add examples/

1 files changed, 75 insertions, 0 deletions

diff --git a/examples/03-tuplehash128/main.c b/examples/03-tuplehash128/main.c
new file mode 100644
index 0000000..c9e1952
--- /dev/null
+++ b/examples/03-tuplehash128/main.c
@@ -0,0 +1,75 @@
+//
+// tuplehash128-example: Hash tuples with TupleHash128 and key
+// and print first 20 bytes of result to standard output.
+//
+#include <stdint.h>
+#include <stdio.h>
+#include "hex.h"
+#include "sha3.h"
+
+static const struct {
+  const char *name;
+  tuplehash_str_t strs[10];
+  size_t num_strs;
+} ROWS[] = {{
+  .name = "TupleHash128: \"abc\"",
+  .strs = {{
+    .ptr = (uint8_t*) "abc",
+    .len = 3,
+  }},
+  .num_strs = 1,
+}, {
+  .name = "TupleHash128: \"ab\", \"c\"",
+  .strs = {{
+    .ptr = (uint8_t*) "ab",
+    .len = 2,
+  }, {
+    .ptr = (uint8_t*) "c",
+    .len = 1,
+  }},
+  .num_strs = 2,
+}, {
+  .name = "TupleHash128: \"a\", \"bc\"",
+  .strs = {{
+    .ptr = (uint8_t*) "a",
+    .len = 1,
+  }, {
+    .ptr = (uint8_t*) "bc",
+    .len = 2,
+  }},
+  .num_strs = 2,
+}, {
+  .name = "TupleHash128: \"a\", \"b\", \"c\"",
+  .strs = {{
+    .ptr = (uint8_t*) "a",
+    .len = 1,
+  }, {
+    .ptr = (uint8_t*) "b",
+    .len = 1,
+  }, {
+    .ptr = (uint8_t*) "c",
+    .len = 1,
+  }},
+  .num_strs = 3,
+}};
+
+int main() {
+  for (size_t i = 0; i < sizeof(ROWS)/sizeof(ROWS[0]); i++) {
+    // build params
+    tuplehash_params_t params = {
+      .strs = ROWS[i].strs,
+      .num_strs = ROWS[i].num_strs,
+    };
+
+    // hash data
+    uint8_t buf[32];
+    tuplehash128(params, buf, sizeof(buf));
+
+    // print to stdout
+    printf("%s:\n", ROWS[i].name);
+    hex_write(stdout, buf, sizeof(buf));
+    printf("\n");
+  }
+
+  return 0;
+}