Struct GroupedElGamalCiphertext

pub struct GroupedElGamalCiphertext<const N: usize> {
    pub commitment: PedersenCommitment,
    pub handles: [DecryptHandle; N],
}

A grouped ElGamal ciphertext.

The type is defined with a generic constant parameter that specifies the number of decryption handles that the ciphertext holds.

Fields

commitment: PedersenCommitment

handles: [DecryptHandle; N]

Implementations

impl<const N: usize> GroupedElGamalCiphertext<N>

pub fn decrypt( &self, secret: &ElGamalSecretKey, index: usize, ) -> Result<DiscreteLog, GroupedElGamalError>

Decrypts the grouped ElGamal ciphertext using an ElGamal secret key pertaining to a specified index.

The output of this function is of type DiscreteLog. To recover the originally encrypted amount, use DiscreteLog::decode.

pub fn decrypt_u32( &self, secret: &ElGamalSecretKey, index: usize, ) -> Result<Option<u64>, GroupedElGamalError>

Decrypts the grouped ElGamal ciphertext to a number that is interpreted as a positive 32-bit number (but still of type u64).

If the originally encrypted amount is not a positive 32-bit number, then the function returns None.

pub fn to_bytes(&self) -> Vec<u8>

pub fn from_bytes(bytes: &[u8]) -> Option<Self>

Trait Implementations

impl<const N: usize> Clone for GroupedElGamalCiphertext<N>

fn clone(&self) -> GroupedElGamalCiphertext<N>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<const N: usize> Debug for GroupedElGamalCiphertext<N>

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

Formats the value using the given formatter.

impl From<GroupedElGamalCiphertext<2>> for GroupedElGamalCiphertext2Handles

fn from(decoded_ciphertext: GroupedElGamalCiphertext<2>) -> Self

Converts to this type from the input type.

impl From<GroupedElGamalCiphertext<3>> for GroupedElGamalCiphertext3Handles

fn from(decoded_ciphertext: GroupedElGamalCiphertext<3>) -> Self

Converts to this type from the input type.

impl<const N: usize> PartialEq for GroupedElGamalCiphertext<N>

fn eq(&self, other: &GroupedElGamalCiphertext<N>) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl TryFrom<GroupedElGamalCiphertext2Handles> for GroupedElGamalCiphertext<2>

type Error = ElGamalError

The type returned in the event of a conversion error.

fn try_from( pod_ciphertext: GroupedElGamalCiphertext2Handles, ) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<GroupedElGamalCiphertext3Handles> for GroupedElGamalCiphertext<3>

type Error = ElGamalError

The type returned in the event of a conversion error.

fn try_from( pod_ciphertext: GroupedElGamalCiphertext3Handles, ) -> Result<Self, Self::Error>

Performs the conversion.

impl<const N: usize> Copy for GroupedElGamalCiphertext<N>

impl<const N: usize> Eq for GroupedElGamalCiphertext<N>

impl<const N: usize> StructuralPartialEq for GroupedElGamalCiphertext<N>