From 8bdf6ab19df70c16d335ecf82f2c3b2117eeb70e Mon Sep 17 00:00:00 2001 From: Özgür Kesim Date: Wed, 16 Feb 2022 22:01:05 +0100 Subject: [age restriction] progress 14/n - withdraw and deposit Age restriction support for - withdraw is done and tested - deposit is done and tested TODOs: - melt/refresh/reveal - link ------ Added functions - TALER_age_restriction_commit - TALER_age_commitment_derive - TALER_age_commitment_hash - TALER_age_restriction_commitment_free_inside - Hash of age commitment passed around API boundaries Exchangedb adjustments for denominations - all prepared statements re: denominations now handle age_mask - signature parameters adjusted Hash and signature verification of /keys adjusted - Hashes of (normal) denominations and age-restricted denominations are calculated seperately - The hash of the age-restricted ones will then be added to the other hash - The total hash is signed/verified Tests for withdraw with age restriction added - TALER_EXCHANGE_DenomPublickey now carries age_mask - TALER_TESTING_cmd_withdraw_amount* takes age parameter - TALER_TESTING_find_pk takes boolean age_restricted - WithdrawState carries age_commitment and its hash - withdraw_run derives new age commitment, if applicable - Added age parameter to testing (13 as example) Various Fixes and changes - Fixes of post handler for /management/extensions - Fixes for offline tool extensions signing - Slight refactoring of extensions - Age restriction extension simplified - config is now global to extension - added global TEH_age_restriction_enabled and TEH_age_mask in taler-exchange-httpd - helper functions and macros introduced --- src/lib/exchange_api_link.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'src/lib/exchange_api_link.c') diff --git a/src/lib/exchange_api_link.c b/src/lib/exchange_api_link.c index a44ccdce..10ddd471 100644 --- a/src/lib/exchange_api_link.c +++ b/src/lib/exchange_api_link.c @@ -113,6 +113,7 @@ parse_link_coin (const struct TALER_EXCHANGE_LinkHandle *lh, struct TALER_TransferSecretP secret; struct TALER_PlanchetDetail pd; struct TALER_CoinPubHash c_hash; + struct TALER_AgeCommitmentHash h_age_commitment = {0}; // TODO, see below. /* parse reply */ memset (&nonce, @@ -143,6 +144,7 @@ parse_link_coin (const struct TALER_EXCHANGE_LinkHandle *lh, &alg_values, &bks, &lci->coin_priv, + NULL, /* FIXME-oec. struct TALER_AgeCommitmentHash */ &c_hash, &pd)) { @@ -179,6 +181,15 @@ parse_link_coin (const struct TALER_EXCHANGE_LinkHandle *lh, GNUNET_CRYPTO_eddsa_key_get_public (&lh->coin_priv.eddsa_priv, &old_coin_pub.eddsa_pub); + /* + * TODO-oec: Derive the age commitment vector and hash it into + * h_age_commitment. + * Questions: + * - Where do we get the information about the support for age + * restriction of the denomination? + * - Where do we get the information bout the previous coin's age groups? + */ + TALER_coin_ev_hash (&pd.blinded_planchet, &pd.denom_pub_hash, &coin_envelope_hash); @@ -187,6 +198,7 @@ parse_link_coin (const struct TALER_EXCHANGE_LinkHandle *lh, trans_pub, &coin_envelope_hash, &old_coin_pub, + &h_age_commitment, &link_sig)) { GNUNET_break_op (0); -- cgit v1.2.3