kunwei2005

openssl rsa -in id_rsa -outform pem > id_rsa.pem openssl rsa -in id_rsa -pubout -out id_rsa.pub.pem openssl dgst -sha256 -sign ~/.ssh/id_rsa.pem -out signature.data message openssl dgst -sha256 -verify ~/.ssh/id_rsa.pub.pem -signature signature.data  message

download/install geth from  https://github.com/ethereum/go-ethereum/wiki/Installation-instructions-for-Windows setup private net jason file under ~/.privether, an example of privategenesis.json {   "nonce": "0x00006d6f7264656e",   "difficulty": "0x000002",   "mixhash": "0x00000000000000000000000000000000000000647572616c65787365646c6578",   "coinbase": "0x0000000000000000000000000000000000000000",   "timestamp": "0x00",   "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",   "extraData": "0x",   "gasLimit": "0x2FEFD8",   "config": {         "chainId": 15,         "homesteadBlock": 0,         "eip155Block": 0,         "eip158Block": 0   },   "alloc": {     "cd2a3d9f938e13cd947ec05abc7fe734df8dd826": { "b