sha1: move this to private websocket API

Nothing else uses it, and nothing else *should* use it because SHA1 is insecure.
WebSockets have to use it by definition, unfortunately.  The implementation is
not very fast, but doesn't have to be for the use case of websocket keying.

1 files changed, 72 insertions, 0 deletions

diff --git a/src/supplemental/websocket/sha1_test.c b/src/supplemental/websocket/sha1_test.c
new file mode 100644
index 00000000..505175b0
--- /dev/null
+++ b/src/supplemental/websocket/sha1_test.c
@@ -0,0 +1,72 @@
+//
+// Copyright 2019 Staysail Systems, Inc. <info@staysail.tech>
+// Copyright 2018 Capitar IT Group BV <info@capitar.com>
+//
+// This software is supplied under the terms of the MIT License, a
+// copy of which should be located in the distribution where this
+// file was obtained (LICENSE.txt).  A copy of the license may also be
+// found online at https://opensource.org/licenses/MIT.
+//
+
+#include <stdint.h>
+#include <string.h>
+
+#include <nng/nng.h>
+
+#include <acutest.h>
+
+#include "sha1.h"
+
+
+// The following test vectors are from RFC 3174.
+#define TEST1 "abc"
+#define TEST2a "abcdbcdecdefdefgefghfghighijhi"
+#define TEST2b "jkijkljklmklmnlmnomnopnopq"
+#define TEST2 TEST2a TEST2b
+#define TEST3 "a"
+#define TEST4a "01234567012345670123456701234567"
+#define TEST4b "01234567012345670123456701234567"
+/* an exact multiple of 512 bits */
+#define TEST4 TEST4a TEST4b
+
+char *testarray[4]   = { TEST1, TEST2, TEST3, TEST4 };
+int   repeatcount[4] = { 1, 1, 1000000, 10 };
+char *resultarray[4] = {
+	"A9 99 3E 36 47 06 81 6A BA 3E 25 71 78 50 C2 6C 9C D0 D8 9D",
+	"84 98 3E 44 1C 3B D2 6E BA AE 4A A1 F9 51 29 E5 E5 46 70 F1",
+	"34 AA 97 3C D4 C4 DA A4 F6 1E EB 2B DB AD 27 31 65 34 01 6F",
+	"DE A3 56 A2 CD DD 90 C7 A7 EC ED C5 EB B5 63 93 4F 46 04 52"
+};
+
+void
+test_sha1(void)
+{
+
+	for (int i = 0; i < 4; i++) {
+		nni_sha1_ctx ctx;
+		size_t       slen = strlen(testarray[i]);
+		uint8_t      digest[20];
+		char         strout[20 * 3 + 1];
+		char         name[8];
+
+		snprintf(name, sizeof(name), "%d", i);
+		TEST_CASE(name);
+
+		memset(digest, 0, sizeof(digest));
+		nni_sha1_init(&ctx);
+		for (int j = 0; j < repeatcount[i]; j++) {
+			nni_sha1_update(&ctx, (uint8_t *) testarray[i], slen);
+		}
+		nni_sha1_final(&ctx, digest);
+		for (int j = 0; j < 20; j++) {
+			snprintf(strout + j * 3, 4, "%02X ", digest[j]);
+		}
+		strout[20 * 3 - 1] = '\0';
+		TEST_CHECK(strcmp(strout, resultarray[i]) == 0);
+	}
+}
+
+TEST_LIST = {
+	{ "sha1", test_sha1 },
+	{ NULL, NULL },
+};