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annotate fuzzer-pubkey.c @ 1659:d32bcb5c557d

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Add Ed25519 support (#91) * Add support for Ed25519 as a public key type Ed25519 is a elliptic curve signature scheme that offers better security than ECDSA and DSA and good performance. It may be used for both user and host keys. OpenSSH key import and fuzzer are not supported yet. Initially inspired by Peter Szabo. * Add curve25519 and ed25519 fuzzers * Add import and export of Ed25519 keys
author Vladislav Grishenko <themiron@users.noreply.github.com>
date Wed, 11 Mar 2020 21:09:45 +0500
parents 252b406d0e9a
children ba6fc7afe1c5
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ddfcadca3c4c fuzzer-pubkey
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1 #include "fuzz.h"
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2 #include "session.h"
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3 #include "fuzz-wrapfd.h"
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4 #include "debug.h"
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5
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6 static void setup_fuzzer(void) {
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7 fuzz_common_setup();
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8 }
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9
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10 int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
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11 static int once = 0;
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12 if (!once) {
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13 setup_fuzzer();
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14 once = 1;
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15 }
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16
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17 if (fuzz_set_input(Data, Size) == DROPBEAR_FAILURE) {
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18 return 0;
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19 }
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20
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21 m_malloc_set_epoch(1);
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22
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23 if (setjmp(fuzz.jmp) == 0) {
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24 buffer *line = buf_getstringbuf(fuzz.input);
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25 buffer *keyblob = buf_getstringbuf(fuzz.input);
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26
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27 unsigned int algolen;
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28 char* algoname = buf_getstring(keyblob, &algolen);
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29
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30 if (have_algo(algoname, algolen, sshhostkey) == DROPBEAR_FAILURE) {
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31 dropbear_exit("fuzzer imagined a bogus algorithm");
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32 }
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33
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34 int ret = fuzz_checkpubkey_line(line, 5, "/home/me/authorized_keys",
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35 algoname, algolen,
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36 keyblob->data, keyblob->len);
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37
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38 if (ret == DROPBEAR_SUCCESS) {
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39 /* fuzz_checkpubkey_line() should have cleaned up for failure */
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40 svr_pubkey_options_cleanup();
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41 }
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42
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43 buf_free(line);
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44 buf_free(keyblob);
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45 m_free(algoname);
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46 m_malloc_free_epoch(1, 0);
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47 } else {
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48 m_malloc_free_epoch(1, 1);
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49 TRACE(("dropbear_exit longjmped"))
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50 /* dropbear_exit jumped here */
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51 }
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52
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53 return 0;
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54 }