1KCAPI_CIPHER_ENCRYPT(3)      Programming Interface     KCAPI_CIPHER_ENCRYPT(3)
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NAME

6       kcapi_cipher_encrypt_aio - encrypt data (asynchronous one shot)
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SYNOPSIS

9       int32_t kcapi_cipher_encrypt_aio(struct kcapi_handle * handle,
10                                        struct iovec * iniov,
11                                        struct iovec * outiov,
12                                        uint32_t iovlen, const uint8_t * iv,
13                                        int access);
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ARGUMENTS

16       handle
17           [in] cipher handle
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19       iniov
20           [in] head of scatter-gather list array holding the plaintext
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22       outiov
23           [out] head of scatter-gather list of the destination buffers filled
24           with ciphertext
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26       iovlen
27           [in] number of scatter-gather list entries
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29       iv
30           [in] IV to be used for cipher operation
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32       access
33           [in] kernel access type (KCAPI_ACCESS_HEURISTIC - use internal
34           heuristic for fastest kernel access; KCAPI_ACCESS_VMSPLICE - use
35           vmsplice access; KCAPI_ACCESS_SENDMSG - sendmsg access)
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DESCRIPTION

38       The individual scatter-gather list entries are processed with separate
39       invocations of the the given cipher.
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41       The memory should be aligned at the page boundary using
42       posix_memalign(sysconf(_SC_PAGESIZE)), If it is not aligned at the page
43       boundary, the vmsplice call may not send all data to the kernel.
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45       The IV buffer must be exactly kcapi_cipher_ivsize bytes in size.
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47       return number of bytes encrypted upon success; a negative errno-style
48       error code if an error occurred
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AUTHOR

51       Stephan Mueller <smueller@chronox.de>
52           Author.
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55libkcapi Manual 1.1.4            February 2019         KCAPI_CIPHER_ENCRYPT(3)
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