1 files changed, 69 insertions, 0 deletions
diff --git a/crypto/openssl/providers/implementations/ciphers/ciphercommon_gcm_hw.c b/crypto/openssl/providers/implementations/ciphers/ciphercommon_gcm_hw.c
new file mode 100644
index 000000000000..c0a7399640fd
--- /dev/null
+++ b/crypto/openssl/providers/implementations/ciphers/ciphercommon_gcm_hw.c
@@ -0,0 +1,69 @@
+/*
+ * Copyright 2001-2021 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
+ */
+
+#include "prov/ciphercommon.h"
+#include "prov/ciphercommon_gcm.h"
+
+
+int ossl_gcm_setiv(PROV_GCM_CTX *ctx, const unsigned char *iv, size_t ivlen)
+{
+    CRYPTO_gcm128_setiv(&ctx->gcm, iv, ivlen);
+    return 1;
+}
+
+int ossl_gcm_aad_update(PROV_GCM_CTX *ctx, const unsigned char *aad,
+                        size_t aad_len)
+{
+    return CRYPTO_gcm128_aad(&ctx->gcm, aad, aad_len) == 0;
+}
+
+int ossl_gcm_cipher_update(PROV_GCM_CTX *ctx, const unsigned char *in,
+                           size_t len, unsigned char *out)
+{
+    if (ctx->enc) {
+        if (CRYPTO_gcm128_encrypt(&ctx->gcm, in, out, len))
+            return 0;
+    } else {
+        if (CRYPTO_gcm128_decrypt(&ctx->gcm, in, out, len))
+            return 0;
+    }
+    return 1;
+}
+
+int ossl_gcm_cipher_final(PROV_GCM_CTX *ctx, unsigned char *tag)
+{
+    if (ctx->enc) {
+        CRYPTO_gcm128_tag(&ctx->gcm, tag, GCM_TAG_MAX_SIZE);
+        ctx->taglen = GCM_TAG_MAX_SIZE;
+    } else {
+        if (CRYPTO_gcm128_finish(&ctx->gcm, tag, ctx->taglen) != 0)
+            return 0;
+    }
+    return 1;
+}
+
+int ossl_gcm_one_shot(PROV_GCM_CTX *ctx, unsigned char *aad, size_t aad_len,
+                      const unsigned char *in, size_t in_len,
+                      unsigned char *out, unsigned char *tag, size_t tag_len)
+{
+    int ret = 0;
+
+    /* Use saved AAD */
+    if (!ctx->hw->aadupdate(ctx, aad, aad_len))
+        goto err;
+    if (!ctx->hw->cipherupdate(ctx, in, in_len, out))
+        goto err;
+    ctx->taglen = GCM_TAG_MAX_SIZE;
+    if (!ctx->hw->cipherfinal(ctx, tag))
+        goto err;
+    ret = 1;
+
+err:
+    return ret;
+}