New answers tagged sha256
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Hope this helps.....
Had to make slight modifications to the ParseHex() provided by Andrew Chow....
Headers needed are:
#include <string>
#include <cstring>
#include <assert.h> // assert() is used
Sha256 implementation in use is the one provided by Zedwood !!
First is the ParseHex function provided by Andrew Chow
std::string ParseHex(std::...
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My answer from this thread should help.
Had a lot of help from Andrew Chow..
I assume you already know the whole endian swapping mess in bitcoin...
Hope this helps you or anyone else.
Cheers!!!
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This thread should give you a direct working answer.
Had a lot of help from Andrew Chow..
Hope this helps you or anyone else.
Cheers!!!
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Alright so it's been quite a ride on this specific task but Thanks to Andrew Chow there's finally a working version that I know a lot of newbies and even intermediate developers & programmers will surely find useful.
Had to make slight modifications to the ParseHex() provided by Andrew Chow....
Headers needed are:
#include <string>
#include <...
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Note that I am analyzing your code as if I compiled it as is. That means anything that is commented out is ignored.
The first major issue is this line:
kk = GetBinaryStringFromHexString(char_ToString(hash2)); // convert data to binary format
The earlier final(hash); will have produced a char array filled with the SHA256 hash as binary data. Thus there ...
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This would probably be more suitable asked on Cryptography StackExchange.
I think that SHA256() is preferred over the _CTX, _Init, _Update, _Final functions. IIRC, these latter "low-level" functions are deprecated for external usage:
SHA256 low level APIs are deprecated for public use, but still ok for internal use. Source 1, Source 2.
The ...
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As noted above, you should take the first 80 bytes from the serialized block. Since this data is hex-encoded, and each byte takes two hex-digit to encode, a block header is 80 * 2 = 160 digits.
You will notice that a few fields are inverted, it's because they are represented in little-endian format. Once you double-sha256 this data, you'll find a hash with ...
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