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| author | David Goulet <dgoulet@torproject.org> | 2016-05-03 10:57:49 -0400 |
|---|---|---|
| committer | David Goulet <dgoulet@torproject.org> | 2016-07-01 13:23:27 -0400 |
| commit | 5b183328fdd4bf81a3a38afe88d2766e61773fb9 (patch) | |
| tree | ab21de7b641144ce46392f9cb38892d8dbf5c807 /src/or/shared_random.h | |
| parent | b3b4ffce2e23bfb6a2af374cd8bfa5981628a342 (diff) | |
| download | tor-5b183328fdd4bf81a3a38afe88d2766e61773fb9.tar.gz tor-5b183328fdd4bf81a3a38afe88d2766e61773fb9.zip | |
prop250: Add commit and SR values generation code
This adds the logic of commit and SR values generation. Furthermore, the
concept of a protocol run is added that is commit is generated at the right
time as well as SR values which are also rotated before a new protocol run.
Signed-off-by: George Kadianakis <desnacked@riseup.net>
Signed-off-by: David Goulet <dgoulet@torproject.org>
Diffstat (limited to 'src/or/shared_random.h')
| -rw-r--r-- | src/or/shared_random.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/or/shared_random.h b/src/or/shared_random.h index 447de0c4b5..878bfbff45 100644 --- a/src/or/shared_random.h +++ b/src/or/shared_random.h @@ -42,6 +42,11 @@ * Formula is taken from base64_encode_size. This adds up to 56 bytes. */ #define SR_REVEAL_BASE64_LEN \ (((SR_REVEAL_LEN - 1) / 3) * 4 + 4) +/* Length of base64 encoded shared random value. It's 32 bytes long so 44 + * bytes from the base64_encode_size formula. That includes the '=' + * character at the end. */ +#define SR_SRV_VALUE_BASE64_LEN \ + (((DIGEST256_LEN - 1) / 3) * 4 + 4) /* Protocol phase. */ typedef enum { @@ -97,18 +102,27 @@ typedef struct sr_commit_t { int sr_init(int save_to_disk); void sr_save_and_cleanup(void); void sr_commit_free(sr_commit_t *commit); +void sr_srv_encode(char *dst, const sr_srv_t *srv); /* Private methods (only used by shared_random_state.c): */ sr_commit_t *sr_parse_commit(const smartlist_t *args); sr_srv_t *sr_parse_srv(const smartlist_t *args); +void sr_compute_srv(void); +sr_commit_t *sr_generate_our_commit(time_t timestamp, + const authority_cert_t *my_rsa_cert); #ifdef SHARED_RANDOM_PRIVATE +/* Encode */ +STATIC int reveal_encode(const sr_commit_t *commit, char *dst, size_t len); +STATIC int commit_encode(const sr_commit_t *commit, char *dst, size_t len); /* Decode. */ STATIC int commit_decode(const char *encoded, sr_commit_t *commit); STATIC int reveal_decode(const char *encoded, sr_commit_t *commit); +STATIC int commit_has_reveal_value(const sr_commit_t *commit); + #endif /* SHARED_RANDOM_PRIVATE */ #endif /* TOR_SHARED_RANDOM_H */ |