1 files changed, 89 insertions, 0 deletions
diff --git a/libs/libsodium/src/crypto_secretbox/xsalsa20poly1305/secretbox_xsalsa20poly1305.c b/libs/libsodium/src/crypto_secretbox/xsalsa20poly1305/secretbox_xsalsa20poly1305.c
new file mode 100644
index 0000000000..7240050dfd
--- /dev/null
+++ b/libs/libsodium/src/crypto_secretbox/xsalsa20poly1305/secretbox_xsalsa20poly1305.c
@@ -0,0 +1,89 @@
+#include "crypto_onetimeauth_poly1305.h"
+#include "crypto_secretbox_xsalsa20poly1305.h"
+#include "crypto_stream_xsalsa20.h"
+#include "randombytes.h"
+
+int
+crypto_secretbox_xsalsa20poly1305(unsigned char *c, const unsigned char *m,
+                                  unsigned long long mlen,
+                                  const unsigned char *n,
+                                  const unsigned char *k)
+{
+    int i;
+
+    if (mlen < 32) {
+        return -1;
+    }
+    crypto_stream_xsalsa20_xor(c, m, mlen, n, k);
+    crypto_onetimeauth_poly1305(c + 16, c + 32, mlen - 32, c);
+    for (i = 0; i < 16; ++i) {
+        c[i] = 0;
+    }
+    return 0;
+}
+
+int
+crypto_secretbox_xsalsa20poly1305_open(unsigned char *m, const unsigned char *c,
+                                       unsigned long long clen,
+                                       const unsigned char *n,
+                                       const unsigned char *k)
+{
+    unsigned char subkey[32];
+    int           i;
+
+    if (clen < 32) {
+        return -1;
+    }
+    crypto_stream_xsalsa20(subkey, 32, n, k);
+    if (crypto_onetimeauth_poly1305_verify(c + 16, c + 32,
+                                           clen - 32, subkey) != 0) {
+        return -1;
+    }
+    crypto_stream_xsalsa20_xor(m, c, clen, n, k);
+    for (i = 0; i < 32; ++i) {
+        m[i] = 0;
+    }
+    return 0;
+}
+
+size_t
+crypto_secretbox_xsalsa20poly1305_keybytes(void)
+{
+    return crypto_secretbox_xsalsa20poly1305_KEYBYTES;
+}
+
+size_t
+crypto_secretbox_xsalsa20poly1305_noncebytes(void)
+{
+    return crypto_secretbox_xsalsa20poly1305_NONCEBYTES;
+}
+
+size_t
+crypto_secretbox_xsalsa20poly1305_zerobytes(void)
+{
+    return crypto_secretbox_xsalsa20poly1305_ZEROBYTES;
+}
+
+size_t
+crypto_secretbox_xsalsa20poly1305_boxzerobytes(void)
+{
+    return crypto_secretbox_xsalsa20poly1305_BOXZEROBYTES;
+}
+
+size_t
+crypto_secretbox_xsalsa20poly1305_macbytes(void)
+{
+    return crypto_secretbox_xsalsa20poly1305_MACBYTES;
+}
+
+size_t
+crypto_secretbox_xsalsa20poly1305_messagebytes_max(void)
+{
+    return crypto_secretbox_xsalsa20poly1305_MESSAGEBYTES_MAX;
+}
+
+void
+crypto_secretbox_xsalsa20poly1305_keygen(unsigned char k[crypto_secretbox_xsalsa20poly1305_KEYBYTES])
+{
+    randombytes_buf(k, crypto_secretbox_xsalsa20poly1305_KEYBYTES);
+}