decrypt a file stored by server side encryption of minio

Question

i'm trying to use server side encryption of files by minio (https://www.minio.io/), that is similar to aws s3. Before start to use it, i would to know which inverse function i can use to be able to decrypt a previously crypted file on file system, but i'm not able to understand how sse-c cryptografy is implemented and how to use the master key.

On docker i'm setting this variables on minio service:

  MINIO_ACCESS_KEY: "AAA"
  MINIO_SECRET_KEY: "BBBB"
  MINIO_SSE_MASTER_KEY: "my-minio-key:XXXXXXXXX"
  MINIO_SSE_AUTO_ENCRYPTION: "on"

with that and using https, all files uploaded to minio are encrypted on fs

can anyone help me to use openssl or aws cli to decrypt that files?