1KCAPI_AEAD_GETDATA_I(3)      Programming Interface     KCAPI_AEAD_GETDATA_I(3)
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NAME

6       kcapi_aead_getdata_input - get the pointers into input buffer
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SYNOPSIS

9       void kcapi_aead_getdata_input(struct kcapi_handle * handle,
10                                     uint8_t * encdata, uint32_t encdatalen,
11                                     int enc, uint8_t ** aad,
12                                     uint32_t * aadlen, uint8_t ** data,
13                                     uint32_t * datalen, uint8_t ** tag,
14                                     uint32_t * taglen);
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ARGUMENTS

17       handle
18           [in] cipher handle
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20       encdata
21           [in] data buffer returned by the encryption operation
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23       encdatalen
24           [in] size of the encryption data buffer
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26       enc
27           [in] does output buffer hold encryption or decryption result?
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29       aad
30           [out] AD buffer pointer; when set to NULL, no data pointer is
31           returned
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33       aadlen
34           [out] length of AD; when aad was set to NULL, no information is
35           returned
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37       data
38           [out] pointer to output buffer from AEAD encryption operation when
39           set to NULL, no data pointer is returned
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41       datalen
42           [out] length of data buffer; when data was set to NULL, no
43           information is returned
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45       tag
46           [out] tag buffer pointer; when set to NULL, no data pointer is
47           returned
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49       taglen
50           [out] length of tag; when tag was set to NULL, no information is
51           returned
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DESCRIPTION

54       This function is a service function to the consumer to locate the right
55       ciphertext buffer offset holding the authentication tag. In addition,
56       it provides the consumer with the length of the tag and the length of
57       the ciphertext.
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AUTHOR

60       Stephan Mueller <smueller@chronox.de>
61           Author.
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64libkcapi Manual 1.1.4            February 2019         KCAPI_AEAD_GETDATA_I(3)
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