From 9e8e0b390897c84cad53ebe9ed2d1d331a5394d9 Mon Sep 17 00:00:00 2001
From: Aidan Coyle <packrat386@gmail.com>
Date: Wed, 14 Oct 2020 15:02:37 +0000
Subject: [PATCH] ssh: improve error message for KeyboardInteractiveChallenge

Fixes golang/go#41823

Change-Id: I4653f23239bdf2ab472d3d15c6653b89ebf7ccd4
GitHub-Last-Rev: 179b3ee0efc7b4733da9fbbd8e5ec73a72ef8156
GitHub-Pull-Request: golang/crypto#158
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/259902
Trust: Roland Shoemaker <roland@golang.org>
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
---
 ssh/client_auth.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ssh/client_auth.go b/ssh/client_auth.go
index f326565..c611aeb 100644
--- a/ssh/client_auth.go
+++ b/ssh/client_auth.go
@@ -471,7 +471,7 @@ func (cb KeyboardInteractiveChallenge) auth(session []byte, user string, c packe
 		}
 
 		if len(answers) != len(prompts) {
-			return authFailure, nil, errors.New("ssh: not enough answers from keyboard-interactive callback")
+			return authFailure, nil, fmt.Errorf("ssh: incorrect number of answers from keyboard-interactive callback %d (expected %d)", len(answers), len(prompts))
 		}
 		responseLength := 1 + 4
 		for _, a := range answers {