[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/ecdsa.go b/vendor/github.com/dgrijalva/jwt-go/ecdsa.go
new file mode 100644
index 0000000..f977381
--- /dev/null
+++ b/vendor/github.com/dgrijalva/jwt-go/ecdsa.go
@@ -0,0 +1,148 @@
+package jwt
+
+import (
+ "crypto"
+ "crypto/ecdsa"
+ "crypto/rand"
+ "errors"
+ "math/big"
+)
+
+var (
+ // Sadly this is missing from crypto/ecdsa compared to crypto/rsa
+ ErrECDSAVerification = errors.New("crypto/ecdsa: verification error")
+)
+
+// Implements the ECDSA family of signing methods signing methods
+// Expects *ecdsa.PrivateKey for signing and *ecdsa.PublicKey for verification
+type SigningMethodECDSA struct {
+ Name string
+ Hash crypto.Hash
+ KeySize int
+ CurveBits int
+}
+
+// Specific instances for EC256 and company
+var (
+ SigningMethodES256 *SigningMethodECDSA
+ SigningMethodES384 *SigningMethodECDSA
+ SigningMethodES512 *SigningMethodECDSA
+)
+
+func init() {
+ // ES256
+ SigningMethodES256 = &SigningMethodECDSA{"ES256", crypto.SHA256, 32, 256}
+ RegisterSigningMethod(SigningMethodES256.Alg(), func() SigningMethod {
+ return SigningMethodES256
+ })
+
+ // ES384
+ SigningMethodES384 = &SigningMethodECDSA{"ES384", crypto.SHA384, 48, 384}
+ RegisterSigningMethod(SigningMethodES384.Alg(), func() SigningMethod {
+ return SigningMethodES384
+ })
+
+ // ES512
+ SigningMethodES512 = &SigningMethodECDSA{"ES512", crypto.SHA512, 66, 521}
+ RegisterSigningMethod(SigningMethodES512.Alg(), func() SigningMethod {
+ return SigningMethodES512
+ })
+}
+
+func (m *SigningMethodECDSA) Alg() string {
+ return m.Name
+}
+
+// Implements the Verify method from SigningMethod
+// For this verify method, key must be an ecdsa.PublicKey struct
+func (m *SigningMethodECDSA) Verify(signingString, signature string, key interface{}) error {
+ var err error
+
+ // Decode the signature
+ var sig []byte
+ if sig, err = DecodeSegment(signature); err != nil {
+ return err
+ }
+
+ // Get the key
+ var ecdsaKey *ecdsa.PublicKey
+ switch k := key.(type) {
+ case *ecdsa.PublicKey:
+ ecdsaKey = k
+ default:
+ return ErrInvalidKeyType
+ }
+
+ if len(sig) != 2*m.KeySize {
+ return ErrECDSAVerification
+ }
+
+ r := big.NewInt(0).SetBytes(sig[:m.KeySize])
+ s := big.NewInt(0).SetBytes(sig[m.KeySize:])
+
+ // Create hasher
+ if !m.Hash.Available() {
+ return ErrHashUnavailable
+ }
+ hasher := m.Hash.New()
+ hasher.Write([]byte(signingString))
+
+ // Verify the signature
+ if verifystatus := ecdsa.Verify(ecdsaKey, hasher.Sum(nil), r, s); verifystatus == true {
+ return nil
+ } else {
+ return ErrECDSAVerification
+ }
+}
+
+// Implements the Sign method from SigningMethod
+// For this signing method, key must be an ecdsa.PrivateKey struct
+func (m *SigningMethodECDSA) Sign(signingString string, key interface{}) (string, error) {
+ // Get the key
+ var ecdsaKey *ecdsa.PrivateKey
+ switch k := key.(type) {
+ case *ecdsa.PrivateKey:
+ ecdsaKey = k
+ default:
+ return "", ErrInvalidKeyType
+ }
+
+ // Create the hasher
+ if !m.Hash.Available() {
+ return "", ErrHashUnavailable
+ }
+
+ hasher := m.Hash.New()
+ hasher.Write([]byte(signingString))
+
+ // Sign the string and return r, s
+ if r, s, err := ecdsa.Sign(rand.Reader, ecdsaKey, hasher.Sum(nil)); err == nil {
+ curveBits := ecdsaKey.Curve.Params().BitSize
+
+ if m.CurveBits != curveBits {
+ return "", ErrInvalidKey
+ }
+
+ keyBytes := curveBits / 8
+ if curveBits%8 > 0 {
+ keyBytes += 1
+ }
+
+ // We serialize the outpus (r and s) into big-endian byte arrays and pad
+ // them with zeros on the left to make sure the sizes work out. Both arrays
+ // must be keyBytes long, and the output must be 2*keyBytes long.
+ rBytes := r.Bytes()
+ rBytesPadded := make([]byte, keyBytes)
+ copy(rBytesPadded[keyBytes-len(rBytes):], rBytes)
+
+ sBytes := s.Bytes()
+ sBytesPadded := make([]byte, keyBytes)
+ copy(sBytesPadded[keyBytes-len(sBytes):], sBytes)
+
+ out := append(rBytesPadded, sBytesPadded...)
+
+ return EncodeSegment(out), nil
+ } else {
+ return "", err
+ }
+}