VivoKey/vsmartcard
7
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases 1 Wiki Activity

fixed short length SM APDUs (especially case 2)

Browse Source
This commit is contained in:
Frank Morgner
2012-10-05 10:38:10 +02:00
parent 80091a6997
commit be19c06e51
1 changed files with 10 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
npa/src/sm.c
View File

@@ -318,8 +318,8 @@ static int sm_encrypt(const struct sm_ctx *ctx, sc_card_t *card,
goto err;
}
} else {
/* in case of T1 always use 3 bytes for length */
le_len = 3;
/* in case of T1 always use 2 bytes for length */
le_len = 2;
r = format_le(apdu->le, sm_capdu + 1, &le, &le_len);
if (r < 0) {
sc_debug(card->ctx, SC_LOG_DEBUG_VERBOSE, "Could not format Le of SM apdu");
@@ -441,7 +441,10 @@ static int sm_encrypt(const struct sm_ctx *ctx, sc_card_t *card,
sm_apdu->datalen = sm_data_len;
sm_apdu->lc = sm_apdu->datalen;
sm_apdu->le = 0;
sm_apdu->cse = SC_APDU_CASE_4;
if (apdu->cse & SC_APDU_EXT)
sm_apdu->cse = SC_APDU_CASE_4_EXT;
else
sm_apdu->cse = SC_APDU_CASE_4_SHORT;
bin_log(card->ctx, SC_LOG_DEBUG_NORMAL, "ASN.1 encoded encrypted APDU data", sm_apdu->data, sm_apdu->datalen);
err:
@@ -467,7 +470,7 @@ static int sm_decrypt(const struct sm_ctx *ctx, sc_card_t *card,
int r;
struct sc_asn1_entry sm_rapdu[4];
struct sc_asn1_entry my_sm_rapdu[4];
u8 sw[2], mac[8], fdata[SC_MAX_APDU_BUFFER_SIZE];
u8 sw[2], mac[8], fdata[SC_MAX_EXT_APDU_BUFFER_SIZE];
size_t sw_len = sizeof sw, mac_len = sizeof mac, fdata_len = sizeof fdata,
buf_len, asn1_len;
const u8 *buf;
@@ -529,7 +532,9 @@ static int sm_decrypt(const struct sm_ctx *ctx, sc_card_t *card,
}
if (apdu->resplen < r || (r && !apdu->resp)) {
sc_debug(card->ctx, SC_LOG_DEBUG_VERBOSE, "Response of SM APDU too long");
sc_debug(card->ctx, SC_LOG_DEBUG_VERBOSE,
"Response of SM APDU %u byte%s too long", r-apdu->resplen,
r-apdu->resplen < 2 ? "" : "s");
r = SC_ERROR_OUT_OF_MEMORY;
goto err;
}