Implement git-lfs-authenticate

1 files changed, 93 insertions, 0 deletions

diff --git a/vendor/github.com/golang-jwt/jwt/v5/rsa.go b/vendor/github.com/golang-jwt/jwt/v5/rsa.go
new file mode 100644
index 0000000..83cbee6
--- /dev/null
+++ b/vendor/github.com/golang-jwt/jwt/v5/rsa.go
@@ -0,0 +1,93 @@
+package jwt
+
+import (
+        "crypto"
+        "crypto/rand"
+        "crypto/rsa"
+)
+
+// SigningMethodRSA implements the RSA family of signing methods.
+// Expects *rsa.PrivateKey for signing and *rsa.PublicKey for validation
+type SigningMethodRSA struct {
+        Name string
+        Hash crypto.Hash
+}
+
+// Specific instances for RS256 and company
+var (
+        SigningMethodRS256 *SigningMethodRSA
+        SigningMethodRS384 *SigningMethodRSA
+        SigningMethodRS512 *SigningMethodRSA
+)
+
+func init() {
+        // RS256
+        SigningMethodRS256 = &SigningMethodRSA{"RS256", crypto.SHA256}
+        RegisterSigningMethod(SigningMethodRS256.Alg(), func() SigningMethod {
+                return SigningMethodRS256
+        })
+
+        // RS384
+        SigningMethodRS384 = &SigningMethodRSA{"RS384", crypto.SHA384}
+        RegisterSigningMethod(SigningMethodRS384.Alg(), func() SigningMethod {
+                return SigningMethodRS384
+        })
+
+        // RS512
+        SigningMethodRS512 = &SigningMethodRSA{"RS512", crypto.SHA512}
+        RegisterSigningMethod(SigningMethodRS512.Alg(), func() SigningMethod {
+                return SigningMethodRS512
+        })
+}
+
+func (m *SigningMethodRSA) Alg() string {
+        return m.Name
+}
+
+// Verify implements token verification for the SigningMethod
+// For this signing method, must be an *rsa.PublicKey structure.
+func (m *SigningMethodRSA) Verify(signingString string, sig []byte, key interface{}) error {
+        var rsaKey *rsa.PublicKey
+        var ok bool
+
+        if rsaKey, ok = key.(*rsa.PublicKey); !ok {
+                return newError("RSA verify expects *rsa.PublicKey", ErrInvalidKeyType)
+        }
+
+        // Create hasher
+        if !m.Hash.Available() {
+                return ErrHashUnavailable
+        }
+        hasher := m.Hash.New()
+        hasher.Write([]byte(signingString))
+
+        // Verify the signature
+        return rsa.VerifyPKCS1v15(rsaKey, m.Hash, hasher.Sum(nil), sig)
+}
+
+// Sign implements token signing for the SigningMethod
+// For this signing method, must be an *rsa.PrivateKey structure.
+func (m *SigningMethodRSA) Sign(signingString string, key interface{}) ([]byte, error) {
+        var rsaKey *rsa.PrivateKey
+        var ok bool
+
+        // Validate type of key
+        if rsaKey, ok = key.(*rsa.PrivateKey); !ok {
+                return nil, newError("RSA sign expects *rsa.PrivateKey", ErrInvalidKeyType)
+        }
+
+        // Create the hasher
+        if !m.Hash.Available() {
+                return nil, ErrHashUnavailable
+        }
+
+        hasher := m.Hash.New()
+        hasher.Write([]byte(signingString))
+
+        // Sign the string and return the encoded bytes
+        if sigBytes, err := rsa.SignPKCS1v15(rand.Reader, rsaKey, m.Hash, hasher.Sum(nil)); err == nil {
+                return sigBytes, nil
+        } else {
+                return nil, err
+        }
+}