PGP Questions [From hex to pem]

[NotATether]

As for the idea, do you think it would be useful?

For practical use? No because the normal way of generating private keys by hardware-provided entropy is much more secure than choosing the numbers yourself.

For demonstration purposes? Yes, as people here will finally get an idea of what's inside an RSA private key and how all the pieces fit together.

[BlackHatCoiner]

For practical use? No because the normal way of generating private keys by hardware-provided entropy is much more secure than choosing the numbers yourself.

When you say numbers you mean the prime numbers or the hex? Because both of them can be chosen randomly and not from the user.

[NotATether]

For practical use? No because the normal way of generating private keys by hardware-provided entropy is much more secure than choosing the numbers yourself.

When you say numbers you mean the prime numbers or the hex? Because both of them can be chosen randomly and not from the user.

I was referring to these primes:

Code:

modulus=INTEGER:<PRIME>
pubExp=INTEGER:<PRIME>
privExp=INTEGER:<PRIME>
p=INTEGER:<PRIME>
q=INTEGER:<PRIME>

As for the hex, as long as you generate it properly, I don't see how that can be insecure.

[BlackHatCoiner]

As I said, I never succeeded on what I firstly wanted on OP. What I did want, was to keep my PGP keys safe with a mnemonic. Although, I then sat down and questioned "Why should we carry that large base64 encoded string anyway? Why shouldn't we just encrypt and decrypt with mnemonics?".

So this is when I started this: [Open Source] Booknemonic - Convenience on digital signatures and encryption.

Why am I waking up this topic? I want to know from the people that helped me here, if it's the same thing. By that, I mean, is this way better than PGP? Am I missing something? Because it seems too simple to me, but by far better than the monstrous public key, PGP generates, such as this one:

Code:

-----BEGIN PGP PUBLIC KEY BLOCK-----
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HNdKTFehBfbCG1oAWRsvMH4MBQJasSRWAhsBAwsJDQUVCgkICwUWAgMBAAIeAQIX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=Sr1A
-----END PGP PUBLIC KEY BLOCK-----

(randomly taken from the forum)

I wanted to make encryption easier to be achieved from an ordinary human. I hope I did it.

[NotATether]

I wanted to make encryption easier to be achieved from an ordinary human. I hope I did it.

I haven't read the source code of your utility but from your description in the OP you did a good job at achieving what you set out to do. I can see this could have a good use case in reducing impersonation-of-people's-PGP-keys kind of scams where you give anybody a random signed message and they trust the fact that there is a signed message existing proves it's them while it could be from a different public key. Words that people can memorize would make these scam attempts more obvious.

Also you can use Mono to port your .NET program to macOS and Linux without changing the programming language.