switch to libsodium implementation of aegis256

.gitmodules

@@ -1,4 +0,0 @@
-[submodule "aegis256"]
-	path = aegis256
-	url = https://github.com/angt/aegis256
-	ignore = dirty

mud.c

@@ -22,7 +22,6 @@
 #include <netinet/in.h>
 
 #include <sodium.h>
-#include "aegis256/aegis256.h"
 
 #if !defined MSG_CONFIRM
 #define MSG_CONFIRM 0
@@ -168,18 +167,19 @@ mud_encrypt_opt(const struct mud_crypto_key *k,
                 const struct mud_crypto_opt *c)
 {
     if (k->aes) {
-        unsigned char npub[AEGIS256_NPUBBYTES];
+        unsigned char npub[crypto_aead_aegis256_NPUBBYTES];
 
         memcpy(npub, c->dst, MUD_TIME_SIZE);
         memset(npub + MUD_TIME_SIZE, 0, sizeof(npub) - MUD_TIME_SIZE);
 
-        return aegis256_encrypt(
+        return crypto_aead_aegis256_encrypt(
             c->dst + MUD_TIME_SIZE,
             NULL,
             c->src,
             c->size,
             c->dst,
             MUD_TIME_SIZE,
+	    NULL, // nsec
             npub,
             k->encrypt.key
         );
@@ -208,14 +208,15 @@ mud_decrypt_opt(const struct mud_crypto_key *k,
                 const struct mud_crypto_opt *c)
 {
     if (k->aes) {
-        unsigned char npub[AEGIS256_NPUBBYTES];
+        unsigned char npub[crypto_aead_aegis256_NPUBBYTES];
 
         memcpy(npub, c->src, MUD_TIME_SIZE);
         memset(npub + MUD_TIME_SIZE, 0, sizeof(npub) - MUD_TIME_SIZE);
 
-        return aegis256_decrypt(
+        return crypto_aead_aegis256_decrypt(
             c->dst,
             NULL,
+	    NULL, // nsec
             c->src + MUD_TIME_SIZE,
             c->size - MUD_TIME_SIZE,
             c->src, MUD_TIME_SIZE,
@@ -832,7 +833,7 @@ mud_keyx_init(struct mud *mud, uint64_t now)
 int
 mud_set_aes(struct mud *mud)
 {
-    if (!aegis256_is_available()) {
+    if (!crypto_aead_aegis256_is_available()) {
         errno = ENOTSUP;
         return -1;
     }

test.c

@@ -1,5 +1,4 @@
 #include "mud.c"
-#include "aegis256/aegis256.c"
 
 #include <stdio.h>
 #include <poll.h>