key

package
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 Go to latest Published: Dec 9, 2024 License: BSD-3-Clause Imports: 17 Imported by: 0

Documentation

Overview

Package key contains types for different types of public and private keys used by Tailscale.

Index

Constants

View Source 
const (

	// DiscoPublicRawLen is the length in bytes of a DiscoPublic, when
	// serialized with AppendTo, Raw32 or WriteRawWithoutAllocating.
	DiscoPublicRawLen = 32
)
View Source 
const (

	// NodePublicRawLen is the length in bytes of a NodePublic, when
	// serialized with AppendTo, Raw32 or WriteRawWithoutAllocating.
	NodePublicRawLen = 32
)

Variables

This section is empty.

Functions

This section is empty.

Types

type ChallengePrivate 

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

ChallengePrivate is a challenge key, used to test whether clients control a key they want to prove ownership of.

A ChallengePrivate is ephemeral and not serialized to the disk or network.

func NewChallenge 

func NewChallenge() ChallengePrivate

NewChallenge creates and returns a new node private key.

func (ChallengePrivate) MarshalText 

func (k ChallengePrivate) MarshalText() ([]byte, error)

MarshalText implements encoding.TextMarshaler, but by returning an error. It shouldn't need to be marshalled anywhere.

func (ChallengePrivate) OpenFrom 

func (k ChallengePrivate) OpenFrom(p NodePublic, ciphertext []byte) (cleartext []byte, ok bool)

OpenFrom opens the NaCl box ciphertext, which must be a value created by NodePrivate.SealToChallenge, and returns the inner cleartext if ciphertext is a valid box from p to k.

func (ChallengePrivate) Public 

func (k ChallengePrivate) Public() ChallengePublic

Public returns the ChallengePublic for k. Panics if ChallengePublic is zero.

type ChallengePublic 

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

ChallengePublic is the public portion of a ChallengePrivate.

func (ChallengePublic) AppendText 

func (k ChallengePublic) AppendText(b []byte) ([]byte, error)

AppendText implements encoding.TextAppender.

func (ChallengePublic) IsZero 

func (k ChallengePublic) IsZero() bool

IsZero reports whether k is the zero value.

func (ChallengePublic) MarshalText 

func (k ChallengePublic) MarshalText() ([]byte, error)

MarshalText implements encoding.TextMarshaler.

func (ChallengePublic) String 

func (k ChallengePublic) String() string

String returns the output of MarshalText as a string.

func (*ChallengePublic) UnmarshalText 

func (k *ChallengePublic) UnmarshalText(b []byte) error

UnmarshalText implements encoding.TextUnmarshaler.

type ControlPrivate deprecated 

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

ControlPrivate is a Tailscale control plane private key.

It is functionally equivalent to a MachinePrivate, but serializes to JSON as a byte array rather than a typed string, because our control plane database stores the key that way.

Deprecated: this type should only be used in Tailscale's control plane, where existing database serializations require this less-good serialization format to persist. Other control plane implementations can use MachinePrivate with no downsides.

func NewControl 

func NewControl() ControlPrivate

NewControl generates and returns a new control plane private key.

func (ControlPrivate) IsZero 

func (k ControlPrivate) IsZero() bool

IsZero reports whether k is the zero value.

func (ControlPrivate) MarshalJSON 

func (k ControlPrivate) MarshalJSON() ([]byte, error)

MarshalJSON implements json.Marshaler.

func (ControlPrivate) OpenFrom 

func (k ControlPrivate) OpenFrom(p MachinePublic, ciphertext []byte) (cleartext []byte, ok bool)

OpenFrom opens the NaCl box ciphertext, which must be a value created by SealTo, and returns the inner cleartext if ciphertext is a valid box from p to k.

func (ControlPrivate) Public 

func (k ControlPrivate) Public() MachinePublic

Public returns the MachinePublic for k. Panics if ControlPrivate is zero.

func (ControlPrivate) SealTo 

func (k ControlPrivate) SealTo(p MachinePublic, cleartext []byte) (ciphertext []byte)

SealTo wraps cleartext into a NaCl box (see golang.org/x/crypto/nacl) to p, authenticated from k, using a random nonce.

The returned ciphertext is a 24-byte nonce concatenated with the box value.

func (ControlPrivate) SharedKey 

func (k ControlPrivate) SharedKey(p MachinePublic) MachinePrecomputedSharedKey

SharedKey returns the precomputed Nacl box shared key between k and p.

func (*ControlPrivate) UnmarshalJSON 

func (k *ControlPrivate) UnmarshalJSON(bs []byte) error

UnmarshalJSON implements json.Unmarshaler.

type DiscoPrivate 

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

DiscoPrivate is a disco key, used for peer-to-peer path discovery.

func NewDisco 

func NewDisco() DiscoPrivate

NewDisco creates and returns a new disco private key.

func (DiscoPrivate) Equal 

func (k DiscoPrivate) Equal(other DiscoPrivate) bool

Equal reports whether k and other are the same key.

func (DiscoPrivate) IsZero 

func (k DiscoPrivate) IsZero() bool

IsZero reports whether k is the zero value.

func (DiscoPrivate) Public 

func (k DiscoPrivate) Public() DiscoPublic

Public returns the DiscoPublic for k. Panics if DiscoPrivate is zero.

func (DiscoPrivate) Shared 

func (k DiscoPrivate) Shared(p DiscoPublic) DiscoShared

Shared returns the DiscoShared for communication between k and p.

type DiscoPublic 

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

DiscoPublic is the public portion of a DiscoPrivate.

func DiscoPublicFromRaw32 

func DiscoPublicFromRaw32(raw mem.RO) DiscoPublic

DiscoPublicFromRaw32 parses a 32-byte raw value as a DiscoPublic.

This should be used only when deserializing a DiscoPublic from a binary protocol.

func (DiscoPublic) AppendText 

func (k DiscoPublic) AppendText(b []byte) ([]byte, error)

AppendText implements encoding.TextAppender.

func (DiscoPublic) AppendTo 

func (k DiscoPublic) AppendTo(buf []byte) []byte

AppendTo appends k, serialized as a 32-byte binary value, to buf. Returns the new slice.

func (DiscoPublic) Compare 

func (k DiscoPublic) Compare(l DiscoPublic) int

Compare returns an integer comparing DiscoPublic k and l lexicographically. The result will be 0 if k == l, -1 if k < l, and +1 if k > l. This is useful for situations requiring only one node in a pair to perform some operation, e.g. probing UDP path lifetime.

func (DiscoPublic) IsZero 

func (k DiscoPublic) IsZero() bool

IsZero reports whether k is the zero value.

func (DiscoPublic) MarshalText 

func (k DiscoPublic) MarshalText() ([]byte, error)

MarshalText implements encoding.TextMarshaler.

func (DiscoPublic) Raw32 deprecated 

func (k DiscoPublic) Raw32() [32]byte

Raw32 returns k encoded as 32 raw bytes.

Deprecated: only needed for a temporary compat shim in tailcfg, do not add more uses.

func (DiscoPublic) ShortString 

func (k DiscoPublic) ShortString() string

ShortString returns the Tailscale conventional debug representation of a disco key.

func (DiscoPublic) String 

func (k DiscoPublic) String() string

String returns the output of MarshalText as a string.

func (*DiscoPublic) UnmarshalText 

func (k *DiscoPublic) UnmarshalText(b []byte) error

MarshalText implements encoding.TextUnmarshaler.

type DiscoShared 

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

func (DiscoShared) Equal 

func (k DiscoShared) Equal(other DiscoShared) bool

Equal reports whether k and other are the same key.

func (DiscoShared) IsZero 

func (k DiscoShared) IsZero() bool

func (DiscoShared) Open 

func (k DiscoShared) Open(ciphertext []byte) (cleartext []byte, ok bool)

Open opens the NaCl box ciphertext, which must be a value created by Seal, and returns the inner cleartext if ciphertext is a valid box using shared secret k.

func (DiscoShared) Seal 

func (k DiscoShared) Seal(cleartext []byte) (ciphertext []byte)

Seal wraps cleartext into a NaCl box (see golang.org/x/crypto/nacl), using k as the shared secret and a random nonce.

type MachinePrecomputedSharedKey 

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

MachinePrecomputedSharedKey is a precomputed shared NaCl box shared key.

func (MachinePrecomputedSharedKey) Open 

func (k MachinePrecomputedSharedKey) Open(ciphertext []byte) (cleartext []byte, ok bool)

Open opens the NaCl box ciphertext, which must be a value created by MachinePrecomputedSharedKey.Seal or MachinePrivate.SealTo, and returns the inner cleartext if ciphertext is a valid box for the shared key k.

func (MachinePrecomputedSharedKey) Seal 

func (k MachinePrecomputedSharedKey) Seal(cleartext []byte) (ciphertext []byte)

Seal wraps cleartext into a NaCl box (see golang.org/x/crypto/nacl) using the shared key k as generated by MachinePrivate.SharedKey.

The returned ciphertext is a 24-byte nonce concatenated with the box value.

type MachinePrivate 

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

MachinePrivate is a machine key, used for communication with the Tailscale coordination server.

func NewMachine 

func NewMachine() MachinePrivate

NewMachine creates and returns a new machine private key.

func (MachinePrivate) AppendText 

func (k MachinePrivate) AppendText(b []byte) ([]byte, error)

AppendText implements encoding.TextAppender.

func (MachinePrivate) Equal 

func (k MachinePrivate) Equal(other MachinePrivate) bool

Equal reports whether k and other are the same key.

func (MachinePrivate) IsZero 

func (k MachinePrivate) IsZero() bool

IsZero reports whether k is the zero value.

func (MachinePrivate) MarshalText 

func (k MachinePrivate) MarshalText() ([]byte, error)

MarshalText implements encoding.TextMarshaler.

func (MachinePrivate) OpenFrom 

func (k MachinePrivate) OpenFrom(p MachinePublic, ciphertext []byte) (cleartext []byte, ok bool)

OpenFrom opens the NaCl box ciphertext, which must be a value created by SealTo, and returns the inner cleartext if ciphertext is a valid box from p to k.

func (MachinePrivate) Public 

func (k MachinePrivate) Public() MachinePublic

Public returns the MachinePublic for k. Panics if MachinePrivate is zero.

func (MachinePrivate) SealTo 

func (k MachinePrivate) SealTo(p MachinePublic, cleartext []byte) (ciphertext []byte)

SealTo wraps cleartext into a NaCl box (see golang.org/x/crypto/nacl) to p, authenticated from k, using a random nonce.

The returned ciphertext is a 24-byte nonce concatenated with the box value.

func (MachinePrivate) SharedKey 

func (k MachinePrivate) SharedKey(p MachinePublic) MachinePrecomputedSharedKey

SharedKey returns the precomputed Nacl box shared key between k and p.

func (*MachinePrivate) UnmarshalText 

func (k *MachinePrivate) UnmarshalText(b []byte) error

MarshalText implements encoding.TextUnmarshaler.

func (MachinePrivate) UntypedBytes deprecated 

func (k MachinePrivate) UntypedBytes() []byte

UntypedBytes returns k, encoded as an untyped 64-character hex string.

Deprecated: this function is risky to use, because it produces serialized values that do not identify themselves as a MachinePrivate, allowing other code to potentially parse it back in as the wrong key type. For new uses that don't require this specific raw byte serialization, please use MarshalText/UnmarshalText.

type MachinePublic 

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

MachinePublic is the public portion of a a MachinePrivate.

func MachinePublicFromRaw32 

func MachinePublicFromRaw32(raw mem.RO) MachinePublic

MachinePublicFromRaw32 parses a 32-byte raw value as a MachinePublic.

This should be used only when deserializing a MachinePublic from a binary protocol.

func ParseMachinePublicUntyped deprecated 

func ParseMachinePublicUntyped(raw mem.RO) (MachinePublic, error)

ParseMachinePublicUntyped parses an untyped 64-character hex value as a MachinePublic.

Deprecated: this function is risky to use, because it cannot verify that the hex string was intended to be a MachinePublic. This can lead to accidentally decoding one type of key as another. For new uses that don't require backwards compatibility with the untyped string format, please use MarshalText/UnmarshalText.

func (MachinePublic) AppendText 

func (k MachinePublic) AppendText(b []byte) ([]byte, error)

AppendText implements encoding.TextAppender.

func (MachinePublic) IsZero 

func (k MachinePublic) IsZero() bool

IsZero reports whether k is the zero value.

func (MachinePublic) MarshalText 

func (k MachinePublic) MarshalText() ([]byte, error)

MarshalText implements encoding.TextMarshaler.

func (MachinePublic) ShortString 

func (k MachinePublic) ShortString() string

ShortString returns the Tailscale conventional debug representation of a public key: the first five base64 digits of the key, in square brackets.

func (MachinePublic) String 

func (k MachinePublic) String() string

String returns the output of MarshalText as a string.

func (*MachinePublic) UnmarshalText 

func (k *MachinePublic) UnmarshalText(b []byte) error

MarshalText implements encoding.TextUnmarshaler.

func (MachinePublic) UntypedBytes deprecated 

func (k MachinePublic) UntypedBytes() []byte

UntypedBytes returns k, encoded as an untyped 64-character hex string.

Deprecated: this function is risky to use, because it produces serialized values that do not identify themselves as a MachinePublic, allowing other code to potentially parse it back in as the wrong key type. For new uses that don't require this specific raw byte serialization, please use MarshalText/UnmarshalText.

func (MachinePublic) UntypedHexString deprecated 

func (k MachinePublic) UntypedHexString() string

UntypedHexString returns k, encoded as an untyped 64-character hex string.

Deprecated: this function is risky to use, because it produces serialized values that do not identify themselves as a MachinePublic, allowing other code to potentially parse it back in as the wrong key type. For new uses that don't require backwards compatibility with the untyped string format, please use MarshalText/UnmarshalText.

type NLPrivate 

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

NLPrivate is a node-managed network-lock key, used for signing node-key signatures and authority update messages.

func NewNLPrivate 

func NewNLPrivate() NLPrivate

NewNLPrivate creates and returns a new network-lock key.

func (NLPrivate) AppendText 

func (k NLPrivate) AppendText(b []byte) ([]byte, error)

AppendText implements encoding.TextAppender.

func (NLPrivate) Equal 

func (k NLPrivate) Equal(other NLPrivate) bool

Equal reports whether k and other are the same key.

func (NLPrivate) IsZero 

func (k NLPrivate) IsZero() bool

IsZero reports whether k is the zero value.

func (NLPrivate) KeyID 

func (k NLPrivate) KeyID() tkatype.KeyID

KeyID returns an identifier for this key.

func (NLPrivate) MarshalText 

func (k NLPrivate) MarshalText() ([]byte, error)

MarshalText implements encoding.TextMarshaler.

func (NLPrivate) Public 

func (k NLPrivate) Public() NLPublic

Public returns the public component of this key.

func (NLPrivate) SignAUM 

func (k NLPrivate) SignAUM(sigHash tkatype.AUMSigHash) ([]tkatype.Signature, error)

SignAUM implements tka.Signer.

func (NLPrivate) SignNKS 

func (k NLPrivate) SignNKS(sigHash tkatype.NKSSigHash) ([]byte, error)

SignNKS signs the tka.NodeKeySignature identified by sigHash.

func (*NLPrivate) UnmarshalText 

func (k *NLPrivate) UnmarshalText(b []byte) error

MarshalText implements encoding.TextUnmarshaler.

type NLPublic 

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

NLPublic is the public portion of a a NLPrivate.

func NLPublicFromEd25519Unsafe 

func NLPublicFromEd25519Unsafe(public ed25519.PublicKey) NLPublic

NLPublicFromEd25519Unsafe converts an ed25519 public key into a type of NLPublic.

New uses of this function should be avoided, as its possible to accidentally construct an NLPublic from a non network-lock key.

func (NLPublic) AppendText 

func (k NLPublic) AppendText(b []byte) ([]byte, error)

AppendText implements encoding.TextAppender.

func (NLPublic) CLIString 

func (k NLPublic) CLIString() string

CLIString returns a marshalled representation suitable for use with tailnet lock commands, of the form tlpub:<hex> instead of the nlpub:<hex> form emitted by MarshalText. Both forms can be decoded by UnmarshalText.

func (NLPublic) Equal 

func (k NLPublic) Equal(other NLPublic) bool

Equal reports whether k and other are the same key.

func (NLPublic) IsZero 

func (k NLPublic) IsZero() bool

IsZero reports whether k is the zero value.

func (NLPublic) KeyID 

func (k NLPublic) KeyID() tkatype.KeyID

KeyID returns a tkatype.KeyID that can be used with a tka.Authority.

func (NLPublic) MarshalText 

func (k NLPublic) MarshalText() ([]byte, error)

MarshalText implements encoding.TextMarshaler, emitting a representation of the form nlpub:<hex>.

func (*NLPublic) UnmarshalText 

func (k *NLPublic) UnmarshalText(b []byte) error

UnmarshalText implements encoding.TextUnmarshaler. This function is able to decode both the CLI form (tlpub:<hex>) & the regular form (nlpub:<hex>).

func (NLPublic) Verifier 

func (k NLPublic) Verifier() ed25519.PublicKey

Verifier returns a ed25519.PublicKey that can be used to verify signatures.

type NodePrivate 

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

NodePrivate is a node key, used for WireGuard tunnels and communication with DERP servers.

func NewNode 

func NewNode() NodePrivate

NewNode creates and returns a new node private key.

func NodePrivateFromRaw32 deprecated 

func NodePrivateFromRaw32(raw mem.RO) NodePrivate

NodePrivateFromRaw32 parses a 32-byte raw value as a NodePrivate.

Deprecated: only needed to cast from legacy node private key types, do not add more uses unrelated to #3206.

func ParseNodePrivateUntyped 

func ParseNodePrivateUntyped(raw mem.RO) (NodePrivate, error)

func (NodePrivate) AppendText 

func (k NodePrivate) AppendText(b []byte) ([]byte, error)

AppendText implements encoding.TextAppender.

func (NodePrivate) Equal 

func (k NodePrivate) Equal(other NodePrivate) bool

Equal reports whether k and other are the same key.

func (NodePrivate) IsZero 

func (k NodePrivate) IsZero() bool

IsZero reports whether k is the zero value.

func (NodePrivate) MarshalText 

func (k NodePrivate) MarshalText() ([]byte, error)

MarshalText implements encoding.TextMarshaler.

func (NodePrivate) OpenFrom 

func (k NodePrivate) OpenFrom(p NodePublic, ciphertext []byte) (cleartext []byte, ok bool)

OpenFrom opens the NaCl box ciphertext, which must be a value created by SealTo, and returns the inner cleartext if ciphertext is a valid box from p to k.

func (NodePrivate) Public 

func (k NodePrivate) Public() NodePublic

Public returns the NodePublic for k. Panics if NodePrivate is zero.

func (NodePrivate) SealTo 

func (k NodePrivate) SealTo(p NodePublic, cleartext []byte) (ciphertext []byte)

SealTo wraps cleartext into a NaCl box (see golang.org/x/crypto/nacl) to p, authenticated from k, using a random nonce.

The returned ciphertext is a 24-byte nonce concatenated with the box value.

func (NodePrivate) SealToChallenge 

func (k NodePrivate) SealToChallenge(p ChallengePublic, cleartext []byte) (ciphertext []byte)

SealToChallenge is like SealTo, but for a ChallengePublic.

func (*NodePrivate) UnmarshalText 

func (k *NodePrivate) UnmarshalText(b []byte) error

MarshalText implements encoding.TextUnmarshaler.

func (NodePrivate) UntypedHexString 

func (k NodePrivate) UntypedHexString() string

type NodePublic 

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

NodePublic is the public portion of a NodePrivate.

func NodePublicFromRaw32 

func NodePublicFromRaw32(raw mem.RO) NodePublic

NodePublicFromRaw32 parses a 32-byte raw value as a NodePublic.

This should be used only when deserializing a NodePublic from a binary protocol.

func NodePublicWithBadOldPrefix 

func NodePublicWithBadOldPrefix(k NodePublic) NodePublic

NodePublicWithBadOldPrefix returns a copy of k with its leading public key bytes mutated such that it base64's to a ShortString of [bad01] ("bad ol'" [expired node key]).

func ParseNodePublicUntyped deprecated 

func ParseNodePublicUntyped(raw mem.RO) (NodePublic, error)

ParseNodePublicUntyped parses an untyped 64-character hex value as a NodePublic.

Deprecated: this function is risky to use, because it cannot verify that the hex string was intended to be a NodePublic. This can lead to accidentally decoding one type of key as another. For new uses that don't require backwards compatibility with the untyped string format, please use MarshalText/UnmarshalText.

func (NodePublic) AppendText 

func (k NodePublic) AppendText(b []byte) ([]byte, error)

AppendText implements encoding.TextAppender. It appends a typed prefix followed by hex encoded represtation of k to b.

func (NodePublic) AppendTo 

func (k NodePublic) AppendTo(buf []byte) []byte

AppendTo appends k, serialized as a 32-byte binary value, to buf. Returns the new slice.

func (NodePublic) Compare 

func (p NodePublic) Compare(p2 NodePublic) int

Compare returns -1, 0, or 1, depending on whether p orders before p2, using bytes.Compare on the bytes of the public key.

func (NodePublic) IsZero 

func (k NodePublic) IsZero() bool

IsZero reports whether k is the zero value.

func (NodePublic) Less 

func (k NodePublic) Less(other NodePublic) bool

Less reports whether k orders before other, using an undocumented deterministic ordering.

func (NodePublic) MarshalBinary 

func (k NodePublic) MarshalBinary() (data []byte, err error)

MarshalBinary implements encoding.BinaryMarshaler.

func (NodePublic) MarshalText 

func (k NodePublic) MarshalText() ([]byte, error)

MarshalText implements encoding.TextMarshaler. It returns a typed prefix followed by a hex encoded representation of k.

func (NodePublic) Raw32 deprecated 

func (k NodePublic) Raw32() [32]byte

Raw32 returns k encoded as 32 raw bytes.

Deprecated: only needed for a single legacy use in the control server and a few places in the wireguard-go API; don't add more uses.

func (*NodePublic) ReadRawWithoutAllocating 

func (k *NodePublic) ReadRawWithoutAllocating(br *bufio.Reader) error

ReadRawWithoutAllocating initializes k with bytes read from br. The reading is done ~4x slower than io.ReadFull, but in exchange is allocation-free.

func (NodePublic) Shard 

func (p NodePublic) Shard() uint8

Shard returns a uint8 number from a public key with mostly-uniform distribution, suitable for sharding.

func (NodePublic) ShortString 

func (k NodePublic) ShortString() string

ShortString returns the Tailscale conventional debug representation of a public key: the first five base64 digits of the key, in square brackets.

func (NodePublic) String 

func (k NodePublic) String() string

String returns k as a hex-encoded string with a type prefix.

func (*NodePublic) UnmarshalBinary 

func (k *NodePublic) UnmarshalBinary(in []byte) error

UnmarshalBinary implements encoding.BinaryUnmarshaler.

func (*NodePublic) UnmarshalText 

func (k *NodePublic) UnmarshalText(b []byte) error

UnmarshalText implements encoding.TextUnmarshaler. It expects a typed prefix followed by a hex encoded representation of k.

func (NodePublic) UntypedHexString deprecated 

func (k NodePublic) UntypedHexString() string

UntypedHexString returns k, encoded as an untyped 64-character hex string.

Deprecated: this function is risky to use, because it produces serialized values that do not identify themselves as a NodePublic, allowing other code to potentially parse it back in as the wrong key type. For new uses that don't require backwards compatibility with the untyped string format, please use MarshalText/UnmarshalText.

func (NodePublic) WireGuardGoString 

func (k NodePublic) WireGuardGoString() string

WireGuardGoString prints k in the same format used by wireguard-go.

func (NodePublic) WriteRawWithoutAllocating 

func (k NodePublic) WriteRawWithoutAllocating(bw *bufio.Writer) error

WriteRawWithoutAllocating writes out k as 32 bytes to bw. The writing is done ~3x slower than bw.Write, but in exchange is allocation-free.

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