eos构造裸交易并签名
1. 需要到链上获取到的数据
获取 ref_block_prefix
get_info以获取最后一个不可逆的块号：last_irreversible_block_num 这是一个屏幕截图get_block获取有关该区块的信息：这是屏幕截图从中找出 ref_block_prefix 的数据
2.1 之后本地可离线构造出未签名交易数据
然后计算 ref_block_num
const ref_block_num = (info.last_irreversible_block_num) & 0xFFFF
expiration:
当前系统时间(按与节点相同的时区算) + 300秒 (cleos默认是30秒)
编码构造 data :
组装对象
{
"code": "eosio.token",
"action": "transfer",
"args": {
"from": "fromaccount",
"to": "toaccount",
"quantity": "1.0000 EOS",
"memo": "memo"
}
}
编码
参考 https://developers.eos.io/eosio-nodeos/reference#abi_bin_to_json
参考 https://github.com/OracleChain/PocketEOS-IOS/blob/ca34cd96ebaa773d806a6aa7ddf913504d6a66d5/pocketEOS/SecureModule/EC/EosByteWriter.m
通过api接口构造action所需的data
curl http://192.168.1.201:30088/v1/chain/abi_json_to_bin -X POST -d
'{"code":"eosio.token", "action":"transfer", "args":{"from":"xxx", "to":"xxx", "quantity":"xxx", "memo":"xxx"}}'
签名
chainidsha256ECDSA-K1
构造结果(未签名)
{
"compression": "none",
"transaction": {
"expiration": "2018-08-01T06:11:23",
"ref_block_num": 10855,
"ref_block_prefix": 473148127,
"max_net_usage_words": 0,
"max_cpu_usage_ms": 0,
"delay_sec": 0,
"context_free_actions": [],
"actions": [{
"account": "eosio.token",
"name": "transfer",
"authorization": [{
"actor": "fromaccount",
"permission": "active"
}],
"data": "0000000000ea305500000000487a2b9d102700000000000004454f53000000001163726561746564206279206e6f70726f6d"
}],
"transaction_extensions": [],
"signatures": null,
"context_free_data": []
},
"signatures": ["SIG_K1_JwLVG5pRdhvLfJGWkDEBPa7wdLbNeqeRFdvFrKDEryahSwCRpPb75m4auZh8frq6cXsm3dHit8GMbmuuBWxEjH"]
}
2.2 也可以通过cleos命令构造未签名交易数据
cleos push action eosio.token transfer
'{"from":"xxx", "to":"xxx", "quantity":"xxx", "memo":"xxx"}' -p fromaccount@active -jds
-j: print result as json
-d: don't broadcast transaction to the network
(just print to stdout
)
-s: Specify
if unlocked wallet keys should be used to sign transaction
3. 签名并发送交易
使用上面构造的 [transaction json], 和传入的私钥签名, 并发送交易
./cleos sign -p -k
[private-key
] '[transaction json]'
-k,--private-key TEXT The private key that will be used to sign the transaction
-p,--push-transaction Push transaction after signing
