NAME

       kcapi_md_hmac_sha384 - HMAC SHA-384 keyed message digest on one buffer

SYNOPSIS

       ssize_t kcapi_md_hmac_sha384(const uint8_t * key, uint32_t keylen, const uint8_t * in, size_t inlen,
                                    uint8_t * out, size_t outlen);

ARGUMENTS

       key
           [in] buffer with HMAC key

       keylen
           [in] length of HMAC key buffer

       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 convenience function, a keyed 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 keyed message digest.

       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.

COPYRIGHT

libkcapi Manual 1.4.0                             February 2022                          KCAPI_MD_HMAC_SHA384(3)