PBKDF2 KEM.
=> https://datatracker.ietf.org/doc/html/rfc2898 RFC 2898, PBKDF2

<<    [schemas/kem-pbkdf2.tcl]

Key wrapping algorithm may be one of:
[cm/keywrap/xchapoly], [cm/keywrap/kexp15],
depending on the hash chosen.
