hibe

Documentation

Index

• func Decrypt(key *PrivateKey, ciphertext *Ciphertext) *bn256.GT
• func DecryptHibeMsg(localId string, hibeParams *Params, prvKey *PrivateKey, ...) ([]byte, error)
• func EncryptHibeMsg(plaintext []byte, receiverIds []string, paramsList []*Params, ...) (map[string]string, error)
• func IdStr2HibeId(id string) ([]string, []*big.Int)
• func Setup(random io.Reader, l int) (*Params, MasterKey, error)
• func ValidateId(id string) error
• type Ciphertext
  • func Encrypt(random io.Reader, params *Params, id []*big.Int, message *bn256.GT) (*Ciphertext, error)
• type G1
• type MasterKey
• type Params
• type PrivateKey
  • func KeyGenFromMaster(random io.Reader, params *Params, master MasterKey, id []*big.Int) (*PrivateKey, error)
  • func KeyGenFromParent(random io.Reader, params *Params, parent *PrivateKey, id []*big.Int) (*PrivateKey, error)

Functions

func Decrypt

func Decrypt(key *PrivateKey, ciphertext *Ciphertext) *bn256.GT

func DecryptHibeMsg

func DecryptHibeMsg(localId string, hibeParams *Params, prvKey *PrivateKey,
	hibeMsgMap map[string]string, symKeyType crypto.KeyType) ([]byte, error)

DecryptHibeMsg is used to decrypt the HIBE message constructed by EncryptHibeMsg localId: hibe Id hibeParams: HIBE parameters of the HIBE system to which ID belongs prvKey: the localId's hibe private Key hibeMsgMap: HIBE message encrypt by EncryptHibeMsg symKeyType: symmetric key type (aes or sm4), used to symmetric encrypt the plain text first

func EncryptHibeMsg

func EncryptHibeMsg(plaintext []byte, receiverIds []string, paramsList []*Params,
	symKeyType crypto.KeyType) (map[string]string, error)

EncryptHibeMsg is used to encrypt plainText by receiverIds and their paramsList plaintext: plain text bytes receiverIds: message receivers' id list, using "/" to separate hierarchy identity in each id string paramsList: HIBE parameters list of the message receiver, len(paramsList) should be equal to len(receiverIds),

paramsList[i] are the HIBE parameters of receiverIds[i]

symKeyType: symmetric key type (aes or sm4), used to symmetric encrypt the plain text first

func IdStr2HibeId

func IdStr2HibeId(id string) ([]string, []*big.Int)

IdStr2HibeId construct HibeId according to id

func Setup

func Setup(random io.Reader, l int) (*Params, MasterKey, error)

func ValidateId

func ValidateId(id string) error

ValidateId is used to validate id format

Types

type Ciphertext

type Ciphertext = hibe.Ciphertext

func Encrypt

func Encrypt(random io.Reader, params *Params, id []*big.Int, message *bn256.GT) (*Ciphertext, error)

type G1

type G1 = bn256.G1

type MasterKey

type MasterKey = hibe.MasterKey

type Params

type Params = hibe.Params

type PrivateKey

type PrivateKey = hibe.PrivateKey

func KeyGenFromMaster

func KeyGenFromMaster(random io.Reader, params *Params, master MasterKey, id []*big.Int) (*PrivateKey, error)

func KeyGenFromParent

func KeyGenFromParent(random io.Reader, params *Params, parent *PrivateKey, id []*big.Int) (*PrivateKey, error)