cypher

Documentation

Index

• type Cypher
  • func (c Cypher) Decrypt(msg format.Message) ([]byte, error)
  • func (c Cypher) Encrypt(contents []byte) (cipherText, mac []byte, fp format.Fingerprint)
  • func (c Cypher) GetFingerprint() format.Fingerprint
• type Manager
  • func LoadManager(kv *versioned.KV) (*Manager, error)
  • func NewManager(key *ftCrypto.TransferKey, numFps uint16, kv *versioned.KV) (*Manager, error)
  • func (m *Manager) Delete() error
  • func (m *Manager) GetUnusedCyphers() []Cypher
  • func (m *Manager) PopCypher() (Cypher, error)

Types

type Cypher

type Cypher struct {
	*Manager
	// contains filtered or unexported fields
}

Cypher contains the cryptographic and identifying information needed to decrypt a file part and associate it with the correct file.

func (Cypher) Decrypt

func (c Cypher) Decrypt(msg format.Message) ([]byte, error)

Decrypt decrypts the content of the message.

func (Cypher) Encrypt

func (c Cypher) Encrypt(contents []byte) (
	cipherText, mac []byte, fp format.Fingerprint)

Encrypt encrypts the file part contents and returns them along with a MAC and fingerprint.

func (Cypher) GetFingerprint

func (c Cypher) GetFingerprint() format.Fingerprint

GetFingerprint generates and returns the fingerprints.

type Manager

type Manager struct {
	// contains filtered or unexported fields
}

Manager the creation

func LoadManager

func LoadManager(kv *versioned.KV) (*Manager, error)

LoadManager loads the Manager from storage.

func NewManager

func NewManager(key *ftCrypto.TransferKey, numFps uint16, kv *versioned.KV) (
	*Manager, error)

NewManager returns a new cypher Manager initialised with the given number of fingerprints.

func (*Manager) Delete

func (m *Manager) Delete() error

Delete removes all saved entries from storage.

func (*Manager) GetUnusedCyphers

func (m *Manager) GetUnusedCyphers() []Cypher

GetUnusedCyphers returns a list of cyphers with unused fingerprints numbers.

func (*Manager) PopCypher

func (m *Manager) PopCypher() (Cypher, error)

PopCypher returns a new Cypher with next available fingerprint number. This marks the fingerprint as used. Returns false if no more fingerprints are available.