V1.0.6

packages/artinchip/aic-authorization/authorization/skcipher.h

@@ -0,0 +1,106 @@
+/*
+ * Copyright (c) 2022-2024, ArtInChip Technology Co., Ltd
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Authors:  Xiong Hao <hao.xiong@artinchip.com>
+ */
+
+#ifndef __SKCIPHER_H
+#define __SKCIPHER_H
+
+#include <aic_common.h>
+
+#define CRYPTO_MAX_ALG_NAME 128
+
+struct skcipher_tfm {
+    struct skcipher_alg *alg;
+    void *__crt_ctx;
+};
+
+struct skcipher_request {
+    unsigned int cryptlen;
+    unsigned char *iv;
+    void *src;
+    void *dst;
+    void *__ctx;
+};
+
+struct aic_skcipher_handle {
+    struct skcipher_tfm *tfm;
+    struct skcipher_request *req;
+};
+
+struct crypto_alg {
+    u32 cra_flags;
+    unsigned int cra_blocksize;
+    unsigned int cra_ctxsize;
+    unsigned int cra_alignmask;
+
+    int cra_priority;
+
+    char cra_name[CRYPTO_MAX_ALG_NAME];
+    char cra_driver_name[CRYPTO_MAX_ALG_NAME];
+
+    int (*cra_init)(struct aic_skcipher_handle *handle);
+    void (*cra_exit)(struct aic_skcipher_handle *handle);
+    void (*cra_destroy)(struct crypto_alg *alg);
+};
+
+struct skcipher_alg {
+    int (*setkey)(struct aic_skcipher_handle *handle, const u8 *key,
+                  unsigned int keylen);
+    int (*encrypt)(struct aic_skcipher_handle *handle);
+    int (*decrypt)(struct aic_skcipher_handle *handle);
+    int (*init)(struct aic_skcipher_handle *handle);
+    void (*exit)(struct aic_skcipher_handle *handle);
+
+    unsigned int min_keysize;
+    unsigned int max_keysize;
+    unsigned int ivsize;
+    unsigned int chunksize;
+    unsigned int walksize;
+
+    struct crypto_alg base;
+};
+
+/*
+ * Transform internal helpers.
+ */
+static inline struct skcipher_tfm *
+skcipher_handle_tfm(struct aic_skcipher_handle *handle)
+{
+    return handle->tfm;
+}
+
+static inline struct skcipher_request *
+skcipher_handle_req(struct aic_skcipher_handle *handle)
+{
+    return handle->req;
+}
+
+static inline void *skcipher_request_ctx(struct skcipher_request *req)
+{
+    return req->__ctx;
+}
+
+static inline void *skcipher_tfm_ctx(struct skcipher_tfm *tfm)
+{
+    return tfm->__crt_ctx;
+}
+
+static inline unsigned int skcipher_tfm_ivsize(struct skcipher_tfm *tfm)
+{
+    return tfm->alg->ivsize;
+}
+
+static inline unsigned int skcipher_tfm_blocksize(struct skcipher_tfm *tfm)
+{
+    return tfm->alg->base.cra_blocksize;
+}
+
+struct aic_skcipher_handle *aic_skcipher_init(const char *ciphername,
+                                              u32 flags);
+void aic_skcipher_destroy(struct aic_skcipher_handle *handle);
+
+#endif