x448

Documentation

Index

• Constants
• func Decrypt(privateKey *PrivateKey, ephemeralPublicKey *PublicKey, ciphertext []byte) (encodedSessionKey []byte, err error)
• func EncodeFields(writer io.Writer, ephemeralPublicKey *PublicKey, encryptedSessionKey []byte, ...) (err error)
• func EncodedFieldsLength(encryptedSessionKey []byte, v6 bool) int
• func Validate(pk *PrivateKey) (err error)
• type PrivateKey
  • func GenerateKey(rand io.Reader) (*PrivateKey, error)
  • func NewPrivateKey(key PublicKey) *PrivateKey
• type PublicKey
  • func DecodeFields(reader io.Reader, v6 bool) (ephemeralPublicKey *PublicKey, encryptedSessionKey []byte, cipherFunction byte, ...)
  • func Encrypt(rand io.Reader, publicKey *PublicKey, sessionKey []byte) (ephemeralPublicKey *PublicKey, encryptedSessionKey []byte, err error)

Constants

const PointSize = 56

Functions

func Decrypt

func Decrypt(privateKey *PrivateKey, ephemeralPublicKey *PublicKey, ciphertext []byte) (encodedSessionKey []byte, err error)

Decrypt decrypts a session key stored in ciphertext with the provided x448 private key and ephemeral public key

func EncodeFields

func EncodeFields(writer io.Writer, ephemeralPublicKey *PublicKey, encryptedSessionKey []byte, cipherFunction byte, v6 bool) (err error)

EncodeField encodes x448 session key encryption as ephemeral x448 public key | follow byte length | cipherFunction (v3 only) | encryptedSessionKey and writes it to writer

func EncodedFieldsLength

func EncodedFieldsLength(encryptedSessionKey []byte, v6 bool) int

EncodeFieldsLength returns the length of the ciphertext encoding given the encrpyted session key.

func Validate

func Validate(pk *PrivateKey) (err error)

Validate validates that the provided public key matches the private key.

Types

type PrivateKey

type PrivateKey struct {
	PublicKey
	Secret []byte
}

func GenerateKey

func GenerateKey(rand io.Reader) (*PrivateKey, error)

GenerateKey generates a new x448 key pair

func NewPrivateKey

func NewPrivateKey(key PublicKey) *PrivateKey

type PublicKey

type PublicKey struct {
	Point []byte
}

func DecodeFields

func DecodeFields(reader io.Reader, v6 bool) (ephemeralPublicKey *PublicKey, encryptedSessionKey []byte, cipherFunction byte, err error)

DecodeField decodes a x448 session key encryption as ephemeral x448 public key | follow byte length | cipherFunction (v3 only) | encryptedSessionKey

func Encrypt

func Encrypt(rand io.Reader, publicKey *PublicKey, sessionKey []byte) (ephemeralPublicKey *PublicKey, encryptedSessionKey []byte, err error)

Encrypt encrpyts a sessionKey with x448 according to the OpenPGP crypto refresh specification section 5.1.6. The function assumes that the sessionKey has the correct format and padding according to the specification.