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A comment on Show HN: Write a private diary using good old email. Parent comment

Re:Show HN: Write a private diary using good old email by wizzwizz4 on Tuesday January 14, 2020 @11:51AM (#22046605)
Encrypt it with a symmetric key, and then encrypt the symmetric key separately with each of your friends' public keys.
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Re:Show HN: Write a private diary using good old email by topmonk on Tuesday January 14, 2020 @10:45PM (#22051605)
But then if just one of your friend's private key is stolen, you lose control of everything you wrote, past or present.
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Re:Show HN: Write a private diary using good old email by wizzwizz4 on Thursday January 16, 2020 @05:02AM (#22063120)
Well, yeah. That's what sharing the things you've written with them is.
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Re:Show HN: Write a private diary using good old email by topmonk on Friday January 17, 2020 @12:02AM (#22072026)
Well, there are algorithms that support perfect forward security.... but nah
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Re:Show HN: Write a private diary using good old email by wizzwizz4 on Saturday January 18, 2020 @08:16AM (#22084261)
This is a good argument for not rolling your own.
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