27 			       struct pefile_context *ctx)  in pefile_parse_binary()  argument
64 		ctx->image_checksum_offset =  in pefile_parse_binary()
66 		ctx->header_size = pe32->header_size;  in pefile_parse_binary()
68 		ctx->n_data_dirents = pe32->data_dirs;  in pefile_parse_binary()
73 		ctx->image_checksum_offset =  in pefile_parse_binary()
75 		ctx->header_size = pe64->header_size;  in pefile_parse_binary()
77 		ctx->n_data_dirents = pe64->data_dirs;  in pefile_parse_binary()
85 	pr_debug("checksum @ %x\n", ctx->image_checksum_offset);  in pefile_parse_binary()
86 	pr_debug("header size = %x\n", ctx->header_size);  in pefile_parse_binary()
88 	if (cursor >= ctx->header_size || ctx->header_size >= datalen)  in pefile_parse_binary()
91 	if (ctx->n_data_dirents > (ctx->header_size - cursor) / sizeof(*dde))  in pefile_parse_binary()
95 	cursor += sizeof(*dde) * ctx->n_data_dirents;  in pefile_parse_binary()
97 	ctx->cert_dirent_offset =  in pefile_parse_binary()
99 	ctx->certs_size = ddir->certs.size;  in pefile_parse_binary()
106 	chkaddr(ctx->header_size, ddir->certs.virtual_address,  in pefile_parse_binary()
108 	ctx->sig_offset = ddir->certs.virtual_address;  in pefile_parse_binary()
109 	ctx->sig_len = ddir->certs.size;  in pefile_parse_binary()
111 		 ctx->sig_len, ctx->sig_offset,  in pefile_parse_binary()
112 		 ctx->sig_len, pebuf + ctx->sig_offset);  in pefile_parse_binary()
114 	ctx->n_sections = pe->sections;  in pefile_parse_binary()
115 	if (ctx->n_sections > (ctx->header_size - cursor) / sizeof(*sec))  in pefile_parse_binary()
117 	ctx->secs = secs = pebuf + cursor;  in pefile_parse_binary()
127 				    struct pefile_context *ctx)  in pefile_strip_sig_wrapper()  argument
133 	if (ctx->sig_len < sizeof(wrapper)) {  in pefile_strip_sig_wrapper()
138 	memcpy(&wrapper, pebuf + ctx->sig_offset, sizeof(wrapper));  in pefile_strip_sig_wrapper()
145 	if (round_up(wrapper.length, 8) != ctx->sig_len) {  in pefile_strip_sig_wrapper()
163 	ctx->sig_len = wrapper.length;  in pefile_strip_sig_wrapper()
164 	ctx->sig_offset += sizeof(wrapper);  in pefile_strip_sig_wrapper()
165 	ctx->sig_len -= sizeof(wrapper);  in pefile_strip_sig_wrapper()
166 	if (ctx->sig_len < 4) {  in pefile_strip_sig_wrapper()
172 	pkcs7 = pebuf + ctx->sig_offset;  in pefile_strip_sig_wrapper()
195 	if (len <= ctx->sig_len) {  in pefile_strip_sig_wrapper()
197 		ctx->sig_len = len;  in pefile_strip_sig_wrapper()
246 				     struct pefile_context *ctx,  in pefile_digest_pe_contents()  argument
255 	ret = crypto_shash_update(desc, pebuf, ctx->image_checksum_offset);  in pefile_digest_pe_contents()
259 	tmp = ctx->image_checksum_offset + sizeof(uint32_t);  in pefile_digest_pe_contents()
261 				  ctx->cert_dirent_offset - tmp);  in pefile_digest_pe_contents()
265 	tmp = ctx->cert_dirent_offset + sizeof(struct data_dirent);  in pefile_digest_pe_contents()
266 	ret = crypto_shash_update(desc, pebuf + tmp, ctx->header_size - tmp);  in pefile_digest_pe_contents()
270 	canon = kcalloc(ctx->n_sections, sizeof(unsigned), GFP_KERNEL);  in pefile_digest_pe_contents()
278 	for (loop = 1; loop < ctx->n_sections; loop++) {  in pefile_digest_pe_contents()
280 			if (pefile_compare_shdrs(&ctx->secs[canon[i]],  in pefile_digest_pe_contents()
281 						 &ctx->secs[loop]) > 0) {  in pefile_digest_pe_contents()
290 	hashed_bytes = ctx->header_size;  in pefile_digest_pe_contents()
291 	for (loop = 0; loop < ctx->n_sections; loop++) {  in pefile_digest_pe_contents()
293 		if (ctx->secs[i].raw_data_size == 0)  in pefile_digest_pe_contents()
296 					  pebuf + ctx->secs[i].data_addr,  in pefile_digest_pe_contents()
297 					  ctx->secs[i].raw_data_size);  in pefile_digest_pe_contents()
302 		hashed_bytes += ctx->secs[i].raw_data_size;  in pefile_digest_pe_contents()
307 		tmp = hashed_bytes + ctx->certs_size;  in pefile_digest_pe_contents()
323 			    struct pefile_context *ctx)  in pefile_digest_pe()  argument
331 	kenter(",%u", ctx->digest_algo);  in pefile_digest_pe()
336 	tfm = crypto_alloc_shash(hash_algo_name[ctx->digest_algo], 0, 0);  in pefile_digest_pe()
343 	if (digest_size != ctx->digest_len) {  in pefile_digest_pe()
345 			 digest_size, ctx->digest_len);  in pefile_digest_pe()
362 	ret = pefile_digest_pe_contents(pebuf, pelen, ctx, desc);  in pefile_digest_pe()
371 	pr_debug("Digest calc = [%*ph]\n", ctx->digest_len, digest);  in pefile_digest_pe()
376 	if (memcmp(digest, ctx->digest, ctx->digest_len) != 0) {  in pefile_digest_pe()
426 	struct pefile_context ctx;  in verify_pefile_signature()  local
433 	memset(&ctx, 0, sizeof(ctx));  in verify_pefile_signature()
434 	ret = pefile_parse_binary(pebuf, pelen, &ctx);  in verify_pefile_signature()
438 	ret = pefile_strip_sig_wrapper(pebuf, &ctx);  in verify_pefile_signature()
442 	pkcs7 = pkcs7_parse_message(pebuf + ctx.sig_offset, ctx.sig_len);  in verify_pefile_signature()
445 	ctx.pkcs7 = pkcs7;  in verify_pefile_signature()
447 	ret = pkcs7_get_content_data(ctx.pkcs7, &data, &datalen, false);  in verify_pefile_signature()
454 	ret = mscode_parse(&ctx);  in verify_pefile_signature()
459 		 ctx.digest_len, ctx.digest_len, ctx.digest);  in verify_pefile_signature()
464 	ret = pefile_digest_pe(pebuf, pelen, &ctx);  in verify_pefile_signature()
475 	pkcs7_free_message(ctx.pkcs7);  in verify_pefile_signature()