# MIT Kerberos Documentation

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# krb5_c_derive_prfplus - Derive a key using some input data (via RFC 6113 PRF+).

krb5_error_code krb5_c_derive_prfplus(krb5_context context, const krb5_keyblock *k, const krb5_data *input, krb5_enctype enctype, krb5_keyblock **out)

param

  [in] context - Library context

  [in] k - KDC contribution key

  [in] input - Input string

  [in] enctype - Output key enctype (or ENCTYPE_NULL )

  [out] out - Derived keyblock

This function uses PRF+ as defined in RFC 6113 to derive a key from another key and an input string. If enctype is ENCTYPE_NULL , the output key will have the same enctype as the input key.