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Oct
22
comment Memory hard password based key derivation functions?
Everything but your last paragraph is irrelevant: the question isn't why memory-hard functions are useful but how to design one based on Skein. The function you propose may or may not be relevant, but since you say nothing about it other than giving a link, your post does not answer the question at all. Please take a moment to review our guidelines on how to answer.
Oct
16
reviewed Leave Open Can a file encrypted with one tool be decrypted with different tool?
Oct
14
comment RSA Signature Verification Implementation on Cortex M0
We don't do library recommendations here, so I edited your question to remove that part. You could ask for existing libraries on Software Recommendations.
Oct
14
revised RSA Signature Verification Implementation on Cortex M0
removed the part asking for an existing implementation, which is off-topic
Oct
6
reviewed Leave Open Generating unbiased numbers with a biased six sided die?
Oct
5
reviewed Close ephemeral-ephemeral ECDH and MITM attack
Oct
3
reviewed Reviewed Why not to use curve over field of $p^m$ with $p > 2$ for ECDSA?
Oct
1
comment Encrypting a 160-bit plaintext into a 160 bit ciphertext with a 128-bit Block Cipher
I'm voting to close this question even though it is on-topic because it has also been posted on Computer Science and has been answered there. Please do not post the same question on multiple sites.
Oct
1
answered How can cryptographic signatures be somehow linked to a physical signature?
Sep
30
revised How can cryptographic signatures be somehow linked to a physical signature?
deleted 15 characters in body; edited tags; edited title
Sep
30
comment generate RSA public key having public modulus and exponent
The public key is the modulus and exponent. The tool you want to use probably needs a format that isn't the one you present in the question. But your question gives no clue as to what format you want. It's also not clear what you want to do in the first place. Encrypting files is pointless if you can't decrypt them. Who has the private key and what format can they decrypt? This determines what format you would encrypt in. Then, asymmetric cryptography isn't used to encrypt files, only to encrypt very small messages such as a single-use symmetric key used only to encrypt one file.
Sep
30
comment Why is GCM only usable for ciphers with a 128-bit block size?
For “what is it”, what reference materials (e.g. Wikipedia, the NIST specification) have you read, and what part don't you understand?
Sep
30
revised Why is GCM only usable for ciphers with a 128-bit block size?
removed fluff
Sep
27
comment Do we have to consider the cryptographic properties of the decryption, if we're only using the encryption?
I don't understand the question. Does decryption matter for what? Can we ignore decryption for what?
Sep
27
revised Do we have to consider the cryptographic properties of the decryption, if we're only using the encryption?
added 41 characters in body; edited tags
Sep
25
revised Is reverse NTRU still secure?
deleted 1 character in body
Sep
25
reviewed Leave Closed research on Encryption for master
Sep
24
comment How is a public/private key pair generated from a Diffe-Hellman key exchange?
There are plenty of different protocols. The protocol you describe uses a key pair to allow one party to encrypt data which only the other party can decrypt. DH isn't useful for that. It's useful for obtaining a shared secret key. I really can't explain all possible uses of cryptography in a comment or even in an answer. Rest assured that you will discover more protocols as the course progresses.
Sep
24
comment How is a public/private key pair generated from a Diffe-Hellman key exchange?
No, Alice does not encrypt her message with Bob's public key. That's what is done for encryption algorithms such as RSA. But Diffie-Hellman is a key exchange algorithm, not an encryption algorithm. DH isn't for doing asymmetric encryption or signature, it generates a shared secret. The shared secret can be used for encryption, but then it's symmetric encryption (e.g. with AES).
Sep
23
answered How is a public/private key pair generated from a Diffe-Hellman key exchange?