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How do you create a random string that's suitable for a session ID in PostgreSQL?
...
Note that this returns strings over the "hex digits alphabet" {0..9,a..f} only. May not be sufficient -- depends on what you want to do with them.
– Laryx Decidua
Jul 13 '12 at 13:40
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git: How to diff changed files versus previous versions after a pull?
...st version of the file" - the commit "ID" (SHA1 hash) is that 40-character hex right at the top of every entry in the output of git log. It's the hash for the entire commit, not for a given file. You don't really ever need more - if you want to diff just one file across the pull, do
git diff HEAD@{...
How to display gpg key details without importing it?
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To get the key IDs (8 bytes, 16 hex digits), this is the com
Can a JSON value contain a multiline string
...aracter-except-"-or-\-or-control-character
\"
\\
\/
\b
\f
\n
\r
\t
\u four-hex-digits
Newlines are "control characters" so, no, you may not have a literal newline within your string. However you may encode it using whatever combination of \n and \r you require.
The JSONLint tool confirms that you...
How can I hash a password in Java?
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You may want to be a bit wary of byte to hex conversions with BigInteger: leading zeros are removed. That's ok for quick debug, but I have seen bugs in production code due to that effect.
– Thomas Pornin
May 19 '10 at 12:21
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Literal suffix for byte in .NET?
... SB is two-fold.
One, the B suffix is ambiguous if you're writing in hexadecimal (what
does 0xFFB mean?) and even if we had a solution for that, or another
character than 'B' ('Y' was considered, F# uses this) no one could
remember whether the default was signed or unsigned - .NET bytes ...
How to parse a string to an int in C++?
...her bases by setting the stream to the correct mode (e.g. ss << std::hex) before trying the conversion. But this means the caller must know a priori what base the number is -- and how can the caller possibly know that? The caller doesn't know what the number is yet. They don't even know that i...
How can I save my secret keys and password securely in my version control system?
...er_openssl script:
#!/bin/bash
SALT_FIXED=<your-salt> # 24 or less hex characters
PASS_FIXED=<your-passphrase>
openssl enc -base64 -aes-256-ecb -S $SALT_FIXED -k $PASS_FIXED
Similar for smudge_filter_open_ssl and diff_filter_oepnssl. See Gist.
Your repo with sensitive information s...
.rar, .zip files MIME Type
...x00
// http://en.wikipedia.org/wiki/RAR
if ($ext == '.rar' and bin2hex($bytes) == '526172211a0700') {
return TRUE;
}
// ZIP magic number: none, though PK\003\004, PK\005\006 (empty archive),
// or PK\007\008 (spanned archive) are common.
// http://en.wikipedia.org/w...
What's the difference between ASCII and Unicode?
...II tables show character codes as 0-127 but UTF-8 tables show the codes as hex and not integers. Is there a reason for this? Why don't UTF-X tables show 0-127/255/65535 versus 00-AF? Does this mean anything?
– wayofthefuture
Jun 16 '17 at 16:31
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