Update IDF to a0468b2 (#2108)

* Update IDF to a0468b2

* add missing ld file

* Fix PIO builds and change coex policy

tools/sdk/include/libsodium/sodium/crypto_stream_chacha20.h

@@ -0,0 +1,92 @@
+#ifndef crypto_stream_chacha20_H
+#define crypto_stream_chacha20_H
+
+/*
+ *  WARNING: This is just a stream cipher. It is NOT authenticated encryption.
+ *  While it provides some protection against eavesdropping, it does NOT
+ *  provide any security against active attacks.
+ *  Unless you know what you're doing, what you are looking for is probably
+ *  the crypto_box functions.
+ */
+
+#include <stddef.h>
+#include <stdint.h>
+#include "export.h"
+
+#ifdef __cplusplus
+# ifdef __GNUC__
+#  pragma GCC diagnostic ignored "-Wlong-long"
+# endif
+extern "C" {
+#endif
+
+#define crypto_stream_chacha20_KEYBYTES 32U
+SODIUM_EXPORT
+size_t crypto_stream_chacha20_keybytes(void);
+
+#define crypto_stream_chacha20_NONCEBYTES 8U
+SODIUM_EXPORT
+size_t crypto_stream_chacha20_noncebytes(void);
+
+/* ChaCha20 with a 64-bit nonce and a 64-bit counter, as originally designed */
+
+SODIUM_EXPORT
+int crypto_stream_chacha20(unsigned char *c, unsigned long long clen,
+                           const unsigned char *n, const unsigned char *k);
+
+SODIUM_EXPORT
+int crypto_stream_chacha20_xor(unsigned char *c, const unsigned char *m,
+                               unsigned long long mlen, const unsigned char *n,
+                               const unsigned char *k);
+
+SODIUM_EXPORT
+int crypto_stream_chacha20_xor_ic(unsigned char *c, const unsigned char *m,
+                                  unsigned long long mlen,
+                                  const unsigned char *n, uint64_t ic,
+                                  const unsigned char *k);
+
+SODIUM_EXPORT
+void crypto_stream_chacha20_keygen(unsigned char k[crypto_stream_chacha20_KEYBYTES]);
+
+/* ChaCha20 with a 96-bit nonce and a 32-bit counter (IETF) */
+
+#define crypto_stream_chacha20_ietf_KEYBYTES 32U
+SODIUM_EXPORT
+size_t crypto_stream_chacha20_ietf_keybytes(void);
+
+#define crypto_stream_chacha20_ietf_NONCEBYTES 12U
+SODIUM_EXPORT
+size_t crypto_stream_chacha20_ietf_noncebytes(void);
+
+SODIUM_EXPORT
+int crypto_stream_chacha20_ietf(unsigned char *c, unsigned long long clen,
+                                const unsigned char *n, const unsigned char *k);
+
+SODIUM_EXPORT
+int crypto_stream_chacha20_ietf_xor(unsigned char *c, const unsigned char *m,
+                                    unsigned long long mlen, const unsigned char *n,
+                                    const unsigned char *k);
+
+SODIUM_EXPORT
+int crypto_stream_chacha20_ietf_xor_ic(unsigned char *c, const unsigned char *m,
+                                       unsigned long long mlen,
+                                       const unsigned char *n, uint32_t ic,
+                                       const unsigned char *k);
+
+SODIUM_EXPORT
+void crypto_stream_chacha20_ietf_keygen(unsigned char k[crypto_stream_chacha20_ietf_KEYBYTES]);
+
+/* ------------------------------------------------------------------------- */
+
+int _crypto_stream_chacha20_pick_best_implementation(void);
+
+/* Aliases */
+
+#define crypto_stream_chacha20_IETF_KEYBYTES crypto_stream_chacha20_ietf_KEYBYTES
+#define crypto_stream_chacha20_IETF_NONCEBYTES crypto_stream_chacha20_ietf_NONCEBYTES
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif