utils

package
v0.0.0-...-7a7f204 Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Oct 19, 2024 License: GPL-3.0 Imports: 25 Imported by: 0

Documentation

Index

Constants

This section is empty.

Variables

View Source 
var SeedMatrixA = [aes.BlockSize]byte{19, 177, 222, 148, 155, 239, 159, 227, 155, 99, 246, 214, 220, 162, 30, 66}

WARNING: DO NOT USE THESE KEYS IN PRODUCTION!

View Source 
var ServerCertificates []tls.Certificate

ServerCertificates holds the certificates for the servers

View Source 
var ServerPublicKeys = [...]string{
	`-----BEGIN CERTIFICATE-----
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lmY=
-----END CERTIFICATE-----`,

	`-----BEGIN CERTIFICATE-----
MIIDXzCCAcegAwIBAgIRAK1HOSv/5MtDaGYz9ScwHswwDQYJKoZIhvcNAQELBQAw
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jQpX
-----END CERTIFICATE-----`,

	`-----BEGIN CERTIFICATE-----
MIIDXzCCAcegAwIBAgIRAL7Kujfh274p7iv0rllHiqQwDQYJKoZIhvcNAQELBQAw
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InbLWsYFCAeXiD6wWTiru3BQs16lTzBeuYw8DfKZbRsLD0dOWwBo+FvbkPgxz3Ln
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-----END CERTIFICATE-----`,

	`-----BEGIN CERTIFICATE-----
MIIDXjCCAcagAwIBAgIQJNaBt8xAofmLgfFk3xddDTANBgkqhkiG9w0BAQsFADBl
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bG9tQGRlZGlzcGMwWTATBgcqhkjOPQIBBggqhkjOPQMBBwNCAASCjnCXs0D3Gw3+
iRHeU5b/RwlzIPiDdR3yDtziPzNMY8tZBE3fRxFiPtHycIO6Yh4OBqJKfUgzackl
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yP7cuOtf5BMJyJmsWQSQTOsUKYIlFKayjuekXmWqqsyHXNofZQbtaVAc7VZK0Lu5
TTI=
-----END CERTIFICATE-----`,

	`-----BEGIN CERTIFICATE-----
MIIDXjCCAcagAwIBAgIQYPUJQnLRjscwiKPt7XRlgDANBgkqhkiG9w0BAQsFADBl
MR4wHAYDVQQKExVta2NlcnQgZGV2ZWxvcG1lbnQgQ0ExHTAbBgNVBAsMFHNtc2Nv
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YWxob3N0hwR/AAABhxAAAAAAAAAAAAAAAAAAAAABMA0GCSqGSIb3DQEBCwUAA4IB
gQCPvIGz+sU6EE08rrI+hjjEVTijw2NoJOeKp+5YlUtD1k6tEAaYd4ULzI2vTpXN
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KQPTGlp0i+G5sEwqPbjT0FTmXDNEYZx4fykmiBEDe27Tyjsx3LSXXgJjk5gSx0kE
pPY=
-----END CERTIFICATE-----`,
}

Functions

func ByteSliceToUint32Slice 

func ByteSliceToUint32Slice(in []byte) []uint32

func ByteToBits 

func ByteToBits(data []byte) []bool

func GaussSample 

func GaussSample() int64

The function below is modeled on Martin Albrecht's discrete-Gaussian sampler included in his dgs library: 

https://github.com/malb/dgs

func IncreaseToNextSquare 

func IncreaseToNextSquare(num *int)

Increase num to the next perfect square. If the square root is a whole number, do not modify anything. Otherwise, return the square of the square root + 1.

func LoadServersCertificates 

func LoadServersCertificates() (credentials.TransportCredentials, error)

func MathRand 

func MathRand() *mrand.Rand

func MaxBytesLength 

func MaxBytesLength(in map[int][]byte) int

MaxBytesLength get maximal []byte length in map[int][]byte

func RandInt 

func RandInt(mod *big.Int) *big.Int

Produce a random integer in Z_p where mod is the value p.

func Randate 

func Randate() time.Time

source: https://stackoverflow.com/questions/43495745/how-to-generate-random-date-in-go-lang/43497333 this is probably biased, but we don't care since it is only for tests

func Ranstring 

func Ranstring(n int) string

func StartBlockProfiling 

func StartBlockProfiling(filename string)

func StartMemProfiling 

func StartMemProfiling(filename string)

func StartProfiling 

func StartProfiling(filename string)

func StopProfiling 

func StopProfiling()

func Uint32SliceToByteSlice 

func Uint32SliceToByteSlice(in []uint32) []byte

func VectorToMatrixIndices 

func VectorToMatrixIndices(i, numColumns int) (int, int)

Given a vector index returns the indices for the matrix representation of the vector

Types

type BufPRGReader 

type BufPRGReader struct {
	mrand.Source64
	Key PRGKey
	// contains filtered or unexported fields
}

func NewBufPRG 

func NewBufPRG(prg *PRGReader) *BufPRGReader

func (*BufPRGReader) Int63 

func (b *BufPRGReader) Int63() int64

func (*BufPRGReader) RandInt 

func (b *BufPRGReader) RandInt(mod *big.Int) *big.Int

func (*BufPRGReader) Seed 

func (b *BufPRGReader) Seed(int64)

func (*BufPRGReader) Uint64 

func (b *BufPRGReader) Uint64() uint64

type Config 

type Config struct {
	Servers map[string]Server

	Addresses []string
}

func LoadConfig 

func LoadConfig(configFile string) (*Config, error)

type PRGKey 

type PRGKey [aes.BlockSize]byte

func GetDefaultSeedMatrixA 

func GetDefaultSeedMatrixA() *PRGKey

func RandomPRGKey 

func RandomPRGKey() *PRGKey

type PRGReader 

type PRGReader struct {
	Key PRGKey
	// contains filtered or unexported fields
}

We use the AES-CTR to generate pseudo-random numbers using a stream cipher. Go's native rand.Reader is extremely slow because it makes tons of system calls to generate a small number of pseudo-random bytes.

We pay the overhead of using a sync.Mutex to synchronize calls to AES-CTR, but this is relatively cheap.

func NewPRG 

func NewPRG(key *PRGKey) *PRGReader

func RandomPRG 

func RandomPRG() *PRGReader

func (*PRGReader) Read 

func (s *PRGReader) Read(p []byte) (int, error)

type ParamsLWE 

type ParamsLWE struct {
	P     uint32  // plaintext modulus
	N     int     // lattice/secret dimension
	Sigma float64 // Error parameter

	L int    // number of rows of database
	M int    // number of columns of database
	B uint32 // bound used in reconstruction

	SeedA    *PRGKey // matrix  used to generate digest
	BytesMod int     // bytes of the modulo
}

func ParamsDefault 

func ParamsDefault() *ParamsLWE

func ParamsDefault128 

func ParamsDefault128() *ParamsLWE

func ParamsWithDatabaseSize 

func ParamsWithDatabaseSize(rows, columns int) *ParamsLWE

func ParamsWithDatabaseSize128 

func ParamsWithDatabaseSize128(rows, columns int) *ParamsLWE

type Server 

type Server struct {
	Index int
	IP    string
	Port  int
}

Source Files

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