zkidentity

package
v0.1.2 Latest Latest
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 Go to latest Published: Jan 6, 2023 License: ISC Imports: 11 Imported by: 6

Documentation

Overview

zkidentity package manages public and private identities.

Index

Constants

View Source 
const (
	IdentitySize = sha256.Size
)

Variables

View Source 
var (
	ErrNotEqual = errors.New("not equal")
	ErrVerify   = errors.New("verify error")
)

Functions

func Byte2ID 

func Byte2ID(to []byte) (*[32]byte, error)

func Fingerprint 

func Fingerprint(id [IdentitySize]byte) string

func IdentityFromPub 

func IdentityFromPub(pub *sntrup4591761.PublicKey) *[32]byte

func String2ID 

func String2ID(to string) (*[32]byte, error)

Types

type FixedSizeDigest 

type FixedSizeDigest = ShortID

FixedSizeDigest is a 32-byte, fixed size sha256 digest.

type FixedSizeEd25519PrivateKey 

type FixedSizeEd25519PrivateKey = FixedSizeSignature

FixedSizeEd25519PrivateKey is a 64-byte, fixed size private key.

type FixedSizeEd25519PublicKey 

type FixedSizeEd25519PublicKey = ShortID

FixedSizeEd25519PublicKey is a 32-byte, fixed size ed25519 public key.

type FixedSizeSignature 

type FixedSizeSignature [64]byte

FixedSizeSignature is a 64-byte, fixed size signature. This is used as an alternative for 64-byte signatures to ensure compact encoding into json.

func (*FixedSizeSignature) FromBytes 

func (u *FixedSizeSignature) FromBytes(b []byte) error

FromBytes copies the signature from the given byte slice. The passed slice must have the correct length.

func (*FixedSizeSignature) FromString 

func (u *FixedSizeSignature) FromString(s string) error

FromString decodes s into an FixedSizeSignature. s must contain an hex-encoded signature of the correct length.

func (FixedSizeSignature) MarshalJSON 

func (u FixedSizeSignature) MarshalJSON() ([]byte, error)

MarshalJSON marshals the id into a json string.

func (FixedSizeSignature) String 

func (u FixedSizeSignature) String() string

String returns the hex encoding of the FixedSizeSignature.

func (*FixedSizeSignature) UnmarshalJSON 

func (u *FixedSizeSignature) UnmarshalJSON(b []byte) error

UnmarshalJSON unmarshals the json representation of an FixedSizeSignature.

type FixedSizeSntrupCiphertext 

type FixedSizeSntrupCiphertext [sntrup4591761.CiphertextSize]byte

FixedSizeSntrupCiphertext is a fixed size byte slice capable of holding a sntrup4591761 cipher text that encodes as an hex string in json.

func (*FixedSizeSntrupCiphertext) FromBytes 

func (u *FixedSizeSntrupCiphertext) FromBytes(b []byte) error

FromBytes copies the short id from the given byte slice. The passed slice must have the correct length.

func (*FixedSizeSntrupCiphertext) FromString 

func (u *FixedSizeSntrupCiphertext) FromString(s string) error

FromString decodes s into an FixedSizeSntrupCiphertext. s must contain an hex-encoded ID of the correct length.

func (FixedSizeSntrupCiphertext) MarshalJSON 

func (u FixedSizeSntrupCiphertext) MarshalJSON() ([]byte, error)

MarshalJSON marshals the id into a json string.

func (FixedSizeSntrupCiphertext) String 

func (u FixedSizeSntrupCiphertext) String() string

String returns the hex encoding of the FixedSizeSntrupCiphertext.

func (*FixedSizeSntrupCiphertext) UnmarshalJSON 

func (u *FixedSizeSntrupCiphertext) UnmarshalJSON(b []byte) error

UnmarshalJSON unmarshals the json representation of a FixedSizeSntrupCiphertext.

type FixedSizeSntrupPrivateKey 

type FixedSizeSntrupPrivateKey [sntrup4591761.PrivateKeySize]byte

FixedSizeSntrupPrivateKey is a fixed size sntrup private key.

func (*FixedSizeSntrupPrivateKey) FromBytes 

func (u *FixedSizeSntrupPrivateKey) FromBytes(b []byte) error

FromBytes copies the key from the given byte slice. The passed slice must have the correct length.

func (*FixedSizeSntrupPrivateKey) FromString 

func (u *FixedSizeSntrupPrivateKey) FromString(s string) error

FromString decodes s into an FixedSizeSntrupPrivateKey. s must contain an hex-encoded ID of the correct length.

func (FixedSizeSntrupPrivateKey) MarshalJSON 

func (u FixedSizeSntrupPrivateKey) MarshalJSON() ([]byte, error)

MarshalJSON marshals the id into a json string.

func (FixedSizeSntrupPrivateKey) String 

func (u FixedSizeSntrupPrivateKey) String() string

String returns the hex encoding of the FixedSizeSntrupPrivateKey.

func (*FixedSizeSntrupPrivateKey) UnmarshalJSON 

func (u *FixedSizeSntrupPrivateKey) UnmarshalJSON(b []byte) error

UnmarshalJSON unmarshals the json representation of an FixedSizeSntrupPrivateKey.

type FixedSizeSntrupPublicKey 

type FixedSizeSntrupPublicKey [sntrup4591761.PublicKeySize]byte

FixedSizeSntrupPublicKey is a fixed size sntrup public key.

func (*FixedSizeSntrupPublicKey) FromBytes 

func (u *FixedSizeSntrupPublicKey) FromBytes(b []byte) error

FromBytes copies the key from the given byte slice. The passed slice must have the correct length.

func (*FixedSizeSntrupPublicKey) FromString 

func (u *FixedSizeSntrupPublicKey) FromString(s string) error

FromString decodes s into an FixedSizeSntrupPublicKey. s must contain an hex-encoded FixedSizeSntrupPrivateKey of the correct length.

func (FixedSizeSntrupPublicKey) MarshalJSON 

func (u FixedSizeSntrupPublicKey) MarshalJSON() ([]byte, error)

MarshalJSON marshals the id into a json string.

func (FixedSizeSntrupPublicKey) String 

func (u FixedSizeSntrupPublicKey) String() string

String returns the hex encoding of the FixedSizeSntrupPublicKey.

func (*FixedSizeSntrupPublicKey) UnmarshalJSON 

func (u *FixedSizeSntrupPublicKey) UnmarshalJSON(b []byte) error

UnmarshalJSON unmarshals the json representation of an FixedSizeSntrupPublicKey.

type FullIdentity 

type FullIdentity struct {
	Public        PublicIdentity             `json:"publicIdentity"`
	PrivateSigKey FixedSizeEd25519PrivateKey `json:"privateSigKey"`
	PrivateKey    FixedSizeSntrupPrivateKey  `json:"privateKey"`
}

func MustNew 

func MustNew(name, nick string) *FullIdentity

MustNew generates a new identity or panics.

func New 

func New(name, nick string) (*FullIdentity, error)

func NewWithRNG 

func NewWithRNG(name, nick string, prng io.Reader) (*FullIdentity, error)

func (*FullIdentity) RecalculateDigest 

func (fi *FullIdentity) RecalculateDigest() error

func (FullIdentity) SignMessage 

func (fi FullIdentity) SignMessage(message []byte) [ed25519.SignatureSize]byte

type PublicIdentity 

type PublicIdentity struct {
	Name      string                    `json:"name"`
	Nick      string                    `json:"nick"`
	SigKey    FixedSizeEd25519PublicKey `json:"sigKey"`
	Key       FixedSizeSntrupPublicKey  `json:"key"`
	Identity  ShortID                   `json:"identity"`
	Digest    FixedSizeDigest           `json:"digest"`    // digest of name, keys and identity
	Signature FixedSizeSignature        `json:"signature"` // signature of Digest
}

A zkc public identity consists of a name and nick (e.g "John Doe" and "jd" respectively), a ed25519 public signature key, and a NTRU Prime public key (used to derive symmetric encryption keys). An extra Identity field, taken as the SHA256 of the NTRU public key, is used as a short handle to uniquely identify a user in various zkc structures.

func (PublicIdentity) Fingerprint 

func (p PublicIdentity) Fingerprint() string

func (PublicIdentity) String 

func (p PublicIdentity) String() string

func (PublicIdentity) Verify 

func (p PublicIdentity) Verify() bool

func (PublicIdentity) VerifyIdentity 

func (p PublicIdentity) VerifyIdentity() bool

func (PublicIdentity) VerifyMessage 

func (p PublicIdentity) VerifyMessage(msg []byte, sig [ed25519.SignatureSize]byte) bool

type ShortID 

type ShortID [32]byte

ShortID is a 32-byte global ID. This is used as an alias for all 32-byte arrays that are interpreted as unique IDs.

func (ShortID) ConstantTimeEq 

func (u ShortID) ConstantTimeEq(other *ShortID) bool

ConstantTimeEq returns 1 when the two ids are equal. The comparison is done in constant time.

func (*ShortID) FromBytes 

func (u *ShortID) FromBytes(b []byte) error

FromBytes copies the short id from the given byte slice. The passed slice must have the correct length.

func (*ShortID) FromString 

func (u *ShortID) FromString(s string) error

FromString decodes s into an ShortID. s must contain an hex-encoded ID of the correct length.

func (ShortID) IsEmpty 

func (u ShortID) IsEmpty() bool

IsEmpty returns true if the short ID is empty (i.e. all zero).

func (*ShortID) Less 

func (u *ShortID) Less(other *ShortID) bool

Less returns whether this is less then the passed ID. other must be non-nil, otherwise this panics. The comparison is made in a big-endian way.

func (ShortID) MarshalJSON 

func (u ShortID) MarshalJSON() ([]byte, error)

MarshalJSON marshals the id into a json string.

func (ShortID) ShortLogID 

func (u ShortID) ShortLogID() string

ShortLogID returns the first 8 bytes in hex format (16 chars), useful as a short log ID.

func (ShortID) String 

func (u ShortID) String() string

String returns the hex encoding of the ShortID.

func (*ShortID) UnmarshalJSON 

func (u *ShortID) UnmarshalJSON(b []byte) error

UnmarshalJSON unmarshals the json representation of a ShortID.

Source Files

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