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The Cyber Swiss Army Knife - a web app for encryption, encoding, compression and data analysis
aes  agent  base64  blowfish  certificate  compress  conversion  convert  converter  crypt  data  decode  decompress  decrypt  des  encode  encrypt  expressions  gzip  hash  hex  hexadecimal  json  md5  parser  regex  regular  security  sha1  tool  tools  url  user  x.509  xor 
17 hours ago by ndonohue
Hashing a File in Elixir
What is a hash function and how to calculate the hash strings and files in Elixir, using functions in :crypto module and Elixir Streams
elixir  encryption  md5  sha1 
5 weeks ago by eberfreitas
Which hashing algorithm is best for uniqueness and speed? - Software Engineering Stack Exchange
I tested some different algorithms, measuring speed and number of collisions.

I used three different key sets:

A list of 216,553 English words (in lowercase)
The numbers "1" to "216553" (think ZIP codes, and how a poor hash took down
216,553 "random" (i.e. type 4 uuid) GUIDs

For each corpus, the number of collisions and the average time spent hashing was recorded.

I tested:

DJB2a (variant using xor rather than )
FNV-1 (32-bit)
FNV-1a (32-bit)
Murmur2 (32-bit)
hash  cryptography  algorithms  programming  hashing  bestpractices  performance  murmur  md5  sha1 
10 weeks ago by vrobin
How to View a Certificate Fingerprint as SHA-256, SHA-1 or MD5 using OpenSSL
How to View a Certificate Thumbprint as SHA-256, SHA-1 or MD5 using OpenSSL How to View a Certificate Fingerprint as SHA-256, SHA-1 or MD5 using OpenSSL
openssl  x509  crypto  ssl  certificate  sha1  sha256  hash  fingerprint  commandline  solution 
11 weeks ago by kme
SHA-1 collision attacks are now actually practical and a looming danger | ZDNet
should switch to (in order of preference):

* SHA-512/256
* SHA3-256
* SHA-384
* Any other SHA2-family hash function as a last resort

"...unless they're storing passwords! In which case, they should switch to (in order of preference):

* Argon2id with memory >= 32MiB, >= 2 rounds, and >= 2 parallelism
* scrypt / yescrypt with memory >= 32 MiB, >= 4 rounds, and >= 1 parellelism
* bcrypt (for PHP devs, password_hash() and password_verify() does the trick)
* PBKDF2-SHA512 with 85,000 iterations as a last resort

"But SHA1 should no longer be used anymore. No excuses," Arciszewski
sha1  cracking  crypto  hashing  algorithms  advice 
may 2019 by kme - Home is a community recovering password from submitted hashes.
crack  cracking  database  hash  password  recovery  repository  md5  sha1 
february 2019 by plaxx
Check and verify md5/sha1/sha256 checksums for MacOS X when I download files - nixCraft |
The solution is to check `uname -s` == "Darwin" and use `shasum -a 1` instead of `sha1sum`, which only exists on Linux
mac  osx  macos  security  checksum  hash  sha1  workaround  solution 
january 2019 by kme

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