Tests: added test_sha256 for SHA-256 testing

1 files changed, 335 insertions, 0 deletions

diff --git a/src/microhttpd/test_sha256.c b/src/microhttpd/test_sha256.c
new file mode 100644
index 00000000..50e119f8
--- /dev/null
+++ b/src/microhttpd/test_sha256.c
@@ -0,0 +1,335 @@
+/*
+  This file is part of libmicrohttpd
+  Copyright (C) 2019 Karlson2k (Evgeny Grin)
+
+  This test tool is free software; you can redistribute it and/or
+  modify it under the terms of the GNU General Public License as
+  published by the Free Software Foundation; either version 2, or
+  (at your option) any later version.
+
+  This test tool is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+/**
+ * @file microhttpd/test_sha256.h
+ * @brief  Unit tests for SHA-256 functions
+ * @author Karlson2k (Evgeny Grin)
+ */
+
+#include "mhd_options.h"
+#include "sha256.h"
+#include "test_helpers.h"
+#include <stdio.h>
+
+static int verbose = 0; /* verbose level (0-1)*/
+
+
+struct str_with_len
+{
+  const char * const str;
+  const size_t len;
+};
+
+#define D_STR_W_LEN(s) {(s), (sizeof((s)) / sizeof(char)) - 1}
+
+struct data_unit1
+{
+  const struct str_with_len str_l;
+  const uint8_t digest[SHA256_DIGEST_SIZE];
+};
+
+static const struct data_unit1 data_units1[] = {
+    {D_STR_W_LEN("abc"),
+        {0xba, 0x78, 0x16, 0xbf, 0x8f, 0x01, 0xcf, 0xea, 0x41, 0x41, 0x40, 0xde, 0x5d, 0xae, 0x22, 0x23,
+         0xb0, 0x03, 0x61, 0xa3, 0x96, 0x17, 0x7a, 0x9c, 0xb4, 0x10, 0xff, 0x61, 0xf2, 0x00, 0x15, 0xad}},
+    {D_STR_W_LEN("abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"),
+        {0x24, 0x8d, 0x6a, 0x61, 0xd2, 0x06, 0x38, 0xb8, 0xe5, 0xc0, 0x26, 0x93, 0x0c, 0x3e, 0x60, 0x39,
+         0xa3, 0x3c, 0xe4, 0x59, 0x64, 0xff, 0x21, 0x67, 0xf6, 0xec, 0xed, 0xd4, 0x19, 0xdb, 0x06, 0xc1}},
+    {D_STR_W_LEN(""),
+        {0xe3, 0xb0, 0xc4, 0x42, 0x98, 0xfc, 0x1c, 0x14, 0x9a, 0xfb, 0xf4, 0xc8, 0x99, 0x6f, 0xb9, 0x24,
+         0x27, 0xae, 0x41, 0xe4, 0x64, 0x9b, 0x93, 0x4c, 0xa4, 0x95, 0x99, 0x1b, 0x78, 0x52, 0xb8, 0x55}},
+    {D_STR_W_LEN("1234567890!@~%&$@#{}[]\\/!?`."),
+        {0x2f, 0xad, 0x7a, 0xff, 0x7d, 0xfe, 0xcd, 0x78, 0xe4, 0xa6, 0xf3, 0x85, 0x97, 0x9d, 0xdc, 0x39,
+         0x55, 0x24, 0x35, 0x4a, 0x00, 0x6f, 0x42, 0x72, 0x41, 0xc1, 0x52, 0xa7, 0x01, 0x0b, 0x2c, 0x41}},
+    {D_STR_W_LEN("Simple string."),
+        {0x01, 0x73, 0x17, 0xc4, 0x0a, 0x9a, 0x0e, 0x81, 0xb3, 0xa4, 0xb1, 0x8e, 0xe9, 0xd6, 0xc2, 0xdf,
+         0xfa, 0x7d, 0x53, 0x4e, 0xa1, 0xda, 0xb2, 0x5a, 0x75, 0xbb, 0x2c, 0x30, 0x2f, 0x5f, 0x7a, 0xf4}},
+    {D_STR_W_LEN("abcdefghijklmnopqrstuvwxyz"),
+        {0x71, 0xc4, 0x80, 0xdf, 0x93, 0xd6, 0xae, 0x2f, 0x1e, 0xfa, 0xd1, 0x44, 0x7c, 0x66, 0xc9, 0x52,
+         0x5e, 0x31, 0x62, 0x18, 0xcf, 0x51, 0xfc, 0x8d, 0x9e, 0xd8, 0x32, 0xf2, 0xda, 0xf1, 0x8b, 0x73}},
+    {D_STR_W_LEN("zyxwvutsrqponMLKJIHGFEDCBA"),
+        {0xce, 0x7d, 0xde, 0xb6, 0x1f, 0x7c, 0x1d, 0x83, 0x7c, 0x60, 0xd8, 0x36, 0x73, 0x82, 0xac, 0x92,
+         0xca, 0x37, 0xfd, 0x72, 0x8b, 0x0c, 0xd1, 0x6c, 0x55, 0xd5, 0x88, 0x98, 0x24, 0xfa, 0x16, 0xf2}},
+    {D_STR_W_LEN("abcdefghijklmnopqrstuvwxyzzyxwvutsrqponMLKJIHGFEDCBA"
+                 "abcdefghijklmnopqrstuvwxyzzyxwvutsrqponMLKJIHGFEDCBA"),
+        {0x27, 0xd1, 0xe8, 0xbc, 0x6a, 0x79, 0x16, 0x83, 0x61, 0x73, 0xa9, 0xa8, 0x9b, 0xaf, 0xaf, 0xcf,
+         0x47, 0x4d, 0x09, 0xef, 0x6d, 0x50, 0x35, 0x12, 0x25, 0x72, 0xd8, 0x68, 0xdc, 0x1f, 0xd2, 0xf4}},
+};
+
+static const size_t units1_num = sizeof(data_units1) / sizeof(data_units1[0]);
+
+struct bin_with_len
+{
+  const uint8_t bin[512];
+  const size_t len;
+};
+
+struct data_unit2
+{
+  const struct bin_with_len bin_l;
+  const uint8_t digest[SHA256_DIGEST_SIZE];
+};
+
+/* Size must be less than 512 bytes! */
+static const struct data_unit2 data_units2[] = {
+    { { {97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116,
+        117, 118, 119, 120, 121, 122}, 26},/* a..z ASCII sequence */
+      {0x71, 0xc4, 0x80, 0xdf, 0x93, 0xd6, 0xae, 0x2f, 0x1e, 0xfa, 0xd1, 0x44, 0x7c, 0x66, 0xc9, 0x52,
+       0x5e, 0x31, 0x62, 0x18, 0xcf, 0x51, 0xfc, 0x8d, 0x9e, 0xd8, 0x32, 0xf2, 0xda, 0xf1, 0x8b, 0x73}
+    },
+    { { {65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
+        65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
+        65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65
+        }, 72 },/* 'A' x 72 times */
+      {0x6a, 0x6d, 0x69, 0x1a, 0xc9, 0xba, 0x70, 0x95, 0x50, 0x46, 0x75, 0x7c, 0xd6, 0x85, 0xb6, 0x25,
+       0x77, 0x73, 0xff, 0x3a, 0xd9, 0x3f, 0x43, 0xd4, 0xd4, 0x81, 0x2c, 0x5b, 0x10, 0x6f, 0x4b, 0x5b}
+    },
+    { { {19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42,
+        43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67,
+        68, 69, 70, 71, 72, 73}, 55},/* 19..73 sequence */
+      {0x06, 0xe4, 0xb3, 0x9e, 0xf1, 0xfb, 0x6c, 0xcf, 0xd7, 0x3f, 0x50, 0x9e, 0xf4, 0x16, 0x17, 0xd4,
+       0x63, 0x7c, 0x39, 0x1e, 0xa8, 0x0f, 0xa9, 0x88, 0x03, 0x44, 0x98, 0x0e, 0x95, 0x81, 0xf0, 0x2a}
+    },
+    { { {7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
+        32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56,
+        57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69}, 63},/* 7..69 sequence */
+      {0x4a, 0xd3, 0xc6, 0x87, 0x1f, 0xd1, 0xc5, 0xe2, 0x3e, 0x52, 0xdc, 0x22, 0xd1, 0x10, 0xd2, 0x05,
+       0x15, 0x23, 0xcd, 0x15, 0xac, 0x24, 0x88, 0x26, 0x02, 0x00, 0x70, 0x78, 0x9f, 0x17, 0xf8, 0xd9}
+    },
+    { { {38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61,
+        62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86,
+        87, 88, 89, 90, 91, 92}, 55},/* 38..92 sequence */
+      {0xe6, 0x03, 0x0f, 0xc9, 0x0d, 0xca, 0x0c, 0x26, 0x41, 0xcf, 0x43, 0x27, 0xec, 0xd6, 0x28, 0x2a,
+       0x98, 0x24, 0x55, 0xd3, 0x5a, 0xed, 0x8b, 0x32, 0x19, 0x78, 0xeb, 0x83, 0x1d, 0x19, 0x92, 0x79}
+    },
+    { { {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27,
+        28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52,
+        53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72},
+      72},/* 1..72 sequence */
+      {0x87, 0xa2, 0xfa, 0x2e, 0xec, 0x53, 0x05, 0x3c, 0xb1, 0xee, 0x07, 0xd7, 0x59, 0x70, 0xf6, 0x50,
+       0xcd, 0x9d, 0xc5, 0x8b, 0xdc, 0xb8, 0x65, 0x30, 0x4f, 0x70, 0x82, 0x9e, 0xbd, 0xe2, 0x7d, 0xac}
+    },
+    { { {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26,
+        27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,
+        52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76,
+        77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100,
+        101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120,
+        121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140,
+        141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160,
+        161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180,
+        181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200,
+        201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220,
+        221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240,
+        241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255}, 256}, /* 0..255 sequence */
+      {0x40, 0xaf, 0xf2, 0xe9, 0xd2, 0xd8, 0x92, 0x2e, 0x47, 0xaf, 0xd4, 0x64, 0x8e, 0x69, 0x67, 0x49,
+       0x71, 0x58, 0x78, 0x5f, 0xbd, 0x1d, 0xa8, 0x70, 0xe7, 0x11, 0x02, 0x66, 0xbf, 0x94, 0x48, 0x80}
+    },
+    { { {199, 198, 197, 196, 195, 194, 193, 192, 191, 190, 189, 188, 187, 186, 185, 184, 183, 182, 181, 180,
+        179, 178, 177, 176, 175, 174, 173, 172, 171, 170, 169, 168, 167, 166, 165, 164, 163, 162, 161, 160,
+        159, 158, 157, 156, 155, 154, 153, 152, 151, 150, 149, 148, 147, 146, 145, 144, 143, 142, 141, 140,
+        139}, 61}, /* 199..139 sequence */
+      {0x85, 0xf8, 0xa2, 0x83, 0xd6, 0x3c, 0x76, 0x8e, 0xea, 0x8f, 0x1c, 0x57, 0x2d, 0x85, 0xb6, 0xff,
+       0xd8, 0x33, 0x57, 0x62, 0x1d, 0x37, 0xae, 0x0e, 0xfc, 0x22, 0xd3, 0xd5, 0x8f, 0x53, 0x21, 0xb7}
+    },
+    { { {255, 254, 253, 252, 251, 250, 249, 248, 247, 246, 245, 244, 243, 242, 241, 240, 239, 238, 237, 236,
+        235, 234, 233, 232, 231, 230, 229, 228, 227, 226, 225, 224, 223, 222, 221, 220, 219, 218, 217, 216,
+        215, 214, 213, 212, 211, 210, 209, 208, 207, 206, 205, 204, 203, 202, 201, 200, 199, 198, 197, 196,
+        195, 194, 193, 192, 191, 190, 189, 188, 187, 186, 185, 184, 183, 182, 181, 180, 179, 178, 177, 176,
+        175, 174, 173, 172, 171, 170, 169, 168, 167, 166, 165, 164, 163, 162, 161, 160, 159, 158, 157, 156,
+        155, 154, 153, 152, 151, 150, 149, 148, 147, 146, 145, 144, 143, 142, 141, 140, 139, 138, 137, 136,
+        135, 134, 133, 132, 131, 130, 129, 128, 127, 126, 125, 124, 123, 122, 121, 120, 119, 118, 117, 116,
+        115, 114, 113, 112, 111, 110, 109, 108, 107, 106, 105, 104, 103, 102, 101, 100, 99, 98, 97, 96, 95,
+        94, 93, 92, 91, 90, 89, 88, 87, 86, 85, 84, 83, 82, 81, 80, 79, 78, 77, 76, 75, 74, 73, 72, 71, 70,
+        69, 68, 67, 66, 65, 64, 63, 62, 61, 60, 59, 58, 57, 56, 55, 54, 53, 52, 51, 50, 49, 48, 47, 46, 45,
+        44, 43, 42, 41, 40, 39, 38, 37, 36, 35, 34, 33, 32, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20,
+        19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1}, 255}, /* 255..1 sequence */
+      {0x61, 0x86, 0x96, 0xab, 0x3e, 0xaa, 0x0e, 0x64, 0xb2, 0xf7, 0x2d, 0x75, 0x47, 0x5a, 0x14, 0x97,
+       0xa3, 0x3d, 0x59, 0xa4, 0x08, 0xd9, 0x9e, 0x73, 0xf2, 0x78, 0x00, 0x5b, 0x4b, 0x55, 0xca, 0x43}
+    },
+    { { {41, 35, 190, 132, 225, 108, 214, 174, 82, 144, 73, 241, 241, 187, 233, 235, 179, 166, 219, 60, 135,
+        12, 62, 153, 36, 94, 13, 28, 6, 183, 71, 222, 179, 18, 77, 200, 67, 187, 139, 166, 31, 3, 90, 125, 9,
+        56, 37, 31, 93, 212, 203, 252, 150, 245, 69, 59, 19, 13, 137, 10, 28, 219, 174, 50, 32, 154, 80, 238,
+        64, 120, 54, 253, 18, 73, 50, 246, 158, 125, 73, 220, 173, 79, 20, 242, 68, 64, 102, 208, 107, 196,
+        48, 183, 50, 59, 161, 34, 246, 34, 145, 157, 225, 139, 31, 218, 176, 202, 153, 2, 185, 114, 157, 73,
+        44, 128, 126, 197, 153, 213, 233, 128, 178, 234, 201, 204, 83, 191, 103, 214, 191, 20, 214, 126, 45,
+        220, 142, 102, 131, 239, 87, 73, 97, 255, 105, 143, 97, 205, 209, 30, 157, 156, 22, 114, 114, 230,
+        29, 240, 132, 79, 74, 119, 2, 215, 232, 57, 44, 83, 203, 201, 18, 30, 51, 116, 158, 12, 244, 213,
+        212, 159, 212, 164, 89, 126, 53, 207, 50, 34, 244, 204, 207, 211, 144, 45, 72, 211, 143, 117, 230,
+        217, 29, 42, 229, 192, 247, 43, 120, 129, 135, 68, 14, 95, 80, 0, 212, 97, 141, 190, 123, 5, 21, 7,
+        59, 51, 130, 31, 24, 112, 146, 218, 100, 84, 206, 177, 133, 62, 105, 21, 248, 70, 106, 4, 150, 115,
+        14, 217, 22, 47, 103, 104, 212, 247, 74, 74, 208, 87, 104}, 255}, /* pseudo-random data */
+      {0x08, 0x7f, 0x86, 0xac, 0xe2, 0x2e, 0x28, 0x56, 0x74, 0x53, 0x4f, 0xc0, 0xfb, 0xb8, 0x79, 0x57,
+       0xc5, 0xc8, 0xd1, 0xb7, 0x47, 0xb7, 0xd9, 0xea, 0x97, 0xa8, 0x67, 0xe9, 0x26, 0x93, 0xee, 0xa3}
+    }
+};
+
+static const size_t units2_num = sizeof(data_units2) / sizeof(data_units2[0]);
+
+
+/*
+ *  Helper functions
+ */
+
+/**
+ * Print bin as hex
+ *
+ * @param bin binary data
+ * @param len number of bytes in bin
+ * @param hex pointer to len*2+1 bytes buffer
+ */
+static void
+bin2hex (const uint8_t *bin,
+        size_t len,
+        char *hex)
+{
+  while (len-- > 0)
+    {
+      unsigned int b1, b2;
+      b1 = (*bin >> 4) & 0xf;
+      *hex++ = (char)((b1 > 9) ? (b1 + 'A' - 10) : (b1 + '0'));
+      b2 = *bin++ & 0xf;
+      *hex++ = (char)((b2 > 9) ? (b2 + 'A' - 10) : (b2 + '0'));
+    }
+  *hex = 0;
+}
+
+static int
+check_result (const char *test_name,
+              unsigned int check_num,
+              const uint8_t calcualted[SHA256_DIGEST_SIZE],
+              const uint8_t expected[SHA256_DIGEST_SIZE])
+{
+  int failed = memcmp(calcualted, expected, SHA256_DIGEST_SIZE);
+  check_num++; /* Print 1-based numbers */
+  if (failed)
+    {
+      char calc_str[SHA256_DIGEST_STRING_SIZE];
+      char expc_str[SHA256_DIGEST_STRING_SIZE];
+      bin2hex(calcualted, SHA256_DIGEST_SIZE, calc_str);
+      bin2hex(expected, SHA256_DIGEST_SIZE, expc_str);
+      fprintf (stderr, "FAILED: %s check %u: calculated digest %s, expected digest %s.\n",
+               test_name, check_num, calc_str, expc_str);
+      fflush (stderr);
+    }
+  else if (verbose)
+    {
+      char calc_str[SHA256_DIGEST_STRING_SIZE];
+      bin2hex(calcualted, SHA256_DIGEST_SIZE, calc_str);
+      printf ("PASSED: %s check %u: calculated digest %s match expected digest.\n",
+               test_name, check_num, calc_str);
+      fflush (stdout);
+    }
+  return failed ? 1 : 0;
+}
+
+
+/*
+ *  Tests
+ */
+
+/* Calculated SHA-256 as one pass for whole data */
+int test1_str(void)
+{
+  int num_failed = 0;
+  for (unsigned int i = 0; i < units1_num; i++)
+    {
+      struct sha256_ctx ctx;
+      uint8_t digest[SHA256_DIGEST_SIZE];
+
+      sha256_init (&ctx);
+      sha256_update (&ctx, (const uint8_t*)data_units1[i].str_l.str, data_units1[i].str_l.len);
+      sha256_digest (&ctx, digest);
+      num_failed += check_result (__FUNCTION__, i, digest,
+                                  data_units1[i].digest);
+    }
+  return num_failed;
+}
+
+int test1_bin(void)
+{
+  int num_failed = 0;
+  for (unsigned int i = 0; i < units2_num; i++)
+    {
+      struct sha256_ctx ctx;
+      uint8_t digest[SHA256_DIGEST_SIZE];
+
+      sha256_init (&ctx);
+      sha256_update (&ctx, data_units2[i].bin_l.bin, data_units2[i].bin_l.len);
+      sha256_digest (&ctx, digest);
+      num_failed += check_result (__FUNCTION__, i, digest,
+                                  data_units2[i].digest);
+    }
+  return num_failed;
+}
+
+/* Calculated SHA-256 as two iterations for whole data */
+int test2_str(void)
+{
+  int num_failed = 0;
+  for (unsigned int i = 0; i < units1_num; i++)
+    {
+      struct sha256_ctx ctx;
+      uint8_t digest[SHA256_DIGEST_SIZE];
+      size_t part_s = data_units1[i].str_l.len / 4;
+
+      sha256_init (&ctx);
+      sha256_update (&ctx, (const uint8_t*)data_units1[i].str_l.str, part_s);
+      sha256_update (&ctx, (const uint8_t*)data_units1[i].str_l.str + part_s, data_units1[i].str_l.len - part_s);
+      sha256_digest (&ctx, digest);
+      num_failed += check_result (__FUNCTION__, i, digest,
+                                  data_units1[i].digest);
+    }
+  return num_failed;
+}
+
+int test2_bin(void)
+{
+  int num_failed = 0;
+  for (unsigned int i = 0; i < units2_num; i++)
+    {
+      struct sha256_ctx ctx;
+      uint8_t digest[SHA256_DIGEST_SIZE];
+      size_t part_s = data_units2[i].bin_l.len * 2 / 3;
+
+      sha256_init (&ctx);
+      sha256_update (&ctx, data_units2[i].bin_l.bin, part_s);
+      sha256_update (&ctx, data_units2[i].bin_l.bin + part_s, data_units2[i].bin_l.len - part_s);
+      sha256_digest (&ctx, digest);
+      num_failed += check_result (__FUNCTION__, i, digest,
+                                  data_units2[i].digest);
+    }
+  return num_failed;
+}
+
+int main(int argc, char * argv[])
+{
+  int num_failed = 0;
+  (void)has_in_name; /* Mute compiler warning. */
+  if (has_param(argc, argv, "-v") || has_param(argc, argv, "--verbose"))
+    verbose = 1;
+
+  num_failed += test1_str();
+  num_failed += test1_bin();
+
+  num_failed += test2_str();
+  num_failed += test2_bin();
+
+  return num_failed ? 1 : 0;
+}