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-rw-r--r--securecookie.go4
1 files changed, 4 insertions, 0 deletions
diff --git a/securecookie.go b/securecookie.go
index 61af390..a34f851 100644
--- a/securecookie.go
+++ b/securecookie.go
@@ -506,6 +506,10 @@ func decode(value []byte) ([]byte, error) {
// GenerateRandomKey creates a random key with the given length in bytes.
// On failure, returns nil.
//
+// Note that keys created using `GenerateRandomKey()` are not automatically
+// persisted. New keys will be created when the application is restarted, and
+// previously issued cookies will not be able to be decoded.
+//
// Callers should explicitly check for the possibility of a nil return, treat
// it as a failure of the system random number generator, and not continue.
func GenerateRandomKey(length int) []byte {