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-rw-r--r--src/modules/filters/utf8utf16.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/modules/filters/utf8utf16.cpp b/src/modules/filters/utf8utf16.cpp
index 9aea6fe..33248a9 100644
--- a/src/modules/filters/utf8utf16.cpp
+++ b/src/modules/filters/utf8utf16.cpp
@@ -23,6 +23,8 @@ char UTF8UTF16::ProcessText(char *text, int maxlen, const SWKey *key, const SWMo
unsigned char significantFirstBits, subsequent;
unsigned short schar;
+ if ((unsigned long)key < 2) // hack, we're en(1)/de(0)ciphering
+ return -1;
len = strlen(text) + 1; // shift string to right of buffer
if (len < maxlen) {
memmove(&text[maxlen - len], text, len);