Struct ibc_proto::ics23::ExistenceProof
source · [−]pub struct ExistenceProof {
pub key: Vec<u8>,
pub value: Vec<u8>,
pub leaf: Option<LeafOp>,
pub path: Vec<InnerOp>,
}
Expand description
ExistenceProof takes a key and a value and a set of steps to perform on it. The result of peforming all these steps will provide a “root hash”, which can be compared to the value in a header.
Since it is computationally infeasible to produce a hash collission for any of the used cryptographic hash functions, if someone can provide a series of operations to transform a given key and value into a root hash that matches some trusted root, these key and values must be in the referenced merkle tree.
The only possible issue is maliablity in LeafOp, such as providing extra prefix data, which should be controlled by a spec. Eg. with lengthOp as NONE, prefix = FOO, key = BAR, value = CHOICE and prefix = F, key = OOBAR, value = CHOICE would produce the same value.
With LengthOp this is tricker but not impossible. Which is why the “leafPrefixEqual” field in the ProofSpec is valuable to prevent this mutability. And why all trees should length-prefix the data before hashing it.
Fields
key: Vec<u8>
value: Vec<u8>
leaf: Option<LeafOp>
path: Vec<InnerOp>
Trait Implementations
sourceimpl Clone for ExistenceProof
impl Clone for ExistenceProof
sourcefn clone(&self) -> ExistenceProof
fn clone(&self) -> ExistenceProof
1.0.0 · sourceconst fn clone_from(&mut self, source: &Self)
const fn clone_from(&mut self, source: &Self)
source
. Read moresourceimpl Debug for ExistenceProof
impl Debug for ExistenceProof
sourceimpl Default for ExistenceProof
impl Default for ExistenceProof
sourceimpl<'de> Deserialize<'de> for ExistenceProof
impl<'de> Deserialize<'de> for ExistenceProof
sourcefn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where
__D: Deserializer<'de>,
fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where
__D: Deserializer<'de>,
sourceimpl Message for ExistenceProof
impl Message for ExistenceProof
sourcefn encoded_len(&self) -> usize
fn encoded_len(&self) -> usize
sourcefn encode<B>(&self, buf: &mut B) -> Result<(), EncodeError>where
B: BufMut,
fn encode<B>(&self, buf: &mut B) -> Result<(), EncodeError>where
B: BufMut,
sourcefn encode_to_vec(&self) -> Vec<u8, Global>ⓘNotable traits for Vec<u8, A>impl<A> Write for Vec<u8, A>where
A: Allocator,
fn encode_to_vec(&self) -> Vec<u8, Global>ⓘNotable traits for Vec<u8, A>impl<A> Write for Vec<u8, A>where
A: Allocator,
A: Allocator,
sourcefn encode_length_delimited<B>(&self, buf: &mut B) -> Result<(), EncodeError>where
B: BufMut,
fn encode_length_delimited<B>(&self, buf: &mut B) -> Result<(), EncodeError>where
B: BufMut,
sourcefn encode_length_delimited_to_vec(&self) -> Vec<u8, Global>ⓘNotable traits for Vec<u8, A>impl<A> Write for Vec<u8, A>where
A: Allocator,
fn encode_length_delimited_to_vec(&self) -> Vec<u8, Global>ⓘNotable traits for Vec<u8, A>impl<A> Write for Vec<u8, A>where
A: Allocator,
A: Allocator,
sourcefn decode<B>(buf: B) -> Result<Self, DecodeError>where
B: Buf,
Self: Default,
fn decode<B>(buf: B) -> Result<Self, DecodeError>where
B: Buf,
Self: Default,
sourcefn decode_length_delimited<B>(buf: B) -> Result<Self, DecodeError>where
B: Buf,
Self: Default,
fn decode_length_delimited<B>(buf: B) -> Result<Self, DecodeError>where
B: Buf,
Self: Default,
sourcefn merge<B>(&mut self, buf: B) -> Result<(), DecodeError>where
B: Buf,
fn merge<B>(&mut self, buf: B) -> Result<(), DecodeError>where
B: Buf,
self
. Read moresourcefn merge_length_delimited<B>(&mut self, buf: B) -> Result<(), DecodeError>where
B: Buf,
fn merge_length_delimited<B>(&mut self, buf: B) -> Result<(), DecodeError>where
B: Buf,
self
. Read moresourceimpl PartialEq<ExistenceProof> for ExistenceProof
impl PartialEq<ExistenceProof> for ExistenceProof
sourcefn eq(&self, other: &ExistenceProof) -> bool
fn eq(&self, other: &ExistenceProof) -> bool
sourceimpl Serialize for ExistenceProof
impl Serialize for ExistenceProof
impl StructuralPartialEq for ExistenceProof
Auto Trait Implementations
impl RefUnwindSafe for ExistenceProof
impl Send for ExistenceProof
impl Sync for ExistenceProof
impl Unpin for ExistenceProof
impl UnwindSafe for ExistenceProof
Blanket Implementations
sourceimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
sourceimpl<T> Instrument for T
impl<T> Instrument for T
sourcefn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
sourcefn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
sourceimpl<T> IntoRequest<T> for T
impl<T> IntoRequest<T> for T
sourcefn into_request(self) -> Request<T>
fn into_request(self) -> Request<T>
T
in a tonic::Request