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Diffstat (limited to 'vendor/k8s.io/client-go/util/keyutil/key.go')
-rw-r--r--vendor/k8s.io/client-go/util/keyutil/key.go323
1 files changed, 0 insertions, 323 deletions
diff --git a/vendor/k8s.io/client-go/util/keyutil/key.go b/vendor/k8s.io/client-go/util/keyutil/key.go
deleted file mode 100644
index 83c2c6254..000000000
--- a/vendor/k8s.io/client-go/util/keyutil/key.go
+++ /dev/null
@@ -1,323 +0,0 @@
-/*
-Copyright 2018 The Kubernetes Authors.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
- http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-// Package keyutil contains utilities for managing public/private key pairs.
-package keyutil
-
-import (
- "crypto"
- "crypto/ecdsa"
- "crypto/elliptic"
- cryptorand "crypto/rand"
- "crypto/rsa"
- "crypto/x509"
- "encoding/pem"
- "fmt"
- "io/ioutil"
- "os"
- "path/filepath"
-)
-
-const (
- // ECPrivateKeyBlockType is a possible value for pem.Block.Type.
- ECPrivateKeyBlockType = "EC PRIVATE KEY"
- // RSAPrivateKeyBlockType is a possible value for pem.Block.Type.
- RSAPrivateKeyBlockType = "RSA PRIVATE KEY"
- // PrivateKeyBlockType is a possible value for pem.Block.Type.
- PrivateKeyBlockType = "PRIVATE KEY"
- // PublicKeyBlockType is a possible value for pem.Block.Type.
- PublicKeyBlockType = "PUBLIC KEY"
-)
-
-// MakeEllipticPrivateKeyPEM creates an ECDSA private key
-func MakeEllipticPrivateKeyPEM() ([]byte, error) {
- privateKey, err := ecdsa.GenerateKey(elliptic.P256(), cryptorand.Reader)
- if err != nil {
- return nil, err
- }
-
- derBytes, err := x509.MarshalECPrivateKey(privateKey)
- if err != nil {
- return nil, err
- }
-
- privateKeyPemBlock := &pem.Block{
- Type: ECPrivateKeyBlockType,
- Bytes: derBytes,
- }
- return pem.EncodeToMemory(privateKeyPemBlock), nil
-}
-
-// WriteKey writes the pem-encoded key data to keyPath.
-// The key file will be created with file mode 0600.
-// If the key file already exists, it will be overwritten.
-// The parent directory of the keyPath will be created as needed with file mode 0755.
-func WriteKey(keyPath string, data []byte) error {
- if err := os.MkdirAll(filepath.Dir(keyPath), os.FileMode(0755)); err != nil {
- return err
- }
- return ioutil.WriteFile(keyPath, data, os.FileMode(0600))
-}
-
-// LoadOrGenerateKeyFile looks for a key in the file at the given path. If it
-// can't find one, it will generate a new key and store it there.
-func LoadOrGenerateKeyFile(keyPath string) (data []byte, wasGenerated bool, err error) {
- loadedData, err := ioutil.ReadFile(keyPath)
- // Call verifyKeyData to ensure the file wasn't empty/corrupt.
- if err == nil && verifyKeyData(loadedData) {
- return loadedData, false, err
- }
- if !os.IsNotExist(err) {
- return nil, false, fmt.Errorf("error loading key from %s: %v", keyPath, err)
- }
-
- generatedData, err := MakeEllipticPrivateKeyPEM()
- if err != nil {
- return nil, false, fmt.Errorf("error generating key: %v", err)
- }
- if err := WriteKey(keyPath, generatedData); err != nil {
- return nil, false, fmt.Errorf("error writing key to %s: %v", keyPath, err)
- }
- return generatedData, true, nil
-}
-
-// MarshalPrivateKeyToPEM converts a known private key type of RSA or ECDSA to
-// a PEM encoded block or returns an error.
-func MarshalPrivateKeyToPEM(privateKey crypto.PrivateKey) ([]byte, error) {
- switch t := privateKey.(type) {
- case *ecdsa.PrivateKey:
- derBytes, err := x509.MarshalECPrivateKey(t)
- if err != nil {
- return nil, err
- }
- block := &pem.Block{
- Type: ECPrivateKeyBlockType,
- Bytes: derBytes,
- }
- return pem.EncodeToMemory(block), nil
- case *rsa.PrivateKey:
- block := &pem.Block{
- Type: RSAPrivateKeyBlockType,
- Bytes: x509.MarshalPKCS1PrivateKey(t),
- }
- return pem.EncodeToMemory(block), nil
- default:
- return nil, fmt.Errorf("private key is not a recognized type: %T", privateKey)
- }
-}
-
-// PrivateKeyFromFile returns the private key in rsa.PrivateKey or ecdsa.PrivateKey format from a given PEM-encoded file.
-// Returns an error if the file could not be read or if the private key could not be parsed.
-func PrivateKeyFromFile(file string) (interface{}, error) {
- data, err := ioutil.ReadFile(file)
- if err != nil {
- return nil, err
- }
- key, err := ParsePrivateKeyPEM(data)
- if err != nil {
- return nil, fmt.Errorf("error reading private key file %s: %v", file, err)
- }
- return key, nil
-}
-
-// PublicKeysFromFile returns the public keys in rsa.PublicKey or ecdsa.PublicKey format from a given PEM-encoded file.
-// Reads public keys from both public and private key files.
-func PublicKeysFromFile(file string) ([]interface{}, error) {
- data, err := ioutil.ReadFile(file)
- if err != nil {
- return nil, err
- }
- keys, err := ParsePublicKeysPEM(data)
- if err != nil {
- return nil, fmt.Errorf("error reading public key file %s: %v", file, err)
- }
- return keys, nil
-}
-
-// verifyKeyData returns true if the provided data appears to be a valid private key.
-func verifyKeyData(data []byte) bool {
- if len(data) == 0 {
- return false
- }
- _, err := ParsePrivateKeyPEM(data)
- return err == nil
-}
-
-// ParsePrivateKeyPEM returns a private key parsed from a PEM block in the supplied data.
-// Recognizes PEM blocks for "EC PRIVATE KEY", "RSA PRIVATE KEY", or "PRIVATE KEY"
-func ParsePrivateKeyPEM(keyData []byte) (interface{}, error) {
- var privateKeyPemBlock *pem.Block
- for {
- privateKeyPemBlock, keyData = pem.Decode(keyData)
- if privateKeyPemBlock == nil {
- break
- }
-
- switch privateKeyPemBlock.Type {
- case ECPrivateKeyBlockType:
- // ECDSA Private Key in ASN.1 format
- if key, err := x509.ParseECPrivateKey(privateKeyPemBlock.Bytes); err == nil {
- return key, nil
- }
- case RSAPrivateKeyBlockType:
- // RSA Private Key in PKCS#1 format
- if key, err := x509.ParsePKCS1PrivateKey(privateKeyPemBlock.Bytes); err == nil {
- return key, nil
- }
- case PrivateKeyBlockType:
- // RSA or ECDSA Private Key in unencrypted PKCS#8 format
- if key, err := x509.ParsePKCS8PrivateKey(privateKeyPemBlock.Bytes); err == nil {
- return key, nil
- }
- }
-
- // tolerate non-key PEM blocks for compatibility with things like "EC PARAMETERS" blocks
- // originally, only the first PEM block was parsed and expected to be a key block
- }
-
- // we read all the PEM blocks and didn't recognize one
- return nil, fmt.Errorf("data does not contain a valid RSA or ECDSA private key")
-}
-
-// ParsePublicKeysPEM is a helper function for reading an array of rsa.PublicKey or ecdsa.PublicKey from a PEM-encoded byte array.
-// Reads public keys from both public and private key files.
-func ParsePublicKeysPEM(keyData []byte) ([]interface{}, error) {
- var block *pem.Block
- keys := []interface{}{}
- for {
- // read the next block
- block, keyData = pem.Decode(keyData)
- if block == nil {
- break
- }
-
- // test block against parsing functions
- if privateKey, err := parseRSAPrivateKey(block.Bytes); err == nil {
- keys = append(keys, &privateKey.PublicKey)
- continue
- }
- if publicKey, err := parseRSAPublicKey(block.Bytes); err == nil {
- keys = append(keys, publicKey)
- continue
- }
- if privateKey, err := parseECPrivateKey(block.Bytes); err == nil {
- keys = append(keys, &privateKey.PublicKey)
- continue
- }
- if publicKey, err := parseECPublicKey(block.Bytes); err == nil {
- keys = append(keys, publicKey)
- continue
- }
-
- // tolerate non-key PEM blocks for backwards compatibility
- // originally, only the first PEM block was parsed and expected to be a key block
- }
-
- if len(keys) == 0 {
- return nil, fmt.Errorf("data does not contain any valid RSA or ECDSA public keys")
- }
- return keys, nil
-}
-
-// parseRSAPublicKey parses a single RSA public key from the provided data
-func parseRSAPublicKey(data []byte) (*rsa.PublicKey, error) {
- var err error
-
- // Parse the key
- var parsedKey interface{}
- if parsedKey, err = x509.ParsePKIXPublicKey(data); err != nil {
- if cert, err := x509.ParseCertificate(data); err == nil {
- parsedKey = cert.PublicKey
- } else {
- return nil, err
- }
- }
-
- // Test if parsed key is an RSA Public Key
- var pubKey *rsa.PublicKey
- var ok bool
- if pubKey, ok = parsedKey.(*rsa.PublicKey); !ok {
- return nil, fmt.Errorf("data doesn't contain valid RSA Public Key")
- }
-
- return pubKey, nil
-}
-
-// parseRSAPrivateKey parses a single RSA private key from the provided data
-func parseRSAPrivateKey(data []byte) (*rsa.PrivateKey, error) {
- var err error
-
- // Parse the key
- var parsedKey interface{}
- if parsedKey, err = x509.ParsePKCS1PrivateKey(data); err != nil {
- if parsedKey, err = x509.ParsePKCS8PrivateKey(data); err != nil {
- return nil, err
- }
- }
-
- // Test if parsed key is an RSA Private Key
- var privKey *rsa.PrivateKey
- var ok bool
- if privKey, ok = parsedKey.(*rsa.PrivateKey); !ok {
- return nil, fmt.Errorf("data doesn't contain valid RSA Private Key")
- }
-
- return privKey, nil
-}
-
-// parseECPublicKey parses a single ECDSA public key from the provided data
-func parseECPublicKey(data []byte) (*ecdsa.PublicKey, error) {
- var err error
-
- // Parse the key
- var parsedKey interface{}
- if parsedKey, err = x509.ParsePKIXPublicKey(data); err != nil {
- if cert, err := x509.ParseCertificate(data); err == nil {
- parsedKey = cert.PublicKey
- } else {
- return nil, err
- }
- }
-
- // Test if parsed key is an ECDSA Public Key
- var pubKey *ecdsa.PublicKey
- var ok bool
- if pubKey, ok = parsedKey.(*ecdsa.PublicKey); !ok {
- return nil, fmt.Errorf("data doesn't contain valid ECDSA Public Key")
- }
-
- return pubKey, nil
-}
-
-// parseECPrivateKey parses a single ECDSA private key from the provided data
-func parseECPrivateKey(data []byte) (*ecdsa.PrivateKey, error) {
- var err error
-
- // Parse the key
- var parsedKey interface{}
- if parsedKey, err = x509.ParseECPrivateKey(data); err != nil {
- return nil, err
- }
-
- // Test if parsed key is an ECDSA Private Key
- var privKey *ecdsa.PrivateKey
- var ok bool
- if privKey, ok = parsedKey.(*ecdsa.PrivateKey); !ok {
- return nil, fmt.Errorf("data doesn't contain valid ECDSA Private Key")
- }
-
- return privKey, nil
-}