Move plugins to external folder

applications/external/totp/services/hmac/sha512.h

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+/* Declarations of functions and data types used for SHA512 and SHA384 sum
+   library functions.
+   Copyright (C) 2005-2006, 2008-2022 Free Software Foundation, Inc.
+
+   This file 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.
+
+   This file 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/>.  */
+
+#pragma once
+
+#include <stdio.h>
+#include "u64.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+enum { SHA512_DIGEST_SIZE = 512 / 8 };
+
+/* Structure to save state of computation between the single steps.  */
+struct sha512_ctx {
+    u64 state[8];
+
+    u64 total[2];
+    size_t buflen; /* ≥ 0, ≤ 256 */
+    u64 buffer[32]; /* 256 bytes; the first buflen bytes are in use */
+};
+
+/* Initialize structure containing state of computation. */
+extern void sha512_init_ctx(struct sha512_ctx* ctx);
+
+/* Starting with the result of former calls of this function (or the
+   initialization function update the context for the next LEN bytes
+   starting at BUFFER.
+   It is necessary that LEN is a multiple of 128!!! */
+extern void sha512_process_block(const void* buffer, size_t len, struct sha512_ctx* ctx);
+
+/* Starting with the result of former calls of this function (or the
+   initialization function update the context for the next LEN bytes
+   starting at BUFFER.
+   It is NOT required that LEN is a multiple of 128.  */
+extern void sha512_process_bytes(const void* buffer, size_t len, struct sha512_ctx* ctx);
+
+/* Process the remaining bytes in the buffer and put result from CTX
+   in first 64 (48) bytes following RESBUF.  The result is always in little
+   endian byte order, so that a byte-wise output yields to the wanted
+   ASCII representation of the message digest.  */
+extern void* sha512_finish_ctx(struct sha512_ctx* ctx, void* restrict resbuf);
+
+/* Put result from CTX in first 64 (48) bytes following RESBUF.  The result is
+   always in little endian byte order, so that a byte-wise output yields
+   to the wanted ASCII representation of the message digest.
+
+   IMPORTANT: On some systems it is required that RESBUF is correctly
+   aligned for a 32 bits value.  */
+extern void* sha512_read_ctx(const struct sha512_ctx* ctx, void* restrict resbuf);
+
+/* Compute SHA512 message digest for LEN bytes beginning at BUFFER.
+   The result is always in little endian byte order, so that a byte-wise
+   output yields to the wanted ASCII representation of the message
+   digest.  */
+extern void* sha512_buffer(const char* buffer, size_t len, void* restrict resblock);
+
+#ifdef __cplusplus
+}
+#endif
+
+/*
+ * Hey Emacs!
+ * Local Variables:
+ * coding: utf-8
+ * End:
+ */