Struct ics23::ProofSpec

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pub struct ProofSpec {
    pub leaf_spec: Option<LeafOp>,
    pub inner_spec: Option<InnerSpec>,
    pub max_depth: i32,
    pub min_depth: i32,
    pub prehash_key_before_comparison: bool,
}
Expand description

ProofSpec defines what the expected parameters are for a given proof type. This can be stored in the client and used to validate any incoming proofs.

verify(ProofSpec, Proof) -> Proof | Error

As demonstrated in tests, if we don’t fix the algorithm used to calculate the LeafHash for a given tree, there are many possible key-value pairs that can generate a given hash (by interpretting the preimage differently). We need this for proper security, requires client knows a priori what tree format server uses. But not in code, rather a configuration object.

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§leaf_spec: Option<LeafOp>

any field in the ExistenceProof must be the same as in this spec. except Prefix, which is just the first bytes of prefix (spec can be longer)

§inner_spec: Option<InnerSpec>§max_depth: i32

max_depth (if > 0) is the maximum number of InnerOps allowed (mainly for fixed-depth tries)

§min_depth: i32

min_depth (if > 0) is the minimum number of InnerOps allowed (mainly for fixed-depth tries)

§prehash_key_before_comparison: bool

prehash_key_before_comparison is a flag that indicates whether to use the prehash_key specified by LeafOp to compare lexical ordering of keys for non-existence proofs.

Trait Implementations§

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impl Clone for ProofSpec

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fn clone(&self) -> ProofSpec

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for ProofSpec

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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 Default for ProofSpec

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl<'de> Deserialize<'de> for ProofSpec

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fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl Message for ProofSpec

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fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.
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fn clear(&mut self)

Clears the message, resetting all fields to their default.
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fn encode<B>(&self, buf: &mut B) -> Result<(), EncodeError>
where B: BufMut, Self: Sized,

Encodes the message to a buffer. Read more
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fn encode_to_vec(&self) -> Vec<u8>
where Self: Sized,

Encodes the message to a newly allocated buffer.
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fn encode_length_delimited<B>(&self, buf: &mut B) -> Result<(), EncodeError>
where B: BufMut, Self: Sized,

Encodes the message with a length-delimiter to a buffer. Read more
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fn encode_length_delimited_to_vec(&self) -> Vec<u8>
where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.
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fn decode<B>(buf: B) -> Result<Self, DecodeError>
where B: Buf, Self: Default,

Decodes an instance of the message from a buffer. Read more
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fn decode_length_delimited<B>(buf: B) -> Result<Self, DecodeError>
where B: Buf, Self: Default,

Decodes a length-delimited instance of the message from the buffer.
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fn merge<B>(&mut self, buf: B) -> Result<(), DecodeError>
where B: Buf, Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self. Read more
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fn merge_length_delimited<B>(&mut self, buf: B) -> Result<(), DecodeError>
where B: Buf, Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.
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impl PartialEq for ProofSpec

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

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Serialize for ProofSpec

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl StructuralPartialEq for ProofSpec

Auto Trait Implementations§

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

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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,

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

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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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> Same for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,