cosmos 多签/多重签名

1. 生成两个普通账户

nscli keys add mykeyname
nscli keys add mykeyname2

2. 生成多签账户lee,该账户对外转账需要mykeyname和mykeyname2的签名

nscli keys add --multisig=mykeyname,mykeyname2 --multisig-threshold=2 lee

3. 给多签账户转一点币，便于测试

nscli tx send $(nscli keys show -a alice) $(nscli keys show -a lee) 10bde --chain-id=namechain 

4. 创建一笔多签交易：多签账户对bob转2bde

nscli tx send $(nscli keys show -a lee) $(nscli keys show -a bob) 2bde --generate-only --chain-id=namechain > unsignedTx.json

unsignedTx.json

{
	"type": "cosmos-sdk/StdTx",
	"value": {
		"msg": [{
			"type": "cosmos-sdk/MsgSend",
			"value": {
				"from_address": "cosmos1zmyxa4a26mnm7vd9r9vr9j73dzlrjxh4ld9s87",
				"to_address": "cosmos1y23vxhglf798838xjp048h8em0xk0q6c05aqzp",
				"amount": [{
					"denom": "bde",
					"amount": "2"
				}]
			}
		}],
		"fee": {
			"amount": [],
			"gas": "200000"
		},
		"signatures": null,
		"memo": ""
	}
}

5. 账户1 mykeyname 签名

nscli tx sign unsignedTx.json --from=$(nscli keys show -a mykeyname) --multisig=$(nscli keys show -a lee) --chain-id=namec
hain > signature1.json

{
	"pub_key": {
		"type": "tendermint/PubKeySecp256k1",
		"value": "A6h0GxSoYceL0azPbQbsFPOTfl6KRzYe9lm5yRNWeU97"
	},
	"signature": "uerHnA5MtXftQ5RUbGgPNMTaT4JwIX3lg0JkwA7N5RtDA2OXc+G01h/aThs8mt+QmZ3ucy70/ssd7EjctSU5Kw=="
}

6. 账户2 mykeyname2 签名

nscli tx sign unsignedTx.json --from=$(nscli keys show -a mykeyname2) --multisig=$(nscli keys show -a lee) --chain-id=namec
hain > signature2.json

{
	"pub_key": {
		"type": "tendermint/PubKeySecp256k1",
		"value": "AhozeSl91stP+jSrP08UjsPD166P0uvo7QIHUA7XH5Ce"
	},
	"signature": "vkeh7QeVNJodqGdMYf3hhQiEWbTtT1TeRXC1kceqqSx/g6XlFCLwj6P0oP7QRmYKItgNW2e/2HyvP/ieAJXZDw=="
}

7. 合并签名

nscli tx multisign unsignedTx.json lee signature1.json signature2.json --chain-id=namechain > signedTx.json

{
	"type": "cosmos-sdk/StdTx",
	"value": {
		"msg": [{
			"type": "cosmos-sdk/MsgSend",
			"value": {
				"from_address": "cosmos1zmyxa4a26mnm7vd9r9vr9j73dzlrjxh4ld9s87",
				"to_address": "cosmos1y23vxhglf798838xjp048h8em0xk0q6c05aqzp",
				"amount": [{
					"denom": "bde",
					"amount": "2"
				}]
			}
		}],
		"fee": {
			"amount": [],
			"gas": "200000"
		},
		"signatures": [{
			"pub_key": {
				"type": "tendermint/PubKeyMultisigThreshold",
				"value": {
					"threshold": "2",
					"pubkeys": [{
						"type": "tendermint/PubKeySecp256k1",
						"value": "A6h0GxSoYceL0azPbQbsFPOTfl6KRzYe9lm5yRNWeU97"
					}, {
						"type": "tendermint/PubKeySecp256k1",
						"value": "AhozeSl91stP+jSrP08UjsPD166P0uvo7QIHUA7XH5Ce"
					}]
				}
			},
			"signature": "CgUIAhIBwBJAuerHnA5MtXftQ5RUbGgPNMTaT4JwIX3lg0JkwA7N5RtDA2OXc+G01h/aThs8mt+QmZ3ucy70/ssd7EjctSU5KxJAvkeh7QeVNJodqGdMYf3hhQiEWbTtT1TeRXC1kceqqSx/g6XlFCLwj6P0oP7QRmYKItgNW2e/2HyvP/ieAJXZDw=="
		}],
		"memo": ""
	}
}

8. 广播交易

nscli tx broadcast signedTx.json

多重签名原理参考：

https://www.ipfsbi.com/%E6%AF%94%E7%89%B9%E5%B8%81%E7%9A%84%E5%A4%9A%E9%87%8D%E7%AD%BE%E5%90%8D/