6 files changed, 76 insertions, 0 deletions
diff --git a/library/cpp/string_utils/base64/fuzz/generic/ya.make b/library/cpp/string_utils/base64/fuzz/generic/ya.make
new file mode 100644
index 0000000000..d155e2b0a0
--- /dev/null
+++ b/library/cpp/string_utils/base64/fuzz/generic/ya.make
@@ -0,0 +1,12 @@
+OWNER(
+    yazevnul
+    g:util
+)
+
+FUZZ()
+
+PEERDIR(
+    library/cpp/string_utils/base64/fuzz/lib
+)
+
+END()
diff --git a/library/cpp/string_utils/base64/fuzz/lib/main.cpp b/library/cpp/string_utils/base64/fuzz/lib/main.cpp
new file mode 100644
index 0000000000..28547ae7a5
--- /dev/null
+++ b/library/cpp/string_utils/base64/fuzz/lib/main.cpp
@@ -0,0 +1,13 @@
+#include <library/cpp/string_utils/base64/base64.h>
+
+#include <util/system/types.h>
+#include <util/system/yassert.h>
+
+extern "C" int LLVMFuzzerTestOneInput(const ui8* data, size_t size) {
+    const TStringBuf example{reinterpret_cast<const char*>(data), size};
+    const auto converted = Base64Decode(Base64Encode(example));
+
+    Y_VERIFY(example == converted);
+
+    return 0;
+}
diff --git a/library/cpp/string_utils/base64/fuzz/lib/ya.make b/library/cpp/string_utils/base64/fuzz/lib/ya.make
new file mode 100644
index 0000000000..7b981b86a3
--- /dev/null
+++ b/library/cpp/string_utils/base64/fuzz/lib/ya.make
@@ -0,0 +1,16 @@
+OWNER(
+    yazevnul
+    g:util
+)
+
+LIBRARY()
+
+SRCS(
+    main.cpp
+)
+
+PEERDIR(
+    library/cpp/string_utils/base64
+)
+
+END()
diff --git a/library/cpp/string_utils/base64/fuzz/uneven/main.cpp b/library/cpp/string_utils/base64/fuzz/uneven/main.cpp
new file mode 100644
index 0000000000..915e81a7e5
--- /dev/null
+++ b/library/cpp/string_utils/base64/fuzz/uneven/main.cpp
@@ -0,0 +1,10 @@
+#include <library/cpp/string_utils/base64/base64.h>
+
+#include <util/system/types.h>
+#include <util/system/yassert.h>
+
+extern "C" int LLVMFuzzerTestOneInput(const ui8* data, size_t size) {
+    const TStringBuf example{reinterpret_cast<const char*>(data), size};
+    Y_UNUSED(Base64DecodeUneven(example));
+    return 0;
+}
diff --git a/library/cpp/string_utils/base64/fuzz/uneven/ya.make b/library/cpp/string_utils/base64/fuzz/uneven/ya.make
new file mode 100644
index 0000000000..18cb18ef52
--- /dev/null
+++ b/library/cpp/string_utils/base64/fuzz/uneven/ya.make
@@ -0,0 +1,15 @@
+FUZZ()
+
+OWNER(
+    g:util
+)
+
+SRCS(
+    main.cpp
+)
+
+PEERDIR(
+    library/cpp/string_utils/base64
+)
+
+END()
diff --git a/library/cpp/string_utils/base64/fuzz/ya.make b/library/cpp/string_utils/base64/fuzz/ya.make
new file mode 100644
index 0000000000..bef82061c4
--- /dev/null
+++ b/library/cpp/string_utils/base64/fuzz/ya.make
@@ -0,0 +1,10 @@
+OWNER(
+    yazevnul
+    g:util
+)
+
+RECURSE(
+    generic
+    lib
+    uneven
+)