NAME

       kcapi_md_digest - calculate message digest on buffer (one-shot)

SYNOPSIS

       ssize_t kcapi_md_digest(struct kcapi_handle * handle, const uint8_t * in, size_t inlen,
                               uint8_t * out, size_t outlen);

ARGUMENTS

       handle
           [in] cipher handle

       in
           [in] buffer with input data

       inlen
           [in] length of input buffer

       out
           [out] buffer for message digest

       outlen
           [in] length of out

DESCRIPTION

       With this one-shot function, a message digest of the given buffer is generated. The output
       buffer must be allocated by the caller and have at least the length of the message digest
       size for the chosen message digest.

       The message digest handle must have been initialized, potentially by also setting the key
       using the generic message digest API functions.

       The input buffer can be at most INT_MAX in size.

       return size of message digest upon success; -EIO - data cannot be obtained; -ENOMEM -
       buffer is too small for the complete message digest, the buffer is filled with the
       truncated message digest

AUTHOR

       Stephan Mueller <smueller@chronox.de>
           Author.

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