1 files changed, 92 insertions, 0 deletions
diff --git a/node_modules/sshpk/lib/ed-compat.js b/node_modules/sshpk/lib/ed-compat.js
new file mode 100644
index 0000000..70732e1
--- /dev/null
+++ b/node_modules/sshpk/lib/ed-compat.js
@@ -0,0 +1,92 @@
+// Copyright 2015 Joyent, Inc.
+
+module.exports = {
+	Verifier: Verifier,
+	Signer: Signer
+};
+
+var nacl = require('tweetnacl');
+var stream = require('stream');
+var util = require('util');
+var assert = require('assert-plus');
+var Buffer = require('safer-buffer').Buffer;
+var Signature = require('./signature');
+
+function Verifier(key, hashAlgo) {
+	if (hashAlgo.toLowerCase() !== 'sha512')
+		throw (new Error('ED25519 only supports the use of ' +
+		    'SHA-512 hashes'));
+
+	this.key = key;
+	this.chunks = [];
+
+	stream.Writable.call(this, {});
+}
+util.inherits(Verifier, stream.Writable);
+
+Verifier.prototype._write = function (chunk, enc, cb) {
+	this.chunks.push(chunk);
+	cb();
+};
+
+Verifier.prototype.update = function (chunk) {
+	if (typeof (chunk) === 'string')
+		chunk = Buffer.from(chunk, 'binary');
+	this.chunks.push(chunk);
+};
+
+Verifier.prototype.verify = function (signature, fmt) {
+	var sig;
+	if (Signature.isSignature(signature, [2, 0])) {
+		if (signature.type !== 'ed25519')
+			return (false);
+		sig = signature.toBuffer('raw');
+
+	} else if (typeof (signature) === 'string') {
+		sig = Buffer.from(signature, 'base64');
+
+	} else if (Signature.isSignature(signature, [1, 0])) {
+		throw (new Error('signature was created by too old ' +
+		    'a version of sshpk and cannot be verified'));
+	}
+
+	assert.buffer(sig);
+	return (nacl.sign.detached.verify(
+	    new Uint8Array(Buffer.concat(this.chunks)),
+	    new Uint8Array(sig),
+	    new Uint8Array(this.key.part.A.data)));
+};
+
+function Signer(key, hashAlgo) {
+	if (hashAlgo.toLowerCase() !== 'sha512')
+		throw (new Error('ED25519 only supports the use of ' +
+		    'SHA-512 hashes'));
+
+	this.key = key;
+	this.chunks = [];
+
+	stream.Writable.call(this, {});
+}
+util.inherits(Signer, stream.Writable);
+
+Signer.prototype._write = function (chunk, enc, cb) {
+	this.chunks.push(chunk);
+	cb();
+};
+
+Signer.prototype.update = function (chunk) {
+	if (typeof (chunk) === 'string')
+		chunk = Buffer.from(chunk, 'binary');
+	this.chunks.push(chunk);
+};
+
+Signer.prototype.sign = function () {
+	var sig = nacl.sign.detached(
+	    new Uint8Array(Buffer.concat(this.chunks)),
+	    new Uint8Array(Buffer.concat([
+		this.key.part.k.data, this.key.part.A.data])));
+	var sigBuf = Buffer.from(sig);
+	var sigObj = Signature.parse(sigBuf, 'ed25519', 'raw');
+	sigObj.hashAlgorithm = 'sha512';
+	return (sigObj);
+};