How do I extract my private keys from a protobuf wallet?


In order to log into your wallet via Counterparty’s web wallet, all you need is your 12 word passphrase. Once you type the passphrase there, you will have full access to the contents of your Bitcoin wallet without any additional keys. To view your private key in counterwallet click on the blue “Address Auctions” button and than on “Show Private Key”, please make sure nobody can look over your shoulder or see your screen.

It is not possible to extract any keys from the GetGems app. The app does not save any relevant keys in cleartext directly on the device. All sensitive data on your device is saved in encrypted form and cannot be decrypted manually.

Within the app, Gems are stored in an off-chain address in a separate wallet and cannot be viewed on the website. Private keys for this Gems address are held by...

0 0


~ The Longer Version ~

A few weeks ago, a friend came to me with a problem. Way back in 2011, he had the great idea to reinstall Windows. Without thinking too much about it, he installed the new version of Windows, and used the drive for a while. It was only later that he realized that the drive actually contained a good quantity if bitcoins. Luckily, he realized there was a chance that the actual data containing the keys may one day be recoverable, and immediately unplugged it and stored it away for safe keeping.

With the price approaching 1000 USD/BTC, he brought the drive to a local bitcoin meetup and asked around. One guy ran various profession forensics tools against the drive with no luck, and at the end of the night, the drive ended up in my hands.

Discussions of forensic hygiene out out of scope for this particular blog entry, but needless to say, my first step was using dd to pull the raw data...

0 0

A .PFX (Personal Information Exchange) File are used to store Certificate and its private and public keys. For example if we need to transfer SSL certificate from one windows server to other, You can simply export it as .pfx file using IIS SSL export wizard or MMC console.

Some times we need to extract private key and certificate from .pfx file, but we can’t directly do it. This article can be helpful for you to do the same. This article will also helpful for you to migrate ssl certificate to AWS ELB, because ELB required private key and certificate separately.

In order to use below commands you must have OpenSSL installed on your Windows or Linux system. Download OpenSSL from here.

Extract Private Key:

The following command will extract private key from .pfx file. You can find the private key in file named private_key.pem.

# openssl pkcs12 -in myfile.pfx -nocerts -out private_key.pem -nodes Enter Import Password: MAC verified OK


0 0

Recent changes to Andreas Schildbach's Bitcoin client for Android have removed the option to export private keys. This has been replaced by an option to back up the entire wallet. Unfortunately, the wallet data of the Schildbach client is stored in an arcane format called protobuf (short presumably for Protocol Buffers). The Schildbach client can restore a protobuf wallet from its AES-encoded backup file. But the protobuf wallet cannot be imported into a different Bitcoin client such as the Bitcoin Core (QT) client.

For emphasis, I'm aware of the command line method of decoding the back-ups created by Schildbach's client, which in the past allowed the private keys to be saved in AES encrypted format to /sdcard/Download. The following command worked in the past to produce a human readable copy of my Bitcoin private keys:

openssl enc -d -aes-256-cbc -a -in encrypted-wallet-keys -out decrypted-wallet-keys

This no longer works. The following command instead produces a...

0 0

I am trying to recover a few coins from a wallet on a hard drive with a corrupt filesystem.(Yeah I know backups and all, this is from a while ago and I had planned to spend the balance on this wallet) The standard bitcointools such as will not read any wallet.dat that I construct with found hex bytes from my old wallet. So I moved on to a recovery method described by John Tobey as follows:

Basically his Perl script searches for the regular expression: (/keyA(.{65})/sg) with the 65 characters representing public keys, and uses these public keys to find keypairs elsewhere in the file. If you know the address of your coins(which I do) you can use and to determine which of the public keys you found correspond to the address. You can run your address through addresstohash, and then run hashpubkey on all the public keys...

0 0
0 0

The advantage to encrypting your paper wallet's private key with a password is that if your paper wallet is stolen or otherwise exposed, the balance on the wallet is safe unless the passphrase used to encrypt the wallet is guessed. However, if you encrypt your private key with BIP38 and you lose your passphrase, it will be impossible for you to recover the funds you have sent to this wallet.

Also, note that not many bitcoin wallet applications or web services are able to import BIP38 private keys. In this case, you will have to use the "Validate" feature on the generator to extract the unencrypted Wallet Import Format (WIF) key as an intermediate step before sweeping the balance.

WARNING: Before sending any funds to a BIP38-encrypted wallet, first do a test make sure you are able to decrypt the printed private key back to ordinary WIF format.

In short, if you do not have a strong understanding of the BIP38 encryption and decryption workflow, do not...

0 0

Private keys have been an integral component of Bitcoin since its first description in 2008. Wallet software generally protects users from the need to understand what private keys are and how they work. Even so, most users eventually come face to face with private keys, too often with unpleasant results.

A basic understanding of private keys helps prevent loss of funds and other mishaps, but it can also offer useful insights into how Bitcoin works. This guide outlines the most important private key concepts for effectively using Bitcoin.

Bitcoin: A Secure Messaging System

Although Bitcoin is best known as a payment system, underneath it all runs a secure messaging system built on the Internet. Instead of relaying emails, texts, or web pages, the Bitcoin network processes value-transfer messages called transactions. Private keys play a central role in verifying these messages, identifying senders and receivers, and in securing the...

0 0
0 0

How does Electrum work?¶

Electrum’s focus is speed, with low resource usage and simplifying Bitcoin. Startup times are instant because it operates in conjunction with high-performance servers that handle the most complicated parts of the Bitcoin system.

Does Electrum trust servers?¶

Not really; the Electrum client never sends private keys to the servers. In addition, it verifies the information reported by servers, using a technique called Simple Payment Verification

What is the Seed?¶

The seed is a random phrase that is used to generate your private keys.


constant forest adore false green weave stop guy fur freeze giggle clock

Your wallet can be entirely recovered from its seed. For this, select the “restore wallet” option in the startup.

How secure is the seed?¶

The seed created by Electrum has 128 bits of entropy. This means that it provides the same level of security as a Bitcoin private key...

0 0