crypto

Documentation

Index

• Variables
• func EqualHash(a, b Hash) bool
• func NewDecryptReadSeeker(key string, size int64, backingRs io.ReadSeeker) (io.ReadSeeker, error)
• func NewEncname() string
• type DecryptReadSeeker
  • func (seeker *DecryptReadSeeker) Read(b []byte) (int, error)
  • func (seeker *DecryptReadSeeker) Seek(offset int64, whence int) (int64, error)
• type Encryptor
  • func NewDecryptor(key, iv string) *Encryptor
  • func NewEncryptor() *Encryptor
  • func (e *Encryptor) DecryptChunk(plainBytes, cipherBytes []byte) ([]byte, error)
  • func (e *Encryptor) Encrypt(out io.Writer, in io.Reader, encrypt bool) (Hash, error)
  • func (e *Encryptor) GetIv() string
  • func (e *Encryptor) GetKey() string
  • func (e *Encryptor) Init()
  • func (e *Encryptor) SetIv(iv string)
  • func (e *Encryptor) SetKey(key string)
• type Hash

Variables

var ChunkSize = int64(1024 * 256) // 256KiB

Functions

func EqualHash

func EqualHash(a, b Hash) bool

func NewDecryptReadSeeker

func NewDecryptReadSeeker(key string, size int64, backingRs io.ReadSeeker) (io.ReadSeeker, error)

func NewEncname

func NewEncname() string

NewEncname generates a random 200 bit number and returns the base32 string

Types

type DecryptReadSeeker

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

func (*DecryptReadSeeker) Read

func (seeker *DecryptReadSeeker) Read(b []byte) (int, error)

func (*DecryptReadSeeker) Seek

func (seeker *DecryptReadSeeker) Seek(offset int64, whence int) (int64, error)

Only 0 whence is supported

type Encryptor

type Encryptor struct {
	ChunkIdx int64 // chuckCount used to derive nonce
	Overhead int64 // 16
	// contains filtered or unexported fields
}

func NewDecryptor

func NewDecryptor(key, iv string) *Encryptor

func NewEncryptor

func NewEncryptor() *Encryptor

NewEncryptor generates a new random key, iv

func (*Encryptor) DecryptChunk

func (e *Encryptor) DecryptChunk(plainBytes, cipherBytes []byte) ([]byte, error)

func (*Encryptor) Encrypt

func (e *Encryptor) Encrypt(out io.Writer, in io.Reader, encrypt bool) (Hash, error)

Read plain/cipher text from in io.Reader and writes plain/cipher text to out io.Writer. If encrypt is true, then in is the plaintext.

func (*Encryptor) GetIv

func (e *Encryptor) GetIv() string

func (*Encryptor) GetKey

func (e *Encryptor) GetKey() string

func (*Encryptor) Init

func (e *Encryptor) Init()

Init sets up the internal oncryptor using current key and iv.

func (*Encryptor) SetIv

func (e *Encryptor) SetIv(iv string)

func (*Encryptor) SetKey

func (e *Encryptor) SetKey(key string)

type Hash

type Hash struct {
	InSHA1    string
	InSHA256  string
	OutSHA1   string
	OutSHA256 string
}