diff --git a/src/libsodium/Makefile.am b/src/libsodium/Makefile.am
index 58132e35..99ad68d4 100644
--- a/src/libsodium/Makefile.am
+++ b/src/libsodium/Makefile.am
@@ -10,6 +10,7 @@ libsodium_la_SOURCES = \
 	crypto_auth/hmacsha512256/ref/api.h \
 	crypto_auth/hmacsha512256/ref/hmac_hmacsha512256.c \
 	crypto_auth/hmacsha512256/ref/verify_hmacsha512256.c \
+	crypto_box/crypto_box.c \
 	crypto_box/curve25519xsalsa20poly1305/ref/api.h \
 	crypto_box/curve25519xsalsa20poly1305/ref/after_curve25519xsalsa20poly1305.c \
 	crypto_box/curve25519xsalsa20poly1305/ref/before_curve25519xsalsa20poly1305.c \
diff --git a/src/libsodium/crypto_box/crypto_box.c b/src/libsodium/crypto_box/crypto_box.c
new file mode 100644
index 00000000..cbdaded7
--- /dev/null
+++ b/src/libsodium/crypto_box/crypto_box.c
@@ -0,0 +1,41 @@
+
+#include "crypto_box.h"
+
+int crypto_box_keypair(unsigned char *pk, unsigned char *sk)
+{
+    return crypto_box_curve25519xsalsa20poly1305_keypair(pk, sk);
+}
+
+int crypto_box_beforenm(unsigned char *k, const unsigned char *pk,
+                        const unsigned char *sk)
+{
+    return crypto_box_curve25519xsalsa20poly1305_beforenm(k, pk, sk);
+}
+
+int crypto_box_afternm(unsigned char *c, const unsigned char *m,
+                       unsigned long long mlen, const unsigned char *n,
+                       const unsigned char *k)
+{
+    return crypto_box_curve25519xsalsa20poly1305_afternm(c, m, mlen, n, k);
+}
+
+int crypto_box_open_afternm(unsigned char *m, const unsigned char *c,
+                            unsigned long long clen, const unsigned char *n,
+                            const unsigned char *k)
+{
+    return crypto_box_curve25519xsalsa20poly1305_open_afternm(m, c, clen, m, k);
+}
+
+int crypto_box(unsigned char *c, const unsigned char *m,
+               unsigned long long mlen, const unsigned char *n,
+               const unsigned char *pk, const unsigned char *sk)
+{
+    return crypto_box_curve25519xsalsa20poly1305(c, m, mlen, n, pk, sk);
+}
+
+int crypto_box_open(unsigned char *m, const unsigned char *c,
+                    unsigned long long clen, const unsigned char *n,
+                    const unsigned char *pk, const unsigned char *sk)
+{
+    return crypto_box_curve25519xsalsa20poly1305_open(m, c, clen, n, pk, sk);
+}
diff --git a/src/libsodium/include/sodium/crypto_box.h b/src/libsodium/include/sodium/crypto_box.h
index ecca5b37..e132f5bf 100644
--- a/src/libsodium/include/sodium/crypto_box.h
+++ b/src/libsodium/include/sodium/crypto_box.h
@@ -3,12 +3,6 @@
 
 #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
@@ -18,4 +12,25 @@
 #define crypto_box_MACBYTES crypto_box_curve25519xsalsa20poly1305_MACBYTES
 #define crypto_box_PRIMITIVE "curve25519xsalsa20poly1305"
 
+int crypto_box_keypair(unsigned char *pk, unsigned char *sk);
+
+int crypto_box_beforenm(unsigned char *k, const unsigned char *pk,
+                        const unsigned char *sk);
+
+int crypto_box_afternm(unsigned char *c, const unsigned char *m,
+                       unsigned long long mlen, const unsigned char *n,
+                       const unsigned char *k);
+
+int crypto_box_open_afternm(unsigned char *m, const unsigned char *c,
+                            unsigned long long clen, const unsigned char *n,
+                            const unsigned char *k);
+
+int crypto_box(unsigned char *c, const unsigned char *m,
+               unsigned long long mlen, const unsigned char *n,
+               const unsigned char *pk, const unsigned char *sk);
+
+int crypto_box_open(unsigned char *m, const unsigned char *c,
+                    unsigned long long clen, const unsigned char *n,
+                    const unsigned char *pk, const unsigned char *sk);
+
 #endif