SHA-256

以下のコードを実行

code:sha256.js

function addHtml() {

$('#container').append(`

<table border="1">

<tr>

<td>message</td>

<td><input type="text" id="message" onkeyup="calcSha256()" size="80" /></td>

</tr>

<tr>

<td>hash value</td>

<td><input type="text" id="hash" size="80" style="font-family:monospace;" /></td>

</tr>

</table>

`)

}

async function calcSha256() {

const message = new TextEncoder("utf-8").encode($("#message").val())

const hash = await crypto.subtle.digest("SHA-256", message)

$("#hash").val(buf2hexStr(hash))

}

function buf2hexStr(buffer) {

return Array.from(new Uint8Array(buffer))

.map(x => x.toString(16).padStart(2, "0"))

.join("")

}

(async () => {

await loadScript("./libs/jquery/jquery-3.6.3.min.js")

addHtml()

})()