Struct scicrypt::cryptosystems::curve_el_gamal::CurveElGamalPK

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pub struct CurveElGamalPK { /* private fields */ }

Expand description

Encryption key for curve-based ElGamal

Implementations

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impl CurveElGamalPK

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pub fn precompute(self) -> PrecomputedCurveElGamalPK

Precompute values for the encryption key to speed-up future encryptions

Trait Implementations

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impl Associable<CurveElGamalPK> for CurveElGamalCiphertext

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fn associate(self, public_key: &PK) -> AssociatedCiphertext<'_, Self, PK>

‘Enriches’ a ciphertext by associating it with a corresponding public key. This allows to overlead operators for homomorphic operations.

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impl Debug for CurveElGamalPK

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

Formats the value using the given formatter. Read more

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impl DecryptionKey<CurveElGamalPK> for CurveElGamalSK

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fn decrypt_raw(
    &self,
    _public_key: &CurveElGamalPK,
    ciphertext: &CurveElGamalCiphertext
) -> RistrettoPoint

Decrypt the ciphertext using the secret key and its related public key.

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fn decrypt(
&self,
ciphertext: &AssociatedCiphertext<'pk, <PK as EncryptionKey>::Ciphertext, PK>
) -> <PK as EncryptionKey>::Plaintext

Decrypt the associated ciphertext using the secret key.

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impl DecryptionShare<CurveElGamalPK> for NOfNCurveElGamalShare

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fn combine(
decryption_shares: &[NOfNCurveElGamalShare ],
_public_key: &CurveElGamalPK
) -> Result<RistrettoPoint, DecryptionError>

Combine $t$ decryption shares belonging to distinct partial keys to finish decryption. It is the responsibility of the programmer to supply the right number of decryption shares to this function. Read more

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impl DecryptionShare<CurveElGamalPK> for TOfNCurveElGamalShare

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fn combine(
decryption_shares: &[TOfNCurveElGamalShare ],
_public_key: &CurveElGamalPK
) -> Result<RistrettoPoint, DecryptionError>

Combine $t$ decryption shares belonging to distinct partial keys to finish decryption. It is the responsibility of the programmer to supply the right number of decryption shares to this function. Read more

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impl EncryptionKey for CurveElGamalPK

type Input = Scalar

Input is the type used to multiply additive ciphertexts or exponentiate multiplicative ciphertexts.

type Plaintext = RistrettoPoint

The type of the plaintext to be encrypted.

type Ciphertext = CurveElGamalCiphertext

The type of an encrypted plaintext, i.e. a ciphertext.

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fn encrypt_raw<R>(
 &self,
 plaintext: &RistrettoPoint,
 rng: &mut GeneralRng<R>
) -> CurveElGamalCiphertext where
 R: SecureRng,

Encrypt the plaintext using the public key and a cryptographic RNG.

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fn encrypt<R>(
 &'pk self,
 plaintext: &Self::Plaintext,
 rng: &mut GeneralRng<R>
) -> AssociatedCiphertext<'pk, Self::Ciphertext, Self> where
 R: SecureRng,

Encrypt the plaintext using the public key and a cryptographic RNG and immediately associate it with the public key.

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impl HomomorphicAddition for CurveElGamalPK

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fn add(
 &self,
 ciphertext_a: <CurveElGamalPK as EncryptionKey>::Ciphertext,
 ciphertext_b: <CurveElGamalPK as EncryptionKey>::Ciphertext
) -> <CurveElGamalPK as EncryptionKey>::Ciphertext

Combines two ciphertexts so that their decrypted value reflects some addition operation

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fn mul(
 &self,
 ciphertext: <CurveElGamalPK as EncryptionKey>::Ciphertext,
 input: <CurveElGamalPK as EncryptionKey>::Input
) -> <CurveElGamalPK as EncryptionKey>::Ciphertext

Applies some operation on a ciphertext so that the decrypted value reflects some multiplication with input

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impl PartialDecryptionKey<CurveElGamalPK> for TOfNCurveElGamalSK

type DecryptionShare = TOfNCurveElGamalShare

The type of the decryption share. If enough decryption shares of different keys are combined, they output the correct decryption.

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fn partial_decrypt_raw(
    &self,
    _public_key: &CurveElGamalPK,
    ciphertext: &CurveElGamalCiphertext
) -> TOfNCurveElGamalShare

Partially decrypts a ciphertext, returning a valid decryption share.

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fn partial_decrypt(
&self,
ciphertext: &AssociatedCiphertext<'pk, <PK as EncryptionKey>::Ciphertext, PK>
) -> Self::DecryptionShare

Partially decrypts a ciphertext, returning a valid decryption share.

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impl PartialDecryptionKey<CurveElGamalPK> for NOfNCurveElGamalSK

type DecryptionShare = NOfNCurveElGamalShare

The type of the decryption share. If enough decryption shares of different keys are combined, they output the correct decryption.

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fn partial_decrypt_raw(
    &self,
    _public_key: &CurveElGamalPK,
    ciphertext: &CurveElGamalCiphertext
) -> NOfNCurveElGamalShare

Partially decrypts a ciphertext, returning a valid decryption share.

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fn partial_decrypt(
&self,
ciphertext: &AssociatedCiphertext<'pk, <PK as EncryptionKey>::Ciphertext, PK>
) -> Self::DecryptionShare

Partially decrypts a ciphertext, returning a valid decryption share.

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impl PartialEq<CurveElGamalPK> for CurveElGamalPK

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fn eq(&self, other: &CurveElGamalPK) -> bool

This method tests for self and other values to be equal, and is used by ==. Read more

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fn ne(&self, other: &CurveElGamalPK) -> bool

This method tests for !=.

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impl StructuralPartialEq for CurveElGamalPK

Auto Trait Implementations

impl RefUnwindSafe for CurveElGamalPK

impl Send for CurveElGamalPK

impl Sync for CurveElGamalPK

impl Unpin for CurveElGamalPK

impl UnwindSafe for CurveElGamalPK

Blanket Implementations

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impl<T> Any for T where
T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Az for T

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fn az<Dst>(self) -> Dst where
T: Cast<Dst>,

Casts the value.

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impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<Src, Dst> CastFrom<Src> for Dst where
Src: Cast<Dst>,

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fn cast_from(src: Src) -> Dst

Casts the value.

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impl<T> CheckedAs for T

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fn checked_as<Dst>(self) -> Option<Dst> where
T: CheckedCast<Dst>,

Casts the value.

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impl<Src, Dst> CheckedCastFrom<Src> for Dst where
Src: CheckedCast<Dst>,

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fn checked_cast_from(src: Src) -> Option<Dst>

Casts the value.

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into for T where
U: From<T>,

const: unstable · source

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> OverflowingAs for T

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fn overflowing_as<Dst>(self) -> (Dst, bool ) where
T: OverflowingCast<Dst>,

Casts the value.

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impl<Src, Dst> OverflowingCastFrom<Src> for Dst where
Src: OverflowingCast<Dst>,

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fn overflowing_cast_from(src: Src) -> (Dst, bool )

OverflowingCasts the value.

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impl<T> Same<T> for T

type Output = T

Should always be Self

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impl<T> SaturatingAs for T

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fn saturating_as<Dst>(self) -> Dst where
T: SaturatingCast<Dst>,

Casts the value.

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impl<Src, Dst> SaturatingCastFrom<Src> for Dst where
Src: SaturatingCast<Dst>,

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fn saturating_cast_from(src: Src) -> Dst

Casts the value.

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impl<T, U> TryFrom for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

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impl<T> UnwrappedAs for T

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fn unwrapped_as<Dst>(self) -> Dst where
T: UnwrappedCast<Dst>,

Casts the value.

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impl<Src, Dst> UnwrappedCastFrom<Src> for Dst where
Src: UnwrappedCast<Dst>,

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fn unwrapped_cast_from(src: Src) -> Dst

UnwrappedCasts the value.

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impl<T> WrappingAs for T

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fn wrapping_as<Dst>(self) -> Dst where
T: WrappingCast<Dst>,

Casts the value.

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impl<Src, Dst> WrappingCastFrom<Src> for Dst where
Src: WrappingCast<Dst>,

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fn wrapping_cast_from(src: Src) -> Dst

WrappingCasts the value.

Struct scicrypt::cryptosystems::curve_el_gamal::CurveElGamalPK

Implementations

impl CurveElGamalPK

pub fn precompute(self) -> PrecomputedCurveElGamalPK

Trait Implementations

impl Associable<CurveElGamalPK> for CurveElGamalCiphertext

fn associate(self, public_key: &PK) -> AssociatedCiphertext<'_, Self, PK>

impl Debug for CurveElGamalPK

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

impl DecryptionKey<CurveElGamalPK> for CurveElGamalSK

fn decrypt_raw( &self, _public_key: &CurveElGamalPK, ciphertext: &CurveElGamalCiphertext) -> RistrettoPoint

fn decrypt( &self, ciphertext: &AssociatedCiphertext<'pk, <PK as EncryptionKey>::Ciphertext, PK>) -> <PK as EncryptionKey>::Plaintext

impl DecryptionShare<CurveElGamalPK> for NOfNCurveElGamalShare

fn combine( decryption_shares: &[NOfNCurveElGamalShare], _public_key: &CurveElGamalPK) -> Result<RistrettoPoint, DecryptionError>

impl DecryptionShare<CurveElGamalPK> for TOfNCurveElGamalShare

fn combine( decryption_shares: &[TOfNCurveElGamalShare], _public_key: &CurveElGamalPK) -> Result<RistrettoPoint, DecryptionError>

impl EncryptionKey for CurveElGamalPK

type Input = Scalar

type Plaintext = RistrettoPoint

type Ciphertext = CurveElGamalCiphertext

fn encrypt_raw<R>( &self, plaintext: &RistrettoPoint, rng: &mut GeneralRng<R>) -> CurveElGamalCiphertext where R: SecureRng,

fn encrypt<R>( &'pk self, plaintext: &Self::Plaintext, rng: &mut GeneralRng<R>) -> AssociatedCiphertext<'pk, Self::Ciphertext, Self> where R: SecureRng,

impl HomomorphicAddition for CurveElGamalPK

fn add( &self, ciphertext_a: <CurveElGamalPK as EncryptionKey>::Ciphertext, ciphertext_b: <CurveElGamalPK as EncryptionKey>::Ciphertext) -> <CurveElGamalPK as EncryptionKey>::Ciphertext

fn mul( &self, ciphertext: <CurveElGamalPK as EncryptionKey>::Ciphertext, input: <CurveElGamalPK as EncryptionKey>::Input) -> <CurveElGamalPK as EncryptionKey>::Ciphertext

impl PartialDecryptionKey<CurveElGamalPK> for TOfNCurveElGamalSK

type DecryptionShare = TOfNCurveElGamalShare

fn partial_decrypt_raw( &self, _public_key: &CurveElGamalPK, ciphertext: &CurveElGamalCiphertext) -> TOfNCurveElGamalShare

fn partial_decrypt( &self, ciphertext: &AssociatedCiphertext<'pk, <PK as EncryptionKey>::Ciphertext, PK>) -> Self::DecryptionShare

impl PartialDecryptionKey<CurveElGamalPK> for NOfNCurveElGamalSK

type DecryptionShare = NOfNCurveElGamalShare

fn partial_decrypt_raw( &self, _public_key: &CurveElGamalPK, ciphertext: &CurveElGamalCiphertext) -> NOfNCurveElGamalShare

fn partial_decrypt( &self, ciphertext: &AssociatedCiphertext<'pk, <PK as EncryptionKey>::Ciphertext, PK>) -> Self::DecryptionShare

impl PartialEq<CurveElGamalPK> for CurveElGamalPK

fn eq(&self, other: &CurveElGamalPK) -> bool

fn ne(&self, other: &CurveElGamalPK) -> bool

impl StructuralPartialEq for CurveElGamalPK

Auto Trait Implementations

impl RefUnwindSafe for CurveElGamalPK

impl Send for CurveElGamalPK

impl Sync for CurveElGamalPK

impl Unpin for CurveElGamalPK

impl UnwindSafe for CurveElGamalPK

Blanket Implementations

impl<T> Any for T where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Az for T

fn az<Dst>(self) -> Dst where T: Cast<Dst>,

impl<T> Borrow<T> for T where T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<Src, Dst> CastFrom<Src> for Dst where Src: Cast<Dst>,

fn cast_from(src: Src) -> Dst

impl<T> CheckedAs for T

fn checked_as<Dst>(self) -> Option<Dst> where T: CheckedCast<Dst>,

impl<Src, Dst> CheckedCastFrom<Src> for Dst where Src: CheckedCast<Dst>,

fn checked_cast_from(src: Src) -> Option<Dst>

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for T where U: From<T>,

fn into(self) -> U

impl<T> OverflowingAs for T

fn overflowing_as<Dst>(self) -> (Dst, bool) where T: OverflowingCast<Dst>,

impl<Src, Dst> OverflowingCastFrom<Src> for Dst where Src: OverflowingCast<Dst>,

fn overflowing_cast_from(src: Src) -> (Dst, bool)

impl<T> Same<T> for T

type Output = T

impl<T> SaturatingAs for T

fn saturating_as<Dst>(self) -> Dst where T: SaturatingCast<Dst>,

impl<Src, Dst> SaturatingCastFrom<Src> for Dst where Src: SaturatingCast<Dst>,

fn saturating_cast_from(src: Src) -> Dst

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<T> UnwrappedAs for T

fn unwrapped_as<Dst>(self) -> Dst where T: UnwrappedCast<Dst>,

fn decrypt_raw(
&self,
_public_key: &CurveElGamalPK,
ciphertext: &CurveElGamalCiphertext
) -> RistrettoPoint

fn decrypt(
&self,
ciphertext: &AssociatedCiphertext<'pk, <PK as EncryptionKey>::Ciphertext, PK>
) -> <PK as EncryptionKey>::Plaintext

fn combine(
decryption_shares: &[NOfNCurveElGamalShare ],
_public_key: &CurveElGamalPK
) -> Result<RistrettoPoint, DecryptionError>

fn combine(
decryption_shares: &[TOfNCurveElGamalShare ],
_public_key: &CurveElGamalPK
) -> Result<RistrettoPoint, DecryptionError>

fn encrypt_raw<R>(
&self,
plaintext: &RistrettoPoint,
rng: &mut GeneralRng<R>
) -> CurveElGamalCiphertext where
R: SecureRng,

fn encrypt<R>(
&'pk self,
plaintext: &Self::Plaintext,
rng: &mut GeneralRng<R>
) -> AssociatedCiphertext<'pk, Self::Ciphertext, Self> where
R: SecureRng,

fn add(
&self,
ciphertext_a: <CurveElGamalPK as EncryptionKey>::Ciphertext,
ciphertext_b: <CurveElGamalPK as EncryptionKey>::Ciphertext
) -> <CurveElGamalPK as EncryptionKey>::Ciphertext

fn mul(
&self,
ciphertext: <CurveElGamalPK as EncryptionKey>::Ciphertext,
input: <CurveElGamalPK as EncryptionKey>::Input
) -> <CurveElGamalPK as EncryptionKey>::Ciphertext

fn partial_decrypt_raw(
&self,
_public_key: &CurveElGamalPK,
ciphertext: &CurveElGamalCiphertext
) -> TOfNCurveElGamalShare

fn partial_decrypt(
&self,
ciphertext: &AssociatedCiphertext<'pk, <PK as EncryptionKey>::Ciphertext, PK>
) -> Self::DecryptionShare

fn partial_decrypt_raw(
&self,
_public_key: &CurveElGamalPK,
ciphertext: &CurveElGamalCiphertext
) -> NOfNCurveElGamalShare

fn partial_decrypt(
&self,
ciphertext: &AssociatedCiphertext<'pk, <PK as EncryptionKey>::Ciphertext, PK>
) -> Self::DecryptionShare

impl<T> Any for T where
T: 'static + ?Sized,

fn az<Dst>(self) -> Dst where
T: Cast<Dst>,

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

impl<Src, Dst> CastFrom<Src> for Dst where
Src: Cast<Dst>,

fn checked_as<Dst>(self) -> Option<Dst> where
T: CheckedCast<Dst>,

impl<Src, Dst> CheckedCastFrom<Src> for Dst where
Src: CheckedCast<Dst>,

impl<T, U> Into<U> for T where
U: From<T>,

fn overflowing_as<Dst>(self) -> (Dst, bool ) where
T: OverflowingCast<Dst>,

impl<Src, Dst> OverflowingCastFrom<Src> for Dst where
Src: OverflowingCast<Dst>,

fn overflowing_cast_from(src: Src) -> (Dst, bool )

fn saturating_as<Dst>(self) -> Dst where
T: SaturatingCast<Dst>,

impl<Src, Dst> SaturatingCastFrom<Src> for Dst where
Src: SaturatingCast<Dst>,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

fn unwrapped_as<Dst>(self) -> Dst where
T: UnwrappedCast<Dst>,

impl<Src, Dst> UnwrappedCastFrom<Src> for Dst where
Src: UnwrappedCast<Dst>,

fn wrapping_as<Dst>(self) -> Dst where
T: WrappingCast<Dst>,

impl<Src, Dst> WrappingCastFrom<Src> for Dst where
Src: WrappingCast<Dst>,