High level conclusions

Fuzzers reach 40.93% of cyclomatic complexity.

Fuzzers reach 38.69% of all functions.

Reachability and coverage overview

Functions statically reachable by fuzzers

510 / 1318

Cyclomatic complexity statically reachable by fuzzers

3869 / 9452

Runtime code coverage of functions

429 / 1318

The following table shows data about each function in the project. The functions included in this table correspond to all functions that exist in the executables of the fuzzers. As such, there may be functions that are from third-party libraries.

For further technical details on the meaning of columns in the below table, please see the Glossary .

Func name	Functions filename	Args	Function call depth	Reached by Fuzzers	Fuzzers runtime hit	Func lines hit %	I Count	BB Count	Cyclomatic complexity	Functions reached	Reached by functions	Accumulated cyclomatic complexity	Undiscovered complexity

Fuzzer: authopt_fuzz

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	56	37.0%
gold	[1:9]	3	1.98%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	2	1.32%
lawngreen	50+	90	59.6%
All colors	151	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
168	765	4 : View List ['free', 'xstrdup', 'strchr', 'a2tun']	168	765	a2tun	call site: 00082	/src/hpn-ssh/misc.c:559
2	2	1 : View List ['getpagesize']	8	8	recallocarray	call site: 00051	/src/hpn-ssh/openbsd-compat/recallocarray.c:64
2	2	1 : View List ['ntohs']	2	2	a2port	call site: 00075	/src/hpn-ssh/misc.c:547
0	11	1 : View List ['sshauthopt_free']	0	11	sshauthopt_merge	call site: 00145	/src/hpn-ssh/auth-options.c:635
0	0	None	12	100	sshauthopt_merge	call site: 00132	/src/hpn-ssh/auth-options.c:541
0	0	None	8	19	sshauthopt_merge	call site: 00142	/src/hpn-ssh/auth-options.c:614
0	0	None	6	675	sshauthopt_parse	call site: 00003	/src/hpn-ssh/auth-options.c:333
0	0	None	2	2	recallocarray	call site: 00053	/src/hpn-ssh/openbsd-compat/recallocarray.c:77
0	0	None	2	2	strtonum	call site: 00071	/src/hpn-ssh/openbsd-compat/strtonum.c:52
0	0	None	0	11	sshauthopt_parse	call site: 00004	/src/hpn-ssh/auth-options.c:335
0	0	None	0	11	sshauthopt_parse	call site: 00041	/src/hpn-ssh/auth-options.c:405
0	0	None	0	11	sshauthopt_parse	call site: 00044	/src/hpn-ssh/auth-options.c:417

Runtime coverage analysis

Covered functions

19

Functions that are reachable but not covered

42

Reachable functions

61

Percentage of reachable functions covered

31.15%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
regress/misc/fuzz-harness/authopt_fuzz.cc	1
auth-options.c	7
misc.c	8
openbsd-compat/recallocarray.c	1
openbsd-compat/strtonum.c	1
xmalloc.c	2
fatal.c	1
log.c	2
match.c	2
openbsd-compat/strlcpy.c	1
openbsd-compat/vis.c	2
cleanup.c	1
openbsd-compat/freezero.c	1

Fuzzer: privkey_fuzz

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	45	34.6%
gold	[1:9]	1	0.76%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	84	64.6%
All colors	130	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
158	158	5 : View List ['match_pattern_list', 'getpid', 'do_log', 'strrchr', 'strlcpy']	158	158	sshlogv	call site: 00014	/src/hpn-ssh/log.c:480
82	242	4 : View List ['sshkey_xmss_params', 'xmss_sign_open', 'malloc', 'sshlog']	82	455	ssh_xmss_verify	call site: 00000	/src/hpn-ssh/ssh-xmss.c:314
50	50	3 : View List ['sshkey_ec_validate_public', 'EC_KEY_get0_public_key', 'EC_KEY_get0_group']	52	52	ssh_ecdsa_deserialize_public	call site: 00000	/src/hpn-ssh/ssh-ecdsa.c:177
13	13	1 : View List ['rsa_hash_id_from_keyname']	21	703	ssh_rsa_verify	call site: 00000	/src/hpn-ssh/ssh-rsa.c:508
4	4	1 : View List ['timingsafe_bcmp']	4	9	openssh_RSA_verify	call site: 00000	/src/hpn-ssh/ssh-rsa.c:659
2	217	2 : View List ['EC_KEY_set_public_key', 'sshbuf_get_string_direct']	6	221	sshbuf_get_eckey	call site: 00000	/src/hpn-ssh/sshbuf-getput-crypto.c:110
2	2	1 : View List ['BN_clear_free']	2	2	sshbuf_get_bignum2	call site: 00000	/src/hpn-ssh/sshbuf-getput-crypto.c:48
0	233	1 : View List ['sshkey_deserialize_sk']	0	233	ssh_ecdsa_sk_deserialize_public	call site: 00000	/src/hpn-ssh/ssh-ecdsa-sk.c:133
0	222	1 : View List ['cert_free']	0	222	cert_new	call site: 00093	/src/hpn-ssh/sshkey.c:595
0	220	1 : View List ['sshkey_free']	0	220	sshkey_new	call site: 00091	/src/hpn-ssh/sshkey.c:630
0	203	1 : View List ['sshbuf_free']	0	203	sshbuf_froms	call site: 00066	/src/hpn-ssh/sshbuf-getput-basic.c:561
0	203	1 : View List ['sshbuf_free']	0	203	sshbuf_fromb	call site: 00080	/src/hpn-ssh/sshbuf.c:177

Runtime coverage analysis

Covered functions

153

Functions that are reachable but not covered

33

Reachable functions

81

Percentage of reachable functions covered

59.26%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
regress/misc/fuzz-harness/privkey_fuzz.cc	1
sshbuf.c	9
sshkey.c	14
sshbuf-getput-basic.c	4
misc.c	1
log.c	3
match.c	2
openbsd-compat/strlcpy.c	1
openbsd-compat/vis.c	2
openbsd-compat/freezero.c	1

Fuzzer: pubkey_fuzz

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	42	37.8%
gold	[1:9]	0	0.0%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	69	62.1%
All colors	111	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
158	158	5 : View List ['match_pattern_list', 'getpid', 'do_log', 'strrchr', 'strlcpy']	158	158	sshlogv	call site: 00013	/src/hpn-ssh/log.c:480
82	242	4 : View List ['sshkey_xmss_params', 'xmss_sign_open', 'malloc', 'sshlog']	82	455	ssh_xmss_verify	call site: 00000	/src/hpn-ssh/ssh-xmss.c:314
50	50	3 : View List ['sshkey_ec_validate_public', 'EC_KEY_get0_public_key', 'EC_KEY_get0_group']	52	52	ssh_ecdsa_deserialize_public	call site: 00000	/src/hpn-ssh/ssh-ecdsa.c:177
13	13	1 : View List ['rsa_hash_id_from_keyname']	21	703	ssh_rsa_verify	call site: 00000	/src/hpn-ssh/ssh-rsa.c:508
4	4	1 : View List ['timingsafe_bcmp']	4	9	openssh_RSA_verify	call site: 00000	/src/hpn-ssh/ssh-rsa.c:659
2	217	2 : View List ['EC_KEY_set_public_key', 'sshbuf_get_string_direct']	6	221	sshbuf_get_eckey	call site: 00000	/src/hpn-ssh/sshbuf-getput-crypto.c:110
2	2	1 : View List ['BN_clear_free']	2	2	sshbuf_get_bignum2	call site: 00000	/src/hpn-ssh/sshbuf-getput-crypto.c:48
2	2	1 : View List ['explicit_bzero']	2	2	sshkey_xmss_free_state	call site: 00000	/src/hpn-ssh/sshkey-xmss.c:144
0	233	1 : View List ['sshkey_deserialize_sk']	0	233	ssh_ecdsa_sk_deserialize_public	call site: 00000	/src/hpn-ssh/ssh-ecdsa-sk.c:133
0	222	1 : View List ['cert_free']	0	222	cert_new	call site: 00083	/src/hpn-ssh/sshkey.c:595
0	220	1 : View List ['sshkey_free']	0	220	sshkey_new	call site: 00081	/src/hpn-ssh/sshkey.c:630
0	203	1 : View List ['sshbuf_free']	0	203	sshbuf_froms	call site: 00000	/src/hpn-ssh/sshbuf-getput-basic.c:561

Runtime coverage analysis

Covered functions

137

Functions that are reachable but not covered

32

Reachable functions

77

Percentage of reachable functions covered

58.44%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
regress/misc/fuzz-harness/pubkey_fuzz.cc	1
sshkey.c	11
sshbuf.c	9
misc.c	1
log.c	3
match.c	2
openbsd-compat/strlcpy.c	1
openbsd-compat/vis.c	2
openbsd-compat/freezero.c	1
sshbuf-getput-basic.c	3

Fuzzer: sshsigopt_fuzz

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	0	0.0%
gold	[1:9]	0	0.0%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	31	100.%
All colors	31	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
0	0	None	2	2	opt_flag	call site: 00005	/src/hpn-ssh/misc.c:2564
0	0	None	0	3	sshsigopt_parse	call site: 00028	/src/hpn-ssh/sshsig.c:715
0	0	None	0	0	opt_dequote	call site: 00012	/src/hpn-ssh/misc.c:2588
0	0	None	0	0	sshsigopt_parse	call site: 00002	/src/hpn-ssh/sshsig.c:643

Runtime coverage analysis

Covered functions

7

Functions that are reachable but not covered

9

Reachable functions

16

Percentage of reachable functions covered

43.75%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
regress/misc/fuzz-harness/sshsigopt_fuzz.cc	1
sshsig.c	2
misc.c	4

Fuzzer: sshsig_fuzz

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	71	26.5%
gold	[1:9]	3	1.12%
yellow	[10:29]	1	0.37%
greenyellow	[30:49]	6	2.24%
lawngreen	50+	186	69.6%
All colors	267	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
166	166	1 : View List ['xstrdup']	166	166	tohex	call site: 00118	/src/hpn-ssh/misc.c:1548
162	162	1 : View List ['sshfatal']	162	162	xcalloc	call site: 00130	/src/hpn-ssh/xmalloc.c:56
122	158	5 : View List ['match_pattern_list', 'getpid', 'do_log', 'strrchr', 'strlcpy']	122	158	sshlogv	call site: 00023	/src/hpn-ssh/log.c:480
82	242	4 : View List ['sshkey_xmss_params', 'xmss_sign_open', 'malloc', 'sshlog']	82	455	ssh_xmss_verify	call site: 00000	/src/hpn-ssh/ssh-xmss.c:314
50	50	3 : View List ['sshkey_ec_validate_public', 'EC_KEY_get0_public_key', 'EC_KEY_get0_group']	52	52	ssh_ecdsa_deserialize_public	call site: 00000	/src/hpn-ssh/ssh-ecdsa.c:177
13	13	1 : View List ['rsa_hash_id_from_keyname']	21	703	ssh_rsa_verify	call site: 00000	/src/hpn-ssh/ssh-rsa.c:508
6	6	3 : View List ['openlog', 'closelog', 'exit']	6	6	log_init	call site: 00008	/src/hpn-ssh/log.c:220
2	217	2 : View List ['EC_KEY_set_public_key', 'sshbuf_get_string_direct']	6	221	sshbuf_get_eckey	call site: 00000	/src/hpn-ssh/sshbuf-getput-crypto.c:110
2	2	1 : View List ['strlen']	2	2	strlcat	call site: 00133	/src/hpn-ssh/openbsd-compat/strlcat.c:48
2	2	1 : View List ['BN_clear_free']	2	2	sshbuf_get_bignum2	call site: 00000	/src/hpn-ssh/sshbuf-getput-crypto.c:48
0	233	1 : View List ['sshkey_deserialize_sk']	0	233	ssh_ecdsa_sk_deserialize_public	call site: 00000	/src/hpn-ssh/ssh-ecdsa-sk.c:133
0	229	2 : View List ['ssh_err', 'sshlog']	2	434	hash_buffer	call site: 00143	/src/hpn-ssh/sshsig.c:428

Runtime coverage analysis

Covered functions

158

Functions that are reachable but not covered

38

Reachable functions

109

Percentage of reachable functions covered

65.14%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
regress/misc/fuzz-harness/sshsig_fuzz.cc	1
sshbuf.c	13
log.c	5
sshsig.c	6
misc.c	2
match.c	2
openbsd-compat/strlcpy.c	1
openbsd-compat/vis.c	2
openbsd-compat/freezero.c	1
sshbuf-misc.c	1
openbsd-compat/timingsafe_bcmp.c	1
sshbuf-getput-basic.c	10
ssherr.c	1
digest-openssl.c	5
xmalloc.c	3
fatal.c	1
cleanup.c	1
openbsd-compat/strlcat.c	1
openbsd-compat/recallocarray.c	1
sshkey.c	17

Fuzzer: sig_fuzz

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	67	61.4%
gold	[1:9]	8	7.33%
yellow	[10:29]	1	0.91%
greenyellow	[30:49]	1	0.91%
lawngreen	50+	32	29.3%
All colors	109	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
453	453	2 : View List ['cert_new', 'sshkey_free']	453	453	sshkey_new	call site: 00010	/src/hpn-ssh/sshkey.c:629
220	220	1 : View List ['sshkey_free']	220	220	sshkey_generate	call site: 00007	/src/hpn-ssh/sshkey.c:1414
164	164	1 : View List ['_getentropy_fail']	168	229	_rs_stir	call site: 00000	/src/hpn-ssh/openbsd-compat/arc4random.c:116
164	164	2 : View List ['ERR_get_error', 'sshfatal']	164	164	_ssh_compat_getentropy	call site: 00000	/src/hpn-ssh/openbsd-compat/bsd-getentropy.c:45
158	158	5 : View List ['match_pattern_list', 'getpid', 'do_log', 'strrchr', 'strlcpy']	158	158	sshlogv	call site: 00029	/src/hpn-ssh/log.c:480
73	73	2 : View List ['abort', 'ssh_err']	73	73	generate_or_die(int,unsignedint)	call site: 00000	/src/hpn-ssh/regress/misc/fuzz-harness/sig_fuzz.cc:18
13	13	1 : View List ['rsa_hash_id_from_keyname']	21	703	ssh_rsa_verify	call site: 00000	/src/hpn-ssh/ssh-rsa.c:508
4	4	1 : View List ['timingsafe_bcmp']	4	9	openssh_RSA_verify	call site: 00000	/src/hpn-ssh/ssh-rsa.c:659
2	2	1 : View List ['_exit']	2	2	_rs_init	call site: 00000	/src/hpn-ssh/openbsd-compat/arc4random.c:102
2	2	1 : View List ['memset']	2	2	_rs_forkdetect	call site: 00000	/src/hpn-ssh/openbsd-compat/./arc4random.h:58
2	2	1 : View List ['munmap']	2	2	_rs_allocate	call site: 00000	/src/hpn-ssh/openbsd-compat/./arc4random.h:71
2	2	1 : View List ['EC_KEY_free']	2	2	ssh_ecdsa_generate	call site: 00000	/src/hpn-ssh/ssh-ecdsa.c:135

Runtime coverage analysis

Covered functions

106

Functions that are reachable but not covered

39

Reachable functions

56

Percentage of reachable functions covered

30.36%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
regress/misc/fuzz-harness/sig_fuzz.cc	2
sshkey.c	13
sshbuf.c	3
misc.c	1
log.c	3
match.c	2
openbsd-compat/strlcpy.c	1
openbsd-compat/vis.c	2
openbsd-compat/freezero.c	1
ssherr.c	1

Fuzzer: agent_fuzz

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	1238	69.1%
gold	[1:9]	69	3.85%
yellow	[10:29]	32	1.78%
greenyellow	[30:49]	8	0.44%
lawngreen	50+	443	24.7%
All colors	1790	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
3909	5572	17 : View List ['sshkey_fingerprint', 'sshkey_sign', 'identity_permitted', 'buf_equal', 'notify_start', 'check_websafe_message_contents', 'agent_decode_alg', 'sshbuf_ptr', 'confirm_key', 'lookup_identity', 'sshkey_type', 'sshkey_equal', 'read_passphrase', 'sshkey_is_sk', 'strncmp', 'sshbuf_len', 'parse_userauth_request']	4559	10792	process_sign_request2	call site: 00813	/src/hpn-ssh/regress/misc/fuzz-harness/../../../ssh-agent.c:855
2532	4098	20 : View List ['sshkey_fingerprint', 'sshfatal', 'strerror', 'match_pattern_list', 'strcasecmp', 'parse_key_constraints', 'monotime', 'sshbuf_reset', 'dump_dest_constraints', 'realpath', '__errno_location', 'socket_is_remote', 'sshkey_shield_private', 'identity_permitted', 'xcalloc', 'lookup_identity', 'sshkey_type', 'sshkey_ssh_name', 'xstrdup', 'sshkey_is_sk']	2532	6669	process_add_identity	call site: 01297	/src/hpn-ssh/regress/misc/fuzz-harness/../../../ssh-agent.c:1361
1578	3222	6 : View List ['sshkey_fingerprint', 'sshkey_type', 'permitted_by_dest_constraints', 'sshlog', 'sshfatal', 'free']	1578	3222	identity_permitted	call site: 00916	/src/hpn-ssh/regress/misc/fuzz-harness/../../../ssh-agent.c:483
761	761	1 : View List ['process_ext_session_bind']	761	1107	process_extension	call site: 01745	/src/hpn-ssh/regress/misc/fuzz-harness/../../../ssh-agent.c:1780
428	428	1 : View List ['sshkey_parse_private_pem_fileblob']	428	428	sshkey_parse_private_fileblob_type	call site: 00561	/src/hpn-ssh/sshkey.c:3596
400	1194	4 : View List ['free_identity', 'identity_permitted', 'lookup_identity', 'sshfatal']	400	1918	process_remove_identity	call site: 01430	/src/hpn-ssh/regress/misc/fuzz-harness/../../../ssh-agent.c:1000
354	356	8 : View List ['EVP_CIPHER_CTX_ctrl', 'strstr', 'EVP_CIPHER_CTX_key_length', 'EVP_CIPHER_CTX_set_key_length', 'evp_aes_ctr_mt', 'EVP_CIPHER_CTX_new', 'EVP_CipherInit', 'cipher_authlen']	356	363	cipher_init	call site: 00354	/src/hpn-ssh/cipher.c:361
344	344	6 : View List ['waitpid', 'ssh_signal', 'kill', 'sshfatal', 'strerror', '__errno_location']	344	344	notify_complete	call site: 01237	/src/hpn-ssh/readpass.c:319
286	286	2 : View List ['chachapoly_new_mt', 'chachapoly_new']	288	293	cipher_init	call site: 00304	/src/hpn-ssh/cipher.c:345
268	268	2 : View List ['chachapoly_crypt', 'chachapoly_crypt_mt']	268	268	cipher_crypt	call site: 00465	/src/hpn-ssh/cipher.c:480
202	202	2 : View List ['chachapoly_free_mt', 'chachapoly_free']	206	211	cipher_free	call site: 00515	/src/hpn-ssh/cipher.c:570
202	202	1 : View List ['cert_compare']	202	221	sshkey_equal	call site: 00548	/src/hpn-ssh/sshkey.c:721

Runtime coverage analysis

Covered functions

249

Functions that are reachable but not covered

345

Reachable functions

510

Percentage of reachable functions covered

32.35%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
regress/misc/fuzz-harness/agent_fuzz.cc	1
regress/misc/fuzz-harness/agent_fuzz_helper.c	10
log.c	5
match.c	2
openbsd-compat/strlcpy.c	1
openbsd-compat/vis.c	2
xmalloc.c	6
fatal.c	1
regress/misc/fuzz-harness/../../../ssh-agent.c	40
ssh-pkcs11.c	30
sshkey.c	68
sshbuf.c	14
misc.c	6
openbsd-compat/freezero.c	1
sshbuf-getput-basic.c	17
openbsd-compat/recallocarray.c	1
sshbuf-misc.c	2
openbsd-compat/base64.c	2
cipher.c	8
openbsd-compat/bcrypt_pbkdf.c	2
hash.c	1
openbsd-compat/blowfish.c	6
openbsd-compat/arc4random.c	6
openbsd-compat/./arc4random.h	3
openbsd-compat/bsd-getentropy.c	1
openbsd-compat/./chacha_private.h	3
cipher-chachapoly-libcrypto-mt.c	10
cipher-chachapoly-libcrypto.c	3
cipher-ctr-mt.c	7
openbsd-compat/timingsafe_bcmp.c	1
poly1305.c	1
ssherr.c	1
digest-openssl.c	4
openbsd-compat/strlcat.c	1
readpass.c	6
openbsd-compat/readpassphrase.c	1
openbsd-compat/bsd-closefrom.c	2
ssh-sk.c	8
sshkey-xmss.c	1

Fuzzer: kex_fuzz

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	888	55.3%
gold	[1:9]	177	11.0%
yellow	[10:29]	2	0.12%
greenyellow	[30:49]	16	0.99%
lawngreen	50+	520	32.4%
All colors	1603	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
1637	4037	9 : View List ['sshbuf_free', 'memset', 'ssh_packet_send2_wrapped', 'sshlog', 'kex_start_rekex', 'ssh_packet_need_rekeying', 'monotime', 'free', 'sshbuf_len']	1637	4037	ssh_packet_send2	call site: 00929	/src/hpn-ssh/packet.c:1378
1461	1461	1 : View List ['ssh_packet_disconnect']	2314	2845	ssh_packet_send2_wrapped	call site: 01073	/src/hpn-ssh/packet.c:1287
1461	1461	1 : View List ['ssh_packet_disconnect']	2054	5332	kex_choose_conf	call site: 01289	/src/hpn-ssh/kex.c:1286
1461	1461	1 : View List ['ssh_packet_disconnect']	1912	8733	ssh_packet_read_poll2	call site: 01528	/src/hpn-ssh/packet.c:1698
790	790	4 : View List ['get_local_ipaddr', 'get_peer_ipaddr', 'get_peer_port', 'get_local_port']	790	790	ssh_remote_ipaddr	call site: 00755	/src/hpn-ssh/packet.c:548
657	657	1 : View List ['ssh_set_newkeys']	657	657	ssh_packet_send2_wrapped	call site: 01151	/src/hpn-ssh/packet.c:1306
604	920	4 : View List ['free', 'match_filter_denylist', 'sshlog', 'sshfatal']	604	920	compat_kex_proposal	call site: 00813	/src/hpn-ssh/compat.c:176
593	2930	16 : View List ['strcmp', 'calloc', 'sshfatal', 'proposals_match', 'ssh_remote_ipaddr', 'choose_enc', 'sshlog', 'choose_mac', 'choose_comp', 'cipher_by_name', 'xstrdup', 'ssh_remote_port', 'cipher_seclen', 'free', 'match_list', 'cipher_authlen']	593	2938	kex_choose_conf	call site: 01334	/src/hpn-ssh/kex.c:1369
548	755	7 : View List ['ssh_packet_write_poll', 'ms_subtract_diff', '__errno_location', 'ppoll', 'ms_to_timespec', 'ssh_packet_have_data_to_write', 'monotime_tv']	548	755	ssh_packet_write_wait	call site: 01127	/src/hpn-ssh/packet.c:2142
469	847	2 : View List ['sshbuf_len', 'ssh_packet_stop_discard']	469	847	ssh_packet_start_discard	call site: 01497	/src/hpn-ssh/packet.c:439
428	428	1 : View List ['sshkey_parse_private_pem_fileblob']	428	428	sshkey_parse_private_fileblob_type	call site: 00531	/src/hpn-ssh/sshkey.c:3596
354	356	8 : View List ['EVP_CIPHER_CTX_ctrl', 'strstr', 'EVP_CIPHER_CTX_key_length', 'EVP_CIPHER_CTX_set_key_length', 'evp_aes_ctr_mt', 'EVP_CIPHER_CTX_new', 'EVP_CipherInit', 'cipher_authlen']	356	363	cipher_init	call site: 00323	/src/hpn-ssh/cipher.c:361

Runtime coverage analysis

Covered functions

230

Functions that are reachable but not covered

312

Reachable functions

524

Percentage of reachable functions covered

40.46%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
regress/misc/fuzz-harness/kex_fuzz.cc	11
log.c	6
xmalloc.c	5
fatal.c	1
match.c	5
openbsd-compat/strlcpy.c	1
openbsd-compat/vis.c	2
cleanup.c	1
sshbuf.c	18
sshkey.c	42
misc.c	11
sshbuf-getput-basic.c	15
openbsd-compat/recallocarray.c	1
sshbuf-misc.c	2
openbsd-compat/base64.c	1
openbsd-compat/freezero.c	1
cipher.c	14
openbsd-compat/bcrypt_pbkdf.c	2
hash.c	1
openbsd-compat/blowfish.c	6
openbsd-compat/arc4random.c	6
openbsd-compat/./arc4random.h	3
openbsd-compat/bsd-getentropy.c	1
openbsd-compat/./chacha_private.h	3
cipher-chachapoly-libcrypto-mt.c	11
cipher-chachapoly-libcrypto.c	4
cipher-ctr-mt.c	7
openbsd-compat/timingsafe_bcmp.c	1
poly1305.c	1
ssherr.c	1
ssh_api.c	11
entropy.c	1
openbsd-compat/openssl-compat.c	2
packet.c	50
kex.c	26
mac.c	6
umac.c	27
./umac.c	27
hmac.c	6
digest-openssl.c	9
canohost.c	7
openbsd-compat/strlcat.c	1
compat.c	2
dispatch.c	2
openbsd-compat/fmt_scaled.c	1

Optimal target analysis

Remaining optimal interesting functions

The following table shows a list of functions that are optimal targets. Optimal targets are identified by finding the functions that in combination, yield a high code coverage.

Func name	Functions filename	Arg count	Args	Function depth	hitcount	instr count	bb count	cyclomatic complexity	Reachable functions	Incoming references	total cyclomatic complexity	Unreached complexity
sshkey_check_revoked	/src/hpn-ssh/authfile.c	2	['N/A', 'N/A']	22	0	58	9	2	179	0	1405	650
kex_gen_client	/src/hpn-ssh/kexgen.c	1	['N/A']	27	0	134	24	5	516	0	2553	583
ssh_xmss_sign	/src/hpn-ssh/ssh-xmss.c	9	['N/A', 'N/A', 'N/A', 'N/A', 'size_t', 'N/A', 'N/A', 'N/A', 'int']	15	0	375	67	27	215	0	1138	339
xxxmain	/src/hpn-ssh/regress/misc/fuzz-harness/../../../ssh-agent.c	2	['int', 'N/A']	19	0	848	142	33	505	0	2798	297
kexgex_server	/src/hpn-ssh/kexgexs.c	1	['N/A']	28	0	17	3	2	441	0	2288	174
ssh_sk_sign	/src/hpn-ssh/regress/misc/sk-dummy/sk-dummy.c	10	['int', 'N/A', 'size_t', 'N/A', 'N/A', 'size_t', 'char', 'N/A', 'N/A', 'N/A']	7	0	180	22	7	63	0	199	162
sshauthopt_from_cert	/src/hpn-ssh/auth-options.c	1	['N/A']	7	0	108	19	9	73	0	490	129
sshkey_save_private	/src/hpn-ssh/authfile.c	7	['N/A', 'N/A', 'N/A', 'N/A', 'int', 'N/A', 'int']	22	0	86	11	5	257	0	1351	127
ssh_krl_to_blob	/src/hpn-ssh/krl.c	2	['N/A', 'N/A']	17	0	412	78	30	79	0	492	96
sshsig_find_principals	/src/hpn-ssh/sshsig.c	4	['N/A', 'N/A', 'size_t', 'N/A']	13	0	143	16	7	124	0	868	84

Implementing fuzzers that target the above functions will improve reachability such that it becomes:

Functions statically reachable by fuzzers

847 / 1318

Cyclomatic complexity statically reachable by fuzzers

6354 / 9452

All functions overview

If you implement fuzzers for these functions, the status of all functions in the project will be:

Func name	Functions filename	Args	Function call depth	Reached by Fuzzers	Fuzzers runtime hit	Func lines hit %	I Count	BB Count	Cyclomatic complexity	Functions reached	Reached by functions	Accumulated cyclomatic complexity	Undiscovered complexity

This sections provides heuristics that can be used as input to a fuzz engine when running a given fuzz target. The current focus is on providing input that is usable by libFuzzer.

regress/misc/fuzz-harness/authopt_fuzz.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['sshauthopt_parse', 'recallocarray', 'sshauthopt_merge', 'a2port', 'dup_strings']

regress/misc/fuzz-harness/privkey_fuzz.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['sshlog', 'sshbuf_ptr', 'sshkey_private_deserialize', 'sshbuf_set_parent', 'sshbuf_fromb', 'cert_new', 'sshkey_free']

regress/misc/fuzz-harness/pubkey_fuzz.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['sshlog', 'sshbuf_fromb', 'sshbuf_set_parent', 'cert_new', 'sshkey_free']

regress/misc/fuzz-harness/sshsigopt_fuzz.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

regress/misc/fuzz-harness/sshsig_fuzz.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['match_pattern_list', 'hash_buffer', 'log_init', 'sshbuf_fromb', 'sshlog', 'ssh_digest_memory', 'tohex', 'sshbuf_allocate', 'sshbuf_put_stringb', 'sshsig_wrap_verify']

regress/misc/fuzz-harness/sig_fuzz.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['sshlog', 'freezero', 'sshkey_is_cert', 'sshbuf_free']

regress/misc/fuzz-harness/agent_fuzz.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['identity_permitted', 'process_add_smartcard_key', 'cipher_init', 'process_add_identity', 'private2_decrypt', 'sshkey_ssh_name', 'sshkey_fingerprint', 'sshkey_verify', 'sshkey_parse_private_fileblob_type', 'xstrdup']

regress/misc/fuzz-harness/kex_fuzz.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['cipher_init', 'ssh_digest_bytes', 'ssh_packet_send2_wrapped', 'private2_decrypt', 'sshbuf_get_string', 'ssh_remote_ipaddr', 'ssh_packet_close_internal', 'choose_comp', 'sshkey_parse_private_fileblob_type', 'ssh_packet_next']

This section shows analysis of runtime coverage data.

For futher technical details on how this section is generated, please see the Glossary .

Complex functions with low coverage

Func name	Function total lines	Lines covered at runtime	percentage covered	Reached by fuzzers
sshauthopt_merge	94	51	54.25%	['authopt_fuzz']
openssh_RSA_verify	43	21	48.83%	[]
log_init	61	8	13.11%	['sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']
ssh_err	128	58	45.31%	['sshsig_fuzz', 'sig_fuzz', 'agent_fuzz', 'kex_fuzz']
cipher_init	82	25	30.48%	['agent_fuzz', 'kex_fuzz']
cipher_crypt	50	6	12.0%	['agent_fuzz', 'kex_fuzz']
vis	81	14	17.28%	['authopt_fuzz', 'privkey_fuzz', 'pubkey_fuzz', 'sshsig_fuzz', 'sig_fuzz', 'agent_fuzz', 'kex_fuzz']
process_sign_request2	130	37	28.46%	['agent_fuzz']
identity_permitted	68	12	17.64%	['agent_fuzz']
process_add_identity	104	25	24.03%	['agent_fuzz']
process_add_smartcard_key	82	27	32.92%	['agent_fuzz']
sshkey_fingerprint	38	17	44.73%	['agent_fuzz']
private2_decrypt	122	66	54.09%	['agent_fuzz', 'kex_fuzz']
kex_send_kexinit	31	17	54.83%	['kex_fuzz']
kex_choose_conf	165	90	54.54%	['kex_fuzz']
ssh_packet_send2_wrapped	130	55	42.30%	['kex_fuzz']
ssh_packet_send2	54	16	29.62%	['kex_fuzz']
ssh_packet_read_poll2	179	96	53.63%	['kex_fuzz']
ssh_packet_write_wait	40	8	20.0%	['kex_fuzz']

This section shows which files and directories are considered in this report. The main reason for showing this is fuzz introspector may include more code in the reasoning than is desired. This section helps identify if too many files/directories are included, e.g. third party code, which may be irrelevant for the threat model. In the event too much is included, fuzz introspector supports a configuration file that can exclude data from the report. See the following link for more information on how to create a config file: link

Files in report

Source file	Reached by	Covered by
	[]	[]
/src/hpn-ssh/openbsd-compat/bsd-closefrom.c	['agent_fuzz']	[]
/src/hpn-ssh/addr.c	[]	[]
/src/hpn-ssh/fatal.c	['authopt_fuzz', 'sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']	[]
/src/hpn-ssh/openbsd-compat/readpassphrase.c	['agent_fuzz']	[]
/src/hpn-ssh/openbsd-compat/./chacha_private.h	['agent_fuzz', 'kex_fuzz']	[]
/src/hpn-ssh/kexc25519.c	[]	[]
/src/hpn-ssh/regress/misc/fuzz-harness/sig_fuzz.cc	['sig_fuzz']	['sig_fuzz']
/src/hpn-ssh/ssh-rsa.c	[]	[]
/src/hpn-ssh/xmss_hash.c	[]	[]
/src/hpn-ssh/hash.c	['agent_fuzz', 'kex_fuzz']	['agent_fuzz']
/src/hpn-ssh/regress/misc/fuzz-harness/agent_fuzz.cc	['agent_fuzz']	['agent_fuzz']
/src/hpn-ssh/openbsd-compat/recallocarray.c	['authopt_fuzz', 'sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']	['authopt_fuzz', 'sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/hpn-ssh/regress/misc/fuzz-harness/privkey_fuzz.cc	['privkey_fuzz']	['privkey_fuzz']
/src/hpn-ssh/umac.c	['kex_fuzz']	[]
/src/hpn-ssh/platform-tracing.c	[]	[]
/src/hpn-ssh/openbsd-compat/strtonum.c	['authopt_fuzz']	['authopt_fuzz']
/src/hpn-ssh/ssh-ed25519.c	[]	[]
/src/hpn-ssh/regress/misc/fuzz-harness/../../../ssh-agent.c	['agent_fuzz']	[]
/src/hpn-ssh/regress/misc/fuzz-harness/pubkey_fuzz.cc	['pubkey_fuzz']	['pubkey_fuzz']
/src/hpn-ssh/bitmap.c	[]	[]
/src/hpn-ssh/regress/misc/fuzz-harness/kex_fuzz.cc	['kex_fuzz']	['kex_fuzz']
/src/hpn-ssh/openbsd-compat/vis.c	['authopt_fuzz', 'privkey_fuzz', 'pubkey_fuzz', 'sshsig_fuzz', 'sig_fuzz', 'agent_fuzz', 'kex_fuzz']	['agent_fuzz', 'kex_fuzz']
/src/hpn-ssh/kexgexs.c	[]	[]
/src/hpn-ssh/openbsd-compat/libressl-api-compat.c	[]	[]
/src/hpn-ssh/sshbuf-io.c	[]	[]
/src/hpn-ssh/dh.c	[]	[]
/src/hpn-ssh/kexecdh.c	[]	[]
/src/hpn-ssh/openbsd-compat/blowfish.c	['agent_fuzz', 'kex_fuzz']	['agent_fuzz']
/src/hpn-ssh/ssh-dss.c	[]	[]
/src/hpn-ssh/xmss_hash_address.c	[]	[]
/src/hpn-ssh/./umac.c	['kex_fuzz']	[]
/src/hpn-ssh/kexdh.c	[]	[]
/src/hpn-ssh/auth-options.c	['authopt_fuzz']	['authopt_fuzz']
/src/hpn-ssh/openbsd-compat/timingsafe_bcmp.c	['sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']	['sshsig_fuzz', 'agent_fuzz']
/src/hpn-ssh/sshbuf.c	['privkey_fuzz', 'pubkey_fuzz', 'sshsig_fuzz', 'sig_fuzz', 'agent_fuzz', 'kex_fuzz']	['privkey_fuzz', 'pubkey_fuzz', 'sshsig_fuzz', 'sig_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/hpn-ssh/openbsd-compat/getopt_long.c	[]	[]
/src/hpn-ssh/sshkey.c	['privkey_fuzz', 'pubkey_fuzz', 'sshsig_fuzz', 'sig_fuzz', 'agent_fuzz', 'kex_fuzz']	['privkey_fuzz', 'pubkey_fuzz', 'sshsig_fuzz', 'sig_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/hpn-ssh/xmss_fast.c	[]	[]
/src/hpn-ssh/cipher.c	['agent_fuzz', 'kex_fuzz']	['agent_fuzz', 'kex_fuzz']
/src/hpn-ssh/xmss_wots.c	[]	[]
/src/hpn-ssh/openbsd-compat/bsd-getpeereid.c	[]	[]
/src/hpn-ssh/openbsd-compat/port-net.c	[]	[]
/src/hpn-ssh/platform-pledge.c	[]	[]
/src/hpn-ssh/cipher-chachapoly-libcrypto.c	['agent_fuzz', 'kex_fuzz']	[]
/src/hpn-ssh/kexsntrup761x25519.c	[]	[]
/src/hpn-ssh/krl.c	[]	[]
/src/hpn-ssh/regress/misc/sk-dummy/sk-dummy.c	[]	[]
/src/hpn-ssh/authfile.c	[]	[]
/src/hpn-ssh/regress/misc/fuzz-harness/agent_fuzz_helper.c	['agent_fuzz']	['agent_fuzz']
/src/hpn-ssh/xmalloc.c	['authopt_fuzz', 'sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']	['sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/hpn-ssh/kexgen.c	[]	[]
/src/hpn-ssh/dispatch.c	['kex_fuzz']	['kex_fuzz']
/src/hpn-ssh/openbsd-compat/freezero.c	['authopt_fuzz', 'privkey_fuzz', 'pubkey_fuzz', 'sshsig_fuzz', 'sig_fuzz', 'agent_fuzz', 'kex_fuzz']	['authopt_fuzz', 'privkey_fuzz', 'pubkey_fuzz', 'sshsig_fuzz', 'sig_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/hpn-ssh/log.c	['authopt_fuzz', 'privkey_fuzz', 'pubkey_fuzz', 'sshsig_fuzz', 'sig_fuzz', 'agent_fuzz', 'kex_fuzz']	['privkey_fuzz', 'pubkey_fuzz', 'sshsig_fuzz', 'sig_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/hpn-ssh/platform-misc.c	[]	[]
/src/hpn-ssh/poly1305.c	['agent_fuzz', 'kex_fuzz']	[]
/src/hpn-ssh/utf8.c	[]	[]
/src/hpn-ssh/openbsd-compat/bsd-misc.c	[]	[]
/src/hpn-ssh/openbsd-compat/base64.c	['agent_fuzz', 'kex_fuzz']	['agent_fuzz', 'kex_fuzz']
/src/hpn-ssh/openbsd-compat/openssl-compat.c	['kex_fuzz']	['kex_fuzz']
/src/hpn-ssh/misc.c	['authopt_fuzz', 'privkey_fuzz', 'pubkey_fuzz', 'sshsigopt_fuzz', 'sshsig_fuzz', 'sig_fuzz', 'agent_fuzz', 'kex_fuzz']	['authopt_fuzz', 'sshsigopt_fuzz', 'sshsig_fuzz', 'agent_fuzz']
/src/hpn-ssh/cipher-chachapoly-libcrypto-mt.c	['agent_fuzz', 'kex_fuzz']	[]
/src/hpn-ssh/regress/misc/fuzz-harness/ssh-sk-null.cc	[]	[]
/src/hpn-ssh/regress/misc/fuzz-harness/sshsig_fuzz.cc	['sshsig_fuzz']	['sshsig_fuzz']
/src/hpn-ssh/openbsd-compat/fmt_scaled.c	['kex_fuzz']	[]
/src/hpn-ssh/openbsd-compat/arc4random_uniform.c	[]	[]
/src/hpn-ssh/compat.c	['kex_fuzz']	['kex_fuzz']
/src/hpn-ssh/entropy.c	['kex_fuzz']	['kex_fuzz']
/src/hpn-ssh/ssh-sk.c	['agent_fuzz']	[]
/src/hpn-ssh/kex.c	['kex_fuzz']	['kex_fuzz']
/src/hpn-ssh/kexgexc.c	[]	[]
/src/hpn-ssh/ssh-xmss.c	[]	[]
/src/hpn-ssh/openbsd-compat/strlcat.c	['sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']	['sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/hpn-ssh/match.c	['authopt_fuzz', 'privkey_fuzz', 'pubkey_fuzz', 'sshsig_fuzz', 'sig_fuzz', 'agent_fuzz', 'kex_fuzz']	['sshsig_fuzz', 'kex_fuzz']
/src/hpn-ssh/openbsd-compat/bcrypt_pbkdf.c	['agent_fuzz', 'kex_fuzz']	['agent_fuzz']
/src/hpn-ssh/ssh-pkcs11.c	['agent_fuzz']	[]
/src/hpn-ssh/sshbuf-misc.c	['sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']	['sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/hpn-ssh/ssh-ecdsa.c	[]	[]
/src/hpn-ssh/xmss_commons.c	[]	[]
/src/hpn-ssh/mac.c	['kex_fuzz']	['kex_fuzz']
/src/hpn-ssh/sshkey-xmss.c	['agent_fuzz']	[]
/src/hpn-ssh/digest-openssl.c	['sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']	['sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/hpn-ssh/sntrup761.c	[]	[]
/src/hpn-ssh/openbsd-compat/bsd-getentropy.c	['agent_fuzz', 'kex_fuzz']	['agent_fuzz', 'kex_fuzz']
/src/hpn-ssh/smult_curve25519_ref.c	[]	[]
/src/hpn-ssh/readpass.c	['agent_fuzz']	['agent_fuzz']
/src/hpn-ssh/cleanup.c	['authopt_fuzz', 'sshsig_fuzz', 'kex_fuzz']	[]
/src/hpn-ssh/addrmatch.c	[]	[]
/src/hpn-ssh/sshbuf-getput-crypto.c	[]	[]
/src/hpn-ssh/openbsd-compat/arc4random.c	['agent_fuzz', 'kex_fuzz']	['agent_fuzz', 'kex_fuzz']
/src/hpn-ssh/atomicio.c	[]	[]
/src/hpn-ssh/kexgex.c	[]	[]
/src/hpn-ssh/cipher-ctr-mt.c	['agent_fuzz', 'kex_fuzz']	[]
/src/hpn-ssh/ssh-ecdsa-sk.c	[]	[]
/src/hpn-ssh/hmac.c	['kex_fuzz']	['kex_fuzz']
/src/hpn-ssh/regress/misc/fuzz-harness/sshsigopt_fuzz.cc	['sshsigopt_fuzz']	['sshsigopt_fuzz']
/src/hpn-ssh/packet.c	['kex_fuzz']	['kex_fuzz']
/src/hpn-ssh/ed25519.c	[]	[]
/src/hpn-ssh/ssh-ed25519-sk.c	[]	[]
/src/hpn-ssh/openbsd-compat/strlcpy.c	['authopt_fuzz', 'privkey_fuzz', 'pubkey_fuzz', 'sshsig_fuzz', 'sig_fuzz', 'agent_fuzz', 'kex_fuzz']	['agent_fuzz', 'kex_fuzz']
/src/hpn-ssh/canohost.c	['kex_fuzz']	[]
/src/hpn-ssh/sshsig.c	['sshsigopt_fuzz', 'sshsig_fuzz']	['sshsigopt_fuzz', 'sshsig_fuzz']
/src/hpn-ssh/ssh_api.c	['kex_fuzz']	['kex_fuzz']
/src/hpn-ssh/regress/misc/fuzz-harness/authopt_fuzz.cc	['authopt_fuzz']	['authopt_fuzz']
/src/hpn-ssh/ssherr.c	['sshsig_fuzz', 'sig_fuzz', 'agent_fuzz', 'kex_fuzz']	['sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/hpn-ssh/sshbuf-getput-basic.c	['privkey_fuzz', 'pubkey_fuzz', 'sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']	['privkey_fuzz', 'pubkey_fuzz', 'sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/hpn-ssh/openbsd-compat/./arc4random.h	['agent_fuzz', 'kex_fuzz']	[]

Directories in report

Directory
/src/hpn-ssh/openbsd-compat/
/src/hpn-ssh/regress/misc/fuzz-harness/
/src/hpn-ssh/openbsd-compat/./
/src/hpn-ssh/regress/misc/sk-dummy/
/src/hpn-ssh/
/src/hpn-ssh/./
/src/hpn-ssh/regress/misc/fuzz-harness/../../../