bx hd private

Derive a child HD (BIP32) private key from another HD private key.

$ bx hd-private --help

Usage: bx hd-private [-dh] [--config VALUE] [--index VALUE]              
[HD_PRIVATE_KEY]                                                         

Info: Derive a child HD (BIP32) private key from another HD private key. 

Options (named):

-c [--config]        The path to the configuration settings file.        
-d [--hard]          Signal to create a hardened key.                    
-h [--help]          Get a description and instructions for this command.
-i [--index]         The HD index, defaults to zero.                     

Arguments (positional):

HD_PRIVATE_KEY       The parent HD private key. If not specified the key 
                     is read from STDIN. 

Example 1

BIP32 Test Vector 1 Chain m/0H

$ bx hd-private -d xprv9s21ZrQH143K3QTDL4LXw2F7HEK3wJUD2nW2nRk4stbPy6cq3jPPqjiChkVvvNKmPGJxWUtg6LnF5kejMRNNU3TGtRBeJgk33yuGBxrMPHi

xprv9uHRZZhk6KAJC1avXpDAp4MDc3sQKNxDiPvvkX8Br5ngLNv1TxvUxt4cV1rGL5hj6KCesnDYUhd7oWgT11eZG7XnxHrnYeSvkzY7d2bhkJ7

Example 2

BIP32 Test Vector 1 Chain m/0H/1

$ bx hd-private -i 1 xprv9uHRZZhk6KAJC1avXpDAp4MDc3sQKNxDiPvvkX8Br5ngLNv1TxvUxt4cV1rGL5hj6KCesnDYUhd7oWgT11eZG7XnxHrnYeSvkzY7d2bhkJ7

xprv9wTYmMFdV23N2TdNG573QoEsfRrWKQgWeibmLntzniatZvR9BmLnvSxqu53Kw1UmYPxLgboyZQaXwTCg8MSY3H2EU4pWcQDnRnrVA1xe8fs

Example 3

BIP32 Test Vector 2 chain M/0

$ bx hd-private xprv9s21ZrQH143K31xYSDQpPDxsXRTUcvj2iNHm5NUtrGiGG5e2DtALGdso3pGz6ssrdK4PFmM8NSpSBHNqPqm55Qn3LqFtT2emdEXVYsCzC2U

xprv9vHkqa6EV4sPZHYqZznhT2NPtPCjKuDKGY38FBWLvgaDx45zo9WQRUT3dKYnjwih2yJD9mkrocEZXo1ex8G81dwSM1fwqWpWkeS3v86pgKt

Example 4

BIP32 Test Vector 2 Chain m/0/2147483647H

$ bx hd-private -d -i 2147483647 xprv9vHkqa6EV4sPZHYqZznhT2NPtPCjKuDKGY38FBWLvgaDx45zo9WQRUT3dKYnjwih2yJD9mkrocEZXo1ex8G81dwSM1fwqWpWkeS3v86pgKt

xprv9wSp6B7kry3Vj9m1zSnLvN3xH8RdsPP1Mh7fAaR7aRLcQMKTR2vidYEeEg2mUCTAwCd6vnxVrcjfy2kRgVsFawNzmjuHc2YmYRmagcEPdU9

Example 5

piped commands

$ echo [user entropy] | hd-new | hd-private

875d946b5db47508d67756250f63dd6d
xprv9s21ZrQH143K2odHtyepinTKCiDf8eBUv5fTHtwDHef5VwX79HyVkut91SFpMUvRHF9f2jwkoQ1Z4kpsrpfvS8ZX4QKCcoZoMeXmLWfPKvB
xprv9vHdLyX7nuCbJGV6xHSSi6MxqibjVeiKRF4Z7P2fPKZgpFvmU1oM9mXJqAXCpsHS7FX2Z2fmSTigfeW32bGAQvkLtgQRqgHJPWSptU1gyo6

Example 6

BIP32 Test Vector 1 Chain m/0H/1/2H/2/1000000000

$ bx hd-new 000102030405060708090a0b0c0d0e0f | bx hd-private -d | bx hd-private -i 1 | bx hd-private -d -i 2 | bx hd-private -i 2 | bx hd-private -i 1000000000

xprvA41z7zogVVwxVSgdKUHDy1SKmdb533PjDz7J6N6mV6uS3ze1ai8FHa8kmHScGpWmj4WggLyQjgPie1rFSruoUihUZREPSL39UNdE3BBDu76