Digital Bitbox01

[undeath]

The code in your second post seems irrelevant. That's about private key generation, not encryption.

The part from your first post is relevant. This is pbkdf2-hmac-sha512 (mode 12100) with 20480 iterations and a fixed salt "Digital Bitbox".

so your hash would look like
sha512:20480:RGlnaXRhbCBCaXRib3g=:[base64-encoded hash]