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GET /api/1.0/patches/2197962/?format=api
{ "id": 2197962, "url": "http://patchwork.ozlabs.org/api/1.0/patches/2197962/?format=api", "project": { "id": 12, "url": "http://patchwork.ozlabs.org/api/1.0/projects/12/?format=api", "name": "Linux CIFS Client", "link_name": "linux-cifs-client", "list_id": "linux-cifs.vger.kernel.org", "list_email": "linux-cifs@vger.kernel.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20260218213501.136844-13-ebiggers@kernel.org>", "date": "2026-02-18T21:34:58", "name": "[12/15] ksmbd: Use AES-CMAC library for SMB3 signature calculation", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "2dcfe101534e1b37503c79e3fb53b25d53149134", "submitter": { "id": 74690, "url": "http://patchwork.ozlabs.org/api/1.0/people/74690/?format=api", "name": "Eric Biggers", "email": "ebiggers@kernel.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-cifs-client/patch/20260218213501.136844-13-ebiggers@kernel.org/mbox/", "series": [ { "id": 492621, "url": "http://patchwork.ozlabs.org/api/1.0/series/492621/?format=api", "date": "2026-02-18T21:34:46", "name": "AES-CMAC library", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/492621/mbox/" } ], "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2197962/checks/", "tags": {}, "headers": { "Return-Path": "\n <linux-cifs+bounces-9453-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-cifs@vger.kernel.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=g5y8ewUh;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=104.64.211.4; helo=sin.lore.kernel.org;\n envelope-from=linux-cifs+bounces-9453-incoming=patchwork.ozlabs.org@vger.kernel.org;\n receiver=patchwork.ozlabs.org)", "smtp.subspace.kernel.org;\n\tdkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org\n header.b=\"g5y8ewUh\"", "smtp.subspace.kernel.org;\n arc=none smtp.client-ip=10.30.226.201" ], "Received": [ "from sin.lore.kernel.org (sin.lore.kernel.org [104.64.211.4])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature ECDSA (secp384r1) server-digest SHA384)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fGVKK4TLyz1xvS\n\tfor <incoming@patchwork.ozlabs.org>; Thu, 19 Feb 2026 08:39:49 +1100 (AEDT)", "from smtp.subspace.kernel.org (conduit.subspace.kernel.org\n [100.90.174.1])\n\tby sin.lore.kernel.org (Postfix) with ESMTP id 7C5553028064\n\tfor <incoming@patchwork.ozlabs.org>; Wed, 18 Feb 2026 21:37:53 +0000 (UTC)", "from localhost.localdomain (localhost.localdomain [127.0.0.1])\n\tby smtp.subspace.kernel.org (Postfix) with ESMTP id A70EA339878;\n\tWed, 18 Feb 2026 21:36:58 +0000 (UTC)", "from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org\n [10.30.226.201])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby smtp.subspace.kernel.org (Postfix) with ESMTPS id 77CB831C567;\n\tWed, 18 Feb 2026 21:36:58 +0000 (UTC)", "by smtp.kernel.org (Postfix) with ESMTPSA id CA9A2C2BCB6;\n\tWed, 18 Feb 2026 21:36:57 +0000 (UTC)" ], "ARC-Seal": "i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116;\n\tt=1771450618; cv=none;\n b=OtIgUNr/a75eOfj+tpMboaicUReQR5y71CNiaHznY82bR1B/x0612BxTdrmW2xhqFP893aalMC7mXbE/GqNs4mrromgr27+qSC3YHh5WEbCOVwUoRXkUIRn9d3ch1yFoWElJDD9NWeSy0qWtOktTSS5/gE4T0lhx8ME6Rwhg1us=", "ARC-Message-Signature": "i=1; a=rsa-sha256; d=subspace.kernel.org;\n\ts=arc-20240116; t=1771450618; c=relaxed/simple;\n\tbh=ZYqIlQtwnbFetuVQNGe0mxtg3leOUfnKsQb3/hSGeAY=;\n\th=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References:\n\t MIME-Version;\n b=Sx1Bc51a+NIQilVpvuvNzjDxQZyCsv4V5EU8QltnuCy5yLSH6Ho/58vE9W7vCeRJz4+nYZwBR5o8z9udSQTZBQlE6xPBuu5G+8PCFlEUcOA5AatHp6Fx2GbYwB3+NNo/aaE1wtRx2YJtPNI9+UgxkLi0mAUayyoQodNUf2xpgAI=", "ARC-Authentication-Results": "i=1; smtp.subspace.kernel.org;\n dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org\n header.b=g5y8ewUh; arc=none smtp.client-ip=10.30.226.201", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n\ts=k20201202; t=1771450618;\n\tbh=ZYqIlQtwnbFetuVQNGe0mxtg3leOUfnKsQb3/hSGeAY=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=g5y8ewUh5ElMc0r4CQ+/6110CWS7emGEDkYxi9P4CD+n9254VvFfIV7kNufM30hwW\n\t DYWnPg/aakMF7QE5EbTc764kRKkbqoNWnTXXhvxFBTzDQc3r/S3/LSCEzWj8zxx/cP\n\t 42DvyGaBxVtDmkIXQ8Hj4n5zS/mq9DIMeiuDdnbFBo42tE2S3POe8vSu0TsUIz+Ygl\n\t aJtEbzrsmsPaEEI6l+BNklX7CFr0/D4CDGtYixL5J/TZmXnTwGe8K3r9fdMXjHuDrg\n\t q8gyv0iQVwjgObGvyPC4FVQjRPiLMJFyRBxL4ST0gX37y3v1WI80zhrdWMn4bcfQ7+\n\t lL2Nhl8W9eMzg==", "From": "Eric Biggers <ebiggers@kernel.org>", "To": "linux-crypto@vger.kernel.org", "Cc": "linux-kernel@vger.kernel.org,\n\tArd Biesheuvel <ardb@kernel.org>,\n\t\"Jason A . Donenfeld\" <Jason@zx2c4.com>,\n\tHerbert Xu <herbert@gondor.apana.org.au>,\n\tlinux-arm-kernel@lists.infradead.org,\n\tlinux-cifs@vger.kernel.org,\n\tlinux-wireless@vger.kernel.org,\n\tEric Biggers <ebiggers@kernel.org>", "Subject": "[PATCH 12/15] ksmbd: Use AES-CMAC library for SMB3 signature\n calculation", "Date": "Wed, 18 Feb 2026 13:34:58 -0800", "Message-ID": "<20260218213501.136844-13-ebiggers@kernel.org>", "X-Mailer": "git-send-email 2.53.0", "In-Reply-To": "<20260218213501.136844-1-ebiggers@kernel.org>", "References": "<20260218213501.136844-1-ebiggers@kernel.org>", "Precedence": "bulk", "X-Mailing-List": "linux-cifs@vger.kernel.org", "List-Id": "<linux-cifs.vger.kernel.org>", "List-Subscribe": "<mailto:linux-cifs+subscribe@vger.kernel.org>", "List-Unsubscribe": "<mailto:linux-cifs+unsubscribe@vger.kernel.org>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit" }, "content": "Now that AES-CMAC has a library API, convert ksmbd_sign_smb3_pdu() to\nuse it instead of a \"cmac(aes)\" crypto_shash.\n\nThe result is simpler and faster code. With the library there's no need\nto dynamically allocate memory, no need to handle errors, and the\nAES-CMAC code is accessed directly without inefficient indirect calls\nand other unnecessary API overhead.\n\nSigned-off-by: Eric Biggers <ebiggers@kernel.org>\n---\n fs/smb/server/Kconfig | 2 +-\n fs/smb/server/auth.c | 51 +++++++++------------------------\n fs/smb/server/auth.h | 4 +--\n fs/smb/server/crypto_ctx.c | 58 --------------------------------------\n fs/smb/server/crypto_ctx.h | 12 --------\n fs/smb/server/server.c | 1 -\n fs/smb/server/smb2pdu.c | 8 ++----\n 7 files changed, 19 insertions(+), 117 deletions(-)", "diff": "diff --git a/fs/smb/server/Kconfig b/fs/smb/server/Kconfig\nindex 12594879cb64..eae3728cff54 100644\n--- a/fs/smb/server/Kconfig\n+++ b/fs/smb/server/Kconfig\n@@ -6,17 +6,17 @@ config SMB_SERVER\n \tselect NLS\n \tselect NLS_UTF8\n \tselect NLS_UCS2_UTILS\n \tselect CRYPTO\n \tselect CRYPTO_ECB\n+\tselect CRYPTO_LIB_AES_CBC_MACS\n \tselect CRYPTO_LIB_ARC4\n \tselect CRYPTO_LIB_DES\n \tselect CRYPTO_LIB_MD5\n \tselect CRYPTO_LIB_SHA256\n \tselect CRYPTO_LIB_SHA512\n \tselect CRYPTO_LIB_UTILS\n-\tselect CRYPTO_CMAC\n \tselect CRYPTO_AEAD2\n \tselect CRYPTO_CCM\n \tselect CRYPTO_GCM\n \tselect ASN1\n \tselect OID_REGISTRY\ndiff --git a/fs/smb/server/auth.c b/fs/smb/server/auth.c\nindex a69e8694605a..05234e5bd16e 100644\n--- a/fs/smb/server/auth.c\n+++ b/fs/smb/server/auth.c\n@@ -9,12 +9,12 @@\n #include <linux/uaccess.h>\n #include <linux/backing-dev.h>\n #include <linux/writeback.h>\n #include <linux/uio.h>\n #include <linux/xattr.h>\n-#include <crypto/hash.h>\n #include <crypto/aead.h>\n+#include <crypto/aes-cbc-macs.h>\n #include <crypto/md5.h>\n #include <crypto/sha2.h>\n #include <crypto/utils.h>\n #include <linux/random.h>\n #include <linux/scatterlist.h>\n@@ -488,50 +488,25 @@ void ksmbd_sign_smb2_pdu(struct ksmbd_conn *conn, char *key, struct kvec *iov,\n * @iov: buffer iov array\n * @n_vec:\tnumber of iovecs\n * @sig:\tsignature value generated for client request packet\n *\n */\n-int ksmbd_sign_smb3_pdu(struct ksmbd_conn *conn, char *key, struct kvec *iov,\n-\t\t\tint n_vec, char *sig)\n+void ksmbd_sign_smb3_pdu(struct ksmbd_conn *conn, char *key, struct kvec *iov,\n+\t\t\t int n_vec, char *sig)\n {\n-\tstruct ksmbd_crypto_ctx *ctx;\n-\tint rc, i;\n-\n-\tctx = ksmbd_crypto_ctx_find_cmacaes();\n-\tif (!ctx) {\n-\t\tksmbd_debug(AUTH, \"could not crypto alloc cmac\\n\");\n-\t\treturn -ENOMEM;\n-\t}\n-\n-\trc = crypto_shash_setkey(CRYPTO_CMACAES_TFM(ctx),\n-\t\t\t\t key,\n-\t\t\t\t SMB2_CMACAES_SIZE);\n-\tif (rc)\n-\t\tgoto out;\n-\n-\trc = crypto_shash_init(CRYPTO_CMACAES(ctx));\n-\tif (rc) {\n-\t\tksmbd_debug(AUTH, \"cmaces init error %d\\n\", rc);\n-\t\tgoto out;\n-\t}\n+\tstruct aes_cmac_key cmac_key;\n+\tstruct aes_cmac_ctx cmac_ctx;\n+\tint i;\n \n-\tfor (i = 0; i < n_vec; i++) {\n-\t\trc = crypto_shash_update(CRYPTO_CMACAES(ctx),\n-\t\t\t\t\t iov[i].iov_base,\n-\t\t\t\t\t iov[i].iov_len);\n-\t\tif (rc) {\n-\t\t\tksmbd_debug(AUTH, \"cmaces update error %d\\n\", rc);\n-\t\t\tgoto out;\n-\t\t}\n-\t}\n+\t/* This cannot fail, since we always pass a valid key length. */\n+\tstatic_assert(SMB2_CMACAES_SIZE == AES_KEYSIZE_128);\n+\taes_cmac_preparekey(&cmac_key, key, SMB2_CMACAES_SIZE);\n \n-\trc = crypto_shash_final(CRYPTO_CMACAES(ctx), sig);\n-\tif (rc)\n-\t\tksmbd_debug(AUTH, \"cmaces generation error %d\\n\", rc);\n-out:\n-\tksmbd_release_crypto_ctx(ctx);\n-\treturn rc;\n+\taes_cmac_init(&cmac_ctx, &cmac_key);\n+\tfor (i = 0; i < n_vec; i++)\n+\t\taes_cmac_update(&cmac_ctx, iov[i].iov_base, iov[i].iov_len);\n+\taes_cmac_final(&cmac_ctx, sig);\n }\n \n struct derivation {\n \tstruct kvec label;\n \tstruct kvec context;\ndiff --git a/fs/smb/server/auth.h b/fs/smb/server/auth.h\nindex 6d351d61b0e5..5767aabc63c9 100644\n--- a/fs/smb/server/auth.h\n+++ b/fs/smb/server/auth.h\n@@ -52,12 +52,12 @@ ksmbd_build_ntlmssp_challenge_blob(struct challenge_message *chgblob,\n \t\t\t\t struct ksmbd_conn *conn);\n int ksmbd_krb5_authenticate(struct ksmbd_session *sess, char *in_blob,\n \t\t\t int in_len,\tchar *out_blob, int *out_len);\n void ksmbd_sign_smb2_pdu(struct ksmbd_conn *conn, char *key, struct kvec *iov,\n \t\t\t int n_vec, char *sig);\n-int ksmbd_sign_smb3_pdu(struct ksmbd_conn *conn, char *key, struct kvec *iov,\n-\t\t\tint n_vec, char *sig);\n+void ksmbd_sign_smb3_pdu(struct ksmbd_conn *conn, char *key, struct kvec *iov,\n+\t\t\t int n_vec, char *sig);\n int ksmbd_gen_smb30_signingkey(struct ksmbd_session *sess,\n \t\t\t struct ksmbd_conn *conn);\n int ksmbd_gen_smb311_signingkey(struct ksmbd_session *sess,\n \t\t\t\tstruct ksmbd_conn *conn);\n void ksmbd_gen_smb30_encryptionkey(struct ksmbd_conn *conn,\ndiff --git a/fs/smb/server/crypto_ctx.c b/fs/smb/server/crypto_ctx.c\nindex fe29d186baf6..1cb0ea2042b5 100644\n--- a/fs/smb/server/crypto_ctx.c\n+++ b/fs/smb/server/crypto_ctx.c\n@@ -26,18 +26,10 @@ static inline void free_aead(struct crypto_aead *aead)\n {\n \tif (aead)\n \t\tcrypto_free_aead(aead);\n }\n \n-static void free_shash(struct shash_desc *shash)\n-{\n-\tif (shash) {\n-\t\tcrypto_free_shash(shash->tfm);\n-\t\tkfree(shash);\n-\t}\n-}\n-\n static struct crypto_aead *alloc_aead(int id)\n {\n \tstruct crypto_aead *tfm = NULL;\n \n \tswitch (id) {\n@@ -58,41 +50,14 @@ static struct crypto_aead *alloc_aead(int id)\n \t}\n \n \treturn tfm;\n }\n \n-static struct shash_desc *alloc_shash_desc(int id)\n-{\n-\tstruct crypto_shash *tfm = NULL;\n-\tstruct shash_desc *shash;\n-\n-\tswitch (id) {\n-\tcase CRYPTO_SHASH_CMACAES:\n-\t\ttfm = crypto_alloc_shash(\"cmac(aes)\", 0, 0);\n-\t\tbreak;\n-\tdefault:\n-\t\treturn NULL;\n-\t}\n-\n-\tif (IS_ERR(tfm))\n-\t\treturn NULL;\n-\n-\tshash = kzalloc(sizeof(*shash) + crypto_shash_descsize(tfm),\n-\t\t\tKSMBD_DEFAULT_GFP);\n-\tif (!shash)\n-\t\tcrypto_free_shash(tfm);\n-\telse\n-\t\tshash->tfm = tfm;\n-\treturn shash;\n-}\n-\n static void ctx_free(struct ksmbd_crypto_ctx *ctx)\n {\n \tint i;\n \n-\tfor (i = 0; i < CRYPTO_SHASH_MAX; i++)\n-\t\tfree_shash(ctx->desc[i]);\n \tfor (i = 0; i < CRYPTO_AEAD_MAX; i++)\n \t\tfree_aead(ctx->ccmaes[i]);\n \tkfree(ctx);\n }\n \n@@ -151,33 +116,10 @@ void ksmbd_release_crypto_ctx(struct ksmbd_crypto_ctx *ctx)\n \tctx_list.avail_ctx--;\n \tspin_unlock(&ctx_list.ctx_lock);\n \tctx_free(ctx);\n }\n \n-static struct ksmbd_crypto_ctx *____crypto_shash_ctx_find(int id)\n-{\n-\tstruct ksmbd_crypto_ctx *ctx;\n-\n-\tif (id >= CRYPTO_SHASH_MAX)\n-\t\treturn NULL;\n-\n-\tctx = ksmbd_find_crypto_ctx();\n-\tif (ctx->desc[id])\n-\t\treturn ctx;\n-\n-\tctx->desc[id] = alloc_shash_desc(id);\n-\tif (ctx->desc[id])\n-\t\treturn ctx;\n-\tksmbd_release_crypto_ctx(ctx);\n-\treturn NULL;\n-}\n-\n-struct ksmbd_crypto_ctx *ksmbd_crypto_ctx_find_cmacaes(void)\n-{\n-\treturn ____crypto_shash_ctx_find(CRYPTO_SHASH_CMACAES);\n-}\n-\n static struct ksmbd_crypto_ctx *____crypto_aead_ctx_find(int id)\n {\n \tstruct ksmbd_crypto_ctx *ctx;\n \n \tif (id >= CRYPTO_AEAD_MAX)\ndiff --git a/fs/smb/server/crypto_ctx.h b/fs/smb/server/crypto_ctx.h\nindex b9476ed520ae..02d2893665a4 100644\n--- a/fs/smb/server/crypto_ctx.h\n+++ b/fs/smb/server/crypto_ctx.h\n@@ -4,18 +4,12 @@\n */\n \n #ifndef __CRYPTO_CTX_H__\n #define __CRYPTO_CTX_H__\n \n-#include <crypto/hash.h>\n #include <crypto/aead.h>\n \n-enum {\n-\tCRYPTO_SHASH_CMACAES\t= 0,\n-\tCRYPTO_SHASH_MAX,\n-};\n-\n enum {\n \tCRYPTO_AEAD_AES_GCM = 16,\n \tCRYPTO_AEAD_AES_CCM,\n \tCRYPTO_AEAD_MAX,\n };\n@@ -26,23 +20,17 @@ enum {\n };\n \n struct ksmbd_crypto_ctx {\n \tstruct list_head\t\tlist;\n \n-\tstruct shash_desc\t\t*desc[CRYPTO_SHASH_MAX];\n \tstruct crypto_aead\t\t*ccmaes[CRYPTO_AEAD_MAX];\n };\n \n-#define CRYPTO_CMACAES(c)\t((c)->desc[CRYPTO_SHASH_CMACAES])\n-\n-#define CRYPTO_CMACAES_TFM(c)\t((c)->desc[CRYPTO_SHASH_CMACAES]->tfm)\n-\n #define CRYPTO_GCM(c)\t\t((c)->ccmaes[CRYPTO_AEAD_AES_GCM])\n #define CRYPTO_CCM(c)\t\t((c)->ccmaes[CRYPTO_AEAD_AES_CCM])\n \n void ksmbd_release_crypto_ctx(struct ksmbd_crypto_ctx *ctx);\n-struct ksmbd_crypto_ctx *ksmbd_crypto_ctx_find_cmacaes(void);\n struct ksmbd_crypto_ctx *ksmbd_crypto_ctx_find_gcm(void);\n struct ksmbd_crypto_ctx *ksmbd_crypto_ctx_find_ccm(void);\n void ksmbd_crypto_destroy(void);\n int ksmbd_crypto_create(void);\n \ndiff --git a/fs/smb/server/server.c b/fs/smb/server/server.c\nindex c2c074346da1..cc15d9d8468f 100644\n--- a/fs/smb/server/server.c\n+++ b/fs/smb/server/server.c\n@@ -631,11 +631,10 @@ MODULE_AUTHOR(\"Namjae Jeon <linkinjeon@kernel.org>\");\n MODULE_DESCRIPTION(\"Linux kernel CIFS/SMB SERVER\");\n MODULE_LICENSE(\"GPL\");\n MODULE_SOFTDEP(\"pre: ecb\");\n MODULE_SOFTDEP(\"pre: nls\");\n MODULE_SOFTDEP(\"pre: aes\");\n-MODULE_SOFTDEP(\"pre: cmac\");\n MODULE_SOFTDEP(\"pre: aead2\");\n MODULE_SOFTDEP(\"pre: ccm\");\n MODULE_SOFTDEP(\"pre: gcm\");\n module_init(ksmbd_server_init)\n module_exit(ksmbd_server_exit)\ndiff --git a/fs/smb/server/smb2pdu.c b/fs/smb/server/smb2pdu.c\nindex 7a88cf3bd29e..02bfe15edcab 100644\n--- a/fs/smb/server/smb2pdu.c\n+++ b/fs/smb/server/smb2pdu.c\n@@ -8964,12 +8964,11 @@ int smb3_check_sign_req(struct ksmbd_work *work)\n \tmemcpy(signature_req, hdr->Signature, SMB2_SIGNATURE_SIZE);\n \tmemset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE);\n \tiov[0].iov_base = (char *)&hdr->ProtocolId;\n \tiov[0].iov_len = len;\n \n-\tif (ksmbd_sign_smb3_pdu(conn, signing_key, iov, 1, signature))\n-\t\treturn 0;\n+\tksmbd_sign_smb3_pdu(conn, signing_key, iov, 1, signature);\n \n \tif (crypto_memneq(signature, signature_req, SMB2_SIGNATURE_SIZE)) {\n \t\tpr_err(\"bad smb2 signature\\n\");\n \t\treturn 0;\n \t}\n@@ -9016,13 +9015,12 @@ void smb3_set_sign_rsp(struct ksmbd_work *work)\n \t\tn_vec++;\n \t} else {\n \t\tiov = &work->iov[work->iov_idx];\n \t}\n \n-\tif (!ksmbd_sign_smb3_pdu(conn, signing_key, iov, n_vec,\n-\t\t\t\t signature))\n-\t\tmemcpy(hdr->Signature, signature, SMB2_SIGNATURE_SIZE);\n+\tksmbd_sign_smb3_pdu(conn, signing_key, iov, n_vec, signature);\n+\tmemcpy(hdr->Signature, signature, SMB2_SIGNATURE_SIZE);\n }\n \n /**\n * smb3_preauth_hash_rsp() - handler for computing preauth hash on response\n * @work: smb work containing response buffer\n", "prefixes": [ "12/15" ] }