crypto

package
v0.1.0 Latest Latest
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 Go to latest Published: Nov 25, 2024 License: Apache-2.0 Imports: 23 Imported by: 0

Documentation

Index

Constants

This section is empty.

Variables

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var SideLeft = false
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var SideRight = true

Functions

func Add 

func Add(cryptoParams *CryptoParams, ct1 *ckks.Ciphertext, ct2 *ckks.Ciphertext) *ckks.Ciphertext

func AddConst 

func AddConst(cryptoParams *CryptoParams, ct *ckks.Ciphertext, constant interface{}) *ckks.Ciphertext

func AddPlain 

func AddPlain(cryptoParams *CryptoParams, ct1 *ckks.Ciphertext, ct2 *ckks.Plaintext) *ckks.Ciphertext

func AggregateSumMask 

func AggregateSumMask(cryptoParams *CryptoParams, vals []*ckks.Ciphertext) *ckks.Ciphertext

AggregateSumMask sums across parties

func ConvertVectorComplexToFloat64 

func ConvertVectorComplexToFloat64(v []complex128) []float64

ConvertVectorComplexToFloat64 converts an array of complex to float

func ConvertVectorFloat64ToComplex 

func ConvertVectorFloat64ToComplex(v []float64) []complex128

ConvertVectorFloat64ToComplex converts an array of floats to complex

func DecodeFloatVector 

func DecodeFloatVector(cryptoParams *CryptoParams, fEncoded PlainVector) []float64

DecodeFloatVector decodes a slice of plaintext values in multiple float64 values.

func DecryptFloat 

func DecryptFloat(cryptoParams *CryptoParams, cipher *ckks.Ciphertext) float64

DecryptFloat decrypts a ciphertext with one float64 value.

func DecryptFloatMatrix 

func DecryptFloatMatrix(cryptoParams *CryptoParams, matrixEnc []CipherVector, d int) [][]float64

DecryptFloatMatrix decrypts a matrix (kind of) of multiple packed ciphertexts. For this specific matrix decryption each row is encrypted in a set of ciphertexts. d is the number of column values

func DecryptFloatVector 

func DecryptFloatVector(cryptoParams *CryptoParams, fEnc CipherVector, N int) []float64

DecryptFloatVector decrypts multiple batched ciphertexts with N float64 values and appends all data into one single float vector. If nbrEl<=0 it decrypts everything without caring about the number of encrypted values. If nbrEl>0 the function returns N elements from the decryption.

func DecryptMultipleFloat 

func DecryptMultipleFloat(cryptoParams *CryptoParams, cipher *ckks.Ciphertext, nbrEl int) []float64

DecryptMultipleFloat decrypts a ciphertext with multiple float64 values. If nbrEl<=0 it decrypts everything without caring about the number of encrypted values. If nbrEl>0 the function returns N elements from the decryption.

func EncryptFloat 

func EncryptFloat(cryptoParams *CryptoParams, num float64) *ckks.Ciphertext

EncryptFloat encrypts one float64 value.

func FindClosestPow2 

func FindClosestPow2(n int) int

FindClosestPow2 finds the closest power of 2 bigger than a number n

func GetCTsize 

func GetCTsize(vecsize, ctind, slots int) int

Ciphertext operations

func GlobalToPartyIndex 

func GlobalToPartyIndex(cryptoParams *CryptoParams, Arowdims []int, col, nparty int) (int, int, int)

func InnerProd 

func InnerProd(cryptoParams *CryptoParams, X, Y CipherVector) *ckks.Ciphertext

func InnerSum 

func InnerSum(cryptoParams *CryptoParams, X CipherVector, Xsize int) *ckks.Ciphertext

func InnerSumAll 

func InnerSumAll(cryptoParams *CryptoParams, X CipherVector) *ckks.Ciphertext

func InvApprox 

func InvApprox(cryptoParams *CryptoParams, ctIn *ckks.Ciphertext, intv IntervalApprox) *ckks.Ciphertext

InvApprox computes an encrypted approximated version of the inverse function

func InvSqrtApprox 

func InvSqrtApprox(cryptoParams *CryptoParams, ctIn *ckks.Ciphertext, intv IntervalApprox) *ckks.Ciphertext

InvSqrtApprox computes an encrypted approximated version of the inverse function

func MarshalCM 

func MarshalCM(cm CipherMatrix) ([]byte, []byte)

MarshalCiphermatrix returns byte array corresponding to ciphertext sizes (int array) and byte array corresponding to marshaling

func Mask 

func Mask(cryptoParams *CryptoParams, ct *ckks.Ciphertext, index int, keepRest bool) *ckks.Ciphertext

func MaskTrunc 

func MaskTrunc(cryptoParams *CryptoParams, ct *ckks.Ciphertext, N int) *ckks.Ciphertext

Retain only the first N slots TODO is there a way to do this without consuming a level?

func MaskWithScaling 

func MaskWithScaling(cryptoParams *CryptoParams, ct *ckks.Ciphertext, ind int, keep bool, scalingFactor float64) *ckks.Ciphertext

func Max 

func Max(x, y int) int

func Min 

func Min(a int, b int) int

func Mod 

func Mod(n int, modulus int) int

func Mult 

func Mult(cryptoParams *CryptoParams, ct1 *ckks.Ciphertext, ct2 *ckks.Ciphertext) *ckks.Ciphertext

func PadVector 

func PadVector(v []float64, slots int) []float64

PadVector pads the vector with 0's before encoding/encryption

func PlaintextToDense 

func PlaintextToDense(cryptoParams *CryptoParams, pt PlainMatrix, ptVecSize int) *mat.Dense

Takes PlaintextMatrix and returns a denseMatrix: if col is true (ie pt is a column encoded matrix, then we transpose)

func Rebalance 

func Rebalance(cryptoParams *CryptoParams, ct *ckks.Ciphertext) *ckks.Ciphertext

func RotateAndAdd 

func RotateAndAdd(cryptoParams *CryptoParams, ct *ckks.Ciphertext, size int) *ckks.Ciphertext

RotateAndAdd computes the inner sum of a Ciphertext

func RotateAndPlace 

func RotateAndPlace(cryptoParams *CryptoParams, ct *ckks.Ciphertext, size, place int, duplicate bool) *ckks.Ciphertext

RotateAndPlace rotates ct to the right by shift = place

func RotateRight 

func RotateRight(cryptoParams *CryptoParams, ct *ckks.Ciphertext, nrot int) *ckks.Ciphertext

func RotateRightWithEvaluator 

func RotateRightWithEvaluator(cryptoParams *CryptoParams, ct *ckks.Ciphertext, nrot int, eva ckks.Evaluator) *ckks.Ciphertext

func SaveCipherMatrixToFile 

func SaveCipherMatrixToFile(cps *CryptoParams, cm CipherMatrix, filename string)

func SqSum 

func SqSum(cryptoParams *CryptoParams, X CipherVector) *ckks.Ciphertext

SqSum evaluates the sum(X^2) across the vector

func Sqrt 

func Sqrt(x complex128) complex128

func SqrtApprox 

func SqrtApprox(cryptoParams *CryptoParams, ctIn *ckks.Ciphertext, intv IntervalApprox) *ckks.Ciphertext

SqrtApprox computes an encrypted approximated version of the inverse function

func Zero 

func Zero(cryptoParams *CryptoParams) *ckks.Ciphertext

Ciphervector operations

Types

type CipherMatrix 

type CipherMatrix []CipherVector

CipherMatrix is a slice of slice of Ciphertexts

func AggregateMat 

func AggregateMat(cryptoParams *CryptoParams, mats []CipherMatrix) CipherMatrix

func CMatRescale 

func CMatRescale(cryptoParams *CryptoParams, X CipherMatrix) CipherMatrix

func CMultConstMat 

func CMultConstMat(cryptoParams *CryptoParams, X CipherMatrix, constant interface{}, inPlace bool) (res CipherMatrix)

func CZeroMat 

func CZeroMat(cryptoParams *CryptoParams, nrows, ncols int) CipherMatrix

column based

func ConcatCipherMatrix 

func ConcatCipherMatrix(mats []CipherMatrix) CipherMatrix

func DCopyEncrypted 

func DCopyEncrypted(A []CipherMatrix) []CipherMatrix

DCopyEncrypted returns a shallow? copy of A?

func DropLevel 

func DropLevel(cryptoParams *CryptoParams, A CipherMatrix, outLevel int) CipherMatrix

func DummyBootstrapMatrix 

func DummyBootstrapMatrix(cryptoParams *CryptoParams, Ap CipherMatrix) CipherMatrix

func EncryptDense 

func EncryptDense(cryptoParams *CryptoParams, vals *mat.Dense) CipherMatrix

func EncryptFloatMatrixRow 

func EncryptFloatMatrixRow(cryptoParams *CryptoParams, matrix [][]float64) (CipherMatrix, int, int, error)

EncryptFloatMatrixRow encrypts a matrix of float64 to multiple packed ciphertexts. For this specific matrix encryption each row is encrypted in a set of ciphertexts.

func EncryptPlaintextMatrix 

func EncryptPlaintextMatrix(cryptoParams *CryptoParams, pm PlainMatrix) CipherMatrix

func FlattenLevels 

func FlattenLevels(cryptoParams *CryptoParams, X CipherMatrix) (CipherMatrix, int)

func InitEncryptedMatrix 

func InitEncryptedMatrix(cryptoParams *CryptoParams, dy int, dx int) (CipherMatrix, int, int, error)

Initializes a new encrypted matrix with dy rows and dx columns.

func LevelTestMatrix 

func LevelTestMatrix(ciphers CipherMatrix, cryptoParams *CryptoParams, needed int, serverID, name string) CipherMatrix

func LoadCipherMatrixFromFile 

func LoadCipherMatrixFromFile(cps *CryptoParams, filename string) CipherMatrix

func UnmarshalCM 

func UnmarshalCM(cryptoParams *CryptoParams, r, c int, sbytes, ctbytes []byte) CipherMatrix

MarshalCiphermatrix returns byte array corresponding to ciphertext sizes (int array) and byte array corresponding to marshaling

func (*CipherMatrix) MarshalBinary 

func (cm *CipherMatrix) MarshalBinary() ([]byte, [][]int, error)

func (*CipherMatrix) UnmarshalBinary 

func (cm *CipherMatrix) UnmarshalBinary(cryptoParams *CryptoParams, f []byte, ctSizes [][]int) error

type CipherVector 

type CipherVector []*ckks.Ciphertext

CipherVector is a slice of Ciphertexts

func AggregateVec 

func AggregateVec(cryptoParams *CryptoParams, vecs []CipherVector) CipherVector

func CAdd 

func CAdd(cryptoParams *CryptoParams, X CipherVector, Y CipherVector) CipherVector

func CAddConst 

func CAddConst(cryptoParams *CryptoParams, X CipherVector, constant interface{}) CipherVector

func CInverse 

func CInverse(cryptoParams *CryptoParams, X CipherVector, intv IntervalApprox) CipherVector

func CMask 

func CMask(cryptoParams *CryptoParams, cv CipherVector, index int, keepRest bool) CipherVector

Masks out one or multiple values in a ciphervector.

func CMult 

func CMult(cryptoParams *CryptoParams, X CipherVector, Y CipherVector) CipherVector

func CMultConst 

func CMultConst(cryptoParams *CryptoParams, X CipherVector, constant interface{}, inPlace bool) (res CipherVector)

func CMultConstRescale 

func CMultConstRescale(cryptoParams *CryptoParams, X CipherVector, constant interface{}, inPlace bool) CipherVector

func CMultScalar 

func CMultScalar(cryptoParams *CryptoParams, X CipherVector, ct *ckks.Ciphertext) CipherVector

func CPAdd 

func CPAdd(cryptoParams *CryptoParams, X CipherVector, Y PlainVector) CipherVector

func CPMult 

func CPMult(cryptoParams *CryptoParams, X CipherVector, Y PlainVector) CipherVector

func CPSubOther 

func CPSubOther(cryptoParams *CryptoParams, X PlainVector, Y CipherVector) CipherVector

Subtracts a ciphervector from a plaintext vector.

func CReal 

func CReal(cps *CryptoParams, Z CipherVector) (real CipherVector)

Returns the real component of a CipherVector.

func CRescale 

func CRescale(cryptoParams *CryptoParams, X CipherVector) CipherVector

func CSub 

func CSub(cryptoParams *CryptoParams, X CipherVector, Y CipherVector) CipherVector

func CZeros 

func CZeros(cryptoParams *CryptoParams, n int) CipherVector

func ChebyApproximation 

func ChebyApproximation(cryptoParams *CryptoParams, X CipherVector, cheby *ckks.ChebyshevInterpolation) CipherVector

func ComplexConjugate 

func ComplexConjugate(cryptoParams *CryptoParams, X CipherVector) CipherVector

Returns the complex conjugate of a ciphervector.

func CopyEncryptedMatrix 

func CopyEncryptedMatrix(src []CipherVector) []CipherVector

CopyEncryptedMatrix does a copy of a matrix of ciphertexts to a newly created array

func CopyEncryptedVector 

func CopyEncryptedVector(src CipherVector) CipherVector

CopyEncryptedVector does a copy of an array of ciphertexts to a newly created array

func EncryptFloatVector 

func EncryptFloatVector(cryptoParams *CryptoParams, f []float64) (CipherVector, int)

EncryptFloatVector encrypts a slice of float64 values in multiple batched ciphertexts. and return the number of encrypted elements.

func LevelTest 

func LevelTest(ciphers CipherVector, cryptoParams *CryptoParams, needed int, serverID, name string) CipherVector

func (*CipherVector) DummyBootstrapping 

func (cv *CipherVector) DummyBootstrapping(serverID string, cryptoParams *CryptoParams) CipherVector

DummyBootstrapping mimics the bootstrapping

func (*CipherVector) MarshalBinary 

func (cv *CipherVector) MarshalBinary() ([]byte, []int, error)

func (*CipherVector) UnmarshalBinary 

func (cv *CipherVector) UnmarshalBinary(cryptoParams *CryptoParams, f []byte, fSizes []int) error

UnmarshalBinary -> CipherVector: converts an array of bytes to an array of ciphertexts.

type CryptoParams 

type CryptoParams struct {
	Sk          *ckks.SecretKey
	AggregateSk *ckks.SecretKey
	Pk          *ckks.PublicKey
	Rlk         *ckks.RelinearizationKey
	RotKs       *ckks.RotationKeySet
	Params      *ckks.Parameters
	// contains filtered or unexported fields
}

CryptoParams aggregates all ckks scheme information

func NewCryptoParams 

func NewCryptoParams(params *ckks.Parameters, sk, aggregateSk *ckks.SecretKey, pk *ckks.PublicKey, rlk *ckks.RelinearizationKey, prec uint, numThreads int) *CryptoParams

NewCryptoParams initializes CryptoParams with the given values

func NewCryptoParamsForNetwork 

func NewCryptoParamsForNetwork(params *ckks.Parameters, nbrNodes int, prec uint) []*CryptoParams

NewCryptoParamsForNetwork initializes a set of nbrNodes CryptoParams each containing: keys, encoder, encryptor, decryptor, etc.

func (*CryptoParams) GetPrec 

func (cp *CryptoParams) GetPrec() uint

func (*CryptoParams) GetSlots 

func (cp *CryptoParams) GetSlots() int

GetSlots gets the number of encodable slots (N/2)

func (*CryptoParams) MarshalBinary 

func (cp *CryptoParams) MarshalBinary() ([]byte, error)

MarshalBinary for minimal cryptoParams-keys + params

func (*CryptoParams) SetDecryptors 

func (cp *CryptoParams) SetDecryptors(params *ckks.Parameters, sk *ckks.SecretKey)

SetDecryptors sets the decryptors in the CryptoParams object

func (*CryptoParams) SetEvaluators 

func (cp *CryptoParams) SetEvaluators(params *ckks.Parameters, rlk *ckks.RelinearizationKey, rtks *ckks.RotationKeySet)

func (*CryptoParams) SetRotKeys 

func (cp *CryptoParams) SetRotKeys(nbrRot []RotationType) []int

SetRotKeys sets/adds new rotation keys

func (*CryptoParams) UnmarshalBinary 

func (cp *CryptoParams) UnmarshalBinary(data []byte) error

func (*CryptoParams) WithDecryptor 

func (cp *CryptoParams) WithDecryptor(act func(act ckks.Decryptor) error) error

WithDecryptor run the given function with a decryptor

func (*CryptoParams) WithEncoder 

func (cp *CryptoParams) WithEncoder(act func(ckks.Encoder) error) error

WithEncoder run the given function with an encoder

func (*CryptoParams) WithEncryptor 

func (cp *CryptoParams) WithEncryptor(act func(ckks.Encryptor) error) error

WithEncryptor run the given function with an encryptor

func (*CryptoParams) WithEvaluator 

func (cp *CryptoParams) WithEvaluator(act func(ckks.Evaluator) error) error

WithEvaluator run the given function with an evaluator

type CryptoParamsForNetwork 

type CryptoParamsForNetwork struct {
	// contains filtered or unexported fields
}

CryptoParamsForNetwork stores all crypto info to save to file

type IntervalApprox 

type IntervalApprox struct {
	A          float64
	B          float64
	Degree     int
	Iter       int
	InverseNew bool
}

type PlainMatrix 

type PlainMatrix []PlainVector

PlainMatrix is a slice of slice of Plaintexts

func EncodeDense 

func EncodeDense(cryptoParams *CryptoParams, vals *mat.Dense) PlainMatrix

func EncodeFloatMatrixRow 

func EncodeFloatMatrixRow(cryptoParams *CryptoParams, matrix [][]float64) (PlainMatrix, int, int, error)

EncodeFloatMatrixRow encodes a matrix of float64 to multiple packed plaintexts. For this specific matrix encoding each row is encoded in a set of plaintexts.

type PlainVector 

type PlainVector []*ckks.Plaintext

PlainVector is a slice of Plaintexts

func EncodeFloatVector 

func EncodeFloatVector(cryptoParams *CryptoParams, f []float64) (PlainVector, int)

EncodeFloatVector encodes a slice of float64 values in multiple batched plaintext (ready to be encrypted). It also returns the number of encoded elements.

func EncodeFloatVectorWithScale 

func EncodeFloatVectorWithScale(cryptoParams *CryptoParams, f []float64, scale float64) (PlainVector, int)

EncodeFloatVector encodes a slice of float64 values in multiple batched plaintext (ready to be encrypted). It also returns the number of encoded elements.

type RotationType 

type RotationType struct {
	Value int
	Side  bool
}

RotationType defines how much we should rotate and in which direction

func GenerateRotKeys 

func GenerateRotKeys(slots int, smallDim int, babyFlag bool) []RotationType

Generate rotKeys for power of two shifts up to # of slots and for every shift up to smallDim

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