cryptoswitch

package

v0.0.0-...-bfe60c0 Latest Latest Go to latest Published: Mar 14, 2021 License: MIT Imports: 14 Imported by: 0

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type Cipher int

const (
	AES Cipher = iota
	DES
	TripleDES
	RC5
	Blowfish
	Twofish
	Camellia
	RC4
	SEAL
)

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

func NewCryptoSwitch(cipher Cipher, mode Mode) *CryptoSwitch

func (cw *CryptoSwitch) Decrypt(privkey *PrivateKey, msg []byte) ([]byte, error)

Decrypt decrypts a passed message with a receiver private key, returns plaintext or decryption error

func (cw *CryptoSwitch) Encrypt(pubkey *PublicKey, msg []byte) ([]byte, error)

Encrypt encrypts a passed message with a receiver public key, returns ciphertext or encryption error

type Mode int

const (
	CBC Mode = iota
	GCM
)

type PrivateKey struct {
	*PublicKey
	D *big.Int
}

func GenerateKey() (*PrivateKey, error)

GenerateKey generates secp256k1 key pair

func (k *PrivateKey) Encapsulate(pub *PublicKey) ([]byte, []byte, error)

Encapsulate encapsulates key by using Key Encapsulation Mechanism and returns symmetric key; can be safely used as encryption key

type PublicKey struct {
	elliptic.Curve
	X, Y *big.Int
}

PublicKey instance with nested elliptic.Curve interface (secp256k1 instance in our case)

func (k *PublicKey) Bytes() []byte

Bytes returns public key raw bytes; Could be optionally compressed by dropping Y part

func (k *PublicKey) Decapsulate(priv *PrivateKey) ([]byte, []byte, error)

Decapsulate decapsulates key by using Key Encapsulation Mechanism and returns symmetric key; can be safely used as encryption key