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Add some simple impersonation detection on friend requests

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This will alert the user when the first six bytes of a new
contact's public key is the same as any other contact in
their list. These 6 bytes are used elsewhere in toxic for
unique identification.

Also did a small refactor regarding the KEY_IDENT_BYTES
define
This commit is contained in:
jfreegman
2022-01-23 11:32:57 -05:00
parent 05dbc626e2
commit f6f41a510b
4 changed files with 37 additions and 12 deletions
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8
src/log.c
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@ -62,21 +62,21 @@ static int get_log_path(char *dest, int destsize, const char *name, const char *
/* first 6 bytes of selfkey */
char self_id[32] = {0};
path_len += KEY_IDENT_DIGITS * 2;
path_len += KEY_IDENT_BYTES;
sprintf(&self_id[0], "%02X", selfkey[0] & 0xff);
sprintf(&self_id[2], "%02X", selfkey[1] & 0xff);
sprintf(&self_id[4], "%02X", selfkey[2] & 0xff);
self_id[KEY_IDENT_DIGITS * 2] = '\0';
self_id[KEY_IDENT_BYTES] = '\0';
char other_id[32] = {0};
if (otherkey) {
/* first 6 bytes of otherkey */
path_len += KEY_IDENT_DIGITS * 2;
path_len += KEY_IDENT_BYTES;
sprintf(&other_id[0], "%02X", otherkey[0] & 0xff);
sprintf(&other_id[2], "%02X", otherkey[1] & 0xff);
sprintf(&other_id[4], "%02X", otherkey[2] & 0xff);
other_id[KEY_IDENT_DIGITS * 2] = '\0';
other_id[KEY_IDENT_BYTES] = '\0';
}
if (path_len >= destsize) {