That is not rolling your own crypto. Rolling your own would be relying on your custom construction, not double encrypting and relying on the known construction for safety.
...Furthermore I'm confused as to why someone would do that. If you already have a safe way to encrypt your plaintext and you're the only one with both keys, why would you bother double encrypting? You gain absolutely nothing because it's redundant, and you lose performance.
What you're doing is tantamount to a weird sort of encoding that doesn't offer any benefit.
...Furthermore I'm confused as to why someone would do that. If you already have a safe way to encrypt your plaintext and you're the only one with both keys, why would you bother double encrypting? You gain absolutely nothing because it's redundant, and you lose performance.
What you're doing is tantamount to a weird sort of encoding that doesn't offer any benefit.