class Aws::S3::EncryptionV2::KmsCipherProvider

def validate_cek(content_encryption_schema)
  case content_encryption_schema
  when :aes_gcm_no_padding
    "AES/GCM/NoPadding"
  else
    raise ArgumentError, "Unsupported content_encryption_schema: #{content_encryption_schema}"
  end
end