CheckPasswordHash checks validation.

DecryptByGCM aes-gcm key should be either 16, 24 or 32 bytes.

DummyBinary returns dummy data.

EncryptByGCM aes-gcm key should be either 16, 24 or 32 bytes.

HashPassword returns password hash.

Random returns random string with random.Alphanumeric.

RandomWithoutConfusable returns random string with avoiding confusable characters.