484 lines
16 KiB
C
484 lines
16 KiB
C
/* unit.c
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*
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* Copyright (C) 2014-2020 wolfSSL Inc.
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*
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* This file is part of wolfSSH.
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*
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* wolfSSH is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* wolfSSH is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with wolfSSH. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <wolfssh/ssh.h>
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#include <wolfssh/keygen.h>
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#include <wolfssh/internal.h>
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/* Utility functions */
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#define BAD 0xFF
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const byte hexDecode[] =
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{
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
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BAD, BAD, BAD, BAD, BAD, BAD, BAD,
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10, 11, 12, 13, 14, 15, /* upper case A-F */
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BAD, BAD, BAD, BAD, BAD, BAD, BAD, BAD,
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BAD, BAD, BAD, BAD, BAD, BAD, BAD, BAD,
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BAD, BAD, BAD, BAD, BAD, BAD, BAD, BAD,
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BAD, BAD, /* G - ` */
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10, 11, 12, 13, 14, 15 /* lower case a-f */
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}; /* A starts at 0x41 not 0x3A */
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static int Base16_Decode(const byte* in, word32 inLen,
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byte* out, word32* outLen)
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{
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word32 inIdx = 0;
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word32 outIdx = 0;
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if (inLen == 1 && *outLen && in) {
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byte b = in[inIdx] - 0x30; /* 0 starts at 0x30 */
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/* sanity check */
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if (b >= sizeof(hexDecode)/sizeof(hexDecode[0]))
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return -1;
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b = hexDecode[b];
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if (b == BAD)
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return -1;
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out[outIdx++] = b;
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*outLen = outIdx;
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return 0;
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}
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if (inLen % 2)
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return -1;
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if (*outLen < (inLen / 2))
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return -1;
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while (inLen) {
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byte b = in[inIdx++] - 0x30; /* 0 starts at 0x30 */
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byte b2 = in[inIdx++] - 0x30;
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/* sanity checks */
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if (b >= sizeof(hexDecode)/sizeof(hexDecode[0]))
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return -1;
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if (b2 >= sizeof(hexDecode)/sizeof(hexDecode[0]))
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return -1;
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b = hexDecode[b];
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b2 = hexDecode[b2];
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if (b == BAD || b2 == BAD)
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return -1;
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out[outIdx++] = (byte)((b << 4) | b2);
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inLen -= 2;
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}
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*outLen = outIdx;
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return 0;
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}
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static void FreeBins(byte* b1, byte* b2, byte* b3, byte* b4)
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{
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if (b1 != NULL) free(b1);
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if (b2 != NULL) free(b2);
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if (b3 != NULL) free(b3);
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if (b4 != NULL) free(b4);
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}
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/* convert hex string to binary, store size, 0 success (free mem on failure) */
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static int ConvertHexToBin(const char* h1, byte** b1, word32* b1Sz,
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const char* h2, byte** b2, word32* b2Sz,
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const char* h3, byte** b3, word32* b3Sz,
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const char* h4, byte** b4, word32* b4Sz)
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{
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int ret;
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/* b1 */
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if (h1 && b1 && b1Sz) {
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*b1Sz = (word32)strlen(h1) / 2;
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*b1 = (byte*)malloc(*b1Sz);
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if (*b1 == NULL)
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return -1;
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ret = Base16_Decode((const byte*)h1, (word32)strlen(h1),
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*b1, b1Sz);
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if (ret != 0) {
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FreeBins(*b1, NULL, NULL, NULL);
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*b1 = NULL;
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return -1;
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}
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}
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/* b2 */
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if (h2 && b2 && b2Sz) {
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*b2Sz = (word32)strlen(h2) / 2;
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*b2 = (byte*)malloc(*b2Sz);
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if (*b2 == NULL) {
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FreeBins(b1 ? *b1 : NULL, NULL, NULL, NULL);
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if (b1) *b1 = NULL;
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return -1;
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}
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ret = Base16_Decode((const byte*)h2, (word32)strlen(h2),
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*b2, b2Sz);
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if (ret != 0) {
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FreeBins(b1 ? *b1 : NULL, *b2, NULL, NULL);
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if (b1) *b1 = NULL;
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*b2 = NULL;
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return -1;
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}
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}
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/* b3 */
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if (h3 && b3 && b3Sz) {
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*b3Sz = (word32)strlen(h3) / 2;
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*b3 = (byte*)malloc(*b3Sz);
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if (*b3 == NULL) {
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FreeBins(b1 ? *b1 : NULL, b2 ? *b2 : NULL, NULL, NULL);
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if (b1) *b1 = NULL;
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if (b2) *b2 = NULL;
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return -1;
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}
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ret = Base16_Decode((const byte*)h3, (word32)strlen(h3),
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*b3, b3Sz);
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if (ret != 0) {
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FreeBins(b1 ? *b1 : NULL, b2 ? *b2 : NULL, *b3, NULL);
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if (b1) *b1 = NULL;
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if (b2) *b2 = NULL;
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*b3 = NULL;
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return -1;
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}
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}
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/* b4 */
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if (h4 && b4 && b4Sz) {
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*b4Sz = (word32)strlen(h4) / 2;
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*b4 = (byte*)malloc(*b4Sz);
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if (*b4 == NULL) {
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FreeBins(b1 ? *b1 : NULL, b2 ? *b2 : NULL, b3 ? *b3 : NULL, NULL);
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if (b1) *b1 = NULL;
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if (b2) *b2 = NULL;
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if (b3) *b3 = NULL;
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return -1;
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}
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ret = Base16_Decode((const byte*)h4, (word32)strlen(h4),
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*b4, b4Sz);
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if (ret != 0) {
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FreeBins(b1 ? *b1 : NULL, b2 ? *b2 : NULL, b3 ? *b3 : NULL, *b4);
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if (b1) *b1 = NULL;
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if (b2) *b2 = NULL;
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if (b3) *b3 = NULL;
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*b4 = NULL;
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return -1;
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}
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}
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return 0;
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}
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/* Key Derivation Function (KDF) Unit Test */
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typedef struct {
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byte hashId;
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byte keyId;
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const char* k;
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const char* h;
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const char* sessionId;
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const char* expectedKey;
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} KdfTestVector;
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#ifndef NO_SHA
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/** Test Vector Set #1: SHA-1 **/
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const char kdfTvSet1k[] =
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"35618FD3AABF980A5F766408961600D4933C60DD7B22D69EEB4D7A987C938F6F"
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"7BB2E60E0F638BB4289297B588E6109057325F010D021DF60EBF8BE67AD9C3E2"
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"6376A326A16210C7AF07B3FE562B8DD1DCBECB17AA7BFAF38708B0136120B2FC"
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"723E93EF4237AC3737BAE3A16EC03F605C7EEABFD526B38C826B506BBAECD2F7"
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"9932F1371AEABFBEB4F8222313506677330C714A2A6FDC70CB859B581AA18625"
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"ECCB6BA9DDEEAECF0E41D9E5076B899B477112E59DDADC4B4D9C13E9F07E1107"
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"B560FEFDC146B8ED3E73441D05345031C35F9E6911B00319481D80015855BE4D"
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"1C7D7ACC8579B1CC2E5F714109C0882C3B57529ABDA1F2255D2B27C4A83AE11E";
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const char kdfTvSet1h[] = "40555741F6DE70CDC4E740104A97E75473F49064";
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const char kdfTvSet1sid[] = "40555741F6DE70CDC4E740104A97E75473F49064";
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const char kdfTvSet1a[] = "B2EC4CF6943632C39972EE2801DC7393";
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const char kdfTvSet1b[] = "BC92238B6FA69ECC10B2B013C2FC9785";
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const char kdfTvSet1c[] = "9EF0E2053F66C56F3E4503DA1C2FBD6B";
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const char kdfTvSet1d[] = "47C8395B08277020A0645DA3959FA1A9";
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const char kdfTvSet1e[] = "EE436BFDABF9B0313224EC800E7390445E2F575E";
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const char kdfTvSet1f[] = "FB9FDEEC78B0FB258F1A4F47F6BCE166680994BB";
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/** Test Vector Set #2: SHA-1 **/
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const char kdfTvSet2k[] =
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"19FA2B7C7F4FE7DE61CDE17468C792CCEAB0E3F2CE37CDE2DAA0974BCDFFEDD4"
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"A29415CDB330FA6A97ECA742359DC1223B581D8AC61B43CFFDF66D20952840B0"
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"2593B48354E352E2A396BDF7F1C9D414FD31C2BF47E6EED306069C4F4F5F66C3"
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"003A90E85412A1FBE89CDFB457CDA0D832E8DA701627366ADEC95B70E8A8B7BF"
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"3F85775CCF36E40631B83B32CF643088F01A82C97C5C3A820EB4149F551CAF8C"
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"C98EE6B3065E6152FF877823F7C618C1CD93CE26DB9FAAFED222F1C93E8F4068"
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"BFDA4480432E14F98FFC821F05647693040B07D71DC273121D53866294434D46"
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"0E95CFA4AB4414705BF1F8224655F907A418A6A893F2A71019225869CB7FE988";
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const char kdfTvSet2h[] = "DFB748905CC8647684C3E0B7F26A3E8E7414AC51";
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const char kdfTvSet2sid[] = "DFB748905CC8647684C3E0B7F26A3E8E7414AC51";
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const char kdfTvSet2a[] = "52EDBFD5E414A3CC6C7F7A0F4EA60503";
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const char kdfTvSet2b[] = "926C6987696C5FFCC6511BFE34557878";
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const char kdfTvSet2c[] = "CB6D56EC5B9AFECD326D544DA2D22DED";
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const char kdfTvSet2d[] = "F712F6451F1BD6CE9BAA597AC87C5A24";
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const char kdfTvSet2e[] = "E42FC62C76B76B37818F78292D3C2226D0264760";
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const char kdfTvSet2f[] = "D14BE4DD0093A3E759580233C80BB8399CE4C4E7";
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#endif
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/** Test Vector Set #3: SHA-256 **/
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const char kdfTvSet3k[] =
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"6AC382EAACA093E125E25C24BEBC84640C11987507344B5C739CEB84A9E0B222"
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"B9A8B51C839E5EBE49CFADBFB39599764ED522099DC912751950DC7DC97FBDC0"
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"6328B68F22781FD315AF568009A5509E5B87A11BF527C056DAFFD82AB6CBC25C"
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"CA37143459E7BC63BCDE52757ADEB7DF01CF12173F1FEF8102EC5AB142C213DD"
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"9D30696278A8D8BC32DDE9592D28C078C6D92B947D825ACAAB6494846A49DE24"
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"B9623F4889E8ADC38E8C669EFFEF176040AD945E90A7D3EEC15EFEEE78AE7104"
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"3C96511103A16BA7CAF0ACD0642EFDBE809934FAA1A5F1BD11043649B25CCD1F"
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"EE2E38815D4D5F5FC6B4102969F21C22AE1B0E7D3603A556A13262FF628DE222";
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const char kdfTvSet3h[] =
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"7B7001185E256D4493445F39A55FB905E6321F4B5DD8BBF3100D51BA0BDA3D2D";
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const char kdfTvSet3sid[] =
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"7B7001185E256D4493445F39A55FB905E6321F4B5DD8BBF3100D51BA0BDA3D2D";
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const char kdfTvSet3a[] = "81F0330EF6F05361B3823BFDED6E1DE9";
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const char kdfTvSet3b[] = "3F6FD2065EEB2B0B1D93195A1FED48A5";
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const char kdfTvSet3c[] = "C35471034E6FD6547613178E23435F21";
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const char kdfTvSet3d[] = "7E9D79032090D99F98B015634DD9F462";
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const char kdfTvSet3e[] =
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"24EE559AD7CE712B685D0B2271E443C17AB1D1DCEB5A360569D25D5DC243002F";
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const char kdfTvSet3f[] =
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"C3419C2B966235869D714BA5AC48DDB7D9E35C8C19AAC73422337A373453607E";
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/** Test Vector Set #4: SHA-256 **/
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const char kdfTvSet4k[] =
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"44708C76616F700BD31B0C155EF74E36390EEB39BC5C32CDC90E21922B0ED930"
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"B5B519C8AFEBEF0F4E4FB5B41B81D649D2127506620B594E9899F7F0D442ECDD"
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"D68308307B82F00065E9D75220A5A6F5641795772132215A236064EA965C6493"
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"C21F89879730EBBC3C20A22D8F5BFD07B525B194323B22D8A49944D1AA58502E"
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"756101EF1E8A91C9310E71F6DB65A3AD0A542CFA751F83721A99E89F1DBE5497"
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"1A3620ECFFC967AA55EED1A42D6E7A138B853557AC84689889F6D0C8553575FB"
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"89B4E13EAB5537DA72EF16F0D72F5E8505D97F110745193D550FA315FE88F672"
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"DB90D73843E97BA1F3D087BA8EB39025BBFFAD37589A6199227303D9D8E7F1E3";
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const char kdfTvSet4h[] =
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"FE3727FD99A5AC7987C2CFBE062129E3027BF5E10310C6BCCDE9C916C8329DC2";
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const char kdfTvSet4sid[] =
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"FFFA598BC0AD2AE84DC8DC05B1F72C5B0134025AE7EDF8A2E8DB11472E18E1FC";
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const char kdfTvSet4a[] = "36730BAE8DE5CB98898D6B4A00B37058";
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const char kdfTvSet4b[] = "5DFE446A83F40E8358D28CB97DF8F340";
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const char kdfTvSet4c[] = "495B7AFED0872B761437728E9E94E2B8";
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const char kdfTvSet4d[] = "C1474B3925BEC36F0B7F6CC698E949C8";
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const char kdfTvSet4e[] =
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"B730F8DF6A0697645BE261169486C32A11612229276CBAC5D8B3669AFB2E4262";
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const char kdfTvSet4f[] =
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"14A5EA98245FB058978B82A3CB092B1CCA7CE0109A4F98C16E1529579D58B819";
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#define HASH_SHA WC_HASH_TYPE_SHA
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#define HASH_SHA256 WC_HASH_TYPE_SHA256
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static const KdfTestVector kdfTestVectors[] = {
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#ifndef NO_SHA
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{HASH_SHA, 'A', kdfTvSet1k, kdfTvSet1h, kdfTvSet1sid, kdfTvSet1a},
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{HASH_SHA, 'B', kdfTvSet1k, kdfTvSet1h, kdfTvSet1sid, kdfTvSet1b},
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{HASH_SHA, 'C', kdfTvSet1k, kdfTvSet1h, kdfTvSet1sid, kdfTvSet1c},
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{HASH_SHA, 'D', kdfTvSet1k, kdfTvSet1h, kdfTvSet1sid, kdfTvSet1d},
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{HASH_SHA, 'E', kdfTvSet1k, kdfTvSet1h, kdfTvSet1sid, kdfTvSet1e},
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{HASH_SHA, 'F', kdfTvSet1k, kdfTvSet1h, kdfTvSet1sid, kdfTvSet1f},
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{HASH_SHA, 'A', kdfTvSet2k, kdfTvSet2h, kdfTvSet2sid, kdfTvSet2a},
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{HASH_SHA, 'B', kdfTvSet2k, kdfTvSet2h, kdfTvSet2sid, kdfTvSet2b},
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{HASH_SHA, 'C', kdfTvSet2k, kdfTvSet2h, kdfTvSet2sid, kdfTvSet2c},
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{HASH_SHA, 'D', kdfTvSet2k, kdfTvSet2h, kdfTvSet2sid, kdfTvSet2d},
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{HASH_SHA, 'E', kdfTvSet2k, kdfTvSet2h, kdfTvSet2sid, kdfTvSet2e},
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{HASH_SHA, 'F', kdfTvSet2k, kdfTvSet2h, kdfTvSet2sid, kdfTvSet2f},
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#endif
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{HASH_SHA256, 'A', kdfTvSet3k, kdfTvSet3h, kdfTvSet3sid, kdfTvSet3a},
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{HASH_SHA256, 'B', kdfTvSet3k, kdfTvSet3h, kdfTvSet3sid, kdfTvSet3b},
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{HASH_SHA256, 'C', kdfTvSet3k, kdfTvSet3h, kdfTvSet3sid, kdfTvSet3c},
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{HASH_SHA256, 'D', kdfTvSet3k, kdfTvSet3h, kdfTvSet3sid, kdfTvSet3d},
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{HASH_SHA256, 'E', kdfTvSet3k, kdfTvSet3h, kdfTvSet3sid, kdfTvSet3e},
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{HASH_SHA256, 'F', kdfTvSet3k, kdfTvSet3h, kdfTvSet3sid, kdfTvSet3f},
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{HASH_SHA256, 'A', kdfTvSet4k, kdfTvSet4h, kdfTvSet4sid, kdfTvSet4a},
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{HASH_SHA256, 'B', kdfTvSet4k, kdfTvSet4h, kdfTvSet4sid, kdfTvSet4b},
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{HASH_SHA256, 'C', kdfTvSet4k, kdfTvSet4h, kdfTvSet4sid, kdfTvSet4c},
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{HASH_SHA256, 'D', kdfTvSet4k, kdfTvSet4h, kdfTvSet4sid, kdfTvSet4d},
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{HASH_SHA256, 'E', kdfTvSet4k, kdfTvSet4h, kdfTvSet4sid, kdfTvSet4e},
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{HASH_SHA256, 'F', kdfTvSet4k, kdfTvSet4h, kdfTvSet4sid, kdfTvSet4f}
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};
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static int test_KDF(void)
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{
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int result = 0;
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word32 i;
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word32 tc = sizeof(kdfTestVectors)/sizeof(KdfTestVector);
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const KdfTestVector* tv = NULL;
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byte* k = NULL;
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byte* h = NULL;
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byte* sId = NULL;
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byte* eKey = NULL;
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word32 kSz = 0, hSz = 0, sIdSz = 0, eKeySz = 0;
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byte cKey[32]; /* Greater of SHA256_DIGEST_SIZE and AES_BLOCK_SIZE */
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/* sId - Session ID, eKey - Expected Key, cKey - Calculated Key */
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for (i = 0, tv = kdfTestVectors; i < tc; i++, tv++) {
|
|
|
|
result = ConvertHexToBin(tv->k, &k, &kSz,
|
|
tv->h, &h, &hSz,
|
|
tv->sessionId, &sId, &sIdSz,
|
|
tv->expectedKey, &eKey, &eKeySz);
|
|
if (result != 0 || eKey == NULL) {
|
|
printf("KDF: Could not convert test vector %u.\n", i);
|
|
result = -100;
|
|
}
|
|
|
|
if (result == 0) {
|
|
result = wolfSSH_KDF(tv->hashId, tv->keyId, cKey, eKeySz,
|
|
k, kSz, h, hSz, sId, sIdSz);
|
|
|
|
if (result != 0) {
|
|
printf("KDF: Could not derive key.\n");
|
|
result = -101;
|
|
}
|
|
}
|
|
|
|
if (result == 0) {
|
|
if (memcmp(cKey, eKey, eKeySz) != 0) {
|
|
printf("KDF: Calculated Key does not match Expected Key.\n");
|
|
result = -102;
|
|
}
|
|
}
|
|
|
|
FreeBins(k, h, sId, eKey);
|
|
k = NULL;
|
|
h = NULL;
|
|
sId = NULL;
|
|
eKey = NULL;
|
|
|
|
if (result != 0) break;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
/* Key Generation Unit Test */
|
|
|
|
#ifdef WOLFSSH_KEYGEN
|
|
|
|
static int test_RsaKeyGen(void)
|
|
{
|
|
int result = 0;
|
|
byte der[1200];
|
|
int derSz;
|
|
|
|
derSz = wolfSSH_MakeRsaKey(der, sizeof(der),
|
|
WOLFSSH_RSAKEY_DEFAULT_SZ,
|
|
WOLFSSH_RSAKEY_DEFAULT_E);
|
|
if (derSz < 0) {
|
|
printf("RsaKeyGen: MakeRsaKey failed\n");
|
|
result = -103;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
/* Error Code And Message Test */
|
|
|
|
static int test_Errors(void)
|
|
{
|
|
const char* errStr;
|
|
const char* unknownStr = wolfSSH_ErrorToName(1);
|
|
int result = 0;
|
|
|
|
#ifdef NO_WOLFSSH_STRINGS
|
|
/* Ensure a valid error code's string matches an invalid code's.
|
|
* The string is that error strings are not available.
|
|
*/
|
|
errStr = wolfSSH_ErrorToName(WS_BAD_ARGUMENT);
|
|
if (errStr != unknownStr)
|
|
result = -104;
|
|
#else
|
|
int i, j = 0;
|
|
/* Values that are not or no longer error codes. */
|
|
int missing[] = { -1059 };
|
|
int missingSz = (int)sizeof(missing)/sizeof(missing[0]);
|
|
|
|
/* Check that all errors have a string and it's the same through the two
|
|
* APIs. Check that the values that are not errors map to the unknown
|
|
* string. */
|
|
for (i = WS_ERROR; i >= WS_LAST_E; i--) {
|
|
errStr = wolfSSH_ErrorToName(i);
|
|
|
|
if (j < missingSz && i == missing[j]) {
|
|
j++;
|
|
if (errStr != unknownStr) {
|
|
result = -105;
|
|
break;
|
|
}
|
|
}
|
|
else {
|
|
if (errStr == unknownStr) {
|
|
result = -106;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Check if the next possible value has been given a string. */
|
|
if (result == 0) {
|
|
errStr = wolfSSH_ErrorToName(i);
|
|
if (errStr != unknownStr)
|
|
return -107;
|
|
}
|
|
#endif
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
int main(void)
|
|
{
|
|
int testResult = 0, unitResult = 0;
|
|
|
|
unitResult = test_Errors();
|
|
printf("Errors: %s\n", (unitResult == 0 ? "SUCCESS" : "FAILED"));
|
|
testResult = testResult || unitResult;
|
|
|
|
unitResult = test_KDF();
|
|
printf("KDF: %s\n", (unitResult == 0 ? "SUCCESS" : "FAILED"));
|
|
testResult = testResult || unitResult;
|
|
|
|
#ifdef WOLFSSH_KEYGEN
|
|
unitResult = test_RsaKeyGen();
|
|
printf("RsaKeyGen: %s\n", (unitResult == 0 ? "SUCCESS" : "FAILED"));
|
|
testResult = testResult || unitResult;
|
|
#endif
|
|
|
|
return (testResult ? 1 : 0);
|
|
}
|
|
|