From f50fff73d620cd6e8f48bc58d4f1c944615a3fea Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Mon, 27 Jun 2022 11:52:02 +0200 Subject: nvme: implement In-Band authentication Implement NVMe-oF In-Band authentication according to NVMe TPAR 8006. This patch adds two new fabric options 'dhchap_secret' to specify the pre-shared key (in ASCII respresentation according to NVMe 2.0 section 8.13.5.8 'Secret representation') and 'dhchap_ctrl_secret' to specify the pre-shared controller key for bi-directional authentication of both the host and the controller. Re-authentication can be triggered by writing the PSK into the new controller sysfs attribute 'dhchap_secret' or 'dhchap_ctrl_secret'. Signed-off-by: Hannes Reinecke Reviewed-by: Sagi Grimberg Signed-off-by: Christoph Hellwig [axboe: fold in clang build fix] Signed-off-by: Jens Axboe --- include/linux/nvme-auth.h | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 include/linux/nvme-auth.h (limited to 'include/linux/nvme-auth.h') diff --git a/include/linux/nvme-auth.h b/include/linux/nvme-auth.h new file mode 100644 index 000000000000..354456826221 --- /dev/null +++ b/include/linux/nvme-auth.h @@ -0,0 +1,33 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2021 Hannes Reinecke, SUSE Software Solutions + */ + +#ifndef _NVME_AUTH_H +#define _NVME_AUTH_H + +#include + +struct nvme_dhchap_key { + u8 *key; + size_t len; + u8 hash; +}; + +u32 nvme_auth_get_seqnum(void); +const char *nvme_auth_dhgroup_name(u8 dhgroup_id); +const char *nvme_auth_dhgroup_kpp(u8 dhgroup_id); +u8 nvme_auth_dhgroup_id(const char *dhgroup_name); + +const char *nvme_auth_hmac_name(u8 hmac_id); +const char *nvme_auth_digest_name(u8 hmac_id); +size_t nvme_auth_hmac_hash_len(u8 hmac_id); +u8 nvme_auth_hmac_id(const char *hmac_name); + +struct nvme_dhchap_key *nvme_auth_extract_key(unsigned char *secret, + u8 key_hash); +void nvme_auth_free_key(struct nvme_dhchap_key *key); +u8 *nvme_auth_transform_key(struct nvme_dhchap_key *key, char *nqn); +int nvme_auth_generate_key(u8 *secret, struct nvme_dhchap_key **ret_key); + +#endif /* _NVME_AUTH_H */ -- cgit v1.2.3 From b61775d185a395f26fecdc7898e39de677a6c3dd Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Mon, 27 Jun 2022 11:52:03 +0200 Subject: nvme-auth: Diffie-Hellman key exchange support Implement Diffie-Hellman key exchange using FFDHE groups for NVMe In-Band Authentication. Signed-off-by: Hannes Reinecke Reviewed-by: Sagi Grimberg Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe --- include/linux/nvme-auth.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux/nvme-auth.h') diff --git a/include/linux/nvme-auth.h b/include/linux/nvme-auth.h index 354456826221..dcb8030062dd 100644 --- a/include/linux/nvme-auth.h +++ b/include/linux/nvme-auth.h @@ -29,5 +29,13 @@ struct nvme_dhchap_key *nvme_auth_extract_key(unsigned char *secret, void nvme_auth_free_key(struct nvme_dhchap_key *key); u8 *nvme_auth_transform_key(struct nvme_dhchap_key *key, char *nqn); int nvme_auth_generate_key(u8 *secret, struct nvme_dhchap_key **ret_key); +int nvme_auth_augmented_challenge(u8 hmac_id, u8 *skey, size_t skey_len, + u8 *challenge, u8 *aug, size_t hlen); +int nvme_auth_gen_privkey(struct crypto_kpp *dh_tfm, u8 dh_gid); +int nvme_auth_gen_pubkey(struct crypto_kpp *dh_tfm, + u8 *host_key, size_t host_key_len); +int nvme_auth_gen_shared_secret(struct crypto_kpp *dh_tfm, + u8 *ctrl_key, size_t ctrl_key_len, + u8 *sess_key, size_t sess_key_len); #endif /* _NVME_AUTH_H */ -- cgit v1.2.3