mcl

package
v1.1.66 Latest Latest
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 Go to latest Published: Jun 17, 2021 License: GPL-3.0 Imports: 8 Imported by: 0

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Constants

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Variables

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Functions

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Types

type PointG1 

type PointG1 struct {
	*bls.G1
}

PointG1 -

func NewPointG1 

func NewPointG1() *PointG1

NewPointG1 creates a new point on G1 initialized with base point

func (*PointG1) Add 

func (po *PointG1) Add(p crypto.Point) (crypto.Point, error)

Add returns the result of adding receiver with Point p given as parameter, so that their scalars add homomorphically

func (*PointG1) Clone 

func (po *PointG1) Clone() crypto.Point

Clone returns a clone of the receiver.

func (*PointG1) Equal 

func (po *PointG1) Equal(p crypto.Point) (bool, error)

Equal tests if receiver is equal with the Point p given as parameter. Both Points need to be derived from the same Group

func (*PointG1) GetUnderlyingObj 

func (po *PointG1) GetUnderlyingObj() interface{}

GetUnderlyingObj returns the object the implementation wraps

func (*PointG1) IsInterfaceNil 

func (po *PointG1) IsInterfaceNil() bool

IsInterfaceNil returns true if there is no value under the interface

func (*PointG1) MarshalBinary 

func (po *PointG1) MarshalBinary() ([]byte, error)

MarshalBinary converts the point into its byte array representation

func (*PointG1) Mul 

func (po *PointG1) Mul(s crypto.Scalar) (crypto.Point, error)

Mul returns the result of multiplying receiver by the scalarInt s.

func (*PointG1) Neg 

func (po *PointG1) Neg() crypto.Point

Neg returns the negation of receiver

func (*PointG1) Null 

func (po *PointG1) Null() crypto.Point

Null returns the neutral identity element.

func (*PointG1) Pick 

func (po *PointG1) Pick() (crypto.Point, error)

Pick returns a new random or pseudo-random Point.

func (*PointG1) Set 

func (po *PointG1) Set(p crypto.Point) error

Set sets the receiver equal to another Point p.

func (*PointG1) Sub 

func (po *PointG1) Sub(p crypto.Point) (crypto.Point, error)

Sub returns the result of subtracting from receiver the Point p given as parameter, so that their scalars subtract homomorphically

func (*PointG1) UnmarshalBinary 

func (po *PointG1) UnmarshalBinary(point []byte) error

UnmarshalBinary reconstructs a point from its byte array representation

type PointG2 

type PointG2 struct {
	*bls.G2
}

PointG2 -

func NewPointG2 

func NewPointG2() *PointG2

NewPointG2 creates a new point on G2 initialized with base point

func (*PointG2) Add 

func (po *PointG2) Add(p crypto.Point) (crypto.Point, error)

Add returns the result of adding receiver with Point p given as parameter, so that their scalars add homomorphically

func (*PointG2) Clone 

func (po *PointG2) Clone() crypto.Point

Clone returns a clone of the receiver.

func (*PointG2) Equal 

func (po *PointG2) Equal(p crypto.Point) (bool, error)

Equal tests if receiver is equal with the Point p given as parameter. Both Points need to be derived from the same Group

func (*PointG2) GetUnderlyingObj 

func (po *PointG2) GetUnderlyingObj() interface{}

GetUnderlyingObj returns the object the implementation wraps

func (*PointG2) IsInterfaceNil 

func (po *PointG2) IsInterfaceNil() bool

IsInterfaceNil returns true if there is no value under the interface

func (*PointG2) MarshalBinary 

func (po *PointG2) MarshalBinary() ([]byte, error)

MarshalBinary converts the point into its byte array representation

func (*PointG2) Mul 

func (po *PointG2) Mul(s crypto.Scalar) (crypto.Point, error)

Mul returns the result of multiplying receiver by the scalarInt s.

func (*PointG2) Neg 

func (po *PointG2) Neg() crypto.Point

Neg returns the negation of receiver

func (*PointG2) Null 

func (po *PointG2) Null() crypto.Point

Null returns the neutral identity element.

func (*PointG2) Pick 

func (po *PointG2) Pick() (crypto.Point, error)

Pick returns a new random or pseudo-random Point.

func (*PointG2) Set 

func (po *PointG2) Set(p crypto.Point) error

Set sets the receiver equal to another Point p.

func (*PointG2) Sub 

func (po *PointG2) Sub(p crypto.Point) (crypto.Point, error)

Sub returns the result of subtracting from receiver the Point p given as parameter, so that their scalars subtract homomorphically

func (*PointG2) UnmarshalBinary 

func (po *PointG2) UnmarshalBinary(point []byte) error

UnmarshalBinary reconstructs a point from its byte array representation

type PointGT 

type PointGT struct {
	*bls.GT
}

PointGT -

func NewPointGT 

func NewPointGT() *PointGT

NewPointGT creates a new point on GT initialized with identity

func (*PointGT) Add 

func (po *PointGT) Add(p crypto.Point) (crypto.Point, error)

Add returns the result of adding receiver with Point p given as parameter, so that their scalars add homomorphically

func (*PointGT) Clone 

func (po *PointGT) Clone() crypto.Point

Clone returns a clone of the receiver.

func (*PointGT) Equal 

func (po *PointGT) Equal(p crypto.Point) (bool, error)

Equal tests if receiver is equal with the Point p given as parameter. Both Points need to be derived from the same Group

func (*PointGT) GetUnderlyingObj 

func (po *PointGT) GetUnderlyingObj() interface{}

GetUnderlyingObj returns the object the implementation wraps

func (*PointGT) IsInterfaceNil 

func (po *PointGT) IsInterfaceNil() bool

IsInterfaceNil returns true if there is no value under the interface

func (*PointGT) MarshalBinary 

func (po *PointGT) MarshalBinary() ([]byte, error)

MarshalBinary converts the point into its byte array representation

func (*PointGT) Mul 

func (po *PointGT) Mul(s crypto.Scalar) (crypto.Point, error)

Mul returns the result of multiplying receiver by the scalarInt s.

func (*PointGT) Neg 

func (po *PointGT) Neg() crypto.Point

Neg returns the negation of receiver

func (*PointGT) Null 

func (po *PointGT) Null() crypto.Point

Null returns the neutral identity element.

func (*PointGT) Pick 

func (po *PointGT) Pick() (crypto.Point, error)

Pick returns a new random or pseudo-random Point.

func (*PointGT) Set 

func (po *PointGT) Set(p crypto.Point) error

Set sets the receiver equal to another Point p.

func (*PointGT) Sub 

func (po *PointGT) Sub(p crypto.Point) (crypto.Point, error)

Sub returns the result of subtracting from receiver the Point p given as parameter, so that their scalars subtract homomorphically

func (*PointGT) UnmarshalBinary 

func (po *PointGT) UnmarshalBinary(point []byte) error

UnmarshalBinary reconstructs a point from its byte array representation

type Scalar 

type Scalar struct {
	Scalar *bls.Fr
}

Scalar -

func NewScalar 

func NewScalar() *Scalar

NewScalar creates a scalar instance

func (*Scalar) Add 

func (sc *Scalar) Add(s crypto.Scalar) (crypto.Scalar, error)

Add returns the modular sum of receiver with scalarInt s given as parameter

func (*Scalar) Clone 

func (sc *Scalar) Clone() crypto.Scalar

Clone creates a new Scalar with same value as receiver

func (*Scalar) Div 

func (sc *Scalar) Div(s crypto.Scalar) (crypto.Scalar, error)

Div returns the modular division between receiver and scalarInt s given as parameter

func (*Scalar) Equal 

func (sc *Scalar) Equal(s crypto.Scalar) (bool, error)

Equal tests if receiver is equal with the scalarInt s given as parameter. Both scalars need to be derived from the same Group

func (*Scalar) GetUnderlyingObj 

func (sc *Scalar) GetUnderlyingObj() interface{}

GetUnderlyingObj returns the object the implementation wraps

func (*Scalar) Inv 

func (sc *Scalar) Inv(s crypto.Scalar) (crypto.Scalar, error)

Inv returns the modular inverse of scalarInt s given as parameter

func (*Scalar) IsInterfaceNil 

func (sc *Scalar) IsInterfaceNil() bool

IsInterfaceNil returns true if there is no value under the interface

func (*Scalar) MarshalBinary 

func (sc *Scalar) MarshalBinary() ([]byte, error)

MarshalBinary encodes the receiver into a binary form and returns the result.

func (*Scalar) Mul 

func (sc *Scalar) Mul(s crypto.Scalar) (crypto.Scalar, error)

Mul returns the modular product of receiver with scalarInt s given as parameter

func (*Scalar) Neg 

func (sc *Scalar) Neg() crypto.Scalar

Neg returns the modular negation of receiver

func (*Scalar) One 

func (sc *Scalar) One() crypto.Scalar

One sets the receiver to the multiplicative identity (1)

func (*Scalar) Pick 

func (sc *Scalar) Pick() (crypto.Scalar, error)

Pick returns a fresh random or pseudo-random scalarInt

func (*Scalar) Set 

func (sc *Scalar) Set(s crypto.Scalar) error

Set sets the receiver to Scalar s given as parameter

func (*Scalar) SetBytes 

func (sc *Scalar) SetBytes(s []byte) (crypto.Scalar, error)

SetBytes sets the scalarInt from a byte-slice, reducing if necessary to the appropriate modulus.

func (*Scalar) SetInt64 

func (sc *Scalar) SetInt64(v int64)

SetInt64 sets the receiver to a small integer value v given as parameter

func (*Scalar) Sub 

func (sc *Scalar) Sub(s crypto.Scalar) (crypto.Scalar, error)

Sub returns the modular difference between receiver and scalarInt s given as parameter

func (*Scalar) UnmarshalBinary 

func (sc *Scalar) UnmarshalBinary(s []byte) error

UnmarshalBinary decodes a scalarInt from its byte array representation and sets the receiver to this value

func (*Scalar) Zero 

func (sc *Scalar) Zero() crypto.Scalar

Zero returns the the additive identity (0)

type SuiteBLS12 

type SuiteBLS12 struct {
	G1 *groupG1
	G2 *groupG2
	GT *groupGT
	// contains filtered or unexported fields
}

SuiteBLS12 provides an implementation of the Suite interface for BLS12-381

func NewSuiteBLS12 

func NewSuiteBLS12() *SuiteBLS12

NewSuiteBLS12 returns a wrapper over a BLS12 curve.

func (*SuiteBLS12) CheckPointValid 

func (s *SuiteBLS12) CheckPointValid(pointBytes []byte) error

CheckPointValid returns error if the point is not valid (zero is also not valid), otherwise nil

func (*SuiteBLS12) CreateKeyPair 

func (s *SuiteBLS12) CreateKeyPair() (crypto.Scalar, crypto.Point)

CreateKeyPair returns a pair of private public BLS keys. The private key is a scalarInt, while the public key is a Point on G2 curve

func (*SuiteBLS12) CreatePoint 

func (s *SuiteBLS12) CreatePoint() crypto.Point

CreatePoint creates a new point

func (*SuiteBLS12) CreatePointForScalar 

func (s *SuiteBLS12) CreatePointForScalar(scalar crypto.Scalar) (crypto.Point, error)

CreatePointForScalar creates a new point corresponding to the given scalar

func (*SuiteBLS12) CreateScalar 

func (s *SuiteBLS12) CreateScalar() crypto.Scalar

CreateScalar creates a new Scalar

func (*SuiteBLS12) GetUnderlyingSuite 

func (s *SuiteBLS12) GetUnderlyingSuite() interface{}

GetUnderlyingSuite returns the underlying suite

func (*SuiteBLS12) IsInterfaceNil 

func (s *SuiteBLS12) IsInterfaceNil() bool

IsInterfaceNil returns true if there is no value under the interface

func (*SuiteBLS12) PointLen 

func (s *SuiteBLS12) PointLen() int

PointLen returns the max length of point in nb of bytes

func (*SuiteBLS12) RandomStream 

func (s *SuiteBLS12) RandomStream() cipher.Stream

RandomStream returns a cipher.Stream that returns a key stream from crypto/rand.

func (*SuiteBLS12) ScalarLen 

func (s *SuiteBLS12) ScalarLen() int

ScalarLen returns the maximum length of scalars in bytes

func (*SuiteBLS12) String 

func (s *SuiteBLS12) String() string

String returns the string for the group

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