[cm/pub/] with GOST R 34.10-2012 ([cm/signed/gost3410]).
Public key must be in "BE(X)||BE(Y)" format.
Public key's fingerprint should be calculated using big-endian Streebog-256.

Its /data/pub contents:
    pub-gost3410-256A {
        {field . {map}}
        {field a {str} =gost3410-256A}
        {field v {bin} len=64}
    }
    
    pub-gost3410-512C {
        {field . {map}}
        {field a {str} =gost3410-512C}
        {field v {bin} len=128}
    }