diff --git a/openAPI/src/main/kotlin/jetbrains/exodus/crypto/StreamCipherInputStream.kt b/openAPI/src/main/kotlin/jetbrains/exodus/crypto/StreamCipherInputStream.kt
index f3114ff7d..9b55b0332 100644
--- a/openAPI/src/main/kotlin/jetbrains/exodus/crypto/StreamCipherInputStream.kt
+++ b/openAPI/src/main/kotlin/jetbrains/exodus/crypto/StreamCipherInputStream.kt
@@ -43,7 +43,7 @@ class StreamCipherInputStream(input: InputStream, private val cipherGetter: () -
         val b = bytes.notNull { "Can't read into null array" }
         val read = super.read(b, off, len)
         if (read > 0) {
-            for (i in off until read) {
+            for (i in off until read + off) {
                 b[i] = cipher.crypt(b[i])
             }
             position += read