libgcrypt: Import libgcrypt 1.11

We currently use an old version of libgcrypt which results in us having
fewer ciphers and missing on many other improvements.

Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>

grub-core/lib/libgcrypt/cipher/mceliece6688128f.h

@@ -0,0 +1,63 @@
+/* mceliece6688128f.h - Classic McEliece for libgcrypt
+ * Copyright (C) 2023-2024 Simon Josefsson <simon@josefsson.org>
+ *
+ * This file is part of Libgcrypt.
+ *
+ * Libgcrypt is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * Libgcrypt is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program; if not, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ *
+ */
+
+#ifndef MCELIECE6688128F_H
+#define MCELIECE6688128F_H
+
+#include <string.h>
+#include <stdint.h>
+
+#ifdef _GCRYPT_IN_LIBGCRYPT
+/**** Start of the glue code to libgcrypt ****/
+#include "g10lib.h"             /* for GCC_ATTR_UNUSED */
+#include "gcrypt-int.h"
+
+#define mceliece6688128f_keypair _gcry_mceliece6688128f_keypair
+#define mceliece6688128f_enc     _gcry_mceliece6688128f_enc
+#define mceliece6688128f_dec     _gcry_mceliece6688128f_dec
+/**** End of the glue code ****/
+#else
+#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 5 )
+#define GCC_ATTR_UNUSED  __attribute__ ((unused))
+#else
+#define GCC_ATTR_UNUSED
+#endif
+
+#define MCELIECE6688128F_SECRETKEY_SIZE 13932
+#define MCELIECE6688128F_PUBLICKEY_SIZE 1044992
+#define MCELIECE6688128F_CIPHERTEXT_SIZE 208
+#define MCELIECE6688128F_SIZE 32
+#endif
+
+typedef void mceliece6688128f_random_func (void *ctx,
+					   size_t length,
+					   uint8_t *dst);
+
+void
+mceliece6688128f_keypair (uint8_t *pk, uint8_t *sk);
+
+void
+mceliece6688128f_enc (uint8_t *c, uint8_t *k, const uint8_t *pk);
+
+void
+mceliece6688128f_dec (uint8_t *k, const uint8_t *c, const uint8_t *sk);
+
+#endif /* MCELIECE6688128F_H */