produces ciphertext that, by itself, does not reveal information about the original message besides its length

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119 views

Attacks on elliptic-curve based cryptosystems through solving the Decisional Diffie-Hellman Problem with the Weil Pairing

Are there any examples of practical attacks on cryptosystems set over elliptic curves which utilize the easiness of DDH for certain choices of curves $E(\textbf{F}_q)$, and as such their lack of ...
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Does not using padding mean a lack of security?

I've read several texts which say that if the entire plaintext is a multiple of the block-size padding is not required (and not using padding would not mean a loss of security). I generally disagree ...
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Value of security through amiguity?

Let's say that you have a symmetric cipher which takes in an 8 bit plain text value and a key, and generates cipher text which can be decoded using the key to get the original plain text value. Since ...