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Hash String via SHA-256 in Java
...tes(StandardCharsets.UTF_8));
byte[] digest = md.digest();
String hex = String.format("%064x", new BigInteger(1, digest));
System.out.println(hex);
}
}
In the snippet above, digest contains the hashed string and hex contains a hexadecimal ASCII string with left zero padding.
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Why are hexadecimal numbers prefixed with 0x?
Why are hexadecimal numbers prefixed as 0x ?
I understand the usage of the prefix but I don't understand the significance of why 0x was chosen.
...
Assembly code vs Machine code vs Object code?
...entation of machine code:
mov eax, 77
jmp anywhere
Machine code is pure hexadecimal code:
5F 3A E3 F1
I assume you mean object code as in an object file. This is a variant of machine code, with a difference that the jumps are sort of parameterized such that a linker can fill them in.
An assem...
int to hex string
I need to convert an int to hex string.
4 Answers
4
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Format numbers to strings in Python
...'Name: John, age: 35'
>>> i = 45
>>> 'dec: %d/oct: %#o/hex: %#X' % (i, i, i)
'dec: 45/oct: 055/hex: 0X2D'
>>> "MM/DD/YY = %02d/%02d/%02d" % (12, 7, 41)
'MM/DD/YY = 12/07/41'
>>> 'Total with tax: $%.2f' % (13.00 * 1.0825)
'Total with tax: $14.07'
>>&g...
why windows 7 task scheduler task fails with error 2147942667
...n dialogs
To get the relevant error message:
1) Convert 2147942667 to hex: 8007010B
2) Take last 4 digits (010B) and convert to decimal: 267
3) Run: net helpmsg 267
4) Result: "The directory name is invalid."
shar...
Java 256-bit AES Password-Based Encryption
... cipher is generated from decryption key and initialization vector
removed hex twiddling in lieu of org.apache.commons codec Hex routines
Some notes: This uses a 128 bit encryption key - java apparently won't do 256 bit encryption out-of-the-box. Implementing 256 requires installing some extra fil...
Secure random token in Node.js
...o').randomBytes(48, function(err, buffer) {
var token = buffer.toString('hex');
});
The 'hex' encoding works in node v0.6.x or newer.
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How to get a Color from hexadecimal Color String
I'd like to use a color from an hexa string such as "#FFFF0000" to (say) change the background color of a Layout.
Color.HSVToColor looks like a winner but it takes a float[] as a parameter.
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Random hash in Python
... +1 - surely this is better than my answer, can be used also like this: hex(random.getrandbits(128))[2:-1] this gives you same output as md5 hexdigest method.
– Jiri
Jun 11 '09 at 8:14
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