diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 00000000..aa85c56b
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "crypto"]
+	path = crypto
+	url = https://github.com/tg123/sshpiper.crypto
diff --git a/crypto b/crypto
new file mode 160000
index 00000000..e4ffa5b2
--- /dev/null
+++ b/crypto
@@ -0,0 +1 @@
+Subproject commit e4ffa5b2bb808f22c706664d5cd0f83745800fa8
diff --git a/go.mod b/go.mod
index 070e0640..2348d74b 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,7 @@ go 1.18
 
 replace (
 	github.com/jessevdk/go-flags => github.com/tg123/go-flags v1.4.0-globalref
-	golang.org/x/crypto => github.com/tg123/sshpiper.crypto v0.0.0-20211208111020-362b80747471
+	golang.org/x/crypto => ./crypto
 )
 
 require (
diff --git a/go.sum b/go.sum
index 75ef6616..ac8f2428 100644
--- a/go.sum
+++ b/go.sum
@@ -288,8 +288,6 @@ github.com/tg123/remotesigner v0.0.0-20210928104451-7c20285909d1 h1:17rr5yKlOnsx
 github.com/tg123/remotesigner v0.0.0-20210928104451-7c20285909d1/go.mod h1:leliuGRH9ayYYwRo6JO8yg+KyWcltK69XJdLv1x7slM=
 github.com/tg123/sshkey v0.0.0-20201202190454-3bb356f89f1f h1:MOxh2uC27wne9vo2OJqtL2W0Uq3qbBnaOGKgiJA+/fI=
 github.com/tg123/sshkey v0.0.0-20201202190454-3bb356f89f1f/go.mod h1:0NrddipH8l+ho+Cpbs4qrpEaqbNeHUAfhxURhKC1waE=
-github.com/tg123/sshpiper.crypto v0.0.0-20211208111020-362b80747471 h1:6g1rYKp1EW2l9o+wGWvfCllumpWW71m7KpeYAbLBrQc=
-github.com/tg123/sshpiper.crypto v0.0.0-20211208111020-362b80747471/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
 github.com/yuin/goldmark v1.1.25/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.1.32/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=