1KCAPI_PAD_IV(3)              Programming Interface             KCAPI_PAD_IV(3)
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NAME

6       kcapi_pad_iv - realign the IV as necessary for cipher
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SYNOPSIS

9       int kcapi_pad_iv(struct kcapi_handle * handle, const uint8_t * iv,
10                        uint32_t ivlen, uint8_t ** newiv,
11                        uint32_t * newivlen);
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ARGUMENTS

14       handle
15           [in] cipher handle
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17       iv
18           [in] current IV buffer
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20       ivlen
21           [in] length of IV buffer
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23       newiv
24           [out] buffer of aligned IV
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26       newivlen
27           [out] length of newly aligned IV
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DESCRIPTION

30       The function pads the least significant bits of the provided IV up to
31       the block size of the cipher with zeros. In case the provided IV is
32       longer than the block size, the least significant bits are truncated to
33       the block size.
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35       The function allocates memory for newiv in case the return code
36       indicates success. The consumer must free the memory after use.
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38       return 0 for success; a negative errno-style error code if an error
39       occurred
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AUTHOR

42       Stephan Mueller <smueller@chronox.de>
43           Author.
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46libkcapi Manual 1.4.0            January 2023                  KCAPI_PAD_IV(3)
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