Import missing api.h files

src/libsodium/crypto_box/curve25519xsalsa20poly1305/ref/api.h

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+#ifndef crypto_box_H
+#define crypto_box_H
+
+#include "crypto_box_curve25519xsalsa20poly1305.h"
+
+#define crypto_box crypto_box_curve25519xsalsa20poly1305
+#define crypto_box_open crypto_box_curve25519xsalsa20poly1305_open
+#define crypto_box_keypair crypto_box_curve25519xsalsa20poly1305_keypair
+#define crypto_box_beforenm crypto_box_curve25519xsalsa20poly1305_beforenm
+#define crypto_box_afternm crypto_box_curve25519xsalsa20poly1305_afternm
+#define crypto_box_open_afternm crypto_box_curve25519xsalsa20poly1305_open_afternm
+#define crypto_box_PUBLICKEYBYTES crypto_box_curve25519xsalsa20poly1305_PUBLICKEYBYTES
+#define crypto_box_SECRETKEYBYTES crypto_box_curve25519xsalsa20poly1305_SECRETKEYBYTES
+#define crypto_box_BEFORENMBYTES crypto_box_curve25519xsalsa20poly1305_BEFORENMBYTES
+#define crypto_box_NONCEBYTES crypto_box_curve25519xsalsa20poly1305_NONCEBYTES
+#define crypto_box_ZEROBYTES crypto_box_curve25519xsalsa20poly1305_ZEROBYTES
+#define crypto_box_BOXZEROBYTES crypto_box_curve25519xsalsa20poly1305_BOXZEROBYTES
+#define crypto_box_MACBYTES (crypto_box_ZEROBYTES - crypto_box_BOXZEROBYTES)
+#define crypto_box_PRIMITIVE "curve25519xsalsa20poly1305"
+#define crypto_box_IMPLEMENTATION crypto_box_curve25519xsalsa20poly1305_IMPLEMENTATION
+#define crypto_box_VERSION crypto_box_curve25519xsalsa20poly1305_VERSION
+
+#endif

src/libsodium/crypto_hash/sha256/ref/api.h

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+#ifndef crypto_hash_H
+#define crypto_hash_H
+
+#include "crypto_hash_sha256.h"
+
+#define crypto_hash crypto_hash_sha256
+#define crypto_hash_BYTES crypto_hash_sha256_BYTES
+#define crypto_hash_PRIMITIVE "sha256"
+#define crypto_hash_IMPLEMENTATION crypto_hash_sha256_IMPLEMENTATION
+#define crypto_hash_VERSION crypto_hash_sha256_VERSION
+
+#endif