subtle

Documentation

Overview

Package subtle provides common methods needed in subtle implementations.

Index

• func ComputeHKDF(hashAlg string, key []byte, salt []byte, info []byte, tagSize uint32) ([]byte, error)
• func ComputeHash(hashFunc func() hash.Hash, data []byte) ([]byte, error)
• func ConvertCurveName(name string) string
• func ConvertHashName(name string) string
• func GetCurve(curve string) elliptic.Curve
• func GetHashDigestSize(hash string) (uint32, error)
• func GetHashFunc(hash string) func() hash.Hash
• func NewBigIntFromHex(s string) (*big.Int, error)

Functions

func ComputeHKDF

func ComputeHKDF(hashAlg string, key []byte, salt []byte, info []byte, tagSize uint32) ([]byte, error)

ComputeHKDF extracts a pseudorandom key.

func ComputeHash

func ComputeHash(hashFunc func() hash.Hash, data []byte) ([]byte, error)

ComputeHash calculates a hash of the given data using the given hash function.

func ConvertCurveName

func ConvertCurveName(name string) string

ConvertCurveName converts different forms of a curve name to the name that tink recognizes.

func ConvertHashName

func ConvertHashName(name string) string

ConvertHashName converts different forms of a hash name to the hash name that tink recognizes.

func GetCurve

func GetCurve(curve string) elliptic.Curve

GetCurve returns the curve object that corresponds to the given curve type. It returns null if the curve type is not supported.

func GetHashDigestSize

func GetHashDigestSize(hash string) (uint32, error)

GetHashDigestSize returns the digest size of the specified hash algorithm.

func GetHashFunc

func GetHashFunc(hash string) func() hash.Hash

GetHashFunc returns the corresponding hash function of the given hash name.

func NewBigIntFromHex

func NewBigIntFromHex(s string) (*big.Int, error)

NewBigIntFromHex returns a big integer from a hex string.