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support encryption method #16

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3 changes: 2 additions & 1 deletion README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,6 @@ OR download from github and place in ./node_modules
### Usage



```js
var keygen = require('ssh-keygen');
var fs = require('fs');
Expand Down Expand Up @@ -69,6 +68,8 @@ The key's randomart image is:
* destroy, destroy the key files once they have been read, defaults false
* comment, the comment that should be embedded into the key, defaults empty
* password, the password for the key, defaults empty
* encryption, Supports all other encrytpions by default rsa
* size , the bit size for the encryption, by default the recommended size for the encryption specified

### Note

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23 changes: 21 additions & 2 deletions src/ssh-keygen.js
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Expand Up @@ -53,11 +53,30 @@ function ssh_keygen(location, opts, callback){

var pubLocation = location+'.pub';
if(!opts.comment) opts.comment = '';
if(!opts.encryption) opts.encryption='rsa';
if(!opts.password) opts.password = '';
if(!opts.size) opts.size = '2048';
if(!opts.size) {
switch(opts.encryption){
case 'rsa': opts.size = '2048';break;
case 'dsa': opts.size = '1024';break;
case 'ecdsa': opts.size = '256';break;
case 'ed25519': opts.size = '256';break;
default: opts.size='2048';opts.encryption='rsa';
}
}
else{
switch(opts.encryption){
case 'rsa': if (!(['1024','2048'].indexOf(opts.size)>=0)) opts.size = '2048';break;
case 'dsa': if (!(['1024'].indexOf(opts.size)>=0)) opts.size = '1024';break;
case 'ecdsa': if (!(['256','384','521'].indexOf(opts.size)>=0)) opts.size = '521'; break;
case 'ed25519':if (!(['256'].indexOf(opts.size)>=0)) opts.size = '256';break;
default: opts.size='2048'; opts.encryption='rsa';
}
}


var keygen = spawn(binPath(), [
'-t','rsa',
'-t', opts.encryption,
'-b', opts.size,
'-C', opts.comment,
'-N', opts.password,
Expand Down