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test_onion.c: generate message predictably

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Generate sample encrypted payload based on actual pubkey, not
libsecp256k1's internal representation of the pubkey.
This commit is contained in:
Anthony Towns 2015-10-06 23:49:52 +10:00
parent 9ffac49c6f
commit beafbe1c19
1 changed files with 9 additions and 4 deletions
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13
test/test_onion.c
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@ -596,12 +596,17 @@ static bool parse_onion_pubkey(secp256k1_context *ctx,
return secp256k1_ec_pubkey_parse(ctx, pubkey, tmp, sizeof(tmp));
}
static char *make_message(const secp256k1_pubkey *pubkey)
static char *make_message(secp256k1_context *ctx,
const secp256k1_pubkey *pubkey)
{
char *m;
unsigned char tmp[33];
size_t len;
char hexstr[hex_str_size(20)];
hex_encode(pubkey, 20, hexstr, sizeof(hexstr));
secp256k1_ec_pubkey_serialize(ctx, tmp, &len, pubkey,
SECP256K1_EC_COMPRESSED);
hex_encode(tmp+1, 20, hexstr, sizeof(hexstr));
asprintf(&m, "Message for %s...", hexstr);
return m;
}
@ -643,7 +648,7 @@ int main(int argc, char *argv[])
for (i = 1; i < argc; i++) {
if (!parse_onion_pubkey(ctx, argv[i], &pubkeys[i-1]))
errx(1, "Bad pubkey '%s'", argv[i]);
msgs[i-1] = make_message(&pubkeys[i-1]);
msgs[i-1] = make_message(ctx, &pubkeys[i-1]);
}
if (!create_onion(pubkeys, msgs, argc - 1, &onion))
@ -670,7 +675,7 @@ int main(int argc, char *argv[])
if (!decrypt_onion(&seckey, &onion, &enckey, &pad_iv))
errx(1, "Failed decrypting onion for '%s'", argv[1]);
if (strncmp((char *)myhop(&onion)->msg, make_message(&pubkey),
if (strncmp((char *)myhop(&onion)->msg, make_message(ctx, &pubkey),
sizeof(myhop(&onion)->msg)))
errx(1, "Bad message '%s'", (char *)myhop(&onion)->msg);
if (!peel_onion(&onion, &enckey, &pad_iv))