crypto

package module
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 Go to latest Published: Sep 25, 2016 License: MIT Imports: 19 Imported by: 0

README

go-libp2p-crypto

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Various cryptographic utilities used by ipfs

Documentation

Go to https://godoc.org/github.com/ipfs/go-libp2p-crypto.

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Feel free to join in. All welcome. Open an issue!

This repository falls under the IPFS Code of Conduct.

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License

MIT © 2016 Jeromy Johnson

Documentation

Overview

package crypto implements various cryptographic utilities used by ipfs. This includes a Public and Private key interface and an RSA key implementation that satisfies it.

Index

Constants

View Source 
const (
	RSA = iota
	Ed25519
)

Variables

View Source 
var ErrBadKeyType = errors.New("invalid or unsupported key type")

Functions

func ConfigDecodeKey 

func ConfigDecodeKey(b string) ([]byte, error)

ConfigDecodeKey decodes from b64 (for config file), and unmarshals.

func ConfigEncodeKey 

func ConfigEncodeKey(b []byte) string

ConfigEncodeKey encodes to b64 (for config file), and marshals.

func GenerateEd25519Key added in v1.1.0 

func GenerateEd25519Key(src io.Reader) (PrivKey, PubKey, error)

func GenerateKeyPair 

func GenerateKeyPair(typ, bits int) (PrivKey, PubKey, error)

func GenerateKeyPairWithReader 

func GenerateKeyPairWithReader(typ, bits int, src io.Reader) (PrivKey, PubKey, error)

Generates a keypair of the given type and bitsize

func KeyEqual 

func KeyEqual(k1, k2 Key) bool

KeyEqual checks whether two

func KeyHash 

func KeyHash(k Key) ([]byte, error)

KeyHash hashes a key.

func KeyStretcher 

func KeyStretcher(cipherType string, hashType string, secret []byte) (StretchedKeys, StretchedKeys)

Generates a set of keys for each party by stretching the shared key. (myIV, theirIV, myCipherKey, theirCipherKey, myMACKey, theirMACKey)

func MarshalPrivateKey 

func MarshalPrivateKey(k PrivKey) ([]byte, error)

MarshalPrivateKey converts a key object into its protobuf serialized form.

func MarshalPublicKey 

func MarshalPublicKey(k PubKey) ([]byte, error)

MarshalPublicKey converts a public key object into a protobuf serialized public key

func MarshalRsaPrivateKey 

func MarshalRsaPrivateKey(k *RsaPrivateKey) []byte

func MarshalRsaPublicKey 

func MarshalRsaPublicKey(k *RsaPublicKey) ([]byte, error)

Types

type Ed25519PrivateKey added in v1.1.0 

type Ed25519PrivateKey struct {
	// contains filtered or unexported fields
}

func UnmarshalEd25519PrivateKey added in v1.1.0 

func UnmarshalEd25519PrivateKey(data []byte) (*Ed25519PrivateKey, error)

func (*Ed25519PrivateKey) Bytes added in v1.1.0 

func (k *Ed25519PrivateKey) Bytes() ([]byte, error)

func (*Ed25519PrivateKey) Equals added in v1.1.0 

func (k *Ed25519PrivateKey) Equals(o Key) bool

func (*Ed25519PrivateKey) GenSecret added in v1.1.0 

func (k *Ed25519PrivateKey) GenSecret() []byte

func (*Ed25519PrivateKey) GetPublic added in v1.1.0 

func (k *Ed25519PrivateKey) GetPublic() PubKey

func (*Ed25519PrivateKey) Hash added in v1.1.0 

func (k *Ed25519PrivateKey) Hash() ([]byte, error)

func (*Ed25519PrivateKey) Sign added in v1.1.0 

func (k *Ed25519PrivateKey) Sign(msg []byte) ([]byte, error)

type Ed25519PublicKey added in v1.1.0 

type Ed25519PublicKey struct {
	// contains filtered or unexported fields
}

func (*Ed25519PublicKey) Bytes added in v1.1.0 

func (k *Ed25519PublicKey) Bytes() ([]byte, error)

func (*Ed25519PublicKey) Equals added in v1.1.0 

func (k *Ed25519PublicKey) Equals(o Key) bool

func (*Ed25519PublicKey) Hash added in v1.1.0 

func (k *Ed25519PublicKey) Hash() ([]byte, error)

func (*Ed25519PublicKey) Verify added in v1.1.0 

func (k *Ed25519PublicKey) Verify(data []byte, sig []byte) (bool, error)

type GenSharedKey 

type GenSharedKey func([]byte) ([]byte, error)

Given a public key, generates the shared key.

func GenerateEKeyPair 

func GenerateEKeyPair(curveName string) ([]byte, GenSharedKey, error)

Generates an ephemeral public key and returns a function that will compute the shared secret key. Used in the identify module.

Focuses only on ECDH now, but can be made more general in the future.

type Key 

type Key interface {
	// Bytes returns a serialized, storeable representation of this key
	Bytes() ([]byte, error)

	// Hash returns the hash of this key
	Hash() ([]byte, error)

	// Equals checks whether two PubKeys are the same
	Equals(Key) bool
}

Key represents a crypto key that can be compared to another key

type PrivKey 

type PrivKey interface {
	Key

	// Cryptographically sign the given bytes
	Sign([]byte) ([]byte, error)

	// Return a public key paired with this private key
	GetPublic() PubKey

	// Generate a secret string of bytes
	GenSecret() []byte
}

PrivKey represents a private key that can be used to generate a public key, sign data, and decrypt data that was encrypted with a public key

func UnmarshalPrivateKey 

func UnmarshalPrivateKey(data []byte) (PrivKey, error)

UnmarshalPrivateKey converts a protobuf serialized private key into its representative object

type PubKey 

type PubKey interface {
	Key

	// Verify that 'sig' is the signed hash of 'data'
	Verify(data []byte, sig []byte) (bool, error)
}

func UnmarshalPublicKey 

func UnmarshalPublicKey(data []byte) (PubKey, error)

UnmarshalPublicKey converts a protobuf serialized public key into its representative object

type RsaPrivateKey 

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

func UnmarshalRsaPrivateKey 

func UnmarshalRsaPrivateKey(b []byte) (*RsaPrivateKey, error)

func (*RsaPrivateKey) Bytes 

func (sk *RsaPrivateKey) Bytes() ([]byte, error)

func (*RsaPrivateKey) Decrypt 

func (sk *RsaPrivateKey) Decrypt(b []byte) ([]byte, error)

func (*RsaPrivateKey) Equals 

func (sk *RsaPrivateKey) Equals(k Key) bool

Equals checks whether this key is equal to another

func (*RsaPrivateKey) GenSecret 

func (sk *RsaPrivateKey) GenSecret() []byte

func (*RsaPrivateKey) GetPublic 

func (sk *RsaPrivateKey) GetPublic() PubKey

func (*RsaPrivateKey) Hash 

func (sk *RsaPrivateKey) Hash() ([]byte, error)

func (*RsaPrivateKey) Sign 

func (sk *RsaPrivateKey) Sign(message []byte) ([]byte, error)

type RsaPublicKey 

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

func UnmarshalRsaPublicKey 

func UnmarshalRsaPublicKey(b []byte) (*RsaPublicKey, error)

func (*RsaPublicKey) Bytes 

func (pk *RsaPublicKey) Bytes() ([]byte, error)

func (*RsaPublicKey) Encrypt 

func (pk *RsaPublicKey) Encrypt(b []byte) ([]byte, error)

func (*RsaPublicKey) Equals 

func (pk *RsaPublicKey) Equals(k Key) bool

Equals checks whether this key is equal to another

func (*RsaPublicKey) Hash 

func (pk *RsaPublicKey) Hash() ([]byte, error)

func (*RsaPublicKey) Verify 

func (pk *RsaPublicKey) Verify(data, sig []byte) (bool, error)

type StretchedKeys 

type StretchedKeys struct {
	IV        []byte
	MacKey    []byte
	CipherKey []byte
}

Source Files

View all Source files

Directories

Path Synopsis
Package crypto_pb is a generated protocol buffer package.
 Package crypto_pb is a generated protocol buffer package.

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