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stateless: deactivate GetCommitmentsAlongPath #156

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Merged
merged 1 commit into from
Dec 16, 2021
Merged

stateless: deactivate GetCommitmentsAlongPath #156

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31 changes: 1 addition & 30 deletions stateless.go
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Original file line number Diff line number Diff line change
Expand Up @@ -310,36 +310,7 @@ func (n *StatelessNode) ComputeCommitment() *Fr {
}

func (n *StatelessNode) GetCommitmentsAlongPath(key []byte) *ProofElements {
childIdx := offset2key(key, n.depth)

// Build the list of elements for this level
var yi Fr
fi := make([]Fr, NodeWidth)
for i, child := range n.children {
CopyFr(&fi[i], child.ComputeCommitment())

if i == childIdx {
CopyFr(&yi, &fi[i])
}
}

// The proof elements that are to be added at this level
pe := &ProofElements{
Cis: []*Point{n.commitment},
Zis: []uint8{childIdx},
Yis: []*Fr{&yi}, // Should be 0
Fis: [][]Fr{fi},
}

// Special case of a proof of absence: no children
// commitment, as the value is 0.
if n.children[childIdx] == nil {
return pe
}

pec := n.children[childIdx].GetCommitmentsAlongPath(key)
pe.Merge(pec)
return pe
panic("not supported in stateless mode")
}

func (*StatelessNode) Serialize() ([]byte, error) {
Expand Down