SSH: Fix composition of ECDH key exchange signature.

We need to pad the encoded integers to the full width, so the
signature will have the correct length.

Change-Id: Ic844a5996ed3d8a121847d09aae1a7782ee2c24c
Reviewed-by: Christian Kandeler <christian.kandeler@theqtcompany.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/src/libs/ssh/sshcapabilities.cpp b/src/libs/ssh/sshcapabilities.cpp
index 60dc3e8659..725f01c1a0 100644
--- a/src/libs/ssh/sshcapabilities.cpp
+++ b/src/libs/ssh/sshcapabilities.cpp
@@ -130,5 +130,13 @@ QByteArray SshCapabilities::findBestMatch(const QList<QByteArray> &myCapabilitie
     return commonCapabilities(myCapabilities, serverCapabilities).first();
 }
 
+int SshCapabilities::ecdsaIntegerWidthInBytes(const QByteArray &ecdsaAlgo)
+{
+    if (ecdsaAlgo == PubKeyEcdsa256)
+        return 32;
+    throw SshClientException(SshInternalError, SSH_TR("Unexpected ecdsa algorithm \"%1\"")
+                             .arg(QString::fromLatin1(ecdsaAlgo)));
+}
+
 } // namespace Internal
 } // namespace QSsh