1 files changed, 49 insertions, 0 deletions

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
+}