encryption

Documentation

Index

• Constants
• func CalculateEncryptedFilesize(size int64) int64
• func DecryptReader(encInfo models.EncryptionInfo, input io.Reader, output io.Writer) error
• func Encrypt(encInfo *models.EncryptionInfo, input io.Reader, output io.Writer) error
• func EncryptDecryptBytes(input, cipherBlock, nonce []byte, doEncrypt bool) ([]byte, error)
• func GetCipherFromFile(encInfo models.EncryptionInfo) ([]byte, error)
• func GetDecryptReader(cipherKey []byte, input io.Reader) (io.Reader, error)
• func GetDecryptWriter(cipherKey []byte, input io.Writer) (io.Writer, error)
• func GetEncryptReader(cipherKey []byte, input io.Reader) (io.Reader, error)
• func GetEncryptWriter(cipherKey []byte, input io.Writer) (*sio.EncWriter, error)
• func GetRandomCipher() ([]byte, error)
• func GetRandomNonce() ([]byte, error)
• func Init(config models.Configuration)
• func IsCorrectKey(encInfo models.EncryptionInfo, input *os.File) bool
• func PasswordChecksum(pw, salt string) string

Constants

const EndToEndEncryption = 5

EndToEndEncryption means all files are encrypted and decrypted client-side

const FullEncryptionInput = 4

FullEncryptionInput means all files are encrypted, password needs to be entered on startup

const FullEncryptionStored = 3

FullEncryptionStored means all files are encrypted, cipher for local files is in plaintext

const LocalEncryptionInput = 2

LocalEncryptionInput means remote files are stored in plaintext, password needs to be entered on startup

const LocalEncryptionStored = 1

LocalEncryptionStored means remote files are stored in plaintext, cipher for local files is in plaintext

const NoEncryption = 0

NoEncryption means all files are stored in plaintext

Functions

func CalculateEncryptedFilesize

func CalculateEncryptedFilesize(size int64) int64

CalculateEncryptedFilesize returns the filesize of the encrypted file including the encryption overhead

func DecryptReader

func DecryptReader(encInfo models.EncryptionInfo, input io.Reader, output io.Writer) error

DecryptReader modifies a reader so it can decrypt encrypted files

func Encrypt

func Encrypt(encInfo *models.EncryptionInfo, input io.Reader, output io.Writer) error

Encrypt encrypts a file

func EncryptDecryptBytes

func EncryptDecryptBytes(input, cipherBlock, nonce []byte, doEncrypt bool) ([]byte, error)

EncryptDecryptBytes encrypts or decrypts a byte array

func GetCipherFromFile

func GetCipherFromFile(encInfo models.EncryptionInfo) ([]byte, error)

GetCipherFromFile loads the cipher from a file model

func GetDecryptReader

func GetDecryptReader(cipherKey []byte, input io.Reader) (io.Reader, error)

GetDecryptReader returns a reader that can decrypt encrypted files

func GetDecryptWriter

func GetDecryptWriter(cipherKey []byte, input io.Writer) (io.Writer, error)

GetDecryptWriter returns a writer that can decrypt encrypted files

func GetEncryptReader

func GetEncryptReader(cipherKey []byte, input io.Reader) (io.Reader, error)

GetEncryptReader returns a reader that can encrypt plain files

func GetEncryptWriter

func GetEncryptWriter(cipherKey []byte, input io.Writer) (*sio.EncWriter, error)

GetEncryptWriter returns a writer that can encrypt plain files

func GetRandomCipher

func GetRandomCipher() ([]byte, error)

GetRandomCipher a 32 byte long array with random data

func GetRandomNonce

func GetRandomNonce() ([]byte, error)

GetRandomNonce a 12 byte long array with random data

func Init

func Init(config models.Configuration)

Init needs to be called to load the master key into memory or ask the user for the password

func IsCorrectKey

func IsCorrectKey(encInfo models.EncryptionInfo, input *os.File) bool

IsCorrectKey checks if correct key is being used. This does not check for complete file authentication.

func PasswordChecksum

func PasswordChecksum(pw, salt string) string

PasswordChecksum creates a checksum which is used to check if the supplied password is correct