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OpenPGP: parse "extended length info" DO 7f66 on init

This commit is contained in:
Peter Marschall 2018-06-10 14:03:06 +02:00 committed by Frank Morgner
parent f73005791c
commit 3a59b0a182
1 changed files with 10 additions and 1 deletions
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11
src/libopensc/card-openpgp.c
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@ -662,7 +662,6 @@ pgp_get_card_features(sc_card_t *card)
if ((priv->sm_algo == SM_ALGO_NONE) && (priv->ext_caps & EXT_CAP_SM))
priv->sm_algo = SM_ALGO_UNKNOWN;
}
/* TODO read Extended length information from DO 7F66 in OpenPGP 3.0 and later */
}
}
@ -693,6 +692,16 @@ pgp_get_card_features(sc_card_t *card)
}
}
}
if (priv->bcd_version >= OPENPGP_CARD_3_0) {
/* v3.0+: get length info from "extended length information" DO */
if ((pgp_get_blob(card, blob6e, 0x7f66, &blob) >= 0) &&
(blob->data != NULL) && (blob->len >= 8)) {
/* kludge: treat as SIMPLE DO and use appropriate offsets */
card->max_send_size = bebytes2ushort(blob->data + 2);
card->max_recv_size = bebytes2ushort(blob->data + 6);
}
}
}
return SC_SUCCESS;