dh

Documentation

Index

• func ComputeSecret(private *PrivateKey, peersPublic *PublicKey) []byte
• func GenerateKey(groupID GroupID, rand io.Reader) (*PrivateKey, *PublicKey, error)
• func GenerateKeyWithGroup(param *Group, rand io.Reader) (*PrivateKey, *PublicKey, error)
• func IsSafePrimeParameters(param Parameters, n int) bool
• func MarshalPrivateKey(key *PrivateKey) ([]byte, error)
• func MarshalPublicKey(key *PublicKey) ([]byte, error)
• type Group
  • func GetMODGroup(groupID GroupID) (group *Group, err error)
• type GroupID
• type Parameters
• type PrivateKey
  • func ParsePrivateKey(derBytes []byte) (*PrivateKey, error)
  • func (this *PrivateKey) ComputeSecret(peersPublic *PublicKey) (secret []byte)
  • func (this *PrivateKey) Public() crypto.PublicKey
• type PublicKey
  • func GeneratePublicKey(private *PrivateKey) (*PublicKey, error)
  • func ParsePublicKey(derBytes []byte) (pub *PublicKey, err error)
  • func (this *PublicKey) Check() (err error)

Functions

func ComputeSecret

func ComputeSecret(private *PrivateKey, peersPublic *PublicKey) []byte

生成密钥

func GenerateKey

func GenerateKey(groupID GroupID, rand io.Reader) (*PrivateKey, *PublicKey, error)

生成证书

func GenerateKeyWithGroup

func GenerateKeyWithGroup(param *Group, rand io.Reader) (*PrivateKey, *PublicKey, error)

生成证书

func IsSafePrimeParameters

func IsSafePrimeParameters(param Parameters, n int) bool

判断是否为安全数据

func MarshalPrivateKey

func MarshalPrivateKey(key *PrivateKey) ([]byte, error)

包装私钥

func MarshalPublicKey

func MarshalPublicKey(key *PublicKey) ([]byte, error)

包装公钥

Types

type Group

type Group struct {
	// The prime
	P *big.Int

	// The generator
	G *big.Int
}

分组数据

func GetMODGroup

func GetMODGroup(groupID GroupID) (group *Group, err error)

Current minimum recommendation is 2048 bit with id=14.

type GroupID

type GroupID uint

分组 id

const (
	P1001 GroupID = 1 + iota
	P1002
	P1536
	P2048
	P3072
	P4096
	P6144
	P8192
)

type Parameters

type Parameters struct {
	// The prime
	P *big.Int

	// The generator
	G *big.Int
}

公用参数

type PrivateKey

type PrivateKey struct {
	PublicKey

	// 私钥
	X *big.Int
}

私钥

func ParsePrivateKey

func ParsePrivateKey(derBytes []byte) (*PrivateKey, error)

解析私钥

func (*PrivateKey) ComputeSecret

func (this *PrivateKey) ComputeSecret(peersPublic *PublicKey) (secret []byte)

生成密钥

func (*PrivateKey) Public

func (this *PrivateKey) Public() crypto.PublicKey

type PublicKey

type PublicKey struct {
	Parameters

	// 公钥
	Y *big.Int
}

公钥

func GeneratePublicKey

func GeneratePublicKey(private *PrivateKey) (*PublicKey, error)

从私钥获取公钥

func ParsePublicKey

func ParsePublicKey(derBytes []byte) (pub *PublicKey, err error)

解析公钥

func (*PublicKey) Check

func (this *PublicKey) Check() (err error)

检测 public key is < 0 or > g.P.