From patchwork Thu Sep 29 01:56:31 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Enzo Matsumiya X-Patchwork-Id: 12993381 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C98BEC04A95 for ; Thu, 29 Sep 2022 01:57:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234427AbiI2B5K (ORCPT ); Wed, 28 Sep 2022 21:57:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51884 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231419AbiI2B5J (ORCPT ); Wed, 28 Sep 2022 21:57:09 -0400 Received: from smtp-out2.suse.de (smtp-out2.suse.de [IPv6:2001:67c:2178:6::1d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EDF80122077 for ; Wed, 28 Sep 2022 18:57:06 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 370E81F891; Thu, 29 Sep 2022 01:57:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1664416625; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=RVB5hF8k2W9sZHA8L0OYgfnTW07ngd1hY90O+IPHhow=; b=v4mX2Yh7p6fW9WiDxKmU2d83oxdbQUACOqs0+2yffQNVH5NdJQR6c5VfjIbkrBlkpLEJh4 1iOQ6EX0oLxqaq+wJpXjGeWoWI4SnZn3fc3zVG3sEOXhQ3c8ufsHzSP2R5p5/9xFzxmvzh wOaG1Wgl7i9du5ins6Iha9iW09Ti8YY= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1664416625; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=RVB5hF8k2W9sZHA8L0OYgfnTW07ngd1hY90O+IPHhow=; b=bC9QvQrnRbDvDupLd/dUmgaG910RUUFS74yE7O44+SAxbWf/jrZeS3XtdsqIErWSN5cBeL WJeqP+1R95z20tAw== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id AA8B1139B3; Thu, 29 Sep 2022 01:57:04 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id LVNDG3D7NGOAeQAAMHmgww (envelope-from ); Thu, 29 Sep 2022 01:57:04 +0000 From: Enzo Matsumiya To: linux-cifs@vger.kernel.org Cc: smfrench@gmail.com, pc@cjr.nz, ronniesahlberg@gmail.com, nspmangalore@gmail.com, tom@talpey.com, metze@samba.org Subject: [PATCH v3 2/8] cifs: secmech: use shash_desc directly, remove sdesc Date: Wed, 28 Sep 2022 22:56:31 -0300 Message-Id: <20220929015637.14400-3-ematsumiya@suse.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20220929015637.14400-1-ematsumiya@suse.de> References: <20220929015637.14400-1-ematsumiya@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org The struct sdesc is just a wrapper around shash_desc, with exact same memory layout. Replace the hashing TFMs with shash_desc as it's what's passed to the crypto API anyway. Also remove the crypto_shash pointers as they can be accessed via shash_desc->tfm (and are actually only used in the setkey calls). Adapt cifs_{alloc,free}_hash functions to this change. Signed-off-by: Enzo Matsumiya --- fs/cifs/cifsencrypt.c | 86 +++++++++++++---------------------------- fs/cifs/cifsglob.h | 26 ++++--------- fs/cifs/cifsproto.h | 5 +-- fs/cifs/link.c | 13 +++---- fs/cifs/misc.c | 49 ++++++++++++----------- fs/cifs/smb2misc.c | 13 +++---- fs/cifs/smb2transport.c | 72 +++++++++++++--------------------- 7 files changed, 98 insertions(+), 166 deletions(-) diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c index f622d2ba6bd0..30ece0c58c71 100644 --- a/fs/cifs/cifsencrypt.c +++ b/fs/cifs/cifsencrypt.c @@ -103,26 +103,24 @@ static int cifs_calc_signature(struct smb_rqst *rqst, if (!rqst->rq_iov || !signature || !server) return -EINVAL; - rc = cifs_alloc_hash("md5", &server->secmech.md5, - &server->secmech.sdescmd5); + rc = cifs_alloc_hash("md5", &server->secmech.md5); if (rc) return -1; - rc = crypto_shash_init(&server->secmech.sdescmd5->shash); + rc = crypto_shash_init(server->secmech.md5); if (rc) { cifs_dbg(VFS, "%s: Could not init md5\n", __func__); return rc; } - rc = crypto_shash_update(&server->secmech.sdescmd5->shash, + rc = crypto_shash_update(server->secmech.md5, server->session_key.response, server->session_key.len); if (rc) { cifs_dbg(VFS, "%s: Could not update with response\n", __func__); return rc; } - return __cifs_calc_signature(rqst, server, signature, - &server->secmech.sdescmd5->shash); + return __cifs_calc_signature(rqst, server, signature, server->secmech.md5); } /* must be called with server->srv_mutex held */ @@ -412,7 +410,7 @@ static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash, wchar_t *domain; wchar_t *server; - if (!ses->server->secmech.sdeschmacmd5) { + if (!ses->server->secmech.hmacmd5) { cifs_dbg(VFS, "%s: can't generate ntlmv2 hash\n", __func__); return -1; } @@ -420,14 +418,14 @@ static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash, /* calculate md4 hash of password */ E_md4hash(ses->password, nt_hash, nls_cp); - rc = crypto_shash_setkey(ses->server->secmech.hmacmd5, nt_hash, + rc = crypto_shash_setkey(ses->server->secmech.hmacmd5->tfm, nt_hash, CIFS_NTHASH_SIZE); if (rc) { cifs_dbg(VFS, "%s: Could not set NT Hash as a key\n", __func__); return rc; } - rc = crypto_shash_init(&ses->server->secmech.sdeschmacmd5->shash); + rc = crypto_shash_init(ses->server->secmech.hmacmd5); if (rc) { cifs_dbg(VFS, "%s: Could not init hmacmd5\n", __func__); return rc; @@ -448,7 +446,7 @@ static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash, memset(user, '\0', 2); } - rc = crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash, + rc = crypto_shash_update(ses->server->secmech.hmacmd5, (char *)user, 2 * len); kfree(user); if (rc) { @@ -468,7 +466,7 @@ static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash, len = cifs_strtoUTF16((__le16 *)domain, ses->domainName, len, nls_cp); rc = - crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash, + crypto_shash_update(ses->server->secmech.hmacmd5, (char *)domain, 2 * len); kfree(domain); if (rc) { @@ -488,7 +486,7 @@ static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash, len = cifs_strtoUTF16((__le16 *)server, ses->ip_addr, len, nls_cp); rc = - crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash, + crypto_shash_update(ses->server->secmech.hmacmd5, (char *)server, 2 * len); kfree(server); if (rc) { @@ -498,7 +496,7 @@ static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash, } } - rc = crypto_shash_final(&ses->server->secmech.sdeschmacmd5->shash, + rc = crypto_shash_final(ses->server->secmech.hmacmd5, ntlmv2_hash); if (rc) cifs_dbg(VFS, "%s: Could not generate md5 hash\n", __func__); @@ -518,12 +516,12 @@ CalcNTLMv2_response(const struct cifs_ses *ses, char *ntlmv2_hash) hash_len = ses->auth_key.len - (CIFS_SESS_KEY_SIZE + offsetof(struct ntlmv2_resp, challenge.key[0])); - if (!ses->server->secmech.sdeschmacmd5) { + if (!ses->server->secmech.hmacmd5) { cifs_dbg(VFS, "%s: can't generate ntlmv2 hash\n", __func__); return -1; } - rc = crypto_shash_setkey(ses->server->secmech.hmacmd5, + rc = crypto_shash_setkey(ses->server->secmech.hmacmd5->tfm, ntlmv2_hash, CIFS_HMAC_MD5_HASH_SIZE); if (rc) { cifs_dbg(VFS, "%s: Could not set NTLMV2 Hash as a key\n", @@ -531,7 +529,7 @@ CalcNTLMv2_response(const struct cifs_ses *ses, char *ntlmv2_hash) return rc; } - rc = crypto_shash_init(&ses->server->secmech.sdeschmacmd5->shash); + rc = crypto_shash_init(ses->server->secmech.hmacmd5); if (rc) { cifs_dbg(VFS, "%s: Could not init hmacmd5\n", __func__); return rc; @@ -543,7 +541,7 @@ CalcNTLMv2_response(const struct cifs_ses *ses, char *ntlmv2_hash) else memcpy(ntlmv2->challenge.key, ses->server->cryptkey, CIFS_SERVER_CHALLENGE_SIZE); - rc = crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash, + rc = crypto_shash_update(ses->server->secmech.hmacmd5, ntlmv2->challenge.key, hash_len); if (rc) { cifs_dbg(VFS, "%s: Could not update with response\n", __func__); @@ -551,7 +549,7 @@ CalcNTLMv2_response(const struct cifs_ses *ses, char *ntlmv2_hash) } /* Note that the MD5 digest over writes anon.challenge_key.key */ - rc = crypto_shash_final(&ses->server->secmech.sdeschmacmd5->shash, + rc = crypto_shash_final(ses->server->secmech.hmacmd5, ntlmv2->ntlmv2_hash); if (rc) cifs_dbg(VFS, "%s: Could not generate md5 hash\n", __func__); @@ -627,9 +625,7 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp) cifs_server_lock(ses->server); - rc = cifs_alloc_hash("hmac(md5)", - &ses->server->secmech.hmacmd5, - &ses->server->secmech.sdeschmacmd5); + rc = cifs_alloc_hash("hmac(md5)", &ses->server->secmech.hmacmd5); if (rc) { goto unlock; } @@ -649,7 +645,7 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp) } /* now calculate the session key for NTLMv2 */ - rc = crypto_shash_setkey(ses->server->secmech.hmacmd5, + rc = crypto_shash_setkey(ses->server->secmech.hmacmd5->tfm, ntlmv2_hash, CIFS_HMAC_MD5_HASH_SIZE); if (rc) { cifs_dbg(VFS, "%s: Could not set NTLMV2 Hash as a key\n", @@ -657,13 +653,13 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp) goto unlock; } - rc = crypto_shash_init(&ses->server->secmech.sdeschmacmd5->shash); + rc = crypto_shash_init(ses->server->secmech.hmacmd5); if (rc) { cifs_dbg(VFS, "%s: Could not init hmacmd5\n", __func__); goto unlock; } - rc = crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash, + rc = crypto_shash_update(ses->server->secmech.hmacmd5, ntlmv2->ntlmv2_hash, CIFS_HMAC_MD5_HASH_SIZE); if (rc) { @@ -671,7 +667,7 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp) goto unlock; } - rc = crypto_shash_final(&ses->server->secmech.sdeschmacmd5->shash, + rc = crypto_shash_final(ses->server->secmech.hmacmd5, ses->auth_key.response); if (rc) cifs_dbg(VFS, "%s: Could not generate md5 hash\n", __func__); @@ -718,30 +714,11 @@ calc_seckey(struct cifs_ses *ses) void cifs_crypto_secmech_release(struct TCP_Server_Info *server) { - if (server->secmech.cmacaes) { - crypto_free_shash(server->secmech.cmacaes); - server->secmech.cmacaes = NULL; - } - - if (server->secmech.hmacsha256) { - crypto_free_shash(server->secmech.hmacsha256); - server->secmech.hmacsha256 = NULL; - } - - if (server->secmech.md5) { - crypto_free_shash(server->secmech.md5); - server->secmech.md5 = NULL; - } - - if (server->secmech.sha512) { - crypto_free_shash(server->secmech.sha512); - server->secmech.sha512 = NULL; - } - - if (server->secmech.hmacmd5) { - crypto_free_shash(server->secmech.hmacmd5); - server->secmech.hmacmd5 = NULL; - } + cifs_free_hash(&server->secmech.aes_cmac); + cifs_free_hash(&server->secmech.hmacsha256); + cifs_free_hash(&server->secmech.md5); + cifs_free_hash(&server->secmech.sha512); + cifs_free_hash(&server->secmech.hmacmd5); if (server->secmech.enc) { crypto_free_aead(server->secmech.enc); @@ -752,15 +729,4 @@ cifs_crypto_secmech_release(struct TCP_Server_Info *server) crypto_free_aead(server->secmech.dec); server->secmech.dec = NULL; } - - kfree(server->secmech.sdesccmacaes); - server->secmech.sdesccmacaes = NULL; - kfree(server->secmech.sdeschmacsha256); - server->secmech.sdeschmacsha256 = NULL; - kfree(server->secmech.sdeschmacmd5); - server->secmech.sdeschmacmd5 = NULL; - kfree(server->secmech.sdescmd5); - server->secmech.sdescmd5 = NULL; - kfree(server->secmech.sdescsha512); - server->secmech.sdescsha512 = NULL; } diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index cbb108b15412..ea76f4d7ef62 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -153,26 +153,16 @@ struct session_key { char *response; }; -/* crypto security descriptor definition */ -struct sdesc { - struct shash_desc shash; - char ctx[]; -}; - /* crypto hashing related structure/fields, not specific to a sec mech */ struct cifs_secmech { - struct crypto_shash *hmacmd5; /* hmac-md5 hash function */ - struct crypto_shash *md5; /* md5 hash function */ - struct crypto_shash *hmacsha256; /* hmac-sha256 hash function */ - struct crypto_shash *cmacaes; /* block-cipher based MAC function */ - struct crypto_shash *sha512; /* sha512 hash function */ - struct sdesc *sdeschmacmd5; /* ctxt to generate ntlmv2 hash, CR1 */ - struct sdesc *sdescmd5; /* ctxt to generate cifs/smb signature */ - struct sdesc *sdeschmacsha256; /* ctxt to generate smb2 signature */ - struct sdesc *sdesccmacaes; /* ctxt to generate smb3 signature */ - struct sdesc *sdescsha512; /* ctxt to generate smb3.11 signing key */ - struct crypto_aead *enc; /* smb3 AEAD encryption TFM (AES-CCM and AES-GCM) */ - struct crypto_aead *dec; /* smb3 AEAD decryption TFM (AES-CCM and AES-GCM) */ + struct shash_desc *hmacmd5; /* hmacmd5 hash function, for NTLMv2/CR1 hashes */ + struct shash_desc *md5; /* md5 hash function, for CIFS/SMB1 signatures */ + struct shash_desc *hmacsha256; /* hmac-sha256 hash function, for SMB2 signatures */ + struct shash_desc *sha512; /* sha512 hash function, for SMB3.1.1 preauth hash */ + struct shash_desc *aes_cmac; /* block-cipher based MAC function, for SMB3 signatures */ + + struct crypto_aead *enc; /* smb3 encryption AEAD TFM (AES-CCM and AES-GCM) */ + struct crypto_aead *dec; /* smb3 decryption AEAD TFM (AES-CCM and AES-GCM) */ }; /* per smb session structure/fields */ diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h index 3bc94bcc7177..f5adcb8ea04d 100644 --- a/fs/cifs/cifsproto.h +++ b/fs/cifs/cifsproto.h @@ -598,9 +598,8 @@ struct cifs_aio_ctx *cifs_aio_ctx_alloc(void); void cifs_aio_ctx_release(struct kref *refcount); int setup_aio_ctx_iter(struct cifs_aio_ctx *ctx, struct iov_iter *iter, int rw); -int cifs_alloc_hash(const char *name, struct crypto_shash **shash, - struct sdesc **sdesc); -void cifs_free_hash(struct crypto_shash **shash, struct sdesc **sdesc); +int cifs_alloc_hash(const char *name, struct shash_desc **sdesc); +void cifs_free_hash(struct shash_desc **sdesc); extern void rqst_page_get_length(struct smb_rqst *rqst, unsigned int page, unsigned int *len, unsigned int *offset); diff --git a/fs/cifs/link.c b/fs/cifs/link.c index 6803cb27eecc..cd29c296cec6 100644 --- a/fs/cifs/link.c +++ b/fs/cifs/link.c @@ -38,29 +38,28 @@ static int symlink_hash(unsigned int link_len, const char *link_str, u8 *md5_hash) { int rc; - struct crypto_shash *md5 = NULL; - struct sdesc *sdescmd5 = NULL; + struct shash_desc *md5 = NULL; - rc = cifs_alloc_hash("md5", &md5, &sdescmd5); + rc = cifs_alloc_hash("md5", &md5); if (rc) goto symlink_hash_err; - rc = crypto_shash_init(&sdescmd5->shash); + rc = crypto_shash_init(md5); if (rc) { cifs_dbg(VFS, "%s: Could not init md5 shash\n", __func__); goto symlink_hash_err; } - rc = crypto_shash_update(&sdescmd5->shash, link_str, link_len); + rc = crypto_shash_update(md5, link_str, link_len); if (rc) { cifs_dbg(VFS, "%s: Could not update with link_str\n", __func__); goto symlink_hash_err; } - rc = crypto_shash_final(&sdescmd5->shash, md5_hash); + rc = crypto_shash_final(md5, md5_hash); if (rc) cifs_dbg(VFS, "%s: Could not generate md5 hash\n", __func__); symlink_hash_err: - cifs_free_hash(&md5, &sdescmd5); + cifs_free_hash(&md5); return rc; } diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c index c6679398fff9..535dbe6ff994 100644 --- a/fs/cifs/misc.c +++ b/fs/cifs/misc.c @@ -1071,59 +1071,58 @@ setup_aio_ctx_iter(struct cifs_aio_ctx *ctx, struct iov_iter *iter, int rw) /** * cifs_alloc_hash - allocate hash and hash context together * @name: The name of the crypto hash algo - * @shash: Where to put the pointer to the hash algo - * @sdesc: Where to put the pointer to the hash descriptor + * @sdesc: SHASH descriptor where to put the pointer to the hash TFM * * The caller has to make sure @sdesc is initialized to either NULL or - * a valid context. Both can be freed via cifs_free_hash(). + * a valid context. It can be freed via cifs_free_hash(). */ int -cifs_alloc_hash(const char *name, - struct crypto_shash **shash, struct sdesc **sdesc) +cifs_alloc_hash(const char *name, struct shash_desc **sdesc) { int rc = 0; - size_t size; + struct crypto_shash *alg = NULL; - if (*sdesc != NULL) + if (*sdesc) return 0; - *shash = crypto_alloc_shash(name, 0, 0); - if (IS_ERR(*shash)) { - cifs_dbg(VFS, "Could not allocate crypto %s\n", name); - rc = PTR_ERR(*shash); - *shash = NULL; + alg = crypto_alloc_shash(name, 0, 0); + if (IS_ERR(alg)) { + cifs_dbg(VFS, "Could not allocate shash TFM '%s'\n", name); + rc = PTR_ERR(alg); *sdesc = NULL; return rc; } - size = sizeof(struct shash_desc) + crypto_shash_descsize(*shash); - *sdesc = kmalloc(size, GFP_KERNEL); + *sdesc = kmalloc(sizeof(struct shash_desc) + crypto_shash_descsize(alg), GFP_KERNEL); if (*sdesc == NULL) { - cifs_dbg(VFS, "no memory left to allocate crypto %s\n", name); - crypto_free_shash(*shash); - *shash = NULL; + cifs_dbg(VFS, "no memory left to allocate shash TFM '%s'\n", name); + crypto_free_shash(alg); return -ENOMEM; } - (*sdesc)->shash.tfm = *shash; + (*sdesc)->tfm = alg; return 0; } /** * cifs_free_hash - free hash and hash context together - * @shash: Where to find the pointer to the hash algo - * @sdesc: Where to find the pointer to the hash descriptor + * @sdesc: Where to find the pointer to the hash TFM * - * Freeing a NULL hash or context is safe. + * Freeing a NULL descriptor is safe. */ void -cifs_free_hash(struct crypto_shash **shash, struct sdesc **sdesc) +cifs_free_hash(struct shash_desc **sdesc) { + if (unlikely(!sdesc) || !*sdesc) + return; + + if ((*sdesc)->tfm) { + crypto_free_shash((*sdesc)->tfm); + (*sdesc)->tfm = NULL; + } + kfree(*sdesc); *sdesc = NULL; - if (*shash) - crypto_free_shash(*shash); - *shash = NULL; } /** diff --git a/fs/cifs/smb2misc.c b/fs/cifs/smb2misc.c index d73e5672aac4..7db5c09ecceb 100644 --- a/fs/cifs/smb2misc.c +++ b/fs/cifs/smb2misc.c @@ -870,8 +870,8 @@ smb311_update_preauth_hash(struct cifs_ses *ses, struct TCP_Server_Info *server, struct kvec *iov, int nvec) { int i, rc; - struct sdesc *d; struct smb2_hdr *hdr; + struct shash_desc *sha512 = NULL; hdr = (struct smb2_hdr *)iov[0].iov_base; /* neg prot are always taken */ @@ -901,14 +901,14 @@ smb311_update_preauth_hash(struct cifs_ses *ses, struct TCP_Server_Info *server, if (rc) return rc; - d = server->secmech.sdescsha512; - rc = crypto_shash_init(&d->shash); + sha512 = server->secmech.sha512; + rc = crypto_shash_init(sha512); if (rc) { cifs_dbg(VFS, "%s: Could not init sha512 shash\n", __func__); return rc; } - rc = crypto_shash_update(&d->shash, ses->preauth_sha_hash, + rc = crypto_shash_update(sha512, ses->preauth_sha_hash, SMB2_PREAUTH_HASH_SIZE); if (rc) { cifs_dbg(VFS, "%s: Could not update sha512 shash\n", __func__); @@ -916,8 +916,7 @@ smb311_update_preauth_hash(struct cifs_ses *ses, struct TCP_Server_Info *server, } for (i = 0; i < nvec; i++) { - rc = crypto_shash_update(&d->shash, - iov[i].iov_base, iov[i].iov_len); + rc = crypto_shash_update(sha512, iov[i].iov_base, iov[i].iov_len); if (rc) { cifs_dbg(VFS, "%s: Could not update sha512 shash\n", __func__); @@ -925,7 +924,7 @@ smb311_update_preauth_hash(struct cifs_ses *ses, struct TCP_Server_Info *server, } } - rc = crypto_shash_final(&d->shash, ses->preauth_sha_hash); + rc = crypto_shash_final(sha512, ses->preauth_sha_hash); if (rc) { cifs_dbg(VFS, "%s: Could not finalize sha512 shash\n", __func__); diff --git a/fs/cifs/smb2transport.c b/fs/cifs/smb2transport.c index d4e1a5d74dcd..dfcbcc0b86e4 100644 --- a/fs/cifs/smb2transport.c +++ b/fs/cifs/smb2transport.c @@ -32,19 +32,17 @@ smb3_crypto_shash_allocate(struct TCP_Server_Info *server) struct cifs_secmech *p = &server->secmech; int rc; - rc = cifs_alloc_hash("hmac(sha256)", - &p->hmacsha256, - &p->sdeschmacsha256); + rc = cifs_alloc_hash("hmac(sha256)", &p->hmacsha256); if (rc) goto err; - rc = cifs_alloc_hash("cmac(aes)", &p->cmacaes, &p->sdesccmacaes); + rc = cifs_alloc_hash("cmac(aes)", &p->aes_cmac); if (rc) goto err; return 0; err: - cifs_free_hash(&p->hmacsha256, &p->sdeschmacsha256); + cifs_free_hash(&p->hmacsha256); return rc; } @@ -54,25 +52,23 @@ smb311_crypto_shash_allocate(struct TCP_Server_Info *server) struct cifs_secmech *p = &server->secmech; int rc = 0; - rc = cifs_alloc_hash("hmac(sha256)", - &p->hmacsha256, - &p->sdeschmacsha256); + rc = cifs_alloc_hash("hmac(sha256)", &p->hmacsha256); if (rc) return rc; - rc = cifs_alloc_hash("cmac(aes)", &p->cmacaes, &p->sdesccmacaes); + rc = cifs_alloc_hash("cmac(aes)", &p->aes_cmac); if (rc) goto err; - rc = cifs_alloc_hash("sha512", &p->sha512, &p->sdescsha512); + rc = cifs_alloc_hash("sha512", &p->sha512); if (rc) goto err; return 0; err: - cifs_free_hash(&p->cmacaes, &p->sdesccmacaes); - cifs_free_hash(&p->hmacsha256, &p->sdeschmacsha256); + cifs_free_hash(&p->aes_cmac); + cifs_free_hash(&p->hmacsha256); return rc; } @@ -220,8 +216,6 @@ smb2_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server, struct smb2_hdr *shdr = (struct smb2_hdr *)iov[0].iov_base; struct cifs_ses *ses; struct shash_desc *shash; - struct crypto_shash *hash; - struct sdesc *sdesc = NULL; struct smb_rqst drqst; ses = smb2_find_smb_ses(server, le64_to_cpu(shdr->SessionId)); @@ -234,19 +228,17 @@ smb2_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server, memset(shdr->Signature, 0x0, SMB2_SIGNATURE_SIZE); if (allocate_crypto) { - rc = cifs_alloc_hash("hmac(sha256)", &hash, &sdesc); + rc = cifs_alloc_hash("hmac(sha256)", &shash); if (rc) { cifs_server_dbg(VFS, "%s: sha256 alloc failed\n", __func__); goto out; } - shash = &sdesc->shash; } else { - hash = server->secmech.hmacsha256; - shash = &server->secmech.sdeschmacsha256->shash; + shash = server->secmech.hmacsha256; } - rc = crypto_shash_setkey(hash, ses->auth_key.response, + rc = crypto_shash_setkey(shash->tfm, ses->auth_key.response, SMB2_NTLMV2_SESSKEY_SIZE); if (rc) { cifs_server_dbg(VFS, @@ -288,7 +280,7 @@ smb2_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server, out: if (allocate_crypto) - cifs_free_hash(&hash, &sdesc); + cifs_free_hash(&shash); if (ses) cifs_put_smb_ses(ses); return rc; @@ -315,42 +307,38 @@ static int generate_key(struct cifs_ses *ses, struct kvec label, goto smb3signkey_ret; } - rc = crypto_shash_setkey(server->secmech.hmacsha256, + rc = crypto_shash_setkey(server->secmech.hmacsha256->tfm, ses->auth_key.response, SMB2_NTLMV2_SESSKEY_SIZE); if (rc) { cifs_server_dbg(VFS, "%s: Could not set with session key\n", __func__); goto smb3signkey_ret; } - rc = crypto_shash_init(&server->secmech.sdeschmacsha256->shash); + rc = crypto_shash_init(server->secmech.hmacsha256); if (rc) { cifs_server_dbg(VFS, "%s: Could not init sign hmac\n", __func__); goto smb3signkey_ret; } - rc = crypto_shash_update(&server->secmech.sdeschmacsha256->shash, - i, 4); + rc = crypto_shash_update(server->secmech.hmacsha256, i, 4); if (rc) { cifs_server_dbg(VFS, "%s: Could not update with n\n", __func__); goto smb3signkey_ret; } - rc = crypto_shash_update(&server->secmech.sdeschmacsha256->shash, - label.iov_base, label.iov_len); + rc = crypto_shash_update(server->secmech.hmacsha256, label.iov_base, label.iov_len); if (rc) { cifs_server_dbg(VFS, "%s: Could not update with label\n", __func__); goto smb3signkey_ret; } - rc = crypto_shash_update(&server->secmech.sdeschmacsha256->shash, - &zero, 1); + rc = crypto_shash_update(server->secmech.hmacsha256, &zero, 1); if (rc) { cifs_server_dbg(VFS, "%s: Could not update with zero\n", __func__); goto smb3signkey_ret; } - rc = crypto_shash_update(&server->secmech.sdeschmacsha256->shash, - context.iov_base, context.iov_len); + rc = crypto_shash_update(server->secmech.hmacsha256, context.iov_base, context.iov_len); if (rc) { cifs_server_dbg(VFS, "%s: Could not update with context\n", __func__); goto smb3signkey_ret; @@ -358,19 +346,16 @@ static int generate_key(struct cifs_ses *ses, struct kvec label, if ((server->cipher_type == SMB2_ENCRYPTION_AES256_CCM) || (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM)) { - rc = crypto_shash_update(&server->secmech.sdeschmacsha256->shash, - L256, 4); + rc = crypto_shash_update(server->secmech.hmacsha256, L256, 4); } else { - rc = crypto_shash_update(&server->secmech.sdeschmacsha256->shash, - L128, 4); + rc = crypto_shash_update(server->secmech.hmacsha256, L128, 4); } if (rc) { cifs_server_dbg(VFS, "%s: Could not update with L\n", __func__); goto smb3signkey_ret; } - rc = crypto_shash_final(&server->secmech.sdeschmacsha256->shash, - hashptr); + rc = crypto_shash_final(server->secmech.hmacsha256, hashptr); if (rc) { cifs_server_dbg(VFS, "%s: Could not generate sha256 hash\n", __func__); goto smb3signkey_ret; @@ -551,8 +536,6 @@ smb3_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server, struct kvec *iov = rqst->rq_iov; struct smb2_hdr *shdr = (struct smb2_hdr *)iov[0].iov_base; struct shash_desc *shash; - struct crypto_shash *hash; - struct sdesc *sdesc = NULL; struct smb_rqst drqst; u8 key[SMB3_SIGN_KEY_SIZE]; @@ -563,27 +546,24 @@ smb3_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server, } if (allocate_crypto) { - rc = cifs_alloc_hash("cmac(aes)", &hash, &sdesc); + rc = cifs_alloc_hash("cmac(aes)", &shash); if (rc) return rc; - - shash = &sdesc->shash; } else { - hash = server->secmech.cmacaes; - shash = &server->secmech.sdesccmacaes->shash; + shash = server->secmech.aes_cmac; } memset(smb3_signature, 0x0, SMB2_CMACAES_SIZE); memset(shdr->Signature, 0x0, SMB2_SIGNATURE_SIZE); - rc = crypto_shash_setkey(hash, key, SMB2_CMACAES_SIZE); + rc = crypto_shash_setkey(shash->tfm, key, SMB2_CMACAES_SIZE); if (rc) { cifs_server_dbg(VFS, "%s: Could not set key for cmac aes\n", __func__); goto out; } /* - * we already allocate sdesccmacaes when we init smb3 signing key, + * we already allocate aes_cmac when we init smb3 signing key, * so unlike smb2 case we do not have to check here if secmech are * initialized */ @@ -619,7 +599,7 @@ smb3_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server, out: if (allocate_crypto) - cifs_free_hash(&hash, &sdesc); + cifs_free_hash(&shash); return rc; }