cs

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 Go to latest Published: Mar 25, 2023 License: Apache-2.0 Imports: 24 Imported by: 0

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Constants

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Variables

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Functions

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Types

type CoeffTable 

type CoeffTable struct {
	Coefficients []fr.Element
	// contains filtered or unexported fields
}

CoeffTable ensure we store unique coefficients in the constraint system

func (*CoeffTable) CoeffToString 

func (ct *CoeffTable) CoeffToString(cID int) string

CoeffToString implements constraint.Resolver

func (*CoeffTable) MakeTerm 

func (ct *CoeffTable) MakeTerm(coeff *constraint.Coeff, variableID int) constraint.Term

type R1CS 

type R1CS struct {
	constraint.R1CSCore
	CoeffTable
	// contains filtered or unexported fields
}

R1CS describes a set of R1CS constraint

func NewR1CS 

func NewR1CS(capacity int) *R1CS

NewR1CS returns a new R1CS and sets cs.Coefficient (fr.Element) from provided big.Int values

capacity pre-allocates memory for capacity nbConstraints

func (*R1CS) Add 

func (engine *R1CS) Add(a, b *constraint.Coeff)

func (*R1CS) AddConstraint 

func (cs *R1CS) AddConstraint(r1c constraint.R1C, debugInfo ...constraint.DebugInfo) int

func (*R1CS) CurveID 

func (cs *R1CS) CurveID() ecc.ID

CurveID returns curve ID as defined in gnark-crypto

func (*R1CS) FromInterface 

func (engine *R1CS) FromInterface(i interface{}) constraint.Coeff

func (*R1CS) GetConstraints 

func (cs *R1CS) GetConstraints() ([]constraint.R1C, constraint.Resolver)

GetConstraints return the list of R1C and a coefficient resolver

func (*R1CS) GetNbCoefficients 

func (cs *R1CS) GetNbCoefficients() int

GetNbCoefficients return the number of unique coefficients needed in the R1CS

func (*R1CS) Inverse 

func (engine *R1CS) Inverse(a *constraint.Coeff)

func (*R1CS) IsOne 

func (engine *R1CS) IsOne(a *constraint.Coeff) bool

func (*R1CS) IsSolved 

func (cs *R1CS) IsSolved(witness witness.Witness, opts ...backend.ProverOption) error

IsSolved returns nil if given witness solves the R1CS and error otherwise this method wraps cs.Solve() and allocates cs.Solve() inputs

func (*R1CS) Mul 

func (engine *R1CS) Mul(a, b *constraint.Coeff)

func (*R1CS) Neg 

func (engine *R1CS) Neg(a *constraint.Coeff)

func (*R1CS) One 

func (engine *R1CS) One() constraint.Coeff

func (*R1CS) ReadFrom 

func (cs *R1CS) ReadFrom(r io.Reader) (int64, error)

ReadFrom attempts to decode R1CS from io.Reader using cbor

func (*R1CS) Solve 

func (cs *R1CS) Solve(witness, a, b, c fr.Vector, opt backend.ProverConfig) (fr.Vector, error)

Solve sets all the wires and returns the a, b, c vectors. the cs system should have been compiled before. The entries in a, b, c are in Montgomery form. a, b, c vectors: ab-c = hz witness = [publicWires | secretWires] (without the ONE_WIRE !) returns [publicWires | secretWires | internalWires ]

func (*R1CS) String 

func (engine *R1CS) String(a *constraint.Coeff) string

func (*R1CS) Sub 

func (engine *R1CS) Sub(a, b *constraint.Coeff)

func (*R1CS) ToBigInt 

func (engine *R1CS) ToBigInt(c *constraint.Coeff) *big.Int

func (*R1CS) WriteTo 

func (cs *R1CS) WriteTo(w io.Writer) (int64, error)

WriteTo encodes R1CS into provided io.Writer using cbor

type SparseR1CS 

type SparseR1CS struct {
	constraint.SparseR1CSCore
	CoeffTable
	// contains filtered or unexported fields
}

SparseR1CS represents a Plonk like circuit

func NewSparseR1CS 

func NewSparseR1CS(capacity int) *SparseR1CS

NewSparseR1CS returns a new SparseR1CS and sets r1cs.Coefficient (fr.Element) from provided big.Int values

func (*SparseR1CS) Add 

func (engine *SparseR1CS) Add(a, b *constraint.Coeff)

func (*SparseR1CS) AddConstraint 

func (cs *SparseR1CS) AddConstraint(c constraint.SparseR1C, debugInfo ...constraint.DebugInfo) int

func (*SparseR1CS) CurveID 

func (cs *SparseR1CS) CurveID() ecc.ID

CurveID returns curve ID as defined in gnark-crypto (ecc.BN254)

func (*SparseR1CS) FromInterface 

func (engine *SparseR1CS) FromInterface(i interface{}) constraint.Coeff

func (*SparseR1CS) GetConstraints 

func (cs *SparseR1CS) GetConstraints() ([]constraint.SparseR1C, constraint.Resolver)

GetConstraints return the list of SparseR1C and a coefficient resolver

func (*SparseR1CS) GetNbCoefficients 

func (cs *SparseR1CS) GetNbCoefficients() int

GetNbCoefficients return the number of unique coefficients needed in the R1CS

func (*SparseR1CS) Inverse 

func (engine *SparseR1CS) Inverse(a *constraint.Coeff)

func (*SparseR1CS) IsOne 

func (engine *SparseR1CS) IsOne(a *constraint.Coeff) bool

func (*SparseR1CS) IsSolved 

func (cs *SparseR1CS) IsSolved(witness witness.Witness, opts ...backend.ProverOption) error

IsSolved returns nil if given witness solves the SparseR1CS and error otherwise this method wraps cs.Solve() and allocates cs.Solve() inputs

func (*SparseR1CS) Mul 

func (engine *SparseR1CS) Mul(a, b *constraint.Coeff)

func (*SparseR1CS) Neg 

func (engine *SparseR1CS) Neg(a *constraint.Coeff)

func (*SparseR1CS) One 

func (engine *SparseR1CS) One() constraint.Coeff

func (*SparseR1CS) ReadFrom 

func (cs *SparseR1CS) ReadFrom(r io.Reader) (int64, error)

ReadFrom attempts to decode SparseR1CS from io.Reader using cbor

func (*SparseR1CS) Solve 

func (cs *SparseR1CS) Solve(witness fr.Vector, opt backend.ProverConfig) (fr.Vector, error)

Solve sets all the wires. solution.values = [publicInputs | secretInputs | internalVariables ] witness: contains the input variables it returns the full slice of wires

func (*SparseR1CS) String 

func (engine *SparseR1CS) String(a *constraint.Coeff) string

func (*SparseR1CS) Sub 

func (engine *SparseR1CS) Sub(a, b *constraint.Coeff)

func (*SparseR1CS) ToBigInt 

func (engine *SparseR1CS) ToBigInt(c *constraint.Coeff) *big.Int

func (*SparseR1CS) WriteTo 

func (cs *SparseR1CS) WriteTo(w io.Writer) (int64, error)

WriteTo encodes SparseR1CS into provided io.Writer using cbor

type UnsatisfiedConstraintError 

type UnsatisfiedConstraintError struct {
	Err       error
	CID       int     // constraint ID
	DebugInfo *string // optional debug info
}

UnsatisfiedConstraintError wraps an error with useful metadata on the unsatisfied constraint

func (*UnsatisfiedConstraintError) Error 

func (r *UnsatisfiedConstraintError) Error() string

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