crypto

Documentation

Index

• Variables
• func NewAesDecryptionStream(key []byte, iv []byte) cipher.Stream
• func NewAesEncryptionStream(key []byte, iv []byte) cipher.Stream
• func NewChaCha20Stream(key []byte, iv []byte) cipher.Stream
• type AEADAuthenticator
  • func (v *AEADAuthenticator) Open(dst, cipherText []byte) ([]byte, error)
  • func (v *AEADAuthenticator) Seal(dst, plainText []byte) ([]byte, error)
• type AuthenticationReader
  • func NewAuthenticationReader(auth Authenticator, reader io.Reader, aggressive bool) *AuthenticationReader
  • func (v *AuthenticationReader) CopyChunk(b []byte) int
  • func (v *AuthenticationReader) EnsureChunk() error
  • func (v *AuthenticationReader) NextChunk() error
  • func (v *AuthenticationReader) Read(b []byte) (int, error)
• type AuthenticationWriter
  • func NewAuthenticationWriter(auth Authenticator, writer io.Writer) *AuthenticationWriter
  • func (v *AuthenticationWriter) Write(b []byte) (int, error)
• type Authenticator
• type BytesGenerator
• type CryptionReader
  • func NewCryptionReader(stream cipher.Stream, reader io.Reader) *CryptionReader
  • func (v *CryptionReader) Read(data []byte) (int, error)
  • func (v *CryptionReader) Release()
• type CryptionWriter
  • func NewCryptionWriter(stream cipher.Stream, writer io.Writer) *CryptionWriter
  • func (v *CryptionWriter) Release()
  • func (v *CryptionWriter) Write(data []byte) (int, error)
• type NoOpBytesGenerator
  • func (v NoOpBytesGenerator) Next() []byte
• type StaticBytesGenerator
  • func (v StaticBytesGenerator) Next() []byte

Variables

var (
	ErrAuthenticationFailed = errors.New("Authentication failed.")
)

Functions

func NewAesDecryptionStream

func NewAesDecryptionStream(key []byte, iv []byte) cipher.Stream

NewAesDecryptionStream creates a new AES encryption stream based on given key and IV. Caller must ensure the length of key and IV is either 16, 24 or 32 bytes.

func NewAesEncryptionStream

func NewAesEncryptionStream(key []byte, iv []byte) cipher.Stream

NewAesEncryptionStream creates a new AES description stream based on given key and IV. Caller must ensure the length of key and IV is either 16, 24 or 32 bytes.

func NewChaCha20Stream

func NewChaCha20Stream(key []byte, iv []byte) cipher.Stream

NewChaCha20Stream creates a new Chacha20 encryption/descryption stream based on give key and IV. Caller must ensure the length of key is 32 bytes, and length of IV is either 8 or 12 bytes.

Types

type AEADAuthenticator

type AEADAuthenticator struct {
	cipher.AEAD
	NonceGenerator          BytesGenerator
	AdditionalDataGenerator BytesGenerator
}

func (*AEADAuthenticator) Open

func (v *AEADAuthenticator) Open(dst, cipherText []byte) ([]byte, error)

func (*AEADAuthenticator) Seal

func (v *AEADAuthenticator) Seal(dst, plainText []byte) ([]byte, error)

type AuthenticationReader

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

func NewAuthenticationReader

func NewAuthenticationReader(auth Authenticator, reader io.Reader, aggressive bool) *AuthenticationReader

func (*AuthenticationReader) CopyChunk

func (v *AuthenticationReader) CopyChunk(b []byte) int

func (*AuthenticationReader) EnsureChunk

func (v *AuthenticationReader) EnsureChunk() error

func (*AuthenticationReader) NextChunk

func (v *AuthenticationReader) NextChunk() error

func (*AuthenticationReader) Read

func (v *AuthenticationReader) Read(b []byte) (int, error)

type AuthenticationWriter

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

func NewAuthenticationWriter

func NewAuthenticationWriter(auth Authenticator, writer io.Writer) *AuthenticationWriter

func (*AuthenticationWriter) Write

func (v *AuthenticationWriter) Write(b []byte) (int, error)

type Authenticator

type Authenticator interface {
	NonceSize() int
	Overhead() int
	Open(dst, cipherText []byte) ([]byte, error)
	Seal(dst, plainText []byte) ([]byte, error)
}

type BytesGenerator

type BytesGenerator interface {
	Next() []byte
}

type CryptionReader

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

func NewCryptionReader

func NewCryptionReader(stream cipher.Stream, reader io.Reader) *CryptionReader

func (*CryptionReader) Read

func (v *CryptionReader) Read(data []byte) (int, error)

func (*CryptionReader) Release

func (v *CryptionReader) Release()

type CryptionWriter

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

func NewCryptionWriter

func NewCryptionWriter(stream cipher.Stream, writer io.Writer) *CryptionWriter

func (*CryptionWriter) Release

func (v *CryptionWriter) Release()

func (*CryptionWriter) Write

func (v *CryptionWriter) Write(data []byte) (int, error)

type NoOpBytesGenerator

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

func (NoOpBytesGenerator) Next

func (v NoOpBytesGenerator) Next() []byte

type StaticBytesGenerator

type StaticBytesGenerator struct {
	Content []byte
}

func (StaticBytesGenerator) Next

func (v StaticBytesGenerator) Next() []byte