Why a flip a bin before hashing in this script?

up vote
2
down vote

favorite

From How can I make this PHP merkle root script recursive?

function binFlipByteOrder($string) {

    return implode('', array_reverse(str_split($string, 1)));

}

Why a flip?

edited 4 hours ago

Glorfindel

2381412

asked 13 hours ago

Nicolas Cantu

134

New contributor

add a comment |

up vote
2
down vote

favorite

From How can I make this PHP merkle root script recursive?

function binFlipByteOrder($string) {

    return implode('', array_reverse(str_split($string, 1)));

}

Why a flip?

edited 4 hours ago

Glorfindel

2381412

asked 13 hours ago

Nicolas Cantu

134

New contributor

add a comment |

up vote
2
down vote

favorite

From How can I make this PHP merkle root script recursive?

function binFlipByteOrder($string) {

    return implode('', array_reverse(str_split($string, 1)));

}

Why a flip?

edited 4 hours ago

Glorfindel

2381412

asked 13 hours ago

Nicolas Cantu

134

New contributor

From How can I make this PHP merkle root script recursive?

function binFlipByteOrder($string) {

    return implode('', array_reverse(str_split($string, 1)));

}

Why a flip?

blockchain php

edited 4 hours ago

Glorfindel

2381412

asked 13 hours ago

Nicolas Cantu

134

New contributor

edited 4 hours ago

Glorfindel

2381412

asked 13 hours ago

Nicolas Cantu

134

New contributor

edited 4 hours ago

Glorfindel

2381412

edited 4 hours ago

Glorfindel

2381412

edited 4 hours ago

Glorfindel

2381412

asked 13 hours ago

Nicolas Cantu

134

New contributor

asked 13 hours ago

Nicolas Cantu

134

asked 13 hours ago

Nicolas Cantu

134

New contributor

Nicolas Cantu is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment |

1 Answer
1

active

oldest

votes

up vote
3
down vote

accepted

Hashes are big endian by standard, and most computers use little endian, so it's probably just for convenience. See Why does the Bitcoin protocol use the little-endian notation?

answered 13 hours ago

JBaczuk

3,5741321

Ok thanks you! (I suspected the Lilliputians..)
– Nicolas Cantu
13 hours ago

haha they are alive and well in Bitcoin... :)
– JBaczuk
13 hours ago

Of course it's a little big part of Internet (Cohen) and a community story :) So they are well in Bitcoin :)
– Nicolas Cantu
4 hours ago

add a comment |

Your Answer

StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "308"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});

function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
noCode: true, onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});

}
});

Nicolas Cantu is a new contributor. Be nice, and check out our Code of Conduct.

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fbitcoin.stackexchange.com%2fquestions%2f81381%2fwhy-a-flip-a-bin-before-hashing-in-this-script%23new-answer', 'question_page');
}
);

Post as a guest

Name

Required, but never shown

1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

up vote
3
down vote

accepted

Hashes are big endian by standard, and most computers use little endian, so it's probably just for convenience. See Why does the Bitcoin protocol use the little-endian notation?

answered 13 hours ago

JBaczuk

3,5741321

Ok thanks you! (I suspected the Lilliputians..)
– Nicolas Cantu
13 hours ago

haha they are alive and well in Bitcoin... :)
– JBaczuk
13 hours ago

Of course it's a little big part of Internet (Cohen) and a community story :) So they are well in Bitcoin :)
– Nicolas Cantu
4 hours ago

add a comment |

up vote
3
down vote

accepted

Hashes are big endian by standard, and most computers use little endian, so it's probably just for convenience. See Why does the Bitcoin protocol use the little-endian notation?

answered 13 hours ago

JBaczuk

3,5741321

Ok thanks you! (I suspected the Lilliputians..)
– Nicolas Cantu
13 hours ago

haha they are alive and well in Bitcoin... :)
– JBaczuk
13 hours ago

Of course it's a little big part of Internet (Cohen) and a community story :) So they are well in Bitcoin :)
– Nicolas Cantu
4 hours ago

add a comment |

up vote
3
down vote

accepted

Hashes are big endian by standard, and most computers use little endian, so it's probably just for convenience. See Why does the Bitcoin protocol use the little-endian notation?

answered 13 hours ago

JBaczuk

3,5741321

Hashes are big endian by standard, and most computers use little endian, so it's probably just for convenience. See Why does the Bitcoin protocol use the little-endian notation?

answered 13 hours ago

JBaczuk

3,5741321

answered 13 hours ago

JBaczuk

3,5741321

answered 13 hours ago

JBaczuk

3,5741321

answered 13 hours ago

JBaczuk

3,5741321

Ok thanks you! (I suspected the Lilliputians..)
– Nicolas Cantu
13 hours ago

haha they are alive and well in Bitcoin... :)
– JBaczuk
13 hours ago

Of course it's a little big part of Internet (Cohen) and a community story :) So they are well in Bitcoin :)
– Nicolas Cantu
4 hours ago

add a comment |

Ok thanks you! (I suspected the Lilliputians..)
– Nicolas Cantu
13 hours ago

haha they are alive and well in Bitcoin... :)
– JBaczuk
13 hours ago

Of course it's a little big part of Internet (Cohen) and a community story :) So they are well in Bitcoin :)
– Nicolas Cantu
4 hours ago

Ok thanks you! (I suspected the Lilliputians..)
– Nicolas Cantu
13 hours ago

haha they are alive and well in Bitcoin... :)
– JBaczuk
13 hours ago

Of course it's a little big part of Internet (Cohen) and a community story :) So they are well in Bitcoin :)
– Nicolas Cantu
4 hours ago

add a comment |

Nicolas Cantu is a new contributor. Be nice, and check out our Code of Conduct.

draft saved

draft discarded

Nicolas Cantu is a new contributor. Be nice, and check out our Code of Conduct.

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

Post as a guest

Name

Required, but never shown

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

Name

Required, but never shown

Name

Required, but never shown

This page is only for reference, If you need detailed information, please check here

搜尋此網誌

Cfxtrjtrk