scalar_len()] returns 32, the size in bytes of an encoded Scalar for the Ed25519 curve.

fn point_len(&self) -> usize

[point_len()] returns 32, the size in bytes of an encoded Point on the Ed25519 curve.

type POINT = Point

fn point(&self) -> Point

[point()] create new point

fn is_prime_order(&self) -> Option<bool>

[is_prime_order()] returns Some(true) if the group has a prime order, if None is returned is assumes that the group has a prime order

impl Serialize for Curve

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for Curve