block

package

v0.0.14 Latest Latest Go to latest Published: Jun 22, 2021 License: AGPL-3.0 Imports: 8 Imported by: 0

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Repository

github.com/katzenpost/minclient

Links

Open Source Insights

Documentation ¶

Overview ¶

Package block provides routines for manipulating End to End blocks.

Index ¶

Constants
Variables
func EncryptMessage(msgID *[MessageIDLength]byte, msg []byte, sender *ecdh.PrivateKey, ...) ([][]byte, error)
type Block
- func DecryptBlock(b []byte, recipient *ecdh.PrivateKey) (*Block, *ecdh.PublicKey, error)
- func (b *Block) FromBytes(buf []byte) error
- func (b *Block) ToBytes() ([]byte, error)

Constants ¶

View Source

const (
	// MessageIDLength is the length of a message ID in bytes.
	MessageIDLength = 16
)

Variables ¶

View Source

var (
	// BlockCiphertextLength is the length of a BlockCiphertext in bytes.
	BlockCiphertextLength = constants.UserForwardPayloadLength

	// BlockPayloadLength is the maximum user payload length in a Block.
	BlockPayloadLength = BlockCiphertextLength - (blockCiphertextOverhead + blockOverhead)
)

Functions ¶

func EncryptMessage ¶

func EncryptMessage(msgID *[MessageIDLength]byte, msg []byte, sender *ecdh.PrivateKey, recipient *ecdh.PublicKey) ([][]byte, error)

EncryptMessage encrypts a message after fragmenting it into blocks, and returns a vector of byte serialized ciphertexts.

Types ¶

type Block ¶

type Block struct {
	MessageID   [MessageIDLength]byte
	TotalBlocks uint16
	BlockID     uint16
	BlockLength uint32
	Payload     []byte
}

Block is a Katzenpost end to end Block (plaintext).

func DecryptBlock ¶

func DecryptBlock(b []byte, recipient *ecdh.PrivateKey) (*Block, *ecdh.PublicKey, error)

DecryptBlock authenticates and decrypts a encrypted Block, and returns the Block and sender's static PublicKey.

func (*Block) FromBytes ¶

func (b *Block) FromBytes(buf []byte) error

FromBytes deserializes bytes into the Block.

func (*Block) ToBytes ¶

func (b *Block) ToBytes() ([]byte, error)

ToBytes serializes a Block into bytes.

Source Files ¶

View all Source files

block.go

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