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utils

package

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Versions in this module

v1

v1.0.3

Jan 2, 2026

Changes in this version

+ const MaxHashConcatInputSize

v1.0.2

Dec 31, 2025

v1.0.1

Dec 29, 2025

Changes in this version

+ const MaxFactorCount

+ const MaxMatrixElements

+ const MaxMessageSize

+ const MaxPayloadLength

+ const MaxTensorElements

+ const MaxVectorLength

+ const MaxWalkLength

+ var ErrExceedsLimit = errors.New("value exceeds allowed limit")

+ var ErrInvalidLength = errors.New("invalid length")

+ var ErrOverflow = errors.New("integer overflow")

+ func CheckLength(length, maxAllowed int) error

+ func CheckPositive(value int, name string) error

+ func SafeMakeByteSlice(count, maxAllowed int) ([]byte, error)

+ func SafeMakeInt32Slice(count, maxAllowed int) ([]int32, error)

+ func SafeMakeIntSlice(count, maxAllowed int) ([]int, error)

+ func SafeMultiply(a, b int) (int, error)

+ func SafeMultiply3(a, b, c int) (int, error)

+ func SafeReadLength(data []byte, offset, maxAllowed int) (length int, newOffset int, err error)

+ func ValidateSliceAccess(data []byte, offset, size int) error

v1.0.0

Dec 29, 2025

Changes in this version

+ var RandReader io.Reader = rand.Reader

+ func ConstantTimeEqual(a, b []byte) bool

+ func ConstantTimeSelect(condition int, a, b []byte) []byte

+ func HashConcat(inputs ...[]byte) []byte

+ func HashWithDomain(domain string, data []byte) []byte

+ func RandomInt(max int) (int, error)

+ func SHA3256(input []byte) []byte

+ func SampleGaussianVector(seed []byte, n int, sigma float64) []int32

+ func SampleVectorZq(seed []byte, n, q int) []int32

+ func SecureRandomBytes(n int) ([]byte, error)

+ func Shake256(input []byte, outputLen int) []byte

+ func Shake256Into(input []byte, output []byte)

+ func Shake256WithDomain(domain string, data []byte, outputLen int) []byte

+ func ValidateSeedEntropy(seed []byte) error

+ func Zeroize(b []byte)

+ func ZeroizeInt32(s []int32)

+ func ZeroizeInt8(s []int8)