manta function with piv signing

manta

#!/usr/bin/env bash

function manta {
	local alg=ecdsa-sha256
	local keyId=/$MANTA_USER/keys/$MANTA_KEY_ID
	local now=$(date -u "+%a, %d %h %Y %H:%M:%S GMT")
	local sig=$(echo "date: $now" | \
		    tr -d '\n' | \
		    ~/dev/buckets/node-sshpk-agent/sign)

	local path=$1
	shift
	curl -k -sS "$MANTA_URL$path" "$@" -H "date: $now"  \
	    -H "Authorization: Signature keyId=\"$keyId\",algorithm=\"$alg\",signature=\"$sig\""
}

sign

#!/usr/bin/node --no-deprecation

var assert = require('assert');
var agent = require('./');
var fs = require('fs');

var data = fs.readFileSync('/dev/stdin', 'utf8');

var client = new agent.Client();

var key;
client.listKeys(function (err, keys) {
    assert.ifError(err);

    keys.forEach(function (_key) {
        var comment = _key.comment;
        if (comment.split(' ')[0] === 'PIV_slot_9A') {
            key = _key;
        }
    });

    assert(key);

    client.sign(key, data, function (err, sig) {
        assert.ifError(err);
        console.log(sig.toString());
    });
});