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EncryptedPartialSsaShare

hopr_protocol_pix::types

Struct EncryptedPartialSsaShare 

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pub struct EncryptedPartialSsaShare<S: PixSpec>(Array<u8, Sum<<<S as PixSpec>::Curve as Curve>::FieldBytesSize, SsaPolyIndexPrefixSize>>)
where
    <<S as PixSpec>::Curve as Curve>::FieldBytesSize: Add<SsaPolyIndexPrefixSize>,
    Sum<<<S as PixSpec>::Curve as Curve>::FieldBytesSize, SsaPolyIndexPrefixSize>: ArraySize;
Expand description

Contains an encrypted partial Session Stealth Address (SSA) share.

The internal byte layout is:

  1. SsaIndex (big-endian, 4 bytes)
  2. PolynomialIndex (big-endian, 2 bytes)
  3. The encrypted scalar share (FieldBytesSize bytes)

This share can be decrypted to PartialSsaShare to be verified and used for reconstruction.

Tuple Fields§

§0: Array<u8, Sum<<<S as PixSpec>::Curve as Curve>::FieldBytesSize, SsaPolyIndexPrefixSize>>

Implementations§

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impl<S: PixSpec> EncryptedPartialSsaShare<S>
where <<S as PixSpec>::Curve as Curve>::FieldBytesSize: Add<SsaPolyIndexPrefixSize>, Sum<<<S as PixSpec>::Curve as Curve>::FieldBytesSize, SsaPolyIndexPrefixSize>: ArraySize,

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pub fn indices(&self) -> Option<(SsaIndex, PolynomialIndex)>

SsaIndex and PolynomialIndex embedded in this encrypted share.

Returns None if the share is empty.

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pub(crate) fn decrypt( self, pseudonym: &S::Pseudonym, ack_key: &HalfKey, ) -> Result<PartialSsaShare<S>, S::Pseudonym>

Tries to decrypt the encrypted partial SSA share using the provided pseudonym and acknowledgement [HalfKey].

NOTE: that the share must be verified by the reconstructor.

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pub fn is_empty(&self) -> bool

Returns true if the encrypted share is empty (all zeroes or zero SSA index).

Trait Implementations§

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impl<S: PixSpec> AsRef<[u8]> for EncryptedPartialSsaShare<S>
where <<S as PixSpec>::Curve as Curve>::FieldBytesSize: Add<SsaPolyIndexPrefixSize>, Sum<<<S as PixSpec>::Curve as Curve>::FieldBytesSize, SsaPolyIndexPrefixSize>: ArraySize,

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fn as_ref(&self) -> &[u8] ⓘ

Converts this type into a shared reference of the (usually inferred) input type.
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impl<S: PixSpec> BytesRepresentable for EncryptedPartialSsaShare<S>
where <<S as PixSpec>::Curve as Curve>::FieldBytesSize: Add<SsaPolyIndexPrefixSize>, Sum<<<S as PixSpec>::Curve as Curve>::FieldBytesSize, SsaPolyIndexPrefixSize>: ArraySize,

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const SIZE: usize = EncShareSize<S>::USIZE

Size of the encoded byte array.
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fn into_boxed(self) -> Box<[u8]>

Convenience function to copy this type’s binary representation into a Box.
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impl<S: Clone + PixSpec> Clone for EncryptedPartialSsaShare<S>
where <<S as PixSpec>::Curve as Curve>::FieldBytesSize: Add<SsaPolyIndexPrefixSize>, Sum<<<S as PixSpec>::Curve as Curve>::FieldBytesSize, SsaPolyIndexPrefixSize>: ArraySize,

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fn clone(&self) -> EncryptedPartialSsaShare<S>

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl<S: PixSpec + Copy> Copy for EncryptedPartialSsaShare<S>
where <<S as PixSpec>::Curve as Curve>::FieldBytesSize: Add<SsaPolyIndexPrefixSize>, Sum<<<S as PixSpec>::Curve as Curve>::FieldBytesSize, SsaPolyIndexPrefixSize>: ArraySize, Array<u8, Sum<<<S as PixSpec>::Curve as Curve>::FieldBytesSize, SsaPolyIndexPrefixSize>>: Copy,

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impl<S: Debug + PixSpec> Debug for EncryptedPartialSsaShare<S>
where <<S as PixSpec>::Curve as Curve>::FieldBytesSize: Add<SsaPolyIndexPrefixSize>, Sum<<<S as PixSpec>::Curve as Curve>::FieldBytesSize, SsaPolyIndexPrefixSize>: ArraySize,

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

Formats the value using the given formatter. Read more
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impl<S: Default + PixSpec> Default for EncryptedPartialSsaShare<S>
where <<S as PixSpec>::Curve as Curve>::FieldBytesSize: Add<SsaPolyIndexPrefixSize>, Sum<<<S as PixSpec>::Curve as Curve>::FieldBytesSize, SsaPolyIndexPrefixSize>: ArraySize,

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fn default() -> EncryptedPartialSsaShare<S>

Returns the “default value” for a type. Read more
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impl<'de, S: PixSpec> Deserialize<'de> for EncryptedPartialSsaShare<S>
where <<S as PixSpec>::Curve as Curve>::FieldBytesSize: Add<SsaPolyIndexPrefixSize>, Sum<<<S as PixSpec>::Curve as Curve>::FieldBytesSize, SsaPolyIndexPrefixSize>: ArraySize,

Available on crate feature serde only.
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fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error>

Deserialize this value from the given Serde deserializer. Read more
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impl<S: Eq + PixSpec> Eq for EncryptedPartialSsaShare<S>
where <<S as PixSpec>::Curve as Curve>::FieldBytesSize: Add<SsaPolyIndexPrefixSize>, Sum<<<S as PixSpec>::Curve as Curve>::FieldBytesSize, SsaPolyIndexPrefixSize>: ArraySize,

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impl<S: Hash + PixSpec> Hash for EncryptedPartialSsaShare<S>
where <<S as PixSpec>::Curve as Curve>::FieldBytesSize: Add<SsaPolyIndexPrefixSize>, Sum<<<S as PixSpec>::Curve as Curve>::FieldBytesSize, SsaPolyIndexPrefixSize>: ArraySize,

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
1.3.0 · Source§

fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<S: PartialEq + PixSpec> PartialEq for EncryptedPartialSsaShare<S>
where <<S as PixSpec>::Curve as Curve>::FieldBytesSize: Add<SsaPolyIndexPrefixSize>, Sum<<<S as PixSpec>::Curve as Curve>::FieldBytesSize, SsaPolyIndexPrefixSize>: ArraySize,

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fn eq(&self, other: &EncryptedPartialSsaShare<S>) -> bool

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

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

Inequality operator !=. Read more
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impl<S: PixSpec> Serialize for EncryptedPartialSsaShare<S>
where <<S as PixSpec>::Curve as Curve>::FieldBytesSize: Add<SsaPolyIndexPrefixSize>, Sum<<<S as PixSpec>::Curve as Curve>::FieldBytesSize, SsaPolyIndexPrefixSize>: ArraySize,

Available on crate feature serde only.
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fn serialize<Ser: Serializer>( &self, serializer: Ser, ) -> Result<Ser::Ok, Ser::Error>

Serialize this value into the given Serde serializer. Read more
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impl<S: PartialEq + PixSpec> StructuralPartialEq for EncryptedPartialSsaShare<S>
where <<S as PixSpec>::Curve as Curve>::FieldBytesSize: Add<SsaPolyIndexPrefixSize>, Sum<<<S as PixSpec>::Curve as Curve>::FieldBytesSize, SsaPolyIndexPrefixSize>: ArraySize,

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impl<'a, S: PixSpec> TryFrom<&'a [u8]> for EncryptedPartialSsaShare<S>
where <<S as PixSpec>::Curve as Curve>::FieldBytesSize: Add<SsaPolyIndexPrefixSize>, Sum<<<S as PixSpec>::Curve as Curve>::FieldBytesSize, SsaPolyIndexPrefixSize>: ArraySize,

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type Error = GeneralError

The type returned in the event of a conversion error.
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fn try_from(value: &'a [u8]) -> Result<Self, Self::Error>

Performs the conversion.

Auto Trait Implementations§

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impl<S> Freeze for EncryptedPartialSsaShare<S>
where <<<S as PixSpec>::Curve as Curve>::FieldBytesSize as Add<UInt<UInt<UInt<UTerm, B1>, B1>, B0>>>::Output: Sized, <<<<S as PixSpec>::Curve as Curve>::FieldBytesSize as Add<UInt<UInt<UInt<UTerm, B1>, B1>, B0>>>::Output as ArraySize>::ArrayType<u8>: Freeze,

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impl<S> RefUnwindSafe for EncryptedPartialSsaShare<S>
where <<<S as PixSpec>::Curve as Curve>::FieldBytesSize as Add<UInt<UInt<UInt<UTerm, B1>, B1>, B0>>>::Output: Sized, <<<<S as PixSpec>::Curve as Curve>::FieldBytesSize as Add<UInt<UInt<UInt<UTerm, B1>, B1>, B0>>>::Output as ArraySize>::ArrayType<u8>: RefUnwindSafe,

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impl<S> Send for EncryptedPartialSsaShare<S>
where <<<S as PixSpec>::Curve as Curve>::FieldBytesSize as Add<UInt<UInt<UInt<UTerm, B1>, B1>, B0>>>::Output: Sized,

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impl<S> Sync for EncryptedPartialSsaShare<S>
where <<<S as PixSpec>::Curve as Curve>::FieldBytesSize as Add<UInt<UInt<UInt<UTerm, B1>, B1>, B0>>>::Output: Sized,

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impl<S> Unpin for EncryptedPartialSsaShare<S>
where <<<S as PixSpec>::Curve as Curve>::FieldBytesSize as Add<UInt<UInt<UInt<UTerm, B1>, B1>, B0>>>::Output: Sized, <<<<S as PixSpec>::Curve as Curve>::FieldBytesSize as Add<UInt<UInt<UInt<UTerm, B1>, B1>, B0>>>::Output as ArraySize>::ArrayType<u8>: Unpin,

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impl<S> UnsafeUnpin for EncryptedPartialSsaShare<S>
where <<<S as PixSpec>::Curve as Curve>::FieldBytesSize as Add<UInt<UInt<UInt<UTerm, B1>, B1>, B0>>>::Output: Sized, <<<<S as PixSpec>::Curve as Curve>::FieldBytesSize as Add<UInt<UInt<UInt<UTerm, B1>, B1>, B0>>>::Output as ArraySize>::ArrayType<u8>: UnsafeUnpin,

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impl<S> UnwindSafe for EncryptedPartialSsaShare<S>
where <<<S as PixSpec>::Curve as Curve>::FieldBytesSize as Add<UInt<UInt<UInt<UTerm, B1>, B1>, B0>>>::Output: Sized, <<<<S as PixSpec>::Curve as Curve>::FieldBytesSize as Add<UInt<UInt<UInt<UTerm, B1>, B1>, B0>>>::Output as ArraySize>::ArrayType<u8>: UnwindSafe,

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