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Feb
3
comment Computing p and q from private key
The algorithm in the NIST document is clear to me except for step 2. How does one calculate $r$? Is brute force the only option?
May
27
comment Is RSA key size the size of private key exponent in public key encryption?
This question appears to be off-topic because it is about cryptography and doesn't include a programming problem.
Jan
6
comment Digital Signature with Encryption
This question appears to be off-topic because it is about security or cryptography and doesn't include a programming problem.
Jul
31
comment Derive a key from public data using a secret master key
@RickyDemer That's interesting to know. From an implementation perspective, I have reasons why my design is preferable to HKDF. If you would be willing to add an answer with some additional details it would be very helpful to me.
Jul
31
comment Derive a key from public data using a secret master key
@CodesInChaos I've been told it's 64 bits, so that's comfortably smaller than 16 bytes.
Jul
31
comment Derive a key from public data using a secret master key
@CodesInChaos Sorry, I confused one RFC with another in my mind. My comments were probably more applicable to key derivation schemes such as those in PKCS #5.
Apr
21
comment Keys required for cryptography
+1 Excellent answer.