Are there unreachable MD5 hashes?
93708
MD5 Hash outputs not produced
111070
Is it safe to use the hash of the data as the key to encrypt them?
20913
Why does `md5sum` not give the same hash as the Internet does?
5931
Why can't I reverse a hash to a possible input?
36526
encrypt and decrypt md5
54117
Can a file be maliciously changed in a way that maintains its original SHA-1 Hash?
84399
Why is plain-hash-then-encrypt not a secure MAC?
39496
What software can I use to decrypt a Mac OS X password hash?
72196
How is PBKDF2 so much better than normal Hashing or even using HMAC
35218
Are there any practical implementation of a homomorphic hashing or signature scheme?
128785
How can uniformity of hash functions (e.g. SHA-256) be proved?
52036
Expected known function, got 'MD5'
44347
How do you create "good" random md5 hashes in php?
33888
Are there MD5 collisions for inputs of different length?
101414
Errors that refer to a bunch of unresolved OpenSSL symbols that clearly exist?
13234
Cracking secret key of a MD5 hash?
76695
Password Hashing in 2013