1 files changed, 45 insertions, 0 deletions
diff --git a/net/mac80211/aes_ccm.h b/net/mac80211/aes_ccm.h
new file mode 100644
index 000000000..96256193c
--- /dev/null
+++ b/net/mac80211/aes_ccm.h
@@ -0,0 +1,45 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright 2003-2004, Instant802 Networks, Inc.
+ * Copyright 2006, Devicescape Software, Inc.
+ */
+
+#ifndef AES_CCM_H
+#define AES_CCM_H
+
+#include "aead_api.h"
+
+#define CCM_AAD_LEN	32
+
+static inline struct crypto_aead *
+ieee80211_aes_key_setup_encrypt(const u8 key[], size_t key_len, size_t mic_len)
+{
+	return aead_key_setup_encrypt("ccm(aes)", key, key_len, mic_len);
+}
+
+static inline int
+ieee80211_aes_ccm_encrypt(struct crypto_aead *tfm,
+			  u8 *b_0, u8 *aad, u8 *data,
+			  size_t data_len, u8 *mic)
+{
+	return aead_encrypt(tfm, b_0, aad + 2,
+			    be16_to_cpup((__be16 *)aad),
+			    data, data_len, mic);
+}
+
+static inline int
+ieee80211_aes_ccm_decrypt(struct crypto_aead *tfm,
+			  u8 *b_0, u8 *aad, u8 *data,
+			  size_t data_len, u8 *mic)
+{
+	return aead_decrypt(tfm, b_0, aad + 2,
+			    be16_to_cpup((__be16 *)aad),
+			    data, data_len, mic);
+}
+
+static inline void ieee80211_aes_key_free(struct crypto_aead *tfm)
+{
+	return aead_key_free(tfm);
+}
+
+#endif /* AES_CCM_H */