Re^2: Digest sha256 returns gibberish

I'm hashing in order to verify pre-existing hash values that were generated with C++. The process and each steps results are documented but I'm following along in perl. So whatever the result I get, should match the authors examples.

The following is the concatenated result:

800C28FCA386C7A227600B2FE50B7CAE11EC86D3BF1FBE471BE89827E19D72AA1D

Which needs to match the following string after hashing with sha256*:

8147786C4D15106333BF278D71DADAF1079EF2D2440A4DDE37D747DED5403592

I've tried with sha256_base64 and it doesn't match.

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Re^3: Digest sha256 returns gibberish by Athanasius (Archbishop) on Aug 08, 2012 at 04:51 UTC
Using the online SHA-256 hash calculator at http://www.xorbin.com/tools/sha256-hash-calculator, the hash of: `800C28FCA386C7A227600B2FE50B7CAE11EC86D3BF1FBE471BE89827E19D72AA1D` [download] is given as: `e2e4146a36e9c455cf95a4f259f162c353cd419cc3fd0e69ae36d7d1b6cd2c09` [download] which is the exact result returned by `Digest::SHA::sha256_hex`: `This is a hexdigest->e2e4146a36e9c455cf95a4f259f162c353cd419cc3fd0e69a +e36d7d1b6cd2c09` [download] Where did you get the expected result beginning `81477...`? Update 1: Same result at http://hash.online-convert.com/sha256-generator. Update 2: ++aitap for the solution below. Athanasius <°(((>< contra mundum	[reply] [d/l] [select]
Re^4: Digest sha256 returns gibberish by invalid_logic (Initiate) on Aug 08, 2012 at 05:09 UTC
This is what I'm following: `https://en.bitcoin.it/wiki/Wallet_import_format` The source code for the hex creation (see 'ToString') is here: `https://github.com/bitcoin/bitcoin/blob/master/src/bignum.h` As I'm just learning to program, I'm having trouble following the C++ code so instead trying to follow the wiki process. If they are concatenating the int(64) with something else, it's difficult for me to tell.	[reply] [d/l] [select]
Re^3: Digest sha256 returns gibberish by aitap (Curate) on Aug 08, 2012 at 07:33 UTC
You need to calculate sha256 on the binary form of this data, not on the hexademical string: `$ perl '-MDigest::SHA "sha256_hex"' -E'say sha256_hex(pack("H*","800C2 +8FCA386C7A227600B2FE50B7CAE11EC86D3BF1FBE471BE89827E19D72AA1D"))' 8147786c4d15106333bf278d71dadaf1079ef2d2440a4dde37d747ded5403592` [download] Sorry if my advice was wrong.	[reply] [d/l]


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