1KCAPI_KPP_SSGEN(3)           Programming Interface          KCAPI_KPP_SSGEN(3)
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NAME

6       kcapi_kpp_ssgen - generate a shared secret
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SYNOPSIS

9       ssize_t kcapi_kpp_ssgen(struct kcapi_handle * handle,
10                               const uint8_t * pubkey, size_t pubkeylen,
11                               uint8_t * ss, size_t sslen, int access);
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ARGUMENTS

14       handle
15           [in] cipher handle
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17       pubkey
18           [in] public key of peer that shall be used to generate the shared
19           secret with
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21       pubkeylen
22           [in] length of the public key buffer
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24       ss
25           [out] generated shared secret
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27       sslen
28           [in] length of key buffer
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30       access
31           [in] kernel access type (KCAPI_ACCESS_HEURISTIC - use internal
32           heuristic for fastest kernel access; KCAPI_ACCESS_VMSPLICE - use
33           vmsplice access; KCAPI_ACCESS_SENDMSG - sendmsg access)
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DESCRIPTION

36       return number of bytes returned by the shared secret generation
37       operation upon success; a negative errno-style error code if an error
38       occurred
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AUTHOR

41       Stephan Mueller <smueller@chronox.de>
42           Author.
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45libkcapi Manual 1.4.0            January 2023               KCAPI_KPP_SSGEN(3)
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