Podcast #128: We chat with Kent C Dodds about why he loves React and discuss what life was like in the dark days before Git. Listen now.
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Cryptography is the practice and study of logical means used to achieve information confidentiality, integrity and authenticity. It covers, among other things, encryption (making some data unreadable except for those who know a given secret element, called a key), data hashing (in particular for password storage) and digital signatures (provable integrity and authenticity with non-repudiation).

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. (For messages encrypted using public-key cryptography, one could simply include the public key, or a hash of it, in the encrypted message.) Check the key at the beginning of the decryption, by …
answered Jul 31 '12 by Ilmari Karonen
5
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The user and campaign IDs seem to be hexadecimal numbers (of 32 and 48 bits respectively). I see no obvious structure in them — they're definitely not printable ASCII byte strings. The 24-char "resu …
answered Jun 29 '12 by Ilmari Karonen
10
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The important feature of a password salt (as Terry Chia correctly notes) is that it should be globally unique: no two password hashes (even on different sites) should ever have the same salt. Using …
answered Sep 1 '13 by Ilmari Karonen
6
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If this is indeed a simple password hash, we might be able to use Google to crack it. Base64 is hard to search for, though, with all those slashes and plus signs, so let's first convert that hash int …
answered Oct 20 '11 by Ilmari Karonen