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f047daed17
This does not change current behaviour as the driver currently verifies that the secret size is the same size as the length of the transformation hash. Co-developed-by: Akash Appaiah <Akash.Appaiah@dell.com> Signed-off-by: Akash Appaiah <Akash.Appaiah@dell.com> Signed-off-by: Mark O'Donovan <shiftee@posteo.net> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Keith Busch <kbusch@kernel.org>
44 lines
1.4 KiB
C
44 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2021 Hannes Reinecke, SUSE Software Solutions
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*/
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#ifndef _NVME_AUTH_H
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#define _NVME_AUTH_H
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#include <crypto/kpp.h>
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struct nvme_dhchap_key {
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size_t len;
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u8 hash;
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u8 key[];
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};
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u32 nvme_auth_get_seqnum(void);
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const char *nvme_auth_dhgroup_name(u8 dhgroup_id);
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const char *nvme_auth_dhgroup_kpp(u8 dhgroup_id);
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u8 nvme_auth_dhgroup_id(const char *dhgroup_name);
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const char *nvme_auth_hmac_name(u8 hmac_id);
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const char *nvme_auth_digest_name(u8 hmac_id);
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size_t nvme_auth_hmac_hash_len(u8 hmac_id);
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u8 nvme_auth_hmac_id(const char *hmac_name);
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u32 nvme_auth_key_struct_size(u32 key_len);
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struct nvme_dhchap_key *nvme_auth_extract_key(unsigned char *secret,
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u8 key_hash);
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void nvme_auth_free_key(struct nvme_dhchap_key *key);
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struct nvme_dhchap_key *nvme_auth_alloc_key(u32 len, u8 hash);
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struct nvme_dhchap_key *nvme_auth_transform_key(
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struct nvme_dhchap_key *key, char *nqn);
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int nvme_auth_generate_key(u8 *secret, struct nvme_dhchap_key **ret_key);
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int nvme_auth_augmented_challenge(u8 hmac_id, u8 *skey, size_t skey_len,
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u8 *challenge, u8 *aug, size_t hlen);
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int nvme_auth_gen_privkey(struct crypto_kpp *dh_tfm, u8 dh_gid);
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int nvme_auth_gen_pubkey(struct crypto_kpp *dh_tfm,
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u8 *host_key, size_t host_key_len);
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int nvme_auth_gen_shared_secret(struct crypto_kpp *dh_tfm,
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u8 *ctrl_key, size_t ctrl_key_len,
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u8 *sess_key, size_t sess_key_len);
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#endif /* _NVME_AUTH_H */
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