Cryptography
Maarten Bodewes's user avatar
Maarten Bodewes's user avatar
Maarten Bodewes's user avatar
Maarten Bodewes
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1,949 Answers

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12 votes
Accepted

Is SHA-1 secure when used to implement a PRNG

12 votes
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CBC-Mode Infinite Garble Extension

12 votes
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Why can't we use the first block of AES-CBC as MAC

12 votes

Smallest possible certificate for IoT device

12 votes
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How many codes can I safely generate using the same HMAC key?

11 votes

Are there any benefits to using ECB over CBC?

11 votes
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Definition of authenticity

11 votes
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Why are RSA ciphertexts different for the same plaintext?

11 votes
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The difference between MAC algorithms and what to use

11 votes
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AES256-CBC vs AES256-CTR in SSH

11 votes

How is the key shared in symmetric key cryptography?

11 votes
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Can I use MAC as CTR mode nonce, if my messages are non-repeating?

11 votes
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Use Initialization Vector as Additional Authenticated Data

11 votes

Is there something wrong with my decryption using key=9, mod 26?

11 votes
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What is Deterministic Authenticated Encryption?

11 votes
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Do all ciphers have equivalent decryption keys?

11 votes

Is HMAC needed for a SHA-3 based MAC?

11 votes

Converting normal alphabets to 64 bit plain text

11 votes

Can I base a public-key cryptosystem only on a hash algorithm?

11 votes

Who is responsible for ensuring the trustworthiness of certificate authorities?

11 votes
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TLS 1.2 is still secure or should we move to TLS 1.3?

10 votes
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Anatomy of an RSA private key

10 votes

How long to wait to feed hashing using SHA 256?

10 votes
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Building a combined encryption scheme from two encryption schemes that's secure if at least on of them is secure

10 votes

RSA: Is it secure to use the private key to encrypt and the public key to decrypt?

10 votes

Why do we implement a protocol?

10 votes
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Which of these 3 AES 128 symmetric encrypt/decrypt routines is most secure?

10 votes

Comparing Files: Is it better to use multiple hash algorithms or just one?

10 votes
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What is the algorithm behind PasswordDeriveBytes?

10 votes
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Is using RSA with SHA-1 considered as secure as HMAC-SHA-1?

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