subtle

package
v1.7.0 Latest Latest
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Published: Aug 10, 2022 License: Apache-2.0 Imports: 13 Imported by: 22

Documentation

Overview

Package subtle provides common methods needed in subtle implementations.

Index

Constants

This section is empty.

Variables

This section is empty.

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 ComputeSharedSecretX25519 added in v1.7.0

func ComputeSharedSecretX25519(privKey, pubValue []byte) ([]byte, error)

ComputeSharedSecretX25519 returns the 32-byte shared key, i.e. privKey * pubValue on the curve.

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 GeneratePrivateKeyX25519 added in v1.7.0

func GeneratePrivateKeyX25519() ([]byte, error)

GeneratePrivateKeyX25519 generates a new 32-byte private key.

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.

func PublicFromPrivateX25519 added in v1.7.0

func PublicFromPrivateX25519(privKey []byte) ([]byte, error)

PublicFromPrivateX25519 computes privKey's corresponding public key.

Types

This section is empty.

Directories

Path Synopsis
Package random provides functions that generate random numbers or bytes.
Package random provides functions that generate random numbers or bytes.

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