1 files changed, 54 insertions, 0 deletions
diff --git a/providers/implementations/ciphers/cipher_sm4_ccm.c b/providers/implementations/ciphers/cipher_sm4_ccm.c
new file mode 100644
index 000000000000..3af84d85b7dc
--- /dev/null
+++ b/providers/implementations/ciphers/cipher_sm4_ccm.c
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2021-2023 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+/* Dispatch functions for SM4 CCM mode */
+
+#include "cipher_sm4_ccm.h"
+#include "prov/implementations.h"
+#include "prov/providercommon.h"
+
+static OSSL_FUNC_cipher_freectx_fn sm4_ccm_freectx;
+
+static void *sm4_ccm_newctx(void *provctx, size_t keybits)
+{
+    PROV_SM4_CCM_CTX *ctx;
+
+    if (!ossl_prov_is_running())
+        return NULL;
+
+    ctx = OPENSSL_zalloc(sizeof(*ctx));
+    if (ctx != NULL)
+        ossl_ccm_initctx(&ctx->base, keybits, ossl_prov_sm4_hw_ccm(keybits));
+    return ctx;
+}
+
+static void *sm4_ccm_dupctx(void *provctx)
+{
+    PROV_SM4_CCM_CTX *ctx = provctx;
+    PROV_SM4_CCM_CTX *dctx = NULL;
+
+    if (ctx == NULL)
+        return NULL;
+
+    dctx = OPENSSL_memdup(ctx, sizeof(*ctx));
+    if (dctx != NULL && dctx->base.ccm_ctx.key != NULL)
+        dctx->base.ccm_ctx.key = &dctx->ks.ks;
+
+    return dctx;
+}
+
+static void sm4_ccm_freectx(void *vctx)
+{
+    PROV_SM4_CCM_CTX *ctx = (PROV_SM4_CCM_CTX *)vctx;
+
+    OPENSSL_clear_free(ctx,  sizeof(*ctx));
+}
+
+/* sm4128ccm functions */
+IMPLEMENT_aead_cipher(sm4, ccm, CCM, AEAD_FLAGS, 128, 8, 96);