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scd: Fix bBWI value.

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* scd/ccid-driver.c (ccid_transceive_apdu_level): Use bBWI=0 for APDU
level transfer.
(ccid_transceive): Use bBWI=0 or the value returend by WTX for TPDU
level transfer.

--

Backported master commit of:
	858dc9564326e65e6d8771af160d4513aea1e4eb

GnuPG-bug-id: 4654
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
This commit is contained in:
NIIBE Yutaka 2019-07-25 09:15:12 +09:00
parent 8e01676981
commit f8961a576d
1 changed files with 2 additions and 2 deletions
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4
scd/ccid-driver.c
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@ -2844,7 +2844,7 @@ ccid_transceive_apdu_level (ccid_driver_t handle,
size_t apdu_part_len;
size_t msglen;
unsigned char seqno;
int bwi = 4;
int bwi = 0;
unsigned char chain = 0;
if (apdu_len == 0 || apdu_len > sizeof (msg) - 10)
@ -3096,7 +3096,7 @@ ccid_transceive (ccid_driver_t handle,
msg[0] = PC_to_RDR_XfrBlock;
msg[5] = 0; /* slot */
msg[6] = seqno = handle->seqno++;
msg[7] = 4; /* bBWI */
msg[7] = wait_more; /* bBWI */
msg[8] = 0; /* RFU */
msg[9] = 0; /* RFU */
set_msg_len (msg, tpdulen);