1 files changed, 66 insertions, 0 deletions
diff --git a/crypto/aes.c b/crypto/aes.c
new file mode 100644
index 000000000000..ae8385df0ce5
--- /dev/null
+++ b/crypto/aes.c
@@ -0,0 +1,66 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Crypto API support for AES block cipher
+ *
+ * Copyright 2026 Google LLC
+ */
+
+#include <crypto/aes.h>
+#include <crypto/algapi.h>
+#include <linux/module.h>
+
+static_assert(__alignof__(struct aes_key) <= CRYPTO_MINALIGN);
+
+static int crypto_aes_setkey(struct crypto_tfm *tfm, const u8 *in_key,
+			     unsigned int key_len)
+{
+	struct aes_key *key = crypto_tfm_ctx(tfm);
+
+	return aes_preparekey(key, in_key, key_len);
+}
+
+static void crypto_aes_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
+{
+	const struct aes_key *key = crypto_tfm_ctx(tfm);
+
+	aes_encrypt(key, out, in);
+}
+
+static void crypto_aes_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
+{
+	const struct aes_key *key = crypto_tfm_ctx(tfm);
+
+	aes_decrypt(key, out, in);
+}
+
+static struct crypto_alg alg = {
+	.cra_name = "aes",
+	.cra_driver_name = "aes-lib",
+	.cra_priority = 100,
+	.cra_flags = CRYPTO_ALG_TYPE_CIPHER,
+	.cra_blocksize = AES_BLOCK_SIZE,
+	.cra_ctxsize = sizeof(struct aes_key),
+	.cra_module = THIS_MODULE,
+	.cra_u = { .cipher = { .cia_min_keysize = AES_MIN_KEY_SIZE,
+			       .cia_max_keysize = AES_MAX_KEY_SIZE,
+			       .cia_setkey = crypto_aes_setkey,
+			       .cia_encrypt = crypto_aes_encrypt,
+			       .cia_decrypt = crypto_aes_decrypt } }
+};
+
+static int __init crypto_aes_mod_init(void)
+{
+	return crypto_register_alg(&alg);
+}
+module_init(crypto_aes_mod_init);
+
+static void __exit crypto_aes_mod_exit(void)
+{
+	crypto_unregister_alg(&alg);
+}
+module_exit(crypto_aes_mod_exit);
+
+MODULE_DESCRIPTION("Crypto API support for AES block cipher");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_CRYPTO("aes");
+MODULE_ALIAS_CRYPTO("aes-lib");