1 files changed, 0 insertions, 428 deletions
diff --git a/vendor/github.com/docker/libtrust/ec_key.go b/vendor/github.com/docker/libtrust/ec_key.go
deleted file mode 100644
index 00bbe4b3c..000000000
--- a/vendor/github.com/docker/libtrust/ec_key.go
+++ /dev/null
@@ -1,428 +0,0 @@
-package libtrust
-
-import (
-	"crypto"
-	"crypto/ecdsa"
-	"crypto/elliptic"
-	"crypto/rand"
-	"crypto/x509"
-	"encoding/json"
-	"encoding/pem"
-	"errors"
-	"fmt"
-	"io"
-	"math/big"
-)
-
-/*
- * EC DSA PUBLIC KEY
- */
-
-// ecPublicKey implements a libtrust.PublicKey using elliptic curve digital
-// signature algorithms.
-type ecPublicKey struct {
-	*ecdsa.PublicKey
-	curveName          string
-	signatureAlgorithm *signatureAlgorithm
-	extended           map[string]interface{}
-}
-
-func fromECPublicKey(cryptoPublicKey *ecdsa.PublicKey) (*ecPublicKey, error) {
-	curve := cryptoPublicKey.Curve
-
-	switch {
-	case curve == elliptic.P256():
-		return &ecPublicKey{cryptoPublicKey, "P-256", es256, map[string]interface{}{}}, nil
-	case curve == elliptic.P384():
-		return &ecPublicKey{cryptoPublicKey, "P-384", es384, map[string]interface{}{}}, nil
-	case curve == elliptic.P521():
-		return &ecPublicKey{cryptoPublicKey, "P-521", es512, map[string]interface{}{}}, nil
-	default:
-		return nil, errors.New("unsupported elliptic curve")
-	}
-}
-
-// KeyType returns the key type for elliptic curve keys, i.e., "EC".
-func (k *ecPublicKey) KeyType() string {
-	return "EC"
-}
-
-// CurveName returns the elliptic curve identifier.
-// Possible values are "P-256", "P-384", and "P-521".
-func (k *ecPublicKey) CurveName() string {
-	return k.curveName
-}
-
-// KeyID returns a distinct identifier which is unique to this Public Key.
-func (k *ecPublicKey) KeyID() string {
-	return keyIDFromCryptoKey(k)
-}
-
-func (k *ecPublicKey) String() string {
-	return fmt.Sprintf("EC Public Key <%s>", k.KeyID())
-}
-
-// Verify verifyies the signature of the data in the io.Reader using this
-// PublicKey. The alg parameter should identify the digital signature
-// algorithm which was used to produce the signature and should be supported
-// by this public key. Returns a nil error if the signature is valid.
-func (k *ecPublicKey) Verify(data io.Reader, alg string, signature []byte) error {
-	// For EC keys there is only one supported signature algorithm depending
-	// on the curve parameters.
-	if k.signatureAlgorithm.HeaderParam() != alg {
-		return fmt.Errorf("unable to verify signature: EC Public Key with curve %q does not support signature algorithm %q", k.curveName, alg)
-	}
-
-	// signature is the concatenation of (r, s), base64Url encoded.
-	sigLength := len(signature)
-	expectedOctetLength := 2 * ((k.Params().BitSize + 7) >> 3)
-	if sigLength != expectedOctetLength {
-		return fmt.Errorf("signature length is %d octets long, should be %d", sigLength, expectedOctetLength)
-	}
-
-	rBytes, sBytes := signature[:sigLength/2], signature[sigLength/2:]
-	r := new(big.Int).SetBytes(rBytes)
-	s := new(big.Int).SetBytes(sBytes)
-
-	hasher := k.signatureAlgorithm.HashID().New()
-	_, err := io.Copy(hasher, data)
-	if err != nil {
-		return fmt.Errorf("error reading data to sign: %s", err)
-	}
-	hash := hasher.Sum(nil)
-
-	if !ecdsa.Verify(k.PublicKey, hash, r, s) {
-		return errors.New("invalid signature")
-	}
-
-	return nil
-}
-
-// CryptoPublicKey returns the internal object which can be used as a
-// crypto.PublicKey for use with other standard library operations. The type
-// is either *rsa.PublicKey or *ecdsa.PublicKey
-func (k *ecPublicKey) CryptoPublicKey() crypto.PublicKey {
-	return k.PublicKey
-}
-
-func (k *ecPublicKey) toMap() map[string]interface{} {
-	jwk := make(map[string]interface{})
-	for k, v := range k.extended {
-		jwk[k] = v
-	}
-	jwk["kty"] = k.KeyType()
-	jwk["kid"] = k.KeyID()
-	jwk["crv"] = k.CurveName()
-
-	xBytes := k.X.Bytes()
-	yBytes := k.Y.Bytes()
-	octetLength := (k.Params().BitSize + 7) >> 3
-	// MUST include leading zeros in the output so that x, y are each
-	// *octetLength* bytes long.
-	xBuf := make([]byte, octetLength-len(xBytes), octetLength)
-	yBuf := make([]byte, octetLength-len(yBytes), octetLength)
-	xBuf = append(xBuf, xBytes...)
-	yBuf = append(yBuf, yBytes...)
-
-	jwk["x"] = joseBase64UrlEncode(xBuf)
-	jwk["y"] = joseBase64UrlEncode(yBuf)
-
-	return jwk
-}
-
-// MarshalJSON serializes this Public Key using the JWK JSON serialization format for
-// elliptic curve keys.
-func (k *ecPublicKey) MarshalJSON() (data []byte, err error) {
-	return json.Marshal(k.toMap())
-}
-
-// PEMBlock serializes this Public Key to DER-encoded PKIX format.
-func (k *ecPublicKey) PEMBlock() (*pem.Block, error) {
-	derBytes, err := x509.MarshalPKIXPublicKey(k.PublicKey)
-	if err != nil {
-		return nil, fmt.Errorf("unable to serialize EC PublicKey to DER-encoded PKIX format: %s", err)
-	}
-	k.extended["kid"] = k.KeyID() // For display purposes.
-	return createPemBlock("PUBLIC KEY", derBytes, k.extended)
-}
-
-func (k *ecPublicKey) AddExtendedField(field string, value interface{}) {
-	k.extended[field] = value
-}
-
-func (k *ecPublicKey) GetExtendedField(field string) interface{} {
-	v, ok := k.extended[field]
-	if !ok {
-		return nil
-	}
-	return v
-}
-
-func ecPublicKeyFromMap(jwk map[string]interface{}) (*ecPublicKey, error) {
-	// JWK key type (kty) has already been determined to be "EC".
-	// Need to extract 'crv', 'x', 'y', and 'kid' and check for
-	// consistency.
-
-	// Get the curve identifier value.
-	crv, err := stringFromMap(jwk, "crv")
-	if err != nil {
-		return nil, fmt.Errorf("JWK EC Public Key curve identifier: %s", err)
-	}
-
-	var (
-		curve  elliptic.Curve
-		sigAlg *signatureAlgorithm
-	)
-
-	switch {
-	case crv == "P-256":
-		curve = elliptic.P256()
-		sigAlg = es256
-	case crv == "P-384":
-		curve = elliptic.P384()
-		sigAlg = es384
-	case crv == "P-521":
-		curve = elliptic.P521()
-		sigAlg = es512
-	default:
-		return nil, fmt.Errorf("JWK EC Public Key curve identifier not supported: %q\n", crv)
-	}
-
-	// Get the X and Y coordinates for the public key point.
-	xB64Url, err := stringFromMap(jwk, "x")
-	if err != nil {
-		return nil, fmt.Errorf("JWK EC Public Key x-coordinate: %s", err)
-	}
-	x, err := parseECCoordinate(xB64Url, curve)
-	if err != nil {
-		return nil, fmt.Errorf("JWK EC Public Key x-coordinate: %s", err)
-	}
-
-	yB64Url, err := stringFromMap(jwk, "y")
-	if err != nil {
-		return nil, fmt.Errorf("JWK EC Public Key y-coordinate: %s", err)
-	}
-	y, err := parseECCoordinate(yB64Url, curve)
-	if err != nil {
-		return nil, fmt.Errorf("JWK EC Public Key y-coordinate: %s", err)
-	}
-
-	key := &ecPublicKey{
-		PublicKey: &ecdsa.PublicKey{Curve: curve, X: x, Y: y},
-		curveName: crv, signatureAlgorithm: sigAlg,
-	}
-
-	// Key ID is optional too, but if it exists, it should match the key.
-	_, ok := jwk["kid"]
-	if ok {
-		kid, err := stringFromMap(jwk, "kid")
-		if err != nil {
-			return nil, fmt.Errorf("JWK EC Public Key ID: %s", err)
-		}
-		if kid != key.KeyID() {
-			return nil, fmt.Errorf("JWK EC Public Key ID does not match: %s", kid)
-		}
-	}
-
-	key.extended = jwk
-
-	return key, nil
-}
-
-/*
- * EC DSA PRIVATE KEY
- */
-
-// ecPrivateKey implements a JWK Private Key using elliptic curve digital signature
-// algorithms.
-type ecPrivateKey struct {
-	ecPublicKey
-	*ecdsa.PrivateKey
-}
-
-func fromECPrivateKey(cryptoPrivateKey *ecdsa.PrivateKey) (*ecPrivateKey, error) {
-	publicKey, err := fromECPublicKey(&cryptoPrivateKey.PublicKey)
-	if err != nil {
-		return nil, err
-	}
-
-	return &ecPrivateKey{*publicKey, cryptoPrivateKey}, nil
-}
-
-// PublicKey returns the Public Key data associated with this Private Key.
-func (k *ecPrivateKey) PublicKey() PublicKey {
-	return &k.ecPublicKey
-}
-
-func (k *ecPrivateKey) String() string {
-	return fmt.Sprintf("EC Private Key <%s>", k.KeyID())
-}
-
-// Sign signs the data read from the io.Reader using a signature algorithm supported
-// by the elliptic curve private key. If the specified hashing algorithm is
-// supported by this key, that hash function is used to generate the signature
-// otherwise the the default hashing algorithm for this key is used. Returns
-// the signature and the name of the JWK signature algorithm used, e.g.,
-// "ES256", "ES384", "ES512".
-func (k *ecPrivateKey) Sign(data io.Reader, hashID crypto.Hash) (signature []byte, alg string, err error) {
-	// Generate a signature of the data using the internal alg.
-	// The given hashId is only a suggestion, and since EC keys only support
-	// on signature/hash algorithm given the curve name, we disregard it for
-	// the elliptic curve JWK signature implementation.
-	hasher := k.signatureAlgorithm.HashID().New()
-	_, err = io.Copy(hasher, data)
-	if err != nil {
-		return nil, "", fmt.Errorf("error reading data to sign: %s", err)
-	}
-	hash := hasher.Sum(nil)
-
-	r, s, err := ecdsa.Sign(rand.Reader, k.PrivateKey, hash)
-	if err != nil {
-		return nil, "", fmt.Errorf("error producing signature: %s", err)
-	}
-	rBytes, sBytes := r.Bytes(), s.Bytes()
-	octetLength := (k.ecPublicKey.Params().BitSize + 7) >> 3
-	// MUST include leading zeros in the output
-	rBuf := make([]byte, octetLength-len(rBytes), octetLength)
-	sBuf := make([]byte, octetLength-len(sBytes), octetLength)
-
-	rBuf = append(rBuf, rBytes...)
-	sBuf = append(sBuf, sBytes...)
-
-	signature = append(rBuf, sBuf...)
-	alg = k.signatureAlgorithm.HeaderParam()
-
-	return
-}
-
-// CryptoPrivateKey returns the internal object which can be used as a
-// crypto.PublicKey for use with other standard library operations. The type
-// is either *rsa.PublicKey or *ecdsa.PublicKey
-func (k *ecPrivateKey) CryptoPrivateKey() crypto.PrivateKey {
-	return k.PrivateKey
-}
-
-func (k *ecPrivateKey) toMap() map[string]interface{} {
-	jwk := k.ecPublicKey.toMap()
-
-	dBytes := k.D.Bytes()
-	// The length of this octet string MUST be ceiling(log-base-2(n)/8)
-	// octets (where n is the order of the curve). This is because the private
-	// key d must be in the interval [1, n-1] so the bitlength of d should be
-	// no larger than the bitlength of n-1. The easiest way to find the octet
-	// length is to take bitlength(n-1), add 7 to force a carry, and shift this
-	// bit sequence right by 3, which is essentially dividing by 8 and adding
-	// 1 if there is any remainder. Thus, the private key value d should be
-	// output to (bitlength(n-1)+7)>>3 octets.
-	n := k.ecPublicKey.Params().N
-	octetLength := (new(big.Int).Sub(n, big.NewInt(1)).BitLen() + 7) >> 3
-	// Create a buffer with the necessary zero-padding.
-	dBuf := make([]byte, octetLength-len(dBytes), octetLength)
-	dBuf = append(dBuf, dBytes...)
-
-	jwk["d"] = joseBase64UrlEncode(dBuf)
-
-	return jwk
-}
-
-// MarshalJSON serializes this Private Key using the JWK JSON serialization format for
-// elliptic curve keys.
-func (k *ecPrivateKey) MarshalJSON() (data []byte, err error) {
-	return json.Marshal(k.toMap())
-}
-
-// PEMBlock serializes this Private Key to DER-encoded PKIX format.
-func (k *ecPrivateKey) PEMBlock() (*pem.Block, error) {
-	derBytes, err := x509.MarshalECPrivateKey(k.PrivateKey)
-	if err != nil {
-		return nil, fmt.Errorf("unable to serialize EC PrivateKey to DER-encoded PKIX format: %s", err)
-	}
-	k.extended["keyID"] = k.KeyID() // For display purposes.
-	return createPemBlock("EC PRIVATE KEY", derBytes, k.extended)
-}
-
-func ecPrivateKeyFromMap(jwk map[string]interface{}) (*ecPrivateKey, error) {
-	dB64Url, err := stringFromMap(jwk, "d")
-	if err != nil {
-		return nil, fmt.Errorf("JWK EC Private Key: %s", err)
-	}
-
-	// JWK key type (kty) has already been determined to be "EC".
-	// Need to extract the public key information, then extract the private
-	// key value 'd'.
-	publicKey, err := ecPublicKeyFromMap(jwk)
-	if err != nil {
-		return nil, err
-	}
-
-	d, err := parseECPrivateParam(dB64Url, publicKey.Curve)
-	if err != nil {
-		return nil, fmt.Errorf("JWK EC Private Key d-param: %s", err)
-	}
-
-	key := &ecPrivateKey{
-		ecPublicKey: *publicKey,
-		PrivateKey: &ecdsa.PrivateKey{
-			PublicKey: *publicKey.PublicKey,
-			D:         d,
-		},
-	}
-
-	return key, nil
-}
-
-/*
- *	Key Generation Functions.
- */
-
-func generateECPrivateKey(curve elliptic.Curve) (k *ecPrivateKey, err error) {
-	k = new(ecPrivateKey)
-	k.PrivateKey, err = ecdsa.GenerateKey(curve, rand.Reader)
-	if err != nil {
-		return nil, err
-	}
-
-	k.ecPublicKey.PublicKey = &k.PrivateKey.PublicKey
-	k.extended = make(map[string]interface{})
-
-	return
-}
-
-// GenerateECP256PrivateKey generates a key pair using elliptic curve P-256.
-func GenerateECP256PrivateKey() (PrivateKey, error) {
-	k, err := generateECPrivateKey(elliptic.P256())
-	if err != nil {
-		return nil, fmt.Errorf("error generating EC P-256 key: %s", err)
-	}
-
-	k.curveName = "P-256"
-	k.signatureAlgorithm = es256
-
-	return k, nil
-}
-
-// GenerateECP384PrivateKey generates a key pair using elliptic curve P-384.
-func GenerateECP384PrivateKey() (PrivateKey, error) {
-	k, err := generateECPrivateKey(elliptic.P384())
-	if err != nil {
-		return nil, fmt.Errorf("error generating EC P-384 key: %s", err)
-	}
-
-	k.curveName = "P-384"
-	k.signatureAlgorithm = es384
-
-	return k, nil
-}
-
-// GenerateECP521PrivateKey generates aß key pair using elliptic curve P-521.
-func GenerateECP521PrivateKey() (PrivateKey, error) {
-	k, err := generateECPrivateKey(elliptic.P521())
-	if err != nil {
-		return nil, fmt.Errorf("error generating EC P-521 key: %s", err)
-	}
-
-	k.curveName = "P-521"
-	k.signatureAlgorithm = es512
-
-	return k, nil
-}