vendor/libsodium/test/default/sodium_utils.c in rbnacl-libsodium-1.0.6 vs vendor/libsodium/test/default/sodium_utils.c in rbnacl-libsodium-1.0.7

@@ -1,10 +1,11 @@
 #define TEST_NAME "sodium_utils"
 #include "cmptest.h"
 
 int main(void)
 {
+    unsigned char  buf_add[1000];
     unsigned char  buf1[1000];
     unsigned char  buf2[1000];
     unsigned char  buf1_rev[1000];
     unsigned char  buf2_rev[1000];
     char           buf3[33];
@@ -103,7 +104,79 @@
         if (sodium_compare(buf1, buf2, bin_len)) {
             printf("sodium_compare() equality failure with length=%u\n",
                    (unsigned int) bin_len);
         }
     }
+    memset(buf1, 0, sizeof buf1);
+    if (sodium_is_zero(buf1, sizeof buf1) != 1) {
+        printf("sodium_is_zero() failed\n");
+    }
+    for (i = 0U; i < sizeof buf1; i++) {
+        buf1[i]++;
+        if (sodium_is_zero(buf1, sizeof buf1) != 0) {
+            printf("sodium_is_zero() failed\n");
+        }
+        buf1[i]--;
+    }
+    bin_len = randombytes_uniform(sizeof buf1);
+    randombytes_buf(buf1, bin_len);
+    memcpy(buf2, buf1, bin_len);
+    memset(buf_add, 0, bin_len);
+    j = randombytes_uniform(10000);
+    for (i = 0U; i < j; i++) {
+        sodium_increment(buf1, bin_len);
+        sodium_increment(buf_add, bin_len);
+    }
+    sodium_add(buf2, buf_add, bin_len);
+    if (sodium_compare(buf1, buf2, bin_len) != 0) {
+        printf("sodium_add() failed\n");
+    }
+    bin_len = randombytes_uniform(sizeof buf1);
+    randombytes_buf(buf1, bin_len);
+    memcpy(buf2, buf1, bin_len);
+    memset(buf_add, 0xff, bin_len);
+    sodium_increment(buf2, bin_len);
+    sodium_increment(buf2, 0U);
+    sodium_add(buf2, buf_add, bin_len);
+    sodium_add(buf2, buf_add, 0U);
+    if (sodium_compare(buf1, buf2, bin_len) != 0) {
+        printf("sodium_add() failed\n");
+    }
+
+    assert(sizeof nonce >= 24U);
+    memset(nonce, 0xfe, 24U);
+    memset(nonce, 0xff, 6U);
+    sodium_increment(nonce, 8U);
+    printf("%s\n", sodium_bin2hex(nonce_hex, sizeof nonce_hex,
+                                  nonce, sizeof nonce));
+    memset(nonce, 0xfe, 24U);
+    memset(nonce, 0xff, 10U);
+    sodium_increment(nonce, 12U);
+    printf("%s\n", sodium_bin2hex(nonce_hex, sizeof nonce_hex,
+                                  nonce, sizeof nonce));
+    memset(nonce, 0xff, 22U);
+    sodium_increment(nonce, 24U);
+    printf("%s\n", sodium_bin2hex(nonce_hex, sizeof nonce_hex,
+                                  nonce, sizeof nonce));
+
+
+    assert(sizeof nonce >= 24U);
+    memset(nonce, 0xfe, 24U);
+    memset(nonce, 0xff, 6U);
+    sodium_add(nonce, nonce, 7U);
+    sodium_add(nonce, nonce, 8U);
+    printf("%s\n", sodium_bin2hex(nonce_hex, sizeof nonce_hex,
+                                  nonce, sizeof nonce));
+    memset(nonce, 0xfe, 24U);
+    memset(nonce, 0xff, 10U);
+    sodium_add(nonce, nonce, 11U);
+    sodium_add(nonce, nonce, 12U);
+    printf("%s\n", sodium_bin2hex(nonce_hex, sizeof nonce_hex,
+                                  nonce, sizeof nonce));
+    memset(nonce, 0xff, 22U);
+    sodium_add(nonce, nonce, 23U);
+    sodium_add(nonce, nonce, 24U);
+    printf("%s\n", sodium_bin2hex(nonce_hex, sizeof nonce_hex,
+                                  nonce, sizeof nonce));
+
     return 0;
 }