158 lines
4.5 KiB
C
158 lines
4.5 KiB
C
/*
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* Copyright (c) 2016 Thomas Pornin <pornin@bolet.org>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "t_inner.h"
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static void
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cc_none0(const br_ssl_client_certificate_class **pctx)
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{
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(void)pctx;
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}
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static void
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cc_none1(const br_ssl_client_certificate_class **pctx, size_t len)
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{
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(void)pctx;
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(void)len;
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}
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static void
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cc_none2(const br_ssl_client_certificate_class **pctx,
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const unsigned char *data, size_t len)
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{
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(void)pctx;
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(void)data;
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(void)len;
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}
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static void
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cc_choose(const br_ssl_client_certificate_class **pctx,
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const br_ssl_client_context *cc, uint32_t auth_types,
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br_ssl_client_certificate *choices)
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{
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br_ssl_client_certificate_rsa_context *zc;
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int x;
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(void)cc;
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zc = (br_ssl_client_certificate_rsa_context *)pctx;
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x = br_ssl_choose_hash((unsigned)auth_types);
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if (x == 0 && (auth_types & 1) == 0) {
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memset(choices, 0, sizeof *choices);
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}
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choices->auth_type = BR_AUTH_RSA;
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choices->hash_id = x;
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choices->chain = zc->chain;
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choices->chain_len = zc->chain_len;
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}
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/*
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* OID for hash functions in RSA signatures.
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*/
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#if 0
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static const unsigned char HASH_OID_SHA1[] = {
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0x05, 0x2B, 0x0E, 0x03, 0x02, 0x1A
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};
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static const unsigned char HASH_OID_SHA224[] = {
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0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x04
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};
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static const unsigned char HASH_OID_SHA256[] = {
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0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01
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};
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static const unsigned char HASH_OID_SHA384[] = {
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0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x02
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};
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static const unsigned char HASH_OID_SHA512[] = {
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0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x03
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};
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#endif
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// EFP3 - use copy of these present in another file. GCC won't merge local static arrays, even if they're equal, it seems
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extern const unsigned char HASH_OID_SHA1[];
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extern const unsigned char HASH_OID_SHA224[];
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extern const unsigned char HASH_OID_SHA256[];
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extern const unsigned char HASH_OID_SHA384[];
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extern const unsigned char HASH_OID_SHA512[];
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static const unsigned char *HASH_OID[] PROGMEM = {
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HASH_OID_SHA1,
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HASH_OID_SHA224,
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HASH_OID_SHA256,
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HASH_OID_SHA384,
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HASH_OID_SHA512
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};
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static size_t
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cc_do_sign(const br_ssl_client_certificate_class **pctx,
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int hash_id, size_t hv_len, unsigned char *data, size_t len)
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{
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br_ssl_client_certificate_rsa_context *zc;
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unsigned char hv[64];
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const unsigned char *hash_oid;
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size_t sig_len;
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zc = (br_ssl_client_certificate_rsa_context *)pctx;
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memcpy(hv, data, hv_len);
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if (hash_id == 0) {
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hash_oid = NULL;
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} else if (hash_id >= 2 && hash_id <= 6) {
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hash_oid = HASH_OID[hash_id - 2];
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} else {
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return 0;
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}
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sig_len = (zc->sk->n_bitlen + 7) >> 3;
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if (len < sig_len) {
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return 0;
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}
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return zc->irsasign(hash_oid, hv, hv_len, zc->sk, data) ? sig_len : 0;
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}
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static const br_ssl_client_certificate_class ccert_vtable PROGMEM = {
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sizeof(br_ssl_client_certificate_rsa_context),
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cc_none0, /* start_name_list */
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cc_none1, /* start_name */
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cc_none2, /* append_name */
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cc_none0, /* end_name */
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cc_none0, /* end_name_list */
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cc_choose,
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0,
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cc_do_sign
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};
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/* see bearssl_ssl.h */
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void
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br_ssl_client_set_single_rsa(br_ssl_client_context *cc,
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const br_x509_certificate *chain, size_t chain_len,
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const br_rsa_private_key *sk, br_rsa_pkcs1_sign irsasign)
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{
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cc->client_auth.single_rsa.vtable = &ccert_vtable;
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cc->client_auth.single_rsa.chain = chain;
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cc->client_auth.single_rsa.chain_len = chain_len;
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cc->client_auth.single_rsa.sk = sk;
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cc->client_auth.single_rsa.irsasign = irsasign;
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cc->client_auth_vtable = &cc->client_auth.single_rsa.vtable;
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}
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