preparing to build tox from sources

1 files changed, 156 insertions, 0 deletions

diff --git a/libs/libsodium/src/crypto_box/curve25519xsalsa20poly1305/box_curve25519xsalsa20poly1305.c b/libs/libsodium/src/crypto_box/curve25519xsalsa20poly1305/box_curve25519xsalsa20poly1305.c
new file mode 100644
index 0000000000..4c1d62ed43
--- /dev/null
+++ b/libs/libsodium/src/crypto_box/curve25519xsalsa20poly1305/box_curve25519xsalsa20poly1305.c
@@ -0,0 +1,156 @@
+#include <string.h>
+
+#include "crypto_box_curve25519xsalsa20poly1305.h"
+#include "crypto_core_hsalsa20.h"
+#include "crypto_hash_sha512.h"
+#include "crypto_scalarmult_curve25519.h"
+#include "crypto_secretbox_xsalsa20poly1305.h"
+#include "randombytes.h"
+#include "utils.h"
+
+int
+crypto_box_curve25519xsalsa20poly1305_seed_keypair(unsigned char *pk,
+                                                   unsigned char *sk,
+                                                   const unsigned char *seed)
+{
+    unsigned char hash[64];
+
+    crypto_hash_sha512(hash, seed, 32);
+    memcpy(sk, hash, 32);
+    sodium_memzero(hash, sizeof hash);
+
+    return crypto_scalarmult_curve25519_base(pk, sk);
+}
+
+int
+crypto_box_curve25519xsalsa20poly1305_keypair(unsigned char *pk,
+                                              unsigned char *sk)
+{
+    randombytes_buf(sk, 32);
+
+    return crypto_scalarmult_curve25519_base(pk, sk);
+}
+
+int
+crypto_box_curve25519xsalsa20poly1305_beforenm(unsigned char *k,
+                                               const unsigned char *pk,
+                                               const unsigned char *sk)
+{
+    static const unsigned char zero[16] = { 0 };
+    unsigned char s[32];
+
+    if (crypto_scalarmult_curve25519(s, sk, pk) != 0) {
+        return -1;
+    }
+    return crypto_core_hsalsa20(k, zero, s, NULL);
+}
+
+int
+crypto_box_curve25519xsalsa20poly1305_afternm(unsigned char *c,
+                                              const unsigned char *m,
+                                              unsigned long long mlen,
+                                              const unsigned char *n,
+                                              const unsigned char *k)
+{
+    return crypto_secretbox_xsalsa20poly1305(c, m, mlen, n, k);
+}
+
+int
+crypto_box_curve25519xsalsa20poly1305_open_afternm(unsigned char *m,
+                                                   const unsigned char *c,
+                                                   unsigned long long clen,
+                                                   const unsigned char *n,
+                                                   const unsigned char *k)
+{
+    return crypto_secretbox_xsalsa20poly1305_open(m, c, clen, n, k);
+}
+
+int
+crypto_box_curve25519xsalsa20poly1305(unsigned char *c, const unsigned char *m,
+                                      unsigned long long   mlen,
+                                      const unsigned char *n,
+                                      const unsigned char *pk,
+                                      const unsigned char *sk)
+{
+    unsigned char k[crypto_box_curve25519xsalsa20poly1305_BEFORENMBYTES];
+    int           ret;
+
+    if (crypto_box_curve25519xsalsa20poly1305_beforenm(k, pk, sk) != 0) {
+        return -1;
+    }
+    ret = crypto_box_curve25519xsalsa20poly1305_afternm(c, m, mlen, n, k);
+    sodium_memzero(k, sizeof k);
+
+    return ret;
+}
+
+int
+crypto_box_curve25519xsalsa20poly1305_open(
+    unsigned char *m, const unsigned char *c, unsigned long long clen,
+    const unsigned char *n, const unsigned char *pk, const unsigned char *sk)
+{
+    unsigned char k[crypto_box_curve25519xsalsa20poly1305_BEFORENMBYTES];
+    int           ret;
+
+    if (crypto_box_curve25519xsalsa20poly1305_beforenm(k, pk, sk) != 0) {
+        return -1;
+    }
+    ret = crypto_box_curve25519xsalsa20poly1305_open_afternm(m, c, clen, n, k);
+    sodium_memzero(k, sizeof k);
+
+    return ret;
+}
+
+size_t
+crypto_box_curve25519xsalsa20poly1305_seedbytes(void)
+{
+    return crypto_box_curve25519xsalsa20poly1305_SEEDBYTES;
+}
+
+size_t
+crypto_box_curve25519xsalsa20poly1305_publickeybytes(void)
+{
+    return crypto_box_curve25519xsalsa20poly1305_PUBLICKEYBYTES;
+}
+
+size_t
+crypto_box_curve25519xsalsa20poly1305_secretkeybytes(void)
+{
+    return crypto_box_curve25519xsalsa20poly1305_SECRETKEYBYTES;
+}
+
+size_t
+crypto_box_curve25519xsalsa20poly1305_beforenmbytes(void)
+{
+    return crypto_box_curve25519xsalsa20poly1305_BEFORENMBYTES;
+}
+
+size_t
+crypto_box_curve25519xsalsa20poly1305_noncebytes(void)
+{
+    return crypto_box_curve25519xsalsa20poly1305_NONCEBYTES;
+}
+
+size_t
+crypto_box_curve25519xsalsa20poly1305_zerobytes(void)
+{
+    return crypto_box_curve25519xsalsa20poly1305_ZEROBYTES;
+}
+
+size_t
+crypto_box_curve25519xsalsa20poly1305_boxzerobytes(void)
+{
+    return crypto_box_curve25519xsalsa20poly1305_BOXZEROBYTES;
+}
+
+size_t
+crypto_box_curve25519xsalsa20poly1305_macbytes(void)
+{
+    return crypto_box_curve25519xsalsa20poly1305_MACBYTES;
+}
+
+size_t
+crypto_box_curve25519xsalsa20poly1305_messagebytes_max(void)
+{
+    return crypto_box_curve25519xsalsa20poly1305_MESSAGEBYTES_MAX;
+}