From f6c92c5e2d87ab1334648b0d1293771de7aae4a5 Mon Sep 17 00:00:00 2001
From: Rutger Broekhoff
Date: Sat, 30 Dec 2023 14:00:34 +0100
Subject: Implement git-lfs-authenticate

---
 .../github.com/golang-jwt/jwt/v5/signing_method.go | 49 ++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 vendor/github.com/golang-jwt/jwt/v5/signing_method.go

(limited to 'vendor/github.com/golang-jwt/jwt/v5/signing_method.go')

diff --git a/vendor/github.com/golang-jwt/jwt/v5/signing_method.go b/vendor/github.com/golang-jwt/jwt/v5/signing_method.go
new file mode 100644
index 0000000..0d73631
--- /dev/null
+++ b/vendor/github.com/golang-jwt/jwt/v5/signing_method.go
@@ -0,0 +1,49 @@
+package jwt
+
+import (
+	"sync"
+)
+
+var signingMethods = map[string]func() SigningMethod{}
+var signingMethodLock = new(sync.RWMutex)
+
+// SigningMethod can be used add new methods for signing or verifying tokens. It
+// takes a decoded signature as an input in the Verify function and produces a
+// signature in Sign. The signature is then usually base64 encoded as part of a
+// JWT.
+type SigningMethod interface {
+	Verify(signingString string, sig []byte, key interface{}) error // Returns nil if signature is valid
+	Sign(signingString string, key interface{}) ([]byte, error)     // Returns signature or error
+	Alg() string                                                    // returns the alg identifier for this method (example: 'HS256')
+}
+
+// RegisterSigningMethod registers the "alg" name and a factory function for signing method.
+// This is typically done during init() in the method's implementation
+func RegisterSigningMethod(alg string, f func() SigningMethod) {
+	signingMethodLock.Lock()
+	defer signingMethodLock.Unlock()
+
+	signingMethods[alg] = f
+}
+
+// GetSigningMethod retrieves a signing method from an "alg" string
+func GetSigningMethod(alg string) (method SigningMethod) {
+	signingMethodLock.RLock()
+	defer signingMethodLock.RUnlock()
+
+	if methodF, ok := signingMethods[alg]; ok {
+		method = methodF()
+	}
+	return
+}
+
+// GetAlgorithms returns a list of registered "alg" names
+func GetAlgorithms() (algs []string) {
+	signingMethodLock.RLock()
+	defer signingMethodLock.RUnlock()
+
+	for alg := range signingMethods {
+		algs = append(algs, alg)
+	}
+	return
+}
-- 
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