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Werner Koch 471b06e91b
scd:p15: Fix decrypt followed by sign problem for D-Trust cards.
* scd/iso7816.c (iso7816_select_mf): New.
* scd/app-p15.c (card_product_t): New.
(struct app_local_s): Add field 'card_product'.
(read_ef_tokeninfo): Detect D-Trust card.
(prepare_verify_pin): Switch to D-Trust AID.
(do_decipher): Restore a SE for D-TRust cards.  Change the padding
indicator to 0x81.

* common/percent.c (percent_data_escape): new.  Taken from master.
--

Using what I learned from a USB trace running the Governikus Signer
Software on Windows this fixes the left over problem with the new
D-Trust card support.

Signed-off-by: Werner Koch <wk@gnupg.org>

Backported from master.  This required to add the percent_data_escape
function we introduced in master on 2018-07-02:

    commit 58baf40af641f8cbf597e508a292e85ae94688f1
    common: New function percent_data_escape.

Signed-off-by: Werner Koch <wk@gnupg.org>
2020-04-15 15:31:56 +02:00
..
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Common functionality used by all modules of GnuPG.