network profile
| bio | website | stackoverflow.com/users/3474 |
|---|---|---|
| location | United States | |
| age | 43 | |
| visits | member for | 1 year, 6 months |
| seen | Jun 4 at 19:27 | |
| stats | profile views | 8 |
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Jun 4 |
comment |
If RSA is limited to 117-200 bytes or so, is that a very limited use case? @user1361315 Exactly. |
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Jun 4 |
answered | If RSA is limited to 117-200 bytes or so, is that a very limited use case? |
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Mar 5 |
comment |
Should the secret key of Shamir's secret-sharing algorithm be interpreted byte by byte? I would also note that there have been some protocols suggested for avoiding attacks by malicious shareholders, where they try to get other share-holders' keys but withhold their own, but I haven't seen any that are bullet-proof. Maybe you could digitally sign shares when they are issued? |
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Mar 5 |
comment |
Should the secret key of Shamir's secret-sharing algorithm be interpreted byte by byte? I don't know a lot about it either, so I will offer my opinion (based on having implemented SSS myself) rather than trying to give a real answer: I think that the reason bytes are commonly used in practice is that hard-coding the exponentiation and logarithm tables that are needed is easy, fast, and compact. However, it does limit the number of shares. If you are able to use a "big integer" library to compute the necessary powers and logarithms at runtime, it seems like performance would be adequate for a lot practical applications. |
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Mar 5 |
comment |
Should the secret key of Shamir's secret-sharing algorithm be interpreted byte by byte? A shareholder can tamper with bytes, but not larger integers? I don't understand the point of your question. |
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Nov 24 |
awarded | Yearling |
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Aug 2 |
comment |
Aes encryption -The relevance of static matrix in mixcolumns operation Not a programming problem. Flagged to move to crypto. |
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Jun 26 |
answered | Asymmetric algorithm to generate compact unique messages that can be validated |
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Apr 1 |
awarded | Editor |
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Apr 1 |
revised |
How secure is AES-256? added 274 characters in body |
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Apr 1 |
answered | How secure is AES-256? |
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Apr 1 |
comment |
How secure is AES-256? There's no cipher called "AES-256-SHA". The SHA refers to the hash algorithm used in the HMAC by TLS to protect data integrity. |
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Jan 13 |
answered | How can one securely generate an asymmetric key pair from a short passphrase? |
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Dec 13 |
awarded | Teacher |
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Dec 10 |
answered | How do I solve this RSA instance for m? |
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Nov 24 |
awarded | Supporter |
