encryption

package

v0.3.1 Latest Latest Go to latest Published: Dec 26, 2018 License: MIT Imports: 11 Imported by: 0

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github.com/kukgini/cckit2

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README ¶

Hyperledger Fabric chaincode kit (CCKit)

Encryption extension

Allows to encrypt all data in ledger

Based on example

Using ECDH for establishing secret key

ECDH (Elliptic curve Diffie-Hellman): both parties can establish a secret value by sending only the public key of their ephemeral or static key pair to the other party. If the key pair of one of the parties is trusted by the other party then that key pair may also be used for authentication.

Documentation ¶

Index ¶

Constants
Variables
func ArgsDecrypt(next router.ContextHandlerFunc, pos ...int) router.ContextHandlerFunc
func ArgsDecryptIfKeyProvided(next router.ContextHandlerFunc, pos ...int) router.ContextHandlerFunc
func Decrypt(key, value []byte) ([]byte, error)
func DecryptArgs(key []byte, args [][]byte) ([][]byte, error)
func DecryptBytesWith(key []byte) state.FromBytesTransformer
func Encrypt(key []byte, value interface{}) ([]byte, error)
func EncryptArgs(key []byte, args ...interface{}) ([][]byte, error)
func EncryptBytesWith(key []byte) state.ToBytesTransformer
func KeyFromTransient(c router.Context) ([]byte, error)
func KeyPartsEncryptedWith(encryptKey []byte) state.KeyPartsTransformer
func NewEncryptOnDemandPaymentCC() *router.Chaincode
func NewEncryptPaymentCC() *router.Chaincode
func State(c router.Context, key []byte) (state.State, error)
func StateWithTransientKey(c router.Context) (state.State, error)
func StateWithTransientKeyIfProvided(c router.Context) (state.State, error)
func TransientMapWithKey(key []byte) map[string][]byte
type Payment
- func (p Payment) Key() ([]string, error)

Constants ¶

View Source

const TransientMapKey = `ENCODE_KEY`

Variables ¶

View Source

var (
	// ErrKeyNotDefinedInTransientMap occurs when key not defined in transient map
	ErrKeyNotDefinedInTransientMap = errors.New(`key not defined in transient map`)
)

Functions ¶

func ArgsDecrypt ¶ added in v0.3.1

func ArgsDecrypt(next router.ContextHandlerFunc, pos ...int) router.ContextHandlerFunc

ArgsDecryptIfKeyProvided - pre middleware, decrypts chaincode method arguments, key must be provided in transient map

func ArgsDecryptIfKeyProvided ¶

func ArgsDecryptIfKeyProvided(next router.ContextHandlerFunc, pos ...int) router.ContextHandlerFunc

ArgsDecryptIfKeyProvided - pre middleware, decrypts chaincode method arguments if key provided in transient map

func Decrypt ¶

func Decrypt(key, value []byte) ([]byte, error)

Decrypt decrypts value with key

func DecryptArgs ¶

func DecryptArgs(key []byte, args [][]byte) ([][]byte, error)

DecryptArgs decrypt args

func DecryptBytesWith ¶

func DecryptBytesWith(key []byte) state.FromBytesTransformer

DecryptBytesWith decrypts by with key - used for decrypting data after reading from state

func Encrypt ¶

func Encrypt(key []byte, value interface{}) ([]byte, error)

Encrypt converts value to []byte and encrypts its with key

func EncryptArgs ¶

func EncryptArgs(key []byte, args ...interface{}) ([][]byte, error)

EncryptArgs encrypt args

func EncryptBytesWith ¶

func EncryptBytesWith(key []byte) state.ToBytesTransformer

EncryptBytesWith encrypts bytes with key - used for encrypting data for state

func KeyFromTransient ¶

func KeyFromTransient(c router.Context) ([]byte, error)

KeyFromTransient gets key for encrypting/decrypting from transient map

func KeyPartsEncryptedWith ¶

func KeyPartsEncryptedWith(encryptKey []byte) state.KeyPartsTransformer

KeyPartsEncryptedWith encrypts key parts

func NewEncryptOnDemandPaymentCC ¶ added in v0.3.1

func NewEncryptOnDemandPaymentCC() *router.Chaincode

Chaincode with encrypting data on demand (if encrypting key is provided in transient map)

func NewEncryptPaymentCC ¶ added in v0.3.1

func NewEncryptPaymentCC() *router.Chaincode

Chaincode with required encrypting (encrypting key must be provided in transient map)

func State ¶

func State(c router.Context, key []byte) (state.State, error)

State encrypting the data before putting to state and decrypting the data after getting from state

func StateWithTransientKey ¶

func StateWithTransientKey(c router.Context) (state.State, error)

StateWithTransientKey creates encrypted state state with provided key for symmetric encryption/decryption

func StateWithTransientKeyIfProvided ¶ added in v0.3.1

func StateWithTransientKeyIfProvided(c router.Context) (state.State, error)

StateWithTransientKeyIfProvided creates encrypted state wrapper with provided key for symmetric encryption/decryption if key provided, otherwise - standard state wrapper without encryption

func TransientMapWithKey ¶

func TransientMapWithKey(key []byte) map[string][]byte

TransientMapWithKey creates transient map with encrypting/decrypting key

Types ¶

type Payment ¶ added in v0.3.1

type Payment struct {
	Type   string
	Id     string
	Amount int
}

func (Payment) Key ¶ added in v0.3.1

func (p Payment) Key() ([]string, error)

Source Files ¶

View all Source files

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