[cm/prv/] with Classic McEliece 6960-119 + X25519.
=> Classic McEliece
=> X25519
Concatenation of Classic McEliece 6960-119 and X25519 private keys.

    prv-mceliece6960119-x25519 {
        {field . {map} len=~}
        {field a {str} =mceliece6960119-x25519}
        {field v {bin} len=13980}
    }