不忘初心

以太坊之账户

2017/11/19 ethereum

账户

以太坊，有两种账户类型：外部账户和合约账户。我们这里重点讲一下外部账户，以下会简称为账户。合约账户简称为合约， 在合约章节具体讨论。 账户内容与以太坊类似包括： nonce: 是一个计数器用于确保每笔交易只被处理一次 balance： 账户当前余额 codehash：the hash of account’s code , 合约代码hash. 默认为EmptySHA3 storageroot:state DB 存储空间

钥匙文件

以太坊的钥匙文件。每个账户都由一对钥匙定义，一个私钥和一个公钥。 账户以地址为索引，地址由公钥衍生而来，取公钥的最后 20个字节。每对私钥 /地址都编码在一个钥匙文件里。钥匙文件是JSON文本文件，可以用任何文本编辑器打开和浏览。


{
    "address" : "0065aaf34d2e71eafe6733d3470e501cd52d0caf",
    "crypto" : {
        "cipher" : "aes-128-ctr",
        "cipherparams" : {
            "iv" : "3a672facc8ac03699c60749c200003ca"
        },
        "ciphertext" : "f41427678daa07f1c47e8016a8fd45128318e8a0dda2d365c67667b0a1955f12",
        "kdf" : "scrypt",
        "kdfparams" : {
            "dklen" : 32,
            "n" : 262144,
            "p" : 1,
            "r" : 8,
            "salt" : "6eac965f623956d863cd6b6ce81e13bffeb30c0c466071c371eb2d8177be474b"
        },
        "mac" : "6199ff1df7ba43c984ec67242fcd2cfb0e97f72b83e6473a76fb6586a6748c44"
    },
    "id" : "7e1bb5a1-e93c-59d6-9ebd-cb1bc420c718",
    "version" : 3
}

注： 记住密码，并且备份钥匙文件。为了从账号发送交易，你必须同时有钥匙文件和密码。确保钥匙文件有个备份并牢记密码，尽可能安全地存储它们。没有密码不可能进入账号，也没有忘记密码选项。所以一定不要忘记密码。

创建账户

安装geth以后，不需要区块链同步及启动geth进程。 就可以执行geth account命令。


root@xxxx:/# bcoseth account new
2017-11-19 23:26:03,562 TRACE [default] [dev::eth::ChainParams dev::eth::ChainParams::loadConfig(const string&, const h256&) const] [/home/administrator/workspace/c++/bcos/libethereum/ChainParams.cpp:124] genesisStateStr = {"0000000000000000000000000000000000000001":{"precompiled":{"linear":{"base":3000,"word":0},"name":"ecrecover"}},"0000000000000000000000000000000000000002":{"precompiled":{"linear":{"base":60,"word":12},"name":"sha256"}},"0000000000000000000000000000000000000003":{"precompiled":{"linear":{"base":600,"word":120},"name":"ripemd160"}},"0000000000000000000000000000000000000004":{"precompiled":{"linear":{"base":15,"word":3},"name":"identity"}},"004f9d39c8424e7f86004622cef21a0bbe140bfa":{"balance":"999999999999000000000000000000"},"00dcf3367eab3b34d6a598f453d1aee9146b50f3":{"balance":"999999999999000000000000000000"}}
2017-11-19 23:26:03,563 INFO [default] cp.dataDir=/mydata/nodedata-1/,cp.wallet=/mydata/nodedata-1//keys.info,cp.keystoreDir=/mydata/nodedata-1//keystore/,cp.logFileConf=/mydata/nodedata-1//log.conf,cp.storagePath=/mydata/nodedata-1//
2017-11-19 23:26:03,563 TRACE [default] [int main(int, char**)] [/home/administrator/workspace/c++/bcos/eth/main.cpp:468]  Main:: author: 0000000000000000000000000000000000000000
请输入keystore 保存路径：/data/
keystoredir:/data/
2017-11-19 23:26:07,701 TRACE [default] [dev::h128 dev::SecretStore::readKey(const string&, bool)] [/home/administrator/workspace/c++/bcos/libdevcrypto/SecretStore.cpp:227] Reading/data/7e1bb5a1-e93c-59d6-9ebd-cb1bc420c718.json
2017-11-19 23:26:07,749 ERROR [default] Couldn't open wallet. Does it exist?

Enter a passphrase with which to secure this account:
Please confirm the passphrase by entering it again: 
Created key 095f1be4-561f-7896-02cb-c0ea7c93a634
  ICAP: XE451YY0HFNK7F8G3QAGG5XQFRI2AS6GDF
  Address: {0077f839c885255f1a557c82b8032fde15d23c63}

列出所有账户，执行bcoseth account list


root@xxx:/# bcoseth account list
2017-11-19 23:35:34,048 TRACE [default] [dev::eth::ChainParams dev::eth::ChainParams::loadConfig(const string&, const h256&) const] [/home/administrator/workspace/c++/bcos/libethereum/ChainParams.cpp:124] genesisStateStr = {"0000000000000000000000000000000000000001":{"precompiled":{"linear":{"base":3000,"word":0},"name":"ecrecover"}},"0000000000000000000000000000000000000002":{"precompiled":{"linear":{"base":60,"word":12},"name":"sha256"}},"0000000000000000000000000000000000000003":{"precompiled":{"linear":{"base":600,"word":120},"name":"ripemd160"}},"0000000000000000000000000000000000000004":{"precompiled":{"linear":{"base":15,"word":3},"name":"identity"}},"004f9d39c8424e7f86004622cef21a0bbe140bfa":{"balance":"999999999999000000000000000000"},"00dcf3367eab3b34d6a598f453d1aee9146b50f3":{"balance":"999999999999000000000000000000"}}
2017-11-19 23:35:34,048 INFO [default] cp.dataDir=/mydata/nodedata-1/,cp.wallet=/mydata/nodedata-1//keys.info,cp.keystoreDir=/mydata/nodedata-1//keystore/,cp.logFileConf=/mydata/nodedata-1//log.conf,cp.storagePath=/mydata/nodedata-1//
2017-11-19 23:35:34,048 TRACE [default] [int main(int, char**)] [/home/administrator/workspace/c++/bcos/eth/main.cpp:468]  Main:: author: 0000000000000000000000000000000000000000
请输入keystore 保存路径：/data/
keystoredir:/data/
2017-11-19 23:35:41,878 TRACE [default] [dev::h128 dev::SecretStore::readKey(const string&, bool)] [/home/administrator/workspace/c++/bcos/libdevcrypto/SecretStore.cpp:227] Reading/data/095f1be4-561f-7896-02cb-c0ea7c93a634.json
2017-11-19 23:35:41,879 TRACE [default] [dev::h128 dev::SecretStore::readKey(const string&, bool)] [/home/administrator/workspace/c++/bcos/libdevcrypto/SecretStore.cpp:227] Reading/data/a25a7b43-0931-0683-cd7d-382971969e60.json
2017-11-19 23:35:41,879 TRACE [default] [dev::h128 dev::SecretStore::readKey(const string&, bool)] [/home/administrator/workspace/c++/bcos/libdevcrypto/SecretStore.cpp:227] Reading/data/7e1bb5a1-e93c-59d6-9ebd-cb1bc420c718.json
2017-11-19 23:35:41,879 ERROR [default] Couldn't open wallet. Does it exist?

Account #0: {0065aaf34d2e71eafe6733d3470e501cd52d0caf}
Account #1: {004629295e71a17e729bd28f40c7a5c55114d14f}
Account #2: {0077f839c885255f1a557c82b8032fde15d23c63}

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