Add libsodium to the tree and build what's needed from source.

git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@3859 ed5197a5-7fde-0310-b194-c3ffbd925b24

deps/libsodium/test/default/hash.c

@@ -0,0 +1,47 @@
+
+#define TEST_NAME "hash"
+#include "cmptest.h"
+
+static unsigned char x[] = "testing\n";
+static unsigned char x2[] =
+    "The Conscience of a Hacker is a small essay written January 8, 1986 by a "
+    "computer security hacker who went by the handle of The Mentor, who "
+    "belonged to the 2nd generation of Legion of Doom.";
+static unsigned char h[crypto_hash_BYTES];
+
+int
+main(void)
+{
+    size_t i;
+
+    crypto_hash(h, x, sizeof x - 1U);
+    for (i = 0; i < crypto_hash_BYTES; ++i) {
+        printf("%02x", (unsigned int) h[i]);
+    }
+    printf("\n");
+    crypto_hash(h, x2, sizeof x2 - 1U);
+    for (i = 0; i < crypto_hash_BYTES; ++i) {
+        printf("%02x", (unsigned int) h[i]);
+    }
+    printf("\n");
+    crypto_hash_sha256(h, x, sizeof x - 1U);
+    for (i = 0; i < crypto_hash_sha256_BYTES; ++i) {
+        printf("%02x", (unsigned int) h[i]);
+    }
+    printf("\n");
+    crypto_hash_sha256(h, x2, sizeof x2 - 1U);
+    for (i = 0; i < crypto_hash_sha256_BYTES; ++i) {
+        printf("%02x", (unsigned int) h[i]);
+    }
+    printf("\n");
+
+    assert(crypto_hash_bytes() > 0U);
+    assert(strcmp(crypto_hash_primitive(), "sha512") == 0);
+    assert(crypto_hash_sha256_bytes() > 0U);
+    assert(crypto_hash_sha512_bytes() >= crypto_hash_sha256_bytes());
+    assert(crypto_hash_sha512_bytes() == crypto_hash_bytes());
+    assert(crypto_hash_sha256_statebytes() == sizeof(crypto_hash_sha256_state));
+    assert(crypto_hash_sha512_statebytes() == sizeof(crypto_hash_sha512_state));
+
+    return 0;
+}