Bitcoin Forum
December 08, 2016, 08:19:29 AM *
News: To be able to use the next phase of the beta forum software, please ensure that your email address is correct/functional.
 
   Home   Help Search Donate Login Register  
Pages: « 1 2 3 4 5 [6] 7 »  All
  Print  
Author Topic: Electrum for Android  (Read 20715 times)
Jamie90
Newbie
*
Offline Offline

Activity: 4


View Profile
September 29, 2015, 07:17:49 PM
 #101

How do I sync the Electrum that is installed on my Windows PC with the one installed on my Android?

Also, how do I change my wallet on my Android?

Thanks in advance for any help.
1481185169
Hero Member
*
Offline Offline

Posts: 1481185169

View Profile Personal Message (Offline)

Ignore
1481185169
Reply with quote  #2

1481185169
Report to moderator
1481185169
Hero Member
*
Offline Offline

Posts: 1481185169

View Profile Personal Message (Offline)

Ignore
1481185169
Reply with quote  #2

1481185169
Report to moderator
Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here.
1481185169
Hero Member
*
Offline Offline

Posts: 1481185169

View Profile Personal Message (Offline)

Ignore
1481185169
Reply with quote  #2

1481185169
Report to moderator
shsmith
Jr. Member
*
Offline Offline

Activity: 34



View Profile
February 28, 2016, 04:35:55 AM
 #102

Electrum is now in Google Play as a regular APK.
Much easier to install and use than before.

https://play.google.com/store/apps/details?id=org.electrum.electrum
DuddlyDoRight
Full Member
***
Offline Offline

Activity: 233



View Profile WWW
February 28, 2016, 06:39:34 AM
 #103

I actually hear TEE is opening up for Android. This means wallets can run vitals isolated. There has been isolated keystore services a while too. They both use hardware TEE like ARM Trustzone. This is pretty hard to hack. Famous iphone hackers can't touch the kernel protection that uses it.

I have faith that one day this forum will get threads where people won't just repeat their previous posts or what others have already stated in the same thread. Also that people will stop acting like BTC is toy-money and start holding vendors accountable. Naive? Maybe.
sacko
Sr. Member
****
Offline Offline

Activity: 406



View Profile
March 04, 2016, 06:09:16 PM
 #104

Where can I get the new apk without google play?  (safe source?)
BitcoinNewsMagazine
Hero Member
*****
Offline Offline

Activity: 630



View Profile WWW
March 04, 2016, 08:01:14 PM
 #105

I actually hear TEE is opening up for Android. This means wallets can run vitals isolated. There has been isolated keystore services a while too. They both use hardware TEE like ARM Trustzone. This is pretty hard to hack. Famous iphone hackers can't touch the kernel protection that uses it.

Ledger Trustlets still only run on selected Samsung phones though.

DuddlyDoRight
Full Member
***
Offline Offline

Activity: 233



View Profile WWW
March 04, 2016, 09:22:09 PM
 #106

I actually hear TEE is opening up for Android. This means wallets can run vitals isolated. There has been isolated keystore services a while too. They both use hardware TEE like ARM Trustzone. This is pretty hard to hack. Famous iphone hackers can't touch the kernel protection that uses it.

Ledger Trustlets still only run on selected Samsung phones though.

Anything that's not vulnerable to published SMS and signing vulnerabilities have both the keystore, which is in the SDK for any app to use going back to older API versions, and the licensed TEE execution. Google is suppose to implement a non-licensed TEE service very soon and it'll only require updating the ROM on an older device.

This means anything you shouldn't be supporting you won't need to support. You could also just use keystore API which is hardware backed on pretty much everything with Android 4.1+ on it from the factory.

Hardware isolation even if just for keys is well worth the investment though, and will only take about 200 more lines of code.

I may make a fork to experiment with it. I believe Electrum uses Python and some framework for it's app.

I have faith that one day this forum will get threads where people won't just repeat their previous posts or what others have already stated in the same thread. Also that people will stop acting like BTC is toy-money and start holding vendors accountable. Naive? Maybe.
shsmith
Jr. Member
*
Offline Offline

Activity: 34



View Profile
March 05, 2016, 06:24:25 AM
 #107

Where can I get the new apk without google play?  (safe source?)
There is still a 2.6 beta APK here: http://download.electrum.org/beta/
sacko
Sr. Member
****
Offline Offline

Activity: 406



View Profile
March 05, 2016, 05:18:51 PM
 #108

Where can I get the new apk without google play?  (safe source?)
There is still a 2.6 beta APK here: http://download.electrum.org/beta/
Thanks, is it identical to the final apk?
shsmith
Jr. Member
*
Offline Offline

Activity: 34



View Profile
March 05, 2016, 05:50:33 PM
 #109

Thanks, is it identical to the final apk?
I think the google play version has been updated twice this beta.
I used that beta and it worked fine for me.

The author (ThomasV) stopped posting betas once it went live on google play.
He would likely be open to posting the latest APK on the electrum.org/#download page if you ask him directly.
japerry
Sr. Member
****
Offline Offline

Activity: 304



View Profile
March 05, 2016, 07:33:11 PM
 #110

Any chance that it might someday support hardware wallets (Ledger in particular)? Then it would be a perfect companion for the desktop version.

romerun
Legendary
*
Offline Offline

Activity: 1036


Bitcoin is new, makes sense to hodl.


View Profile
March 06, 2016, 02:25:50 PM
 #111

Trying multisig. So I created electrum multisig-wallets on desktop. I can use desktop electrum to initiate sending and use the android electrum to cosign it, just fine. But I  does not seem to work when initiate sending with android, then desktop to cosign. Ideally I have two android phones, I want them to cosign one another tx.

When android multisig wallet electrum sends coin, it says "Partially signed" with a QR code. I scanned that QR with another android electrum on the send tab. It says "wrong UPE" or something. I also scanned that with my desktop electrum (using load transaction..) It says "unable to parse".

Also android electrum only supports 6 digits password which can be brute forced within a blink, any plans to support characters.. ?
DuddlyDoRight
Full Member
***
Offline Offline

Activity: 233



View Profile WWW
March 06, 2016, 08:08:43 PM
 #112

Trying multisig. So I created electrum multisig-wallets on desktop. I can use desktop electrum to initiate sending and use the android electrum to cosign it, just fine. But I  does not seem to work when initiate sending with android, then desktop to cosign. Ideally I have two android phones, I want them to cosign one another tx.

When android multisig wallet electrum sends coin, it says "Partially signed" with a QR code. I scanned that QR with another android electrum on the send tab. It says "wrong UPE" or something. I also scanned that with my desktop electrum (using load transaction..) It says "unable to parse".

Also android electrum only supports 6 digits password which can be brute forced within a blink, any plans to support characters.. ?

Not when there is a lockout policy. Big passwords typically lead to data-loss and bad practices for people who don't use a hardware key which has a bigger attack surface than short keys stored in their brain. The encrypted data protection itself has nothing to do with a password since no hardware isolation or policy isolation is used.

If I get free time I'll make a GIT fork and implement the Android keystore which uses hardware isolation on most devices. You can also put the encrypted data in a sandbox that is safe everywhere but jailbroken devices.

I have faith that one day this forum will get threads where people won't just repeat their previous posts or what others have already stated in the same thread. Also that people will stop acting like BTC is toy-money and start holding vendors accountable. Naive? Maybe.
ThomasV
Legendary
*
Offline Offline

Activity: 1722



View Profile WWW
March 06, 2016, 08:26:58 PM
 #113

When android multisig wallet electrum sends coin, it says "Partially signed" with a QR code. I scanned that QR with another android electrum on the send tab. It says "wrong UPE" or something. I also scanned that with my desktop electrum (using load transaction..) It says "unable to parse".

wrong UPE: the scanner recognized it as a barcode, not a qr code. retry, holding your camera well aligned.
"unable to parse": maybe the desktop version is to old?

Electrum: the convenience of a web wallet, without the risks
ThomasV
Legendary
*
Offline Offline

Activity: 1722



View Profile WWW
March 06, 2016, 08:28:30 PM
 #114

If I get free time I'll make a GIT fork and implement the Android keystore which uses hardware isolation on most devices. You can also put the encrypted data in a sandbox that is safe everywhere but jailbroken devices.
that would be awesome

Electrum: the convenience of a web wallet, without the risks
romerun
Legendary
*
Offline Offline

Activity: 1036


Bitcoin is new, makes sense to hodl.


View Profile
March 07, 2016, 12:42:00 AM
 #115

I think one of the problem is, in android version, the QR gives "non hex" format of raw transaction ( something like this AFEA*0JN*-P9O1OY+:GV+.GKECS2R$KZW9$6MU6KPMMJLRI74SCEVS$K$NEASLB0.R.U3KEGJ+1UHYGF-Y-:PEY:ES-0D-$P0TUX1F4D6S5P..... ), while in desktop version the qr data is in hex format.

I'm on 2.6.1 both desktop and android.
ThomasV
Legendary
*
Offline Offline

Activity: 1722



View Profile WWW
March 07, 2016, 06:09:34 AM
 #116

I think one of the problem is, in android version, the QR gives "non hex" format of raw transaction ( something like this AFEA*0JN*-P9O1OY+:GV+.GKECS2R$KZW9$6MU6KPMMJLRI74SCEVS$K$NEASLB0.R.U3KEGJ+1UHYGF-Y-:PEY:ES-0D-$P0TUX1F4D6S5P..... ), while in desktop version the qr data is in hex format.

I'm on 2.6.1 both desktop and android.

this "non hex" format is called base43
it should be what both the desktop version and the android version use.

Electrum: the convenience of a web wallet, without the risks
itogo
Member
**
Offline Offline

Activity: 93


View Profile
March 07, 2016, 06:35:22 PM
 #117

How to delete a wallet?

I have tried to delete App,, then installed again. The wallet is already available.


More. I want more settings in mobile version.
TheButterZone
Legendary
*
Offline Offline

Activity: 1624


Nemo me impune lacessit


View Profile WWW
March 07, 2016, 10:54:58 PM
 #118

Nice, it's backwards compatible to pre-xpub MPK format.

ΜΟΛΩΝ ΛΑΒΕ! I sell stuff for BTC here here and here | Skirt & Kilts & Violin For Sale | Voiceover for BTC | Copy editing for BTC | THE Bitcoin Sound is here.
gpg_identity=http://pgp.thebutterzone.com | WoT feedback here & eBay feedback here | Buy BTC in San Diego, CA, or worldwide! | Get paid for taking surveys!
Change my name! "I am __ Satoshi __." | PayPal: Bitcoinese for "FU, I'm getting a chargeback up to 365 days later!" | Bitcoin voice chat
ThomasV
Legendary
*
Offline Offline

Activity: 1722



View Profile WWW
March 08, 2016, 10:48:49 AM
 #119

Not when there is a lockout policy. Big passwords typically lead to data-loss and bad practices for people who don't use a hardware key which has a bigger attack surface than short keys stored in their brain. The encrypted data protection itself has nothing to do with a password since no hardware isolation or policy isolation is used.

If I get free time I'll make a GIT fork and implement the Android keystore which uses hardware isolation on most devices. You can also put the encrypted data in a sandbox that is safe everywhere but jailbroken devices.

Note: I pushed an new apk today, that stores wallet and config data to the device internal data storage.

Electrum: the convenience of a web wallet, without the risks
ThomasV
Legendary
*
Offline Offline

Activity: 1722



View Profile WWW
March 09, 2016, 09:05:21 AM
 #120

How to delete a wallet?
I have tried to delete App,, then installed again. The wallet is already available.

First upgrade the app to the lastest version, then uninstall it.
That will delete your wallet.
Do not forget to keep a paper backup of your seed phrase.

Electrum: the convenience of a web wallet, without the risks
Pages: « 1 2 3 4 5 [6] 7 »  All
  Print  
 
Jump to:  

Sponsored by , a Bitcoin-accepting VPN.
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!