[VOL-2235] Mocks and interfaces for rw-core
This update consists of mocks that are used by the rw-core
during unit testing. It also includes interfaces used for unit
tests.
Change-Id: I20ca1455c358113c3aa897acc6355e0ddbc614b7
diff --git a/vendor/github.com/dgrijalva/jwt-go/hmac.go b/vendor/github.com/dgrijalva/jwt-go/hmac.go
new file mode 100644
index 0000000..addbe5d
--- /dev/null
+++ b/vendor/github.com/dgrijalva/jwt-go/hmac.go
@@ -0,0 +1,95 @@
+package jwt
+
+import (
+ "crypto"
+ "crypto/hmac"
+ "errors"
+)
+
+// Implements the HMAC-SHA family of signing methods signing methods
+// Expects key type of []byte for both signing and validation
+type SigningMethodHMAC struct {
+ Name string
+ Hash crypto.Hash
+}
+
+// Specific instances for HS256 and company
+var (
+ SigningMethodHS256 *SigningMethodHMAC
+ SigningMethodHS384 *SigningMethodHMAC
+ SigningMethodHS512 *SigningMethodHMAC
+ ErrSignatureInvalid = errors.New("signature is invalid")
+)
+
+func init() {
+ // HS256
+ SigningMethodHS256 = &SigningMethodHMAC{"HS256", crypto.SHA256}
+ RegisterSigningMethod(SigningMethodHS256.Alg(), func() SigningMethod {
+ return SigningMethodHS256
+ })
+
+ // HS384
+ SigningMethodHS384 = &SigningMethodHMAC{"HS384", crypto.SHA384}
+ RegisterSigningMethod(SigningMethodHS384.Alg(), func() SigningMethod {
+ return SigningMethodHS384
+ })
+
+ // HS512
+ SigningMethodHS512 = &SigningMethodHMAC{"HS512", crypto.SHA512}
+ RegisterSigningMethod(SigningMethodHS512.Alg(), func() SigningMethod {
+ return SigningMethodHS512
+ })
+}
+
+func (m *SigningMethodHMAC) Alg() string {
+ return m.Name
+}
+
+// Verify the signature of HSXXX tokens. Returns nil if the signature is valid.
+func (m *SigningMethodHMAC) Verify(signingString, signature string, key interface{}) error {
+ // Verify the key is the right type
+ keyBytes, ok := key.([]byte)
+ if !ok {
+ return ErrInvalidKeyType
+ }
+
+ // Decode signature, for comparison
+ sig, err := DecodeSegment(signature)
+ if err != nil {
+ return err
+ }
+
+ // Can we use the specified hashing method?
+ if !m.Hash.Available() {
+ return ErrHashUnavailable
+ }
+
+ // This signing method is symmetric, so we validate the signature
+ // by reproducing the signature from the signing string and key, then
+ // comparing that against the provided signature.
+ hasher := hmac.New(m.Hash.New, keyBytes)
+ hasher.Write([]byte(signingString))
+ if !hmac.Equal(sig, hasher.Sum(nil)) {
+ return ErrSignatureInvalid
+ }
+
+ // No validation errors. Signature is good.
+ return nil
+}
+
+// Implements the Sign method from SigningMethod for this signing method.
+// Key must be []byte
+func (m *SigningMethodHMAC) Sign(signingString string, key interface{}) (string, error) {
+ if keyBytes, ok := key.([]byte); ok {
+ if !m.Hash.Available() {
+ return "", ErrHashUnavailable
+ }
+
+ hasher := hmac.New(m.Hash.New, keyBytes)
+ hasher.Write([]byte(signingString))
+
+ return EncodeSegment(hasher.Sum(nil)), nil
+ }
+
+ return "", ErrInvalidKeyType
+}