Cryptography Stack Exchange

0 votes

0 answers

35 views

Value to proving that breaking a cipher requires large amounts of plaintext

block-cipher provable-security

GEG

432

modified 11 hours ago

2 votes

2 answers

49 views

What is the difference between AES-CCM8 mode and AES-CCM mode?

encryption aes block-cipher ccm

Maarten Bodewes♦

84.5k

modified 2 days ago

1 vote

1 answer

36 views

How do different types of ciphers relate to each other?

encryption block-cipher stream-cipher classical-cipher

JAAAY

268

modified May 10 at 16:45

0 votes

0 answers

39 views

Post-quantum security of multiple-encryption with CTR mode of operation while keeping the IVs secret

block-cipher post-quantum-cryptography initialization-vector ctr meet-in-the-middle-attack

phantomcraft

511

modified May 9 at 14:14

0 votes

0 answers

35 views

Which cipher is more secure TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA or TLS_RSA_WITH_AES_256_GCM_SHA384?

encryption block-cipher tls

dawklrw

19

asked May 8 at 11:35

1 vote

0 answers

36 views

What would be the consequences of using a IV smaller than the block size in CBC encryption?

encryption block-cipher cbc initialization-vector blocksize

phantomcraft

511

asked May 7 at 18:24

1 vote

0 answers

30 views

CBC MAC forgery

block-cipher mac cbc-mac

DannyNiu

6,541

modified May 5 at 13:26

1 vote

0 answers

91 views

Show that block cipher with CTR is a good PRNG

block-cipher random-number-generator chosen-plaintext-attack ctr

Awerde

123

asked May 1 at 9:45

1 vote

1 answer

90 views

What kind of assumptions usually go into the design of block ciphers?

block-cipher provable-security hardness-assumptions

forest♦

12.9k

modified Apr 27 at 20:12

4 votes

1 answer

192 views

Using a PRP $\pi: \{0,1\}^{16} \to \{0,1\}^{16}$ to construct an ideal cipher

block-cipher provable-security pseudo-random-function pseudo-random-permutation

forest♦

12.9k

modified Apr 16 at 3:15

1 vote

1 answer

45 views

Does inserting an entry of 32/64-bits into a Feistel S-box would consume the same cycles per byte as inserting a single byte?

block-cipher s-boxes feistel-network

poncho

131k

answered Apr 14 at 3:31

0 votes

0 answers

46 views

Security of Blowfish with secret S-boxes

block-cipher s-boxes feistel-network blowfish

phantomcraft

511

modified Apr 11 at 0:12

0 votes

1 answer

41 views

If converting a SPN Block Cipher to a version with larger block size, should its S-boxes be enlarged too?

block-cipher s-boxes blocksize

LightBit

1,322

modified Apr 10 at 17:04

1 vote

1 answer

39 views

16-bit entry in a S-Box of a SPN block cipher: Would it have the same speed/performance than a 8-bit entry?

block-cipher s-boxes spn

Daniel S

9,576

modified Apr 6 at 9:41

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Value to proving that breaking a cipher requires large amounts of plaintext

What is the difference between AES-CCM8 mode and AES-CCM mode?

How do different types of ciphers relate to each other?

Post-quantum security of multiple-encryption with CTR mode of operation while keeping the IVs secret

Which cipher is more secure TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA or TLS_RSA_WITH_AES_256_GCM_SHA384?

What would be the consequences of using a IV smaller than the block size in CBC encryption?

CBC MAC forgery

Show that block cipher with CTR is a good PRNG

What kind of assumptions usually go into the design of block ciphers?

Using a PRP $\pi: \{0,1\}^{16} \to \{0,1\}^{16}$ to construct an ideal cipher

Does inserting an entry of 32/64-bits into a Feistel S-box would consume the same cycles per byte as inserting a single byte?

Security of Blowfish with secret S-boxes

If converting a SPN Block Cipher to a version with larger block size, should its S-boxes be enlarged too?

16-bit entry in a S-Box of a SPN block cipher: Would it have the same speed/performance than a 8-bit entry?

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