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3

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Why do the subexponential algoriths for the DLP not work for the ECDLP?

elliptic-curves diffie-hellman discrete-logarithm elgamal-encryption

modified 2 days ago mhchia 3

4

votes

1

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Diffie-Hellman: difficulty of computing $g^{x^2}$ given $g^x$?

elliptic-curves diffie-hellman discrete-logarithm

modified Jul 24 at 22:24 Occams_Trimmer 3,169

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Show all the messages exchanged between Alice and Bob using the three-pass Diffie-Hellman protocol

diffie-hellman three-pass-protocol

asked Jul 23 at 20:51 Alfred Kaminski 35

2

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1

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Why is this authenticated Diffie–Hellman key exchange insecure?

diffie-hellman authentication key-exchange

modified Jul 23 at 18:17 beroal 211

11

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1

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198

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What is this problem called and is it hard? given $g^x$ output ($g^y, xy$)

diffie-hellman discrete-logarithm hardness-assumptions

answered Jul 22 at 19:57 poncho 111k

6

votes

1

answer

86

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Should I use self generated or predefined RFC 7919 DH groups?

diffie-hellman

modified Jul 22 at 14:04 wedi 161

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Has the ECDH protocol been designed just for key exchange or is it widely used for key exchange?

diffie-hellman

answered Jul 20 at 14:02 Maarten Bodewes♦ 72.3k

2

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0

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Curve25519 Attacks and Security

elliptic-curves diffie-hellman attack

modified Jul 17 at 10:53 Glorfindel 280

10

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Is it safe to reuse ECDH asymmetric keys for authentication?

elliptic-curves diffie-hellman authentication key-reuse

modified Jul 17 at 10:24 yoursunny 3

3

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1

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Is Diffie-Hellman post-quantum secure?

diffie-hellman post-quantum-cryptography

modified Jul 15 at 15:34 AleksanderRas 5,740

1

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1

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49

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MQV protocol and man-in-middle attack

public-key diffie-hellman key-exchange authenticated-encryption

answered Jul 14 at 14:24 arcaynia 101

7

votes

1

answer

502

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How do client and server agree on the values of p and g during DHE exchange?

diffie-hellman tls finite-field

modified Jul 14 at 7:19 dave_thompson_085 4,333

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1

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44

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I want to know the hardness of computing a or b given $g^{b^{-1}}$ and ab in cyclic groups with large prime order

diffie-hellman discrete-logarithm distinguisher

answered Jul 13 at 18:30 poncho 111k

3

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0

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Key strength comparison: symmetric key vs RSA/DH key

rsa public-key diffie-hellman symmetric key-size

modified Jul 8 at 16:15 AleksanderRas 5,740

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