Documentation
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Overview ¶
Package crypto contains helper functions and interfaces that can be used to easily read and write different types of encrypted data.
Index ¶
- func NewAes(k []byte) (cipher.Block, error)
- func NewBlockReader(b cipher.Block, iv []byte, r io.Reader) (io.ReadCloser, error)
- func NewBlockWriter(b cipher.Block, iv []byte, w io.Writer) (io.WriteCloser, error)
- func NewCBKReader(c CBK, r io.Reader) io.Reader
- func NewCBKWriter(c CBK, w io.Writer) io.WriteCloser
- func NewXORReader(x XOR, r io.Reader) io.Reader
- func NewXORWriter(x XOR, w io.Writer) io.WriteCloser
- func UnwrapString(key, data []byte) string
- type CBK
- func (e *CBK) BlockSize() int
- func (e *CBK) Decrypt(dst, src []byte)
- func (e *CBK) Deshuffle(b []byte)
- func (e *CBK) Encrypt(dst, src []byte)
- func (e *CBK) Flush(w io.Writer) error
- func (e *CBK) Read(r io.Reader, b []byte) (int, error)
- func (e *CBK) Reset() error
- func (e *CBK) Shuffle(b []byte)
- func (e *CBK) Write(w io.Writer, b []byte) (int, error)
- type XOR
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func NewAes ¶
NewAes attempts to create a new AES block cipher from the provided key data. Errors will be returned if the key length is invalid.
func NewBlockReader ¶ added in v0.4.4
NewBlockReader creates a data.Reader type from the specified block cipher, IV and Reader.
This is used to Decrypt data. This function returns an error if the blocksize of the Block does not equal the length of the supplied IV.
This uses CFB mode.
func NewBlockWriter ¶ added in v0.4.4
NewBlockWriter creates a data.Reader type from the specified block cipher, IV and Writer.
This is used to Encrypt data. This function returns an error if the blocksize of the Block does not equal the length of the supplied IV.
This uses CFB mode.
func NewCBKReader ¶ added in v0.4.4
NewCBKReader creates an io.ReadCloser type from the specified CBK cipher and Reader.
func NewCBKWriter ¶ added in v0.4.4
func NewCBKWriter(c CBK, w io.Writer) io.WriteCloser
NewCBKWriter creates an io.WriteCloser type from the specified CBK cipher and Writer.
func NewXORReader ¶ added in v0.4.4
NewXORReader creates an io.WriteCloser type from the specified XOR cipher and Reader.
This creates a Block cipher with a auto-generated IV based on the key value. To control the IV value, use the 'NewCBKReader' function instead.
func NewXORWriter ¶ added in v0.4.4
func NewXORWriter(x XOR, w io.Writer) io.WriteCloser
NewXORWriter creates an io.WriteCloser type from the specified XOR cipher and Writer.
This creates a Block cipher with a auto-generated IV based on the key value. To control the IV value, use the 'NewBlockWriter' function instead.
func UnwrapString ¶ added in v0.3.4
UnwrapString is used to un-encode a string written in a XOR byte array "encrypted" by the specified key.
This function returns the string value of the result but also modifies the input array, which can be used to re-use the resulting string.
Types ¶
type CBK ¶
type CBK struct {
// Random Source to use for data generation from keys.
// This source MUST be repeatable.
Source source
A, B byte
C, D byte
// contains filtered or unexported fields
}
CBK is the representation of the CBK Cipher. CBK is a block based cipher that allows for a variable size index in encoding.
func NewCBK ¶
NewCBK returns a new CBK Cipher with the D value specified. The other A, B and C values are randomly generated at runtime.
func NewCBKEx ¶
NewCBKEx returns a new CBK Cipher with the D value, BlockSize and Entropy source specified. The other A, B and C values are randomly generated at runtime.
func NewCBKSource ¶ added in v0.1.0
NewCBKSource returns a new CBK Cipher with the A, B, C, D, BlockSize values specified.
func (*CBK) Decrypt ¶
Decrypt decrypts the first block in src into dst. Dst and src must overlap entirely or not at all.
func (*CBK) Deshuffle ¶
Deshuffle will reverse the switch around the bytes in the array based on the Cipher bytes.
func (*CBK) Encrypt ¶
Encrypt encrypts the first block in src into dst. Dst and src must overlap entirely or not at all.
func (*CBK) Flush ¶
Flush pushes the remaining bytes stored into the buffer into the supplies Writer.
func (*CBK) Read ¶
Read reads the contents of the Reader to the byte array after decrypting with this Cipher.
type XOR ¶
type XOR []byte
XOR is an alias for a byte array that acts as the XOR key data buffer.
func (XOR) Decrypt ¶
Decrypt preforms the XOR operation on the specified byte array using the cipher as the key.
Source Files
Directories