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1// cc_fuzz_target test for public key parsing.
2
3#include <stddef.h>
4#include <stdio.h>
5#include <stdint.h>
6#include <stdlib.h>
7#include <string.h>
8
9extern "C" {
10
11#include "includes.h"
12#include "sshkey.h"
13#include "ssherr.h"
14
15static struct sshkey *generate_or_die(int type, unsigned bits) {
16 int r;
17 struct sshkey *ret;
18 if ((r = sshkey_generate(type, bits, &ret)) != 0) {
19 fprintf(stderr, "generate(%d, %u): %s", type, bits, ssh_err(r));
20 abort();
21 }
22 return ret;
23}
24
25int LLVMFuzzerTestOneInput(const uint8_t* sig, size_t slen)
26{
27#ifdef WITH_OPENSSL
28 static struct sshkey *rsa = generate_or_die(KEY_RSA, 2048);
29 static struct sshkey *dsa = generate_or_die(KEY_DSA, 1024);
30 static struct sshkey *ecdsa256 = generate_or_die(KEY_ECDSA, 256);
31 static struct sshkey *ecdsa384 = generate_or_die(KEY_ECDSA, 384);
32 static struct sshkey *ecdsa521 = generate_or_die(KEY_ECDSA, 521);
33#endif
34 static struct sshkey *ed25519 = generate_or_die(KEY_ED25519, 0);
35 static const char *data = "If everyone started announcing his nose had "
36 "run away, I don’t know how it would all end";
37 static const size_t dlen = strlen(data);
38
39#ifdef WITH_OPENSSL
40 sshkey_verify(rsa, sig, slen, (const u_char *)data, dlen, 0);
41 sshkey_verify(dsa, sig, slen, (const u_char *)data, dlen, 0);
42 sshkey_verify(ecdsa256, sig, slen, (const u_char *)data, dlen, 0);
43 sshkey_verify(ecdsa384, sig, slen, (const u_char *)data, dlen, 0);
44 sshkey_verify(ecdsa521, sig, slen, (const u_char *)data, dlen, 0);
45#endif
46 sshkey_verify(ed25519, sig, slen, (const u_char *)data, dlen, 0);
47 return 0;
48}
49
50} // extern