Struct CiphertextAlt 

pub struct CiphertextAlt<E: Pairing> {
    pub X_r: E::G1Affine,
    pub enc_chunks: Vec<E::G1Affine>,
    pub commitment: E::G1Affine,
    pub X_r_sum: E::G1Affine,
}

Ciphertext used with LegoGroth16 and the slightly modified SAVER protocol. See saver_legogroth16::protocol_2 for more details.

Fields

X_r: E::G1Affine

enc_chunks: Vec<E::G1Affine>

commitment: E::G1Affine

X_r_sum: E::G1Affine

Implementations

impl<E: Pairing> CiphertextAlt<E>

pub fn decrypt( &self, sk: &SecretKey<E::ScalarField>, dk: impl Into<PreparedDecryptionKey<E>>, g_i: &[E::G1Affine], chunk_bit_size: u8, ) -> Result<(E::ScalarField, E::G1Affine)>

Decrypt this ciphertext returning the plaintext and commitment to randomness

pub fn decrypt_given_pairing_powers( &self, sk: &SecretKey<E::ScalarField>, dk: impl Into<PreparedDecryptionKey<E>>, g_i: &[E::G1Affine], chunk_bit_size: u8, pairing_powers: &[Vec<PairingOutput<E>>], ) -> Result<(E::ScalarField, E::G1Affine)>

Same as Self::decrypt but takes pairing powers (see PreparedDecryptionKey::pairing_powers) that can be precomputed for faster decryption

pub fn verify_commitment( &self, ek: impl Into<PreparedEncryptionKey<E>>, gens: impl Into<PreparedEncryptionGens<E>>, ) -> Result<()>

Verify that the ciphertext correctly commits to the message

pub fn verify_decryption( &self, message: &E::ScalarField, nu: &E::G1Affine, chunk_bit_size: u8, dk: impl Into<PreparedDecryptionKey<E>>, g_i: &[E::G1Affine], gens: impl Into<PreparedEncryptionGens<E>>, ) -> Result<()>

Verify that the decrypted message corresponds to original plaintext in the ciphertext

pub fn verify_decryption_with_randomized_pairing_checker( &self, message: &E::ScalarField, nu: &E::G1Affine, chunk_bit_size: u8, dk: impl Into<PreparedDecryptionKey<E>>, g_i: &[E::G1Affine], gens: impl Into<PreparedEncryptionGens<E>>, pairing_checker: &mut RandomizedPairingChecker<E>, ) -> Result<()>

Verify that the decrypted message corresponds to original plaintext in the ciphertext but using randomized pairing checker

pub fn decrypt_given_legogroth16_vk( &self, sk: &SecretKey<E::ScalarField>, dk: impl Into<PreparedDecryptionKey<E>>, snark_vk: &VerifyingKey<E>, chunk_bit_size: u8, ) -> Result<(E::ScalarField, E::G1Affine)>

pub fn verify_decryption_given_legogroth16_vk( &self, message: &E::ScalarField, chunk_bit_size: u8, nu: &E::G1Affine, dk: impl Into<PreparedDecryptionKey<E>>, snark_vk: &VerifyingKey<E>, gens: impl Into<PreparedEncryptionGens<E>>, ) -> Result<()>

Trait Implementations

impl<E: Pairing> CanonicalDeserialize for CiphertextAlt<E>

fn deserialize_with_mode<R: Read>( reader: R, compress: Compress, validate: Validate, ) -> Result<Self, SerializationError>

The general deserialize method that takes in customization flags.

fn deserialize_compressed<R>(reader: R) -> Result<Self, SerializationError>

where R: Read,

fn deserialize_compressed_unchecked<R>( reader: R, ) -> Result<Self, SerializationError>

where R: Read,

fn deserialize_uncompressed<R>(reader: R) -> Result<Self, SerializationError>

where R: Read,

fn deserialize_uncompressed_unchecked<R>( reader: R, ) -> Result<Self, SerializationError>

where R: Read,

impl<E: Pairing> CanonicalSerialize for CiphertextAlt<E>

fn serialize_with_mode<W: Write>( &self, writer: W, compress: Compress, ) -> Result<(), SerializationError>

The general serialize method that takes in customization flags.

fn serialized_size(&self, compress: Compress) -> usize

fn serialize_compressed<W>(&self, writer: W) -> Result<(), SerializationError>

where W: Write,

fn compressed_size(&self) -> usize

fn serialize_uncompressed<W>(&self, writer: W) -> Result<(), SerializationError>

where W: Write,

fn uncompressed_size(&self) -> usize

impl<E: Clone + Pairing> Clone for CiphertextAlt<E>

where E::G1Affine: Clone,

fn clone(&self) -> CiphertextAlt<E>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<E: Debug + Pairing> Debug for CiphertextAlt<E>

where E::G1Affine: Debug,

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

Formats the value using the given formatter.

impl<E: Eq + Pairing> Eq for CiphertextAlt<E>

where E::G1Affine: Eq,

impl<E: PartialEq + Pairing> PartialEq for CiphertextAlt<E>

where E::G1Affine: PartialEq,

fn eq(&self, other: &CiphertextAlt<E>) -> 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<E: Pairing> StructuralPartialEq for CiphertextAlt<E>

impl<E: Pairing> Valid for CiphertextAlt<E>

fn check(&self) -> Result<(), SerializationError>

fn batch_check<'a>( batch: impl Iterator<Item = &'a Self> + Send, ) -> Result<(), SerializationError>

where Self: 'a,