diff --git a/repos/gems/recipes/api/aes_cbc_4k/content.mk b/repos/gems/recipes/api/aes_cbc_4k/content.mk
new file mode 100644
index 0000000000..5c3b8e0dc9
--- /dev/null
+++ b/repos/gems/recipes/api/aes_cbc_4k/content.mk
@@ -0,0 +1,14 @@
+MIRROR_FROM_REP_DIR := \
+	include/aes_cbc_4k \
+	src/lib/aes_cbc_4k \
+	lib/import/import-aes_cbc_4k.mk \
+	lib/mk/aes_cbc_4k.mk
+
+content: $(MIRROR_FROM_REP_DIR)
+
+$(MIRROR_FROM_REP_DIR):
+	$(mirror_from_rep_dir)
+
+LICENSE:
+	cp $(GENODE_DIR)/LICENSE $@
+
diff --git a/repos/gems/recipes/api/aes_cbc_4k/hash b/repos/gems/recipes/api/aes_cbc_4k/hash
new file mode 100644
index 0000000000..c6c2349fb2
--- /dev/null
+++ b/repos/gems/recipes/api/aes_cbc_4k/hash
@@ -0,0 +1 @@
+2020-08-04 598c84112a1d18498bd0d802359acd7ca1c68620