Adding upstream version 1.34.4.

Signed-off-by: Daniel Baumann <daniel@debian.org>

plugins/common/kafka/scram_client.go

@@ -0,0 +1,35 @@
+package kafka
+
+import (
+	"crypto/sha256"
+	"crypto/sha512"
+	"hash"
+
+	"github.com/xdg/scram"
+)
+
+var SHA256 scram.HashGeneratorFcn = func() hash.Hash { return sha256.New() }
+var SHA512 scram.HashGeneratorFcn = func() hash.Hash { return sha512.New() }
+
+type XDGSCRAMClient struct {
+	*scram.Client
+	*scram.ClientConversation
+	scram.HashGeneratorFcn
+}
+
+func (x *XDGSCRAMClient) Begin(userName, password, authzID string) (err error) {
+	x.Client, err = x.HashGeneratorFcn.NewClient(userName, password, authzID)
+	if err != nil {
+		return err
+	}
+	x.ClientConversation = x.Client.NewConversation()
+	return nil
+}
+
+func (x *XDGSCRAMClient) Step(challenge string) (response string, err error) {
+	return x.ClientConversation.Step(challenge)
+}
+
+func (x *XDGSCRAMClient) Done() bool {
+	return x.ClientConversation.Done()
+}