3k views

### Salting when encrypting?

I was attending a database encryption session at a developers conference. The presenter (who was a published author on the subject) said that MS SQL Server did not support salted hashes in the ...
9k views

### What are KDF parameters in OpenSSL command-line utility for enc?

I refer to https://www.openssl.org/docs/manmaster/apps/enc.html and see that the only parameter for key derivation which I can set explicitly (not considering the obvious ...
1k views

### Can I dynamically calculate an appropriate number of iterations for PBKDF2 based on the system time, rather than using a fixed value?

Could you choose the number of PBKDF2 iterations based upon the system time? I've heard a few people recommend that the number of iterations for PBKDF2 should be doubled every two years (starting ...
1k views

### Security of non-standard use for AES-256-CTR?

I have a string secret that I would like to encrypt for storage in a Yubikey's second slot. These slots can be configured to store up to 38 characters that are later "typed" by the USB device acting ...
646 views

### Is there a difference between password and key?

I encrypt data with this command: openssl aes-256-cbc -a -salt -in C:\Users\User\secrets.txt -out C:\Users\User\secrets.txt.encs The program then asks that I... ...
706 views

### What is the encoding protocol for passphrase protected RSA private keys?

What is the protocol used to encode an RSA key protected with a passphrase? If I generate an RSA key with ssh-keygen -t rsa -b 4096 and do: ...
747 views

### AES-128-CBC padding size [closed]

I'm trying to figure out how padding works by seeing what happens when I try to encrypt a 16 byte file with AES-128-CBC. My understanding was if I encrypt a file of size, say, 28, then there would ...
494 views

### openssl encryption salt length

when i was reading the latest source code of openssl, i found openssl enc has an 8-byte (64-bit) salt length; because the same ...