diff options
| author | Werner Koch <[email protected]> | 2021-04-22 09:04:30 +0000 |
|---|---|---|
| committer | Werner Koch <[email protected]> | 2021-04-22 09:04:30 +0000 |
| commit | 9e24f2a45ce8038f662ec1a9893669e1d5604ec7 (patch) | |
| tree | f33b172da0e0bd4ee39d81ae7437e71f58c77663 /scd/iso7816.c | |
| parent | tests: Make sure that the build keyboxd is used. (diff) | |
| download | gnupg-9e24f2a45ce8038f662ec1a9893669e1d5604ec7.tar.gz gnupg-9e24f2a45ce8038f662ec1a9893669e1d5604ec7.zip | |
scd: Fix PSO_CSV for 512 bit curves
* scd/iso7816.c (iso7816_pso_csv): Use BER-TLV instead of SIMPLE-TLV
Signed-off-by: Werner Koch <[email protected]>
Diffstat (limited to 'scd/iso7816.c')
| -rw-r--r-- | scd/iso7816.c | 26 |
1 files changed, 20 insertions, 6 deletions
diff --git a/scd/iso7816.c b/scd/iso7816.c index e8ee58db1..30feb0707 100644 --- a/scd/iso7816.c +++ b/scd/iso7816.c @@ -769,6 +769,7 @@ iso7816_pso_csv (int slot, int extended_mode, { int sw; unsigned char *buf; + unsigned int nbuf; if (!data || !datalen || !result || !resultlen) return gpg_error (GPG_ERR_INV_VALUE); @@ -780,16 +781,29 @@ iso7816_pso_csv (int slot, int extended_mode, else if (le >= 0 && le < 256) le = 256; - /* Data needds to be TLV format. */ - buf = xtrymalloc (datalen + 2); + /* Data needs to be in BER-TLV format. */ + buf = xtrymalloc (datalen + 4); if (!buf) return gpg_error_from_syserror (); - buf[0] = 0x9c; - buf[1] = datalen; - memcpy (buf+2, data, datalen); + nbuf = 0; + buf[nbuf++] = 0x9c; + if (datalen < 128) + buf[nbuf++] = datalen; + else if (datalen < 256) + { + buf[nbuf++] = 0x81; + buf[nbuf++] = datalen; + } + else + { + buf[nbuf++] = 0x82; + buf[nbuf++] = datalen << 8; + buf[nbuf++] = datalen; + } + memcpy (buf+nbuf, data, datalen); sw = apdu_send_le (slot, extended_mode, 0x00, CMD_PSO, 0x80, 0xa6, - datalen+2, (const char *)buf, le, + datalen+nbuf, (const char *)buf, le, result, resultlen); xfree (buf); if (sw != SW_SUCCESS) |