Henrick Hellström

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2,521 reputation

1311

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63 Answers

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12	Why does a broken hash function undermine an HMAC?
7	Can I use a one time pad key twice with random plaintext?
7	Is compressing data prior to encryption necessary to reduce plaintext redundancy?
7	How big an RSA key is considered secure today?
7	Rijndael vs. Serpent vs. Twofish: General comparison

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2,521 Reputation

+10	Generate fixed length cipher text from arbitrary length plaintext
+20	Is there a way to do fair exchange between two parties who don't trust each other?
+20	Does knowledge of original file size provide a cryptographic weakness?
+10	What does $(\mathbb{Z}_n^*)^2$ mean?

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9 Questions

votes activity newest

6	Solving hard problems in $\mathbb Z_{p}^{*}$ when $\mathbb p$ is close to $\mathbb 2^{n}$
6	Are there any authoritative definitions of “key stretching”?
2	DLP based crypto systems with multiple independent generators
2	Unique GCM/CCM initial counters without recipient side message counters
1	Predicate Encryption supporting disjunctions

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87 Tags

34 encryption × 9	24 hmac × 5
31 rsa × 8	20 one-time-pad × 4
30 cryptanalysis × 8	15 aes × 6
28 hash × 9	14 signature × 5
25 public-key × 7	13 random-number-generator × 3

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3 Accounts

	Cryptography	2,521 rep	1311
	Stack Overflow	1,218 rep	39
	IT Security	131 rep	2

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Nice Answer	Scholar
Critic	Student
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206 Votes Cast

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