Struct sp_core::bandersnatch::vrf::VrfSignData
source · pub struct VrfSignData {
pub transcript: Transcript,
pub inputs: VrfIosVec<VrfInput>,
}
Expand description
Data to be signed via one of the two provided vrf flavors.
The object contains a transcript and a sequence of VrfInput
s ready to be signed.
The transcript
summarizes a set of messages which are defining a particular
protocol by automating the Fiat-Shamir transform for challenge generation.
A good explanation of the topic can be found in Merlin docs
The inputs
is a sequence of VrfInput
s which, during the signing procedure, are
first transformed to VrfPreOutput
s. Both inputs and pre-outputs are then appended to
the transcript before signing the Fiat-Shamir transform result (the challenge).
In practice, as a user, all these technical details can be easily ignored. What is important to remember is:
- Transcript is an object defining the protocol and used to produce the signature. This
object doesn’t influence the
VrfPreOutput
s values. - Vrf inputs is some additional data which is used to produce vrf pre-outputs. This data will contribute to the signature as well.
Fields§
§transcript: Transcript
Associated protocol transcript.
inputs: VrfIosVec<VrfInput>
VRF inputs to be signed.
Implementations§
source§impl VrfSignData
impl VrfSignData
sourcepub fn new(
transcript_label: &'static [u8],
transcript_data: impl IntoIterator<Item = impl AsRef<[u8]>>,
inputs: impl IntoIterator<Item = VrfInput>
) -> Result<Self, ()>
pub fn new( transcript_label: &'static [u8], transcript_data: impl IntoIterator<Item = impl AsRef<[u8]>>, inputs: impl IntoIterator<Item = VrfInput> ) -> Result<Self, ()>
Construct a new data to be signed.
Fails if the inputs
iterator yields more elements than MAX_VRF_IOS
Refer to VrfSignData
for details about transcript and inputs.
sourcepub fn new_unchecked(
transcript_label: &'static [u8],
transcript_data: impl IntoIterator<Item = impl AsRef<[u8]>>,
inputs: impl IntoIterator<Item = VrfInput>
) -> Self
pub fn new_unchecked( transcript_label: &'static [u8], transcript_data: impl IntoIterator<Item = impl AsRef<[u8]>>, inputs: impl IntoIterator<Item = VrfInput> ) -> Self
Construct a new data to be signed.
At most the first MAX_VRF_IOS
elements of inputs
are used.
Refer to VrfSignData
for details about transcript and inputs.
sourcepub fn push_transcript_data(&mut self, data: &[u8])
pub fn push_transcript_data(&mut self, data: &[u8])
Append a message to the transcript.
Trait Implementations§
source§impl Clone for VrfSignData
impl Clone for VrfSignData
source§fn clone(&self) -> VrfSignData
fn clone(&self) -> VrfSignData
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moreAuto Trait Implementations§
impl RefUnwindSafe for VrfSignData
impl Send for VrfSignData
impl Sync for VrfSignData
impl Unpin for VrfSignData
impl UnwindSafe for VrfSignData
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