Mercurial > dropbear
view fuzz.h @ 1638:315fcba6960e
dropbearconvert: keyimport.c: fix BER encoding of secp521r1 keys (#69)
keysizes >= 128 octets will be encoded with a 3 byte header
which must be accounted by the optional-header
Reproduce:
master:~/build/dropbear$ ./dropbearkey -t ecdsa -s 521 -f K
Generating 521 bit ecdsa key, this may take a while...
master:~/build/dropbear$ ./dropbearconvert d o K L
Key is a ecdsa-sha2-nistp521 key
Wrote key to 'L'
master:~/build/dropbear$ openssl ec < L
read EC key
unable to load Key
139769806448384:error:0D07209B:asn1 encoding routines:ASN1_get_object:too long:crypto/asn1/asn1_lib.c:91:
author | Christian Hohnstädt <christian@hohnstaedt.de> |
---|---|
date | Wed, 20 Mar 2019 16:42:47 +0100 |
parents | 35af85194268 |
children | dfbe947bdf0d |
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#ifndef DROPBEAR_FUZZ_H #define DROPBEAR_FUZZ_H #include "config.h" #if DROPBEAR_FUZZ #include "includes.h" #include "buffer.h" #include "algo.h" #include "fuzz-wrapfd.h" // once per process void fuzz_common_setup(void); void fuzz_svr_setup(void); // must be called once per fuzz iteration. // returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE int fuzz_set_input(const uint8_t *Data, size_t Size); int fuzz_run_preauth(const uint8_t *Data, size_t Size, int skip_kexmaths); const void* fuzz_get_algo(const algo_type *algos, const char* name); // fuzzer functions that intrude into general code void fuzz_kex_fakealgos(void); int fuzz_checkpubkey_line(buffer* line, int line_num, char* filename, const char* algo, unsigned int algolen, const unsigned char* keyblob, unsigned int keybloblen); extern const char * const * fuzz_signkey_names; void fuzz_seed(void); void fuzz_get_socket_address(int fd, char **local_host, char **local_port, char **remote_host, char **remote_port, int host_lookup); void fuzz_fake_send_kexdh_reply(void); // fake IO wrappers #ifndef FUZZ_SKIP_WRAP #define select(nfds, readfds, writefds, exceptfds, timeout) \ wrapfd_select(nfds, readfds, writefds, exceptfds, timeout) #define write(fd, buf, count) wrapfd_write(fd, buf, count) #define read(fd, buf, count) wrapfd_read(fd, buf, count) #define close(fd) wrapfd_close(fd) #endif // FUZZ_SKIP_WRAP struct dropbear_fuzz_options { int fuzzing; // fuzzing input buffer *input; struct dropbear_cipher recv_cipher; struct dropbear_hash recv_mac; int wrapfds; // whether to skip slow bignum maths int skip_kexmaths; // dropbear_exit() jumps back int do_jmp; sigjmp_buf jmp; uid_t pw_uid; gid_t pw_gid; char* pw_name; char* pw_dir; char* pw_shell; char* pw_passwd; }; extern struct dropbear_fuzz_options fuzz; #endif // DROPBEAR_FUZZ #endif /* DROPBEAR_FUZZ_H */