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scd:p15: Support ECDSA and ECDH for CardOS.
* scd/iso7816.c (iso7816_pso_csv): New. * scd/app-help.c (app_help_pubkey_from_cert): Uncompress a point if needed. * scd/app-p15.c (CARD_PRODUCT_RSCS): New. (struct prkdf_object_s): Add fields is_ecc, token_label, and tokenflags. (do_deinit): Free new fields. (cardproduct2str): New. (read_ef_prkdf): Set new is_ecc flag. (read_ef_tokeninfo): Store some data and move Tokeninfo diags to ... (read_p15_info): here. set the product info here after all data has been gathered. (send_keypairinfo): Chnage the way the gpgusage flags are used. (make_pin_prompt): If the token has a label and the current cert has no CN, show the label as holder info. (do_sign): Support ECDSA. Take care of the gpgusage flags. (do_decipher): Support ECDH. Take care of the gpgusage flags. -- This has been tested with Trusted Object Manager generated cards by Rohde & Schwarz Cybersecurity. Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch
parent
f129b0e977
commit
a494b29af9
@ -76,6 +76,7 @@ app_help_get_keygrip_string_pk (const void *pk, size_t pklen, char *hexkeygrip,
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err = gcry_sexp_sscan (&s_pkey, NULL, pk, pklen);
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if (err)
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return err; /* Can't parse that S-expression. */
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if (!gcry_pk_get_keygrip (s_pkey, array))
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{
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gcry_sexp_release (s_pkey);
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@ -143,12 +144,14 @@ app_help_pubkey_from_cert (const void *cert, size_t certlen,
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{
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gpg_error_t err;
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ksba_cert_t kc;
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unsigned char *pk;
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size_t pklen;
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unsigned char *pk, *fixed_pk;
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size_t pklen, fixed_pklen;
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*r_pk = NULL;
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*r_pklen = 0;
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pk = NULL; /*(avoid cc warning)*/
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err = ksba_cert_new (&kc);
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if (err)
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return err;
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@ -165,6 +168,16 @@ app_help_pubkey_from_cert (const void *cert, size_t certlen,
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}
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pklen = gcry_sexp_canon_len (pk, 0, NULL, &err);
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err = uncompress_ecc_q_in_canon_sexp (pk, pklen, &fixed_pk, &fixed_pklen);
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if (err)
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goto leave;
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if (fixed_pk)
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{
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ksba_free (pk); pk = NULL;
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pk = fixed_pk;
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pklen = fixed_pklen;
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}
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leave:
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if (!err)
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{
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413
scd/app-p15.c
413
scd/app-p15.c
@ -84,6 +84,7 @@ card_type_t;
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typedef enum
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{
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CARD_PRODUCT_UNKNOWN,
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CARD_PRODUCT_RSCS, /* Rohde&Schwarz Cybersecurity */
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CARD_PRODUCT_DTRUST /* D-Trust GmbH (bundesdruckerei.de) */
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}
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card_product_t;
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@ -259,6 +260,11 @@ struct prkdf_object_s
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* verified. */
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unsigned int pin_verified:1;
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/* PKCS#15 info whether this is an EC key. Default is RSA. Note
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* that there is also a KEYALGO field which is derived from the
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* publick key via Libgcrypt. */
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unsigned int is_ecc:1;
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/* The key's usage flags. */
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keyusage_flags_t usageflags;
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@ -283,7 +289,7 @@ struct prkdf_object_s
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char keygrip[2*KEYGRIP_LEN+1];
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/* The Gcrypt algo identifier for the key. It is valid if the
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* keygrip is also valid. */
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* keygrip is also valid. See also is_ecc above. */
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int keyalgo;
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/* The length of the key in bits (e.g. for RSA the length of the
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@ -443,9 +449,16 @@ struct app_local_s
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unsigned char *serialno;
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size_t serialnolen;
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/* The manufacturerID from the TokenInfo EF. Malloced. */
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/* The manufacturerID from the TokenInfo EF. Malloced or NULL. */
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char *manufacturer_id;
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/* The label from the TokenInfo EF. Malloced or NULL. */
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char *token_label;
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/* The tokenflags from the TokenInfo EF. Malloced or NULL. */
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unsigned char *tokenflags;
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unsigned int tokenflagslen;
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/* Information on all certificates. */
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cdf_object_t certificate_info;
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/* Information on all trusted certificates. */
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@ -491,6 +504,18 @@ cardtype2str (card_type_t cardtype)
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return "";
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}
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static const char *
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cardproduct2str (card_product_t cardproduct)
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{
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switch (cardproduct)
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{
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case CARD_PRODUCT_UNKNOWN: return "";
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case CARD_PRODUCT_RSCS: return "RSCS";
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case CARD_PRODUCT_DTRUST: return "D-Trust";
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}
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return "";
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}
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/* Release the CDF object A */
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static void
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release_cdflist (cdf_object_t a)
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@ -570,6 +595,8 @@ do_deinit (app_t app)
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release_prkdflist (app->app_local->private_key_info);
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release_aodflist (app->app_local->auth_object_info);
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xfree (app->app_local->manufacturer_id);
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xfree (app->app_local->token_label);
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xfree (app->app_local->tokenflags);
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xfree (app->app_local->serialno);
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xfree (app->app_local);
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app->app_local = NULL;
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@ -1570,14 +1597,15 @@ parse_common_key_attr (unsigned char const **buffer, size_t *size,
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* }
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*
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* Sample part for EC objects:
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* [1] { -- keyAttributes
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* SEQUENCE {
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* SEQUENCE {
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* OCTET STRING 50 72 4B 03
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* [1] { -- keyAttributes
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* [1] { -- privateECkeyAttributes
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* SEQUENCE { -- objectValue
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* SEQUENCE { --path
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* OCTET STRING 50 72 4B 03
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* }
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* INTEGER 33 -- Not in PKCS#15v1.1, need to buy 7816-15?
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* }
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* INTEGER 33 -- Not in PKCS#15v1.1, need to buy 6718-15?
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* }
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* }
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*/
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static gpg_error_t
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read_ef_prkdf (app_t app, unsigned short fid, prkdf_object_t *result)
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@ -1621,6 +1649,7 @@ read_ef_prkdf (app_t app, unsigned short fid, prkdf_object_t *result)
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keyaccess_flags_t accessflags;
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unsigned long key_reference = 0;
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int key_reference_valid = 0;
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int is_ecc = 0;
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where = __LINE__;
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err = parse_ber_header (&p, &n, &class, &tag, &constructed,
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@ -1635,7 +1664,7 @@ read_ef_prkdf (app_t app, unsigned short fid, prkdf_object_t *result)
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{
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switch (tag)
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{
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case 0: break; /* PrivateECKeyAttributes */
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case 0: is_ecc = 1; break; /* PrivateECKeyAttributes */
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case 1: errstr = "DH key objects are not supported"; break;
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case 2: errstr = "DSA key objects are not supported"; break;
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case 3: errstr = "KEA key objects are not supported"; break;
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@ -1763,6 +1792,8 @@ read_ef_prkdf (app_t app, unsigned short fid, prkdf_object_t *result)
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err = gpg_error_from_syserror ();
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goto leave;
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}
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prkdf->is_ecc = is_ecc;
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prkdf->objidlen = objidlen;
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prkdf->objid = objid;
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objid = NULL;
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@ -3276,8 +3307,6 @@ read_ef_tokeninfo (app_t app)
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goto leave;
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}
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if (opt.verbose)
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log_info ("p15: TokenInfo:\n");
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/* serialNumber. */
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err = parse_ber_header (&p, &n, &class, &tag, &constructed,
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&ndef, &objlen, &hdrlen);
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@ -3295,12 +3324,6 @@ read_ef_tokeninfo (app_t app)
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}
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memcpy (app->app_local->serialno, p, objlen);
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app->app_local->serialnolen = objlen;
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if (opt.verbose)
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{
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/* (We use a separate log_info to avoid the "DBG:" prefix.) */
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log_info ("p15: serialNumber .: ");
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log_printhex (p, objlen, "");
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}
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p += objlen;
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n -= objlen;
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@ -3313,8 +3336,6 @@ read_ef_tokeninfo (app_t app)
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goto leave;
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if (class == CLASS_UNIVERSAL && tag == TAG_UTF8_STRING)
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{
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if (opt.verbose)
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log_info ("p15: manufacturerID: %.*s\n", (int)objlen, p);
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app->app_local->manufacturer_id = percent_data_escape (0, NULL,
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p, objlen);
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p += objlen;
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@ -3329,11 +3350,7 @@ read_ef_tokeninfo (app_t app)
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}
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if (class == CLASS_CONTEXT && tag == 0)
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{
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if (opt.verbose)
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log_info ("p15: label ........: %.*s\n", (int)objlen, p);
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if (objlen > 15 && !memcmp (p, "D-TRUST Card V3", 15)
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&& app->app_local->card_type == CARD_TYPE_CARDOS_50)
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app->app_local->card_product = CARD_PRODUCT_DTRUST;
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app->app_local->token_label = percent_data_escape (0, NULL, p, objlen);
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p += objlen;
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n -= objlen;
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@ -3348,38 +3365,18 @@ read_ef_tokeninfo (app_t app)
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/* The next is the mandatory tokenflags object. */
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if (class == CLASS_UNIVERSAL && tag == TAG_BIT_STRING)
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{
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if (opt.verbose)
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app->app_local->tokenflagslen = objlen;
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app->app_local->tokenflags = xtrymalloc (objlen);
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if (!app->app_local->tokenflags)
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{
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log_info ("p15: tokenflags ...:");
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print_tokeninfo_tokenflags (p, objlen);
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log_printf ("\n");
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err = gpg_error_from_syserror ();
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goto leave;
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}
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memcpy (app->app_local->tokenflags, p, objlen);
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p += objlen;
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n -= objlen;
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}
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if (opt.verbose)
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{
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unsigned char *atr;
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size_t atrlen;
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const char *cardstr;
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log_info ("p15: atr ..........: ");
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atr = apdu_get_atr (app_get_slot (app), &atrlen);
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if (!atr)
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log_printf ("[error]\n");
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else
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{
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log_printhex (atr, atrlen, "");
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xfree (atr);
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}
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cardstr = cardtype2str (app->app_local->card_type);
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log_info ("p15: cardtype .....: %d.%d%s%s%s\n",
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app->app_local->card_type,
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app->app_local->card_product,
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*cardstr? " (":"", cardstr, *cardstr? ")":"");
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}
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leave:
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xfree (buffer);
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@ -3395,6 +3392,7 @@ read_p15_info (app_t app)
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{
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gpg_error_t err;
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prkdf_object_t prkdf;
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unsigned int flag;
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if (!read_ef_tokeninfo (app))
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{
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@ -3560,10 +3558,45 @@ read_p15_info (app_t app)
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xfree (extusage);
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}
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/* See whether we can figure out something about the card. */
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if (!app->app_local->card_product
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&& app->app_local->manufacturer_id
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&& !strcmp (app->app_local->manufacturer_id, "www.atos.net/cardos")
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&& IS_CARDOS_5 (app))
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{
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/* This is a modern CARDOS card. */
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flag = 0;
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for (prkdf = app->app_local->private_key_info; prkdf; prkdf = prkdf->next)
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{
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if (prkdf->label && !strcmp (prkdf->label, "IdentityKey")
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&& prkdf->key_reference_valid && prkdf->key_reference == 1
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&& !prkdf->authid)
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flag |= 1;
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else if (prkdf->label && !strcmp (prkdf->label, "TransportKey")
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&& prkdf->key_reference_valid && prkdf->key_reference==2
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&& prkdf->authid)
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flag |= 2;
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}
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if (flag == 3)
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app->app_local->card_product = CARD_PRODUCT_RSCS;
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}
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if (!app->app_local->card_product
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&& app->app_local->token_label
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&& !strcmp (app->app_local->token_label, "D-TRUST Card V3")
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&& app->app_local->card_type == CARD_TYPE_CARDOS_50)
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{
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app->app_local->card_product = CARD_PRODUCT_DTRUST;
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}
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/* Now print the info about the PrKDF. */
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if (opt.verbose)
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{
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int i;
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unsigned char *atr;
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size_t atrlen;
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const char *cardstr;
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for (prkdf = app->app_local->private_key_info; prkdf; prkdf = prkdf->next)
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{
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@ -3585,6 +3618,7 @@ read_p15_info (app_t app)
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}
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if (prkdf->key_reference_valid)
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log_printf (" keyref=0x%02lX", prkdf->key_reference);
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log_printf (" type=%s", prkdf->is_ecc? "ecc":"rsa");
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if (prkdf->accessflags.any)
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dump_keyaccess_flags (prkdf->accessflags);
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dump_keyusage_flags (prkdf->usageflags);
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@ -3602,6 +3636,55 @@ read_p15_info (app_t app)
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log_printf ("\n");
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}
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log_info ("p15: TokenInfo:\n");
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if (app->app_local->serialno)
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{
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log_info ("p15: serialNumber .: ");
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log_printhex (app->app_local->serialno, app->app_local->serialnolen,
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"");
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}
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else if (APP_CARD(app)->serialno)
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{
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log_info ("p15: serialNumber .: ");
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log_printhex (APP_CARD(app)->serialno, APP_CARD(app)->serialnolen,
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"");
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}
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if (app->app_local->manufacturer_id)
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log_info ("p15: manufacturerID: %s\n",
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app->app_local->manufacturer_id);
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if (app->app_local->card_product)
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{
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cardstr = cardproduct2str (app->app_local->card_product);
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log_info ("p15: product ......: %d%s%s%s\n",
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app->app_local->card_product,
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*cardstr? " (":"", cardstr, *cardstr? ")":"");
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}
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if (app->app_local->token_label)
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log_info ("p15: label ........: %s\n", app->app_local->token_label);
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if (app->app_local->tokenflags)
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{
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log_info ("p15: tokenflags ...:");
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print_tokeninfo_tokenflags (app->app_local->tokenflags,
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app->app_local->tokenflagslen);
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log_printf ("\n");
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}
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log_info ("p15: atr ..........: ");
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atr = apdu_get_atr (app_get_slot (app), &atrlen);
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if (!atr)
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log_printf ("[error]\n");
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else
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{
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log_printhex (atr, atrlen, "");
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xfree (atr);
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}
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cardstr = cardtype2str (app->app_local->card_type);
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log_info ("p15: cardtype .....: %d%s%s%s\n",
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app->app_local->card_type,
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*cardstr? " (":"", cardstr, *cardstr? ")":"");
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}
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return err;
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@ -3702,12 +3785,14 @@ keygrip_from_prkdf (app_t app, prkdf_object_t prkdf)
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xfree (der);
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if (!err)
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err = app_help_get_keygrip_string (cert, prkdf->keygrip, &s_pkey, NULL);
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if (!err)
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if (!err && !prkdf->gpgusage.any)
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{
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/* Try to get the CN and the SerialNumber from the certificate;
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* we use a very simple approach here which should work in many
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* cases. Eventually we should add a rfc-2253 parser into
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* libksba to make it easier to parse such a string.
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* We don't do this if this is marked as gpg key and thus
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* has only a dummy certificate.
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*
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* First example string:
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* "CN=Otto Schily,O=Miniluv,C=DE"
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@ -3834,24 +3919,38 @@ send_keypairinfo (app_t app, ctrl_t ctrl, prkdf_object_t prkdf)
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char usage[5];
|
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size_t usagelen = 0;
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if ((prkdf->usageflags.sign
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|| prkdf->usageflags.sign_recover
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|| prkdf->usageflags.non_repudiation)
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&& (!prkdf->extusage.valid
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|| prkdf->extusage.sign))
|
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usage[usagelen++] = 's';
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if ((prkdf->usageflags.sign
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|| prkdf->usageflags.sign_recover)
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&& (!prkdf->extusage.valid || prkdf->extusage.sign))
|
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usage[usagelen++] = 'c';
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if ((prkdf->usageflags.decrypt
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|| prkdf->usageflags.unwrap)
|
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&& (!prkdf->extusage.valid || prkdf->extusage.encr))
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usage[usagelen++] = 'e';
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if ((prkdf->usageflags.sign
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|| prkdf->usageflags.sign_recover)
|
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&& (!prkdf->extusage.valid || prkdf->extusage.auth))
|
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usage[usagelen++] = 'a';
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if (prkdf->gpgusage.any)
|
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{
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if (prkdf->gpgusage.sign)
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usage[usagelen++] = 's';
|
||||
if (prkdf->gpgusage.cert)
|
||||
usage[usagelen++] = 'c';
|
||||
if (prkdf->gpgusage.encr)
|
||||
usage[usagelen++] = 'e';
|
||||
if (prkdf->gpgusage.auth)
|
||||
usage[usagelen++] = 'a';
|
||||
}
|
||||
else
|
||||
{
|
||||
if ((prkdf->usageflags.sign
|
||||
|| prkdf->usageflags.sign_recover
|
||||
|| prkdf->usageflags.non_repudiation)
|
||||
&& (!prkdf->extusage.valid
|
||||
|| prkdf->extusage.sign))
|
||||
usage[usagelen++] = 's';
|
||||
if ((prkdf->usageflags.sign
|
||||
|| prkdf->usageflags.sign_recover)
|
||||
&& (!prkdf->extusage.valid || prkdf->extusage.sign))
|
||||
usage[usagelen++] = 'c';
|
||||
if ((prkdf->usageflags.decrypt
|
||||
|| prkdf->usageflags.unwrap)
|
||||
&& (!prkdf->extusage.valid || prkdf->extusage.encr))
|
||||
usage[usagelen++] = 'e';
|
||||
if ((prkdf->usageflags.sign
|
||||
|| prkdf->usageflags.sign_recover)
|
||||
&& (!prkdf->extusage.valid || prkdf->extusage.auth))
|
||||
usage[usagelen++] = 'a';
|
||||
}
|
||||
|
||||
log_assert (strlen (prkdf->keygrip) == 40);
|
||||
send_status_info (ctrl, "KEYPAIRINFO",
|
||||
@ -4506,9 +4605,17 @@ make_pin_prompt (app_t app, int remaining, const char *firstline,
|
||||
prkdf_object_t prkdf)
|
||||
{
|
||||
char *serial, *tmpbuf, *result;
|
||||
const char *holder;
|
||||
|
||||
serial = get_dispserialno (app, prkdf);
|
||||
|
||||
if (prkdf && prkdf->common_name)
|
||||
holder = prkdf->common_name;
|
||||
else if (app->app_local->token_label)
|
||||
holder = app->app_local->token_label;
|
||||
else
|
||||
holder = "";
|
||||
|
||||
/* TRANSLATORS: Put a \x1f right before a colon. This can be
|
||||
* used by pinentry to nicely align the names and values. Keep
|
||||
* the %s at the start and end of the string. */
|
||||
@ -4518,7 +4625,7 @@ make_pin_prompt (app_t app, int remaining, const char *firstline,
|
||||
"%s"),
|
||||
"\x1e",
|
||||
serial,
|
||||
prkdf && prkdf->common_name? prkdf->common_name: "",
|
||||
holder,
|
||||
"");
|
||||
xfree (serial);
|
||||
if (!result)
|
||||
@ -4804,23 +4911,23 @@ do_sign (app_t app, ctrl_t ctrl, const char *keyidstr, int hashalgo,
|
||||
int mse_done = 0; /* Set to true if the MSE has been done. */
|
||||
unsigned int hashlen; /* Length of the hash. */
|
||||
unsigned int datalen; /* Length of the data to sign (prefix+hash). */
|
||||
unsigned char *dataptr;
|
||||
const unsigned char *dataptr;
|
||||
int exmode, le_value;
|
||||
|
||||
(void)ctrl;
|
||||
|
||||
if (!keyidstr || !*keyidstr)
|
||||
return gpg_error (GPG_ERR_INV_VALUE);
|
||||
if (indatalen != 20 && indatalen != 16
|
||||
&& indatalen != 35 && indatalen != 36
|
||||
&& indatalen != (32+19))
|
||||
return gpg_error (GPG_ERR_INV_VALUE);
|
||||
|
||||
err = prkdf_object_from_keyidstr (app, keyidstr, &prkdf);
|
||||
if (err)
|
||||
return err;
|
||||
if (!(prkdf->usageflags.sign || prkdf->usageflags.sign_recover
|
||||
||prkdf->usageflags.non_repudiation))
|
||||
if (!(prkdf->usageflags.sign
|
||||
|| prkdf->usageflags.sign_recover
|
||||
|| prkdf->usageflags.non_repudiation
|
||||
|| prkdf->gpgusage.cert
|
||||
|| prkdf->gpgusage.sign
|
||||
|| prkdf->gpgusage.auth ))
|
||||
{
|
||||
log_error ("p15: key %s may not be used for signing\n", keyidstr);
|
||||
return gpg_error (GPG_ERR_WRONG_KEY_USAGE);
|
||||
@ -4851,6 +4958,59 @@ do_sign (app_t app, ctrl_t ctrl, const char *keyidstr, int hashalgo,
|
||||
return err;
|
||||
}
|
||||
|
||||
/* We handle ECC separately from RSA so that we do not need to touch
|
||||
* working code. In particular we prepare the input data before the
|
||||
* verify and a possible MSE. */
|
||||
if (prkdf->is_ecc)
|
||||
{
|
||||
unsigned int digestlen;
|
||||
unsigned char oidbuf[64];
|
||||
size_t oidbuflen;
|
||||
|
||||
digestlen = gcry_md_get_algo_dlen (hashalgo);
|
||||
if (digestlen != 32 && digestlen != 48 && digestlen != 64)
|
||||
{
|
||||
log_error ("p15: ECC signing not possible: dlen=%u\n", digestlen);
|
||||
return gpg_error (GPG_ERR_DIGEST_ALGO);
|
||||
}
|
||||
|
||||
if (indatalen == digestlen)
|
||||
; /* Already prepared. */
|
||||
else if (indatalen > digestlen)
|
||||
{
|
||||
/* Assume a PKCS#1 prefix and remove it. */
|
||||
oidbuflen = sizeof oidbuf;
|
||||
err = gcry_md_get_asnoid (hashalgo, &oidbuf, &oidbuflen);
|
||||
if (err)
|
||||
{
|
||||
log_debug ("p15: no OID for hash algo %d\n", hashalgo);
|
||||
return gpg_error (GPG_ERR_INTERNAL);
|
||||
}
|
||||
if (indatalen != oidbuflen + digestlen
|
||||
|| memcmp (indata, oidbuf, oidbuflen))
|
||||
{
|
||||
log_error ("p15: input data too long for ECC: len=%zu\n",
|
||||
indatalen);
|
||||
return gpg_error (GPG_ERR_INV_VALUE);
|
||||
}
|
||||
indata = (const char*)indata + oidbuflen;
|
||||
indatalen -= oidbuflen;
|
||||
}
|
||||
else
|
||||
{
|
||||
log_error ("p15: input data too short for ECC: len=%zu\n",
|
||||
indatalen);
|
||||
return gpg_error (GPG_ERR_INV_VALUE);
|
||||
}
|
||||
}
|
||||
else /* Check for RSA. FIXME: We should rework the RSA part. */
|
||||
{
|
||||
if (indatalen != 20 && indatalen != 16
|
||||
&& indatalen != 35 && indatalen != 36
|
||||
&& indatalen != (32+19))
|
||||
return gpg_error (GPG_ERR_INV_VALUE);
|
||||
}
|
||||
|
||||
/* Prepare PIN verification. This is split so that we can do
|
||||
* MSE operation for some task after having selected the key file but
|
||||
* before sending the verify APDU. */
|
||||
@ -4894,9 +5054,13 @@ do_sign (app_t app, ctrl_t ctrl, const char *keyidstr, int hashalgo,
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
|
||||
/* Prepare the DER object from INDATA. */
|
||||
if (indatalen == 36)
|
||||
/* Prepare the input data from INDATA. */
|
||||
if (prkdf->is_ecc)
|
||||
{
|
||||
/* Already checked. */
|
||||
datalen = indatalen;
|
||||
}
|
||||
else if (indatalen == 36)
|
||||
{
|
||||
/* No ASN.1 container used. */
|
||||
if (hashalgo != MD_USER_TLS_MD5SHA1)
|
||||
@ -4993,12 +5157,19 @@ do_sign (app_t app, ctrl_t ctrl, const char *keyidstr, int hashalgo,
|
||||
return err;
|
||||
}
|
||||
|
||||
|
||||
dataptr = data;
|
||||
if (no_data_padding)
|
||||
if (prkdf->is_ecc)
|
||||
{
|
||||
dataptr += datalen - hashlen;
|
||||
datalen = hashlen;
|
||||
dataptr = indata;
|
||||
datalen = indatalen;
|
||||
}
|
||||
else
|
||||
{
|
||||
dataptr = data;
|
||||
if (no_data_padding)
|
||||
{
|
||||
dataptr += datalen - hashlen;
|
||||
datalen = hashlen;
|
||||
}
|
||||
}
|
||||
|
||||
if (prkdf->keyalgo == GCRY_PK_RSA && prkdf->keynbits > 2048)
|
||||
@ -5043,7 +5214,7 @@ do_auth (app_t app, ctrl_t ctrl, const char *keyidstr,
|
||||
err = prkdf_object_from_keyidstr (app, keyidstr, &prkdf);
|
||||
if (err)
|
||||
return err;
|
||||
if (!prkdf->usageflags.sign)
|
||||
if (!(prkdf->usageflags.sign || prkdf->gpgusage.auth))
|
||||
{
|
||||
log_error ("p15: key %s may not be used for authentication\n", keyidstr);
|
||||
return gpg_error (GPG_ERR_WRONG_KEY_USAGE);
|
||||
@ -5083,7 +5254,9 @@ do_decipher (app_t app, ctrl_t ctrl, const char *keyidstr,
|
||||
err = prkdf_object_from_keyidstr (app, keyidstr, &prkdf);
|
||||
if (err)
|
||||
return err;
|
||||
if (!(prkdf->usageflags.decrypt || prkdf->usageflags.unwrap))
|
||||
if (!(prkdf->usageflags.decrypt
|
||||
|| prkdf->usageflags.unwrap
|
||||
|| prkdf->gpgusage.encr ))
|
||||
{
|
||||
log_error ("p15: key %s may not be used for decryption\n", keyidstr);
|
||||
return gpg_error (GPG_ERR_WRONG_KEY_USAGE);
|
||||
@ -5113,7 +5286,6 @@ do_decipher (app_t app, ctrl_t ctrl, const char *keyidstr,
|
||||
return err;
|
||||
}
|
||||
|
||||
|
||||
/* Verify the PIN. */
|
||||
err = prepare_verify_pin (app, keyidstr, prkdf, aodf);
|
||||
if (!err)
|
||||
@ -5121,6 +5293,18 @@ do_decipher (app_t app, ctrl_t ctrl, const char *keyidstr,
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
if (prkdf->is_ecc && IS_CARDOS_5(app))
|
||||
{
|
||||
|
||||
err = iso7816_manage_security_env (app_get_slot (app), 0xF3, 0x01,
|
||||
NULL, 0);
|
||||
if (err)
|
||||
{
|
||||
log_error ("p15: MSE failed: %s\n", gpg_strerror (err));
|
||||
return err;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/* The next is guess work for CardOS. */
|
||||
if (app->app_local->card_product == CARD_PRODUCT_DTRUST)
|
||||
@ -5142,19 +5326,31 @@ do_decipher (app_t app, ctrl_t ctrl, const char *keyidstr,
|
||||
}
|
||||
else if (prkdf->key_reference_valid)
|
||||
{
|
||||
unsigned char mse[6];
|
||||
unsigned char mse[9];
|
||||
int i;
|
||||
|
||||
/* Note: This works with CardOS but the D-Trust card has the
|
||||
* problem that the next created signature would be broken. */
|
||||
|
||||
mse[0] = 0x80; /* Algorithm reference. */
|
||||
mse[1] = 1;
|
||||
mse[2] = 0x0a; /* RSA, no padding. */
|
||||
mse[3] = 0x84;
|
||||
mse[4] = 1;
|
||||
mse[5] = prkdf->key_reference;
|
||||
i = 0;
|
||||
if (!prkdf->is_ecc)
|
||||
{
|
||||
mse[i++] = 0x80; /* Algorithm reference. */
|
||||
mse[i++] = 1;
|
||||
mse[i++] = 0x0a; /* RSA, no padding. */
|
||||
}
|
||||
mse[i++] = 0x84; /* Key reference. */
|
||||
mse[i++] = 1;
|
||||
mse[i++] = prkdf->key_reference;
|
||||
if (prkdf->is_ecc && IS_CARDOS_5(app))
|
||||
{
|
||||
mse[i++] = 0x95; /* ???. */
|
||||
mse[i++] = 1;
|
||||
mse[i++] = 0x40;
|
||||
}
|
||||
log_assert (i <= DIM(mse));
|
||||
err = iso7816_manage_security_env (app_get_slot (app), 0x41, 0xB8,
|
||||
mse, sizeof mse);
|
||||
mse, i);
|
||||
}
|
||||
/* Check for MSE error. */
|
||||
if (err)
|
||||
@ -5174,10 +5370,27 @@ do_decipher (app_t app, ctrl_t ctrl, const char *keyidstr,
|
||||
if (app->app_local->card_product == CARD_PRODUCT_DTRUST)
|
||||
padind = 0x81;
|
||||
|
||||
err = iso7816_decipher (app_get_slot (app), exmode,
|
||||
indata, indatalen,
|
||||
le_value, padind,
|
||||
outdata, outdatalen);
|
||||
if (prkdf->is_ecc && IS_CARDOS_5(app))
|
||||
{
|
||||
if ((indatalen & 1) && *(const char *)indata == 0x04)
|
||||
{
|
||||
/* Strip indicator byte. */
|
||||
indatalen--;
|
||||
indata = (const char *)indata + 1;
|
||||
}
|
||||
err = iso7816_pso_csv (app_get_slot (app), exmode,
|
||||
indata, indatalen,
|
||||
le_value,
|
||||
outdata, outdatalen);
|
||||
}
|
||||
else
|
||||
{
|
||||
err = iso7816_decipher (app_get_slot (app), exmode,
|
||||
indata, indatalen,
|
||||
le_value, padind,
|
||||
outdata, outdatalen);
|
||||
}
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
|
||||
@ -758,6 +758,53 @@ iso7816_decipher (int slot, int extended_mode,
|
||||
}
|
||||
|
||||
|
||||
/* Perform the security operation COMPUTE SHARED SECRET. On success 0
|
||||
is returned and the shared secret is available in a newly allocated
|
||||
buffer stored at RESULT with its length stored at RESULTLEN. For
|
||||
LE see do_generate_keypair. */
|
||||
gpg_error_t
|
||||
iso7816_pso_csv (int slot, int extended_mode,
|
||||
const unsigned char *data, size_t datalen, int le,
|
||||
unsigned char **result, size_t *resultlen)
|
||||
{
|
||||
int sw;
|
||||
unsigned char *buf;
|
||||
|
||||
if (!data || !datalen || !result || !resultlen)
|
||||
return gpg_error (GPG_ERR_INV_VALUE);
|
||||
*result = NULL;
|
||||
*resultlen = 0;
|
||||
|
||||
if (!extended_mode)
|
||||
le = 256; /* Ignore provided Le and use what apdu_send uses. */
|
||||
else if (le >= 0 && le < 256)
|
||||
le = 256;
|
||||
|
||||
/* Data needds to be TLV format. */
|
||||
buf = xtrymalloc (datalen + 2);
|
||||
if (!buf)
|
||||
return gpg_error_from_syserror ();
|
||||
buf[0] = 0x9c;
|
||||
buf[1] = datalen;
|
||||
memcpy (buf+2, data, datalen);
|
||||
sw = apdu_send_le (slot, extended_mode,
|
||||
0x00, CMD_PSO, 0x80, 0xa6,
|
||||
datalen+2, (const char *)buf, le,
|
||||
result, resultlen);
|
||||
xfree (buf);
|
||||
if (sw != SW_SUCCESS)
|
||||
{
|
||||
/* Make sure that pending buffers are released. */
|
||||
xfree (*result);
|
||||
*result = NULL;
|
||||
*resultlen = 0;
|
||||
return map_sw (sw);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/* For LE see do_generate_keypair. */
|
||||
gpg_error_t
|
||||
iso7816_internal_authenticate (int slot, int extended_mode,
|
||||
|
||||
@ -118,6 +118,9 @@ gpg_error_t iso7816_decipher (int slot, int extended_mode,
|
||||
const unsigned char *data, size_t datalen,
|
||||
int le, int padind,
|
||||
unsigned char **result, size_t *resultlen);
|
||||
gpg_error_t iso7816_pso_csv (int slot, int extended_mode,
|
||||
const unsigned char *data, size_t datalen, int le,
|
||||
unsigned char **result, size_t *resultlen);
|
||||
gpg_error_t iso7816_internal_authenticate (int slot, int extended_mode,
|
||||
const unsigned char *data, size_t datalen,
|
||||
int le,
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user