1KCAPI_AKCIPHER_STREA(3)      Programming Interface     KCAPI_AKCIPHER_STREA(3)
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NAME

6       kcapi_akcipher_stream_init_sgn - start an signing operation (stream)
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SYNOPSIS

9       ssize_t kcapi_akcipher_stream_init_sgn(struct kcapi_handle * handle,
10                                              struct iovec * iov,
11                                              size_t iovlen);
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ARGUMENTS

14       handle
15           [in] cipher handle
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17       iov
18           [in] scatter/gather list with data to be signed. This is the
19           pointer to the first iov entry if an array of iov entries is
20           supplied. See sendmsg(2) for details on how iov is to be used. This
21           pointer may be NULL if no data to be signed is available at the
22           point of the call.
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24       iovlen
25           [in] number of scatter/gather list elements. If iov is NULL, this
26           value must be zero.
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DESCRIPTION

29       A stream signing operation is started with this call. Multiple
30       successive kcapi_akcipher_stream_update function calls can be invoked
31       to send more plaintext data to be signed. The last invocation to supply
32       data must be done with kcapi_akcipher_stream_update_last. The kernel
33       buffers the input until kcapi_akcipher_stream_op picks up the signed
34       data. Once plaintext is signed during the kcapi_cipher_stream_op it is
35       removed from the kernel buffer.
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37       The function calls of kcapi_akcipher_stream_update and
38       kcapi_akcipher_stream_op can be mixed, even by multiple threads of an
39       application.
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41       return number of bytes sent to the kernel upon success; a negative
42       errno-style error code if an error occurred
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AUTHOR

45       Stephan Mueller <smueller@chronox.de>
46           Author.
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49libkcapi Manual 1.4.0              July 2023           KCAPI_AKCIPHER_STREA(3)
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