Returns a random byte string that is cryptographically secure.Show details from next link. https://docs.aws.amazon.com/ja_jp/cli/latest/reference/kms/generate-random.html
| aws kms generate-random --number-of-bytes 128 |
| aws kms has 'utf8' codec can't decode byte error 揃 Issue #1855 揃 aws/aws-cli 揃 GitHub : http://github.com/aws/aws-cli/issues/1855 |