1 files changed, 65 insertions, 0 deletions
diff --git a/providers/implementations/ciphers/cipher_aes_gcm.c b/providers/implementations/ciphers/cipher_aes_gcm.c
new file mode 100644
index 000000000000..3dce743e8409
--- /dev/null
+++ b/providers/implementations/ciphers/cipher_aes_gcm.c
@@ -0,0 +1,65 @@
+/*
+ * Copyright 2019-2024 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
+ */
+
+/*
+ * AES low level APIs are deprecated for public use, but still ok for internal
+ * use where we're using them to implement the higher level EVP interface, as is
+ * the case here.
+ */
+#include "internal/deprecated.h"
+
+/* Dispatch functions for AES GCM mode */
+
+#include "cipher_aes_gcm.h"
+#include "prov/implementations.h"
+#include "prov/providercommon.h"
+
+static void *aes_gcm_newctx(void *provctx, size_t keybits)
+{
+    PROV_AES_GCM_CTX *ctx;
+
+    if (!ossl_prov_is_running())
+        return NULL;
+
+    ctx = OPENSSL_zalloc(sizeof(*ctx));
+    if (ctx != NULL)
+        ossl_gcm_initctx(provctx, &ctx->base, keybits,
+                         ossl_prov_aes_hw_gcm(keybits));
+    return ctx;
+}
+
+static void *aes_gcm_dupctx(void *provctx)
+{
+    PROV_AES_GCM_CTX *ctx = provctx;
+    PROV_AES_GCM_CTX *dctx = NULL;
+
+    if (ctx == NULL)
+        return NULL;
+
+    dctx = OPENSSL_memdup(ctx, sizeof(*ctx));
+    if (dctx != NULL && dctx->base.gcm.key != NULL)
+        dctx->base.gcm.key = &dctx->ks.ks;
+
+    return dctx;
+}
+
+static OSSL_FUNC_cipher_freectx_fn aes_gcm_freectx;
+static void aes_gcm_freectx(void *vctx)
+{
+    PROV_AES_GCM_CTX *ctx = (PROV_AES_GCM_CTX *)vctx;
+
+    OPENSSL_clear_free(ctx,  sizeof(*ctx));
+}
+
+/* ossl_aes128gcm_functions */
+IMPLEMENT_aead_cipher(aes, gcm, GCM, AEAD_FLAGS, 128, 8, 96);
+/* ossl_aes192gcm_functions */
+IMPLEMENT_aead_cipher(aes, gcm, GCM, AEAD_FLAGS, 192, 8, 96);
+/* ossl_aes256gcm_functions */
+IMPLEMENT_aead_cipher(aes, gcm, GCM, AEAD_FLAGS, 256, 8, 96);