include/linux/nvme-auth.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright (c) 2021 Hannes Reinecke, SUSE Software Solutions
   4  */
   5
   6 #ifndef _NVME_AUTH_H
   7 #define _NVME_AUTH_H
   8
   9 #include <crypto/kpp.h>
  10
  11 struct nvme_dhchap_key {
  12         u8 *key;
  13         size_t len;
  14         u8 hash;
  15 };
  16
  17 u32 nvme_auth_get_seqnum(void);
  18 const char *nvme_auth_dhgroup_name(u8 dhgroup_id);
  19 const char *nvme_auth_dhgroup_kpp(u8 dhgroup_id);
  20 u8 nvme_auth_dhgroup_id(const char *dhgroup_name);
  21
  22 const char *nvme_auth_hmac_name(u8 hmac_id);
  23 const char *nvme_auth_digest_name(u8 hmac_id);
  24 size_t nvme_auth_hmac_hash_len(u8 hmac_id);
  25 u8 nvme_auth_hmac_id(const char *hmac_name);
  26
  27 struct nvme_dhchap_key *nvme_auth_extract_key(unsigned char *secret,
  28                                               u8 key_hash);
  29 void nvme_auth_free_key(struct nvme_dhchap_key *key);
  30 u8 *nvme_auth_transform_key(struct nvme_dhchap_key *key, char *nqn);
  31 int nvme_auth_generate_key(u8 *secret, struct nvme_dhchap_key **ret_key);
  32 int nvme_auth_augmented_challenge(u8 hmac_id, u8 *skey, size_t skey_len,
  33                                   u8 *challenge, u8 *aug, size_t hlen);
  34 int nvme_auth_gen_privkey(struct crypto_kpp *dh_tfm, u8 dh_gid);
  35 int nvme_auth_gen_pubkey(struct crypto_kpp *dh_tfm,
  36                          u8 *host_key, size_t host_key_len);
  37 int nvme_auth_gen_shared_secret(struct crypto_kpp *dh_tfm,
  38                                 u8 *ctrl_key, size_t ctrl_key_len,
  39                                 u8 *sess_key, size_t sess_key_len);
  40
  41 #endif /* _NVME_AUTH_H */