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added workaround to avoid potentially conflicting types of mse:set at's

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git-svn-id: https://vsmartcard.svn.sourceforge.net/svnroot/vsmartcard@560 96b47cad-a561-4643-ad3b-153ac7d7599c
This commit is contained in:
frankmorgner
2011-10-18 09:03:13 +00:00
parent 061770da81
commit fa767abec2
1 changed files with 30 additions and 56 deletions
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86
npa/src/npa.c
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@@ -39,15 +39,6 @@
#define ASN1_APP_IMP_OPT(stname, field, type, tag) ASN1_EX_TYPE(ASN1_TFLG_IMPTAG|ASN1_TFLG_APPLICATION|ASN1_TFLG_OPTIONAL, tag, stname, field, type)
#define ASN1_APP_IMP(stname, field, type, tag) ASN1_EX_TYPE(ASN1_TFLG_IMPTAG|ASN1_TFLG_APPLICATION, tag, stname, field, type)
typedef CVC_DISCRETIONARY_DATA_TEMPLATES APDU_DISCRETIONARY_DATA_TEMPLATES;
DECLARE_ASN1_FUNCTIONS(APDU_DISCRETIONARY_DATA_TEMPLATES)
ASN1_ITEM_TEMPLATE(APDU_DISCRETIONARY_DATA_TEMPLATES) =
ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_IMPTAG|ASN1_TFLG_APPLICATION, 0x7,
APDU_DISCRETIONARY_DATA_TEMPLATES,
CVC_DISCRETIONARY_DATA_TEMPLATES)
ASN1_ITEM_TEMPLATE_END(APDU_DISCRETIONARY_DATA_TEMPLATES)
IMPLEMENT_ASN1_FUNCTIONS(APDU_DISCRETIONARY_DATA_TEMPLATES)
/*
* MSE:Set AT
*/
@@ -57,7 +48,7 @@ typedef struct npa_mse_set_at_cd_st {
ASN1_OCTET_STRING *key_reference1;
ASN1_OCTET_STRING *key_reference2;
ASN1_OCTET_STRING *eph_pub_key;
APDU_DISCRETIONARY_DATA_TEMPLATES *auxiliary_data;
CVC_DISCRETIONARY_DATA_TEMPLATES *auxiliary_data;
CVC_CHAT *chat;
} NPA_MSE_SET_AT_C;
ASN1_SEQUENCE(NPA_MSE_SET_AT_C) = {
@@ -75,7 +66,7 @@ ASN1_SEQUENCE(NPA_MSE_SET_AT_C) = {
ASN1_IMP_OPT(NPA_MSE_SET_AT_C, eph_pub_key, ASN1_OCTET_STRING, 0x11),
/* 0x67
* Auxiliary authenticated data */
ASN1_OPT(NPA_MSE_SET_AT_C, auxiliary_data, APDU_DISCRETIONARY_DATA_TEMPLATES),
ASN1_APP_IMP_OPT(NPA_MSE_SET_AT_C, auxiliary_data, CVC_DISCRETIONARY_DATA_TEMPLATES, 7),
/*ASN1_APP_IMP_OPT(NPA_MSE_SET_AT_C, auxiliary_data, ASN1_OCTET_STRING, 7),*/
/* Certificate Holder Authorization Template */
ASN1_OPT(NPA_MSE_SET_AT_C, chat, CVC_CHAT),
@@ -83,44 +74,6 @@ ASN1_SEQUENCE(NPA_MSE_SET_AT_C) = {
DECLARE_ASN1_FUNCTIONS(NPA_MSE_SET_AT_C)
IMPLEMENT_ASN1_FUNCTIONS(NPA_MSE_SET_AT_C)
/* Due to limitations of OpenSSL it is not possible to *encode* an optional
* item template (such as APDU_DISCRETIONARY_DATA_TEMPLATES). So we need this
* second type of mse:set at with non-optional discretionary data templates for
* ta.
*
* See also openssl/crypto/asn1/tasn_dec.c:183
*/
typedef struct npa_ta_mse_set_at_cd_st {
ASN1_OBJECT *cryptographic_mechanism_reference;
ASN1_OCTET_STRING *key_reference1;
ASN1_OCTET_STRING *key_reference2;
ASN1_OCTET_STRING *eph_pub_key;
APDU_DISCRETIONARY_DATA_TEMPLATES *auxiliary_data;
CVC_CHAT *chat;
} NPA_TA_MSE_SET_AT_C;
ASN1_SEQUENCE(NPA_TA_MSE_SET_AT_C) = {
/* 0x80
* Cryptographic mechanism reference */
ASN1_IMP_OPT(NPA_TA_MSE_SET_AT_C, cryptographic_mechanism_reference, ASN1_OBJECT, 0),
/* 0x83
* Reference of a public key / secret key */
ASN1_IMP_OPT(NPA_TA_MSE_SET_AT_C, key_reference1, ASN1_OCTET_STRING, 3),
/* 0x84
* Reference of a private key / Reference for computing a session key */
ASN1_IMP_OPT(NPA_TA_MSE_SET_AT_C, key_reference2, ASN1_OCTET_STRING, 4),
/* 0x91
* Ephemeral Public Key */
ASN1_IMP_OPT(NPA_TA_MSE_SET_AT_C, eph_pub_key, ASN1_OCTET_STRING, 0x11),
/* 0x67
* Auxiliary authenticated data */
ASN1_SIMPLE(NPA_TA_MSE_SET_AT_C, auxiliary_data, APDU_DISCRETIONARY_DATA_TEMPLATES),
/*ASN1_APP_IMP_OPT(NPA_MSE_SET_AT_C, auxiliary_data, ASN1_OCTET_STRING, 7),*/
/* Certificate Holder Authorization Template */
ASN1_OPT(NPA_TA_MSE_SET_AT_C, chat, CVC_CHAT),
} ASN1_SEQUENCE_END(NPA_TA_MSE_SET_AT_C)
DECLARE_ASN1_FUNCTIONS(NPA_TA_MSE_SET_AT_C)
IMPLEMENT_ASN1_FUNCTIONS(NPA_TA_MSE_SET_AT_C)
/*
* General Authenticate
@@ -1628,10 +1581,11 @@ npa_sm_pre_transmit(sc_card_t *card, const struct sm_ctx *ctx,
int r;
CVC_CERT *cvc_cert = NULL;
unsigned char *cert = NULL;
int len;
int len, tag, class;
long int llen;
BUF_MEM *signature = NULL;
unsigned char *sequence = NULL;
NPA_TA_MSE_SET_AT_C *msesetat = NULL;
unsigned char *sequence = NULL, *templates = NULL;
NPA_MSE_SET_AT_C *msesetat = NULL;
const unsigned char *p;
if (!card || !ctx || !apdu || !ctx->priv_data) {
@@ -1742,7 +1696,7 @@ npa_sm_pre_transmit(sc_card_t *card, const struct sm_ctx *ctx,
len = add_tag(&sequence, 1, V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL, apdu->data, apdu->datalen);
p = sequence;
if (len < 0 || !d2i_NPA_TA_MSE_SET_AT_C(&msesetat, &p, len)) {
if (len < 0 || !d2i_NPA_MSE_SET_AT_C(&msesetat, &p, len)) {
sc_debug(card->ctx, SC_LOG_DEBUG_VERBOSE, "Could not parse MSE:Set AT.");
ssl_error(card->ctx);
r = SC_ERROR_INTERNAL;
@@ -1757,9 +1711,27 @@ npa_sm_pre_transmit(sc_card_t *card, const struct sm_ctx *ctx,
r = SC_ERROR_OUT_OF_MEMORY;
goto err;
}
eacsmctx->auxiliary_data->length =
i2d_APDU_DISCRETIONARY_DATA_TEMPLATES(msesetat->auxiliary_data,
(unsigned char **) &eacsmctx->auxiliary_data->data);
/* Note that we can not define CVC_DISCRETIONARY_DATA_TEMPLATES as
* item template with the correct tag. Due to limitations of
* OpenSSL it is not possible to *encode* an optional item template
* (such as APDU_DISCRETIONARY_DATA_TEMPLATES) in an other item
* template (such as NPA_MSE_SET_AT_C). So what we have to do here
* is manually adding the correct tag to the saved
* CVC_DISCRETIONARY_DATA_TEMPLATES.
* See also openssl/crypto/asn1/tasn_dec.c:183
*/
len = i2d_CVC_DISCRETIONARY_DATA_TEMPLATES(msesetat->auxiliary_data, &templates);
p = templates;
if (len < 0 ||
(0x80 & ASN1_get_object(&p, &llen, &tag, &class, len))) {
sc_debug(card->ctx, SC_LOG_DEBUG_VERBOSE, "Error encoding auxiliary data.");
ssl_error(card->ctx);
r = SC_ERROR_INTERNAL;
goto err;
}
eacsmctx->auxiliary_data->length = add_tag(
(unsigned char **) &eacsmctx->auxiliary_data->data, 1,
7, V_ASN1_APPLICATION, p, llen);
if ((int) eacsmctx->auxiliary_data->length < 0) {
r = SC_ERROR_OUT_OF_MEMORY;
goto err;
@@ -1822,6 +1794,8 @@ err:
OPENSSL_free(cert);
if (sequence)
free(sequence);
if (templates)
OPENSSL_free(templates);
SC_FUNC_RETURN(card->ctx, SC_LOG_DEBUG_NORMAL, r);
}