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krb5_k_make_checksum_iov - Fill in a checksum element in IOV array (operates on opaque key)
=============================================================================================
..
.. c:function:: krb5_error_code krb5_k_make_checksum_iov(krb5_context context, krb5_cksumtype cksumtype, krb5_key key, krb5_keyusage usage, krb5_crypto_iov * data, size_t num_data)
..
:param:
**[in]** **context** - Library context
**[in]** **cksumtype** - Checksum type (0 for mandatory type)
**[in]** **key** - Encryption key for a keyed checksum
**[in]** **usage** - Key usage (see :data:`KRB5_KEYUSAGE` types)
**[inout]** **data** - IOV array
**[in]** **num_data** - Size of *data*
..
:retval:
- 0 Success; otherwise - Kerberos error codes
..
Create a checksum in the :data:`KRB5_CRYPTO_TYPE_CHECKSUM` element over :data:`KRB5_CRYPTO_TYPE_DATA` and :data:`KRB5_CRYPTO_TYPE_SIGN_ONLY` chunks in *data* . Only the :data:`KRB5_CRYPTO_TYPE_CHECKSUM` region is modified.
..
.. seealso::
:c:func:`krb5_k_verify_checksum_iov()`
.. note::
This function is similar to :c:func:`krb5_c_make_checksum_iov()` , but operates on opaque *key* .
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