Tests and bug fixes

Author: ondralukes

src/formats/openssh.js

@@ -94,7 +94,7 @@ module.exports = {
         if(options.type === 'der'){
             return writer.buf
         } else {
-            return PRIVATE_OPENING_BOUNDARY + '\n' + utils.linebrk(buf.toString('base64'), 70) + '\n' + PRIVATE_CLOSING_BOUNDARY;
+            return PRIVATE_OPENING_BOUNDARY + '\n' + utils.linebrk(buf.toString('base64'), 70) + '\n' + PRIVATE_CLOSING_BOUNDARY + '\n';
         }
     },
 
@@ -202,7 +202,7 @@ module.exports = {
         if(options.type === 'der'){
             return writer.buf
         } else {
-            return 'ssh-rsa ' + buf.toString('base64') + ' ' + comment;
+            return 'ssh-rsa ' + buf.toString('base64') + ' ' + comment + '\n';
         }
     },
 
@@ -218,7 +218,17 @@ module.exports = {
             if (_.isString(data)) {
                 if(data.substring(0, 8) !== 'ssh-rsa ')
                     throw Error('Unsupported key format');
-                var pem = data.substring(8, data.indexOf(' ', 8))
+                let pemEnd = data.indexOf(' ', 8);
+
+                //Handle keys with no comment
+                if(pemEnd === -1){
+                    pemEnd = data.length;
+                } else {
+                    key.sshcomment = data.substring(pemEnd + 1)
+                        .replace(/\s+|\n\r|\n|\r$/gm, '');
+                }
+
+                const pem = data.substring(8, pemEnd)
                     .replace(/\s+|\n\r|\n|\r$/gm, '');
                 buffer = Buffer.from(pem, 'base64');
             } else {
@@ -235,7 +245,7 @@ module.exports = {
         const type = readOpenSSHKeyString(reader).toString('ascii');
 
         if(type !== 'ssh-rsa')
-            throw Error('Invalid key type');
+            throw Error('Invalid key type: '+ type);
 
         const e = readOpenSSHKeyString(reader);
         const n = readOpenSSHKeyString(reader);

test/keys/id_rsa

@@ -0,0 +1,16 @@
+-----BEGIN OPENSSH PRIVATE KEY-----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+-----END OPENSSH PRIVATE KEY-----

test/keys/id_rsa.pub

@@ -0,0 +1 @@
+ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAgQCCdY+EpDC/vPa335l751SBM8d5Lf4z4QZX4bc+DqTY9zVY/rmPGbTkCueKnIKApuOGMXJOaCwNH9wUftNt7T0foEwjl16uIC8m4hwSjjNL5TKqMVeySyv04oBuidv76u5yNiLC4J85lbmW3WAyYkTCbm/VJZAXNJuqCm7AVWmQMQ==

test/keys/id_rsa_comment

@@ -0,0 +1,16 @@
+-----BEGIN OPENSSH PRIVATE KEY-----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+-----END OPENSSH PRIVATE KEY-----

test/keys/id_rsa_comment.pub

@@ -0,0 +1 @@
+ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAgQCzdTuLRUgSrPcryCHruxV4zXQo+gv4yZAZH3BMjRdUxvmFXMPB9N+RsxKATah5BAnUD7P+bV08A0RCwqYH7j5bJ7Geh8JNWTJpGELgaptY+/gnffZfUx5NizTUNQwlkj98BP0K+rwtIO5FbTYzp/5vasAS2ocP5/HJ6RoGbHKMtw== ondra@ondralukes

test/tests.js

@@ -294,7 +294,10 @@ describe('NodeRSA', function () {
                 'pkcs8-private': {public: false, der: false, file: 'private_pkcs8.pem'},
                 'pkcs8-der': {public: false, der: true, file: 'private_pkcs8.der'},
                 'pkcs1-public': {public: true, der: false, file: 'public_pkcs1.pem'},
-                'pkcs8-public': {public: true, der: false, file: 'public_pkcs8.pem'}
+                'pkcs8-public': {public: true, der: false, file: 'public_pkcs8.pem'},
+
+                'openssh-public': {public: true, der: false, file: 'id_rsa.pub'},
+                'openssh-private': {public: false, der: false, file: 'id_rsa'}
             };
 
             describe('Good cases', function () {
@@ -483,6 +486,36 @@ describe('NodeRSA', function () {
                         })(format);
                     }
                 });
+
+                describe('OpenSSH keys', function () {
+                    /*
+                     * Warning!
+                     * OpenSSH private key contains unused 64bit value, this value is set by ssh-keygen,
+                     * but it's not used. NodeRSA does NOT store this value, so importing and exporting key sets this value to 0.
+                     * This value is 0 in test files, so the tests pass.
+                     */
+                    it('key export should preserve key data including comment', function(){
+                        const opensshPrivateKey = fs.readFileSync(keysFolder + 'id_rsa_comment').toString();
+                        const opensshPublicKey = fs.readFileSync(keysFolder + 'id_rsa_comment.pub').toString();
+                        const opensshPriv = new NodeRSA(opensshPrivateKey);
+                        const opensshPub = new NodeRSA(opensshPublicKey);
+
+                        assert.equal(
+                            opensshPriv.exportKey('openssh-private'),
+                            opensshPrivateKey
+                        );
+
+                        assert.equal(
+                            opensshPriv.exportKey('openssh-public'),
+                            opensshPublicKey
+                        );
+
+                        assert.equal(
+                            opensshPub.exportKey('openssh-public'),
+                            opensshPublicKey
+                        );
+                    });
+                })
             });
 
             describe('Bad cases', function () {