bx ek to ec - enVinci/libbitcoin-explorer GitHub Wiki

Recover the EC private key from an encrypted private key (BIP38).

$ bx ek-to-ec --help

Usage: bx ek-to-ec [-h] [--config VALUE] PASSPHRASE [EK_PRIVATE_KEY]     

Info: Recover the EC private key from an encrypted private key (BIP38).  

Options (named):

-c [--config]        The path to the configuration settings file.        
-h [--help]          Get a description and instructions for this command.

Arguments (positional):

PASSPHRASE           The passphrase that was used to encrypt the         
                     encrypted private key.                              
EK_PRIVATE_KEY       The encrypted private key to decrypt. If not        
                     specified the key is read from STDIN.           

Altchain support is a libbitcoin enhancement not yet specified in BIP-38.

Public key compression and payment address version (i.e. altchain) affect the encrypted private key but have no impact on the value of the underlying elliptic curve private key. These values are carried in the encoding to inform payment address generation.

See also ec-to-ek and ek-to-address.

Example 1

mainnet

$ bx ek-to-ec "my passphrase" 6PYXCdvtrs4NN1TjUYbGS5Sd2gjsVsDm7GttqERRWvRjWDsrhQfJeEHrg5

261fc32e9f29c70e3d898aa7db028c81ede0658e8ff8ffab8160073c048ae83f

Example 2

incorrect passphrase

$ bx ek-to-ec "i forgot" 6PYXCdvtrs4NN1TjUYbGS5Sd2gjsVsDm7GttqERRWvRjWDsrhQfJeEHrg5

The passphrase is incorrect.

Example 3

piped input

$ echo 6PYXCdvtrs4NN1TjUYbGS5Sd2gjsVsDm7GttqERRWvRjWDsrhQfJeEHrg5 | bx ek-to-ec "my passphrase"

6PYXCdvtrs4NN1TjUYbGS5Sd2gjsVsDm7GttqERRWvRjWDsrhQfJeEHrg5 
261fc32e9f29c70e3d898aa7db028c81ede0658e8ff8ffab8160073c048ae83f

Example 4

round trip

$ bx ec-to-ek "my passphrase" 261fc32e9f29c70e3d898aa7db028c81ede0658e8ff8ffab8160073c048ae83f | bx ek-to-ec "my passphrase"

6PYXCdvtrs4NN1TjUYbGS5Sd2gjsVsDm7GttqERRWvRjWDsrhQfJeEHrg5
261fc32e9f29c70e3d898aa7db028c81ede0658e8ff8ffab8160073c048ae83f

Example 5

uncompressed

$ bx ek-to-ec "my passphrase" 6PRPDbKfv3A45QPPfEtvcxM4oA6ShVL7t72VP74P1W3JEUHPrZXNy39FKe

261fc32e9f29c70e3d898aa7db028c81ede0658e8ff8ffab8160073c048ae83f

Example 6

testnet

$ bx ek-to-ec "my passphrase" 8EzHSxX3sfZp6NjYUdt7fZAPCKByrFDS12PHfdexFLSaSAfM7wM7tw3Hof

261fc32e9f29c70e3d898aa7db028c81ede0658e8ff8ffab8160073c048ae83f

Example 7

testnet, uncompressed

$ bx ek-to-ec "my passphrase" 8EsMUV3Z5A9m8eA28nSYECHAmKmy4YsyCYpGNvzHocFJBFhVYZARNfrfnt

261fc32e9f29c70e3d898aa7db028c81ede0658e8ff8ffab8160073c048ae83f

Example 8

multiplied: lot/sequence

$ bx ek-to-ec "my passphrase" 6PoJB3hjqER7KJDeo69pfX3ttV5DPaQPEf4pZEwhNYjTjqMdvif5qfE34S

056115405c7161e62216fcbbf48832c8ed5ef66819a361ec8f6583f12bb2a924

Example 9

multiplied

$ bx ek-to-ec "my passphrase" 6PnUht3dP5Jdcp1B7NGqkEoBw5Ja2wWEeQMDRHqLNrBG4Rqo59eVfMd98B

b1c23d8bf9a957349eafd851808ce5555279cc103924ebd96ddaa3b03666ac74

Example 10

multiplied: uncompressed

$ bx ek-to-ec "my passphrase" 6PfM4jsmgX1veYaiBXqqDe3J8hFtAriohdNGjPfrbt7aQ8H53nijYN6svW

1MydksvfdWNXM1KnVTS8A78M4b78aJcL1W

Example 11

multiplied: testnet

$ bx ek-to-ec "my passphrase" 8FEMBzS4QWPwxyzrYJxHwzSrdNzroFiQjkAnpf51xcPPXkTvqGrD8bVq68

b1c23d8bf9a957349eafd851808ce5555279cc103924ebd96ddaa3b03666ac74

Example 12

multiplied: testnet, uncompressed

$ bx ek-to-ec "my passphrase" 8F7FpHwGgCmZag3nViwdDJTcRUVSZDiyp362gLWisvHDtMQkyC6JJuFhVX

b1c23d8bf9a957349eafd851808ce5555279cc103924ebd96ddaa3b03666ac74