Hypelerdger Indy Node - 种子价值

Question

我正在使用 indy-sdk 并在步骤 3 (https://github.com/hyperledger/indy-sdk/blob/master/docs/getting-started/indy-walkthrough.md#step-3-getting-the-ownership-for-stewards-verinym) 的演练演示中，Steward 集的种子值等于“000000000000000000000000Steward1”。

如果我更改它（或将其留空），我会收到错误消息。此外，在 /tmp/indy/poo1.txn 中没有关于此特定值的信息。

我的问题是我们如何知道这是正确的值以及我们如何获得它？

Answer 1

为什么它不起作用

000000000000000000000000Steward1 是种子，它（给定默认密钥派生方法）生成 DID Th7MpTaRZVRYnPiabds81Y。您可以使用indy-cli (command line tool) 验证自己

indy> wallet create test key=123
Wallet "test" has been created

indy> wallet open test key=123
Wallet "test" has been opened

wallet(test):indy> did new seed=000000000000000000000000Steward1
Did "Th7MpTaRZVRYnPiabds81Y" has been created with "~7TYfekw4GUagBnBVCqPjiC" verkey

在您使用的网络中，DID VsKV7grR1BUE29mG2Fm2kX 的所有者（即知道其相关私钥或种子的人）拥有steward 角色，该角色授予对账本执行各种操作的权限。因此，如果您修改种子，它将生成不同的 DID，这些 DID 不需要执行教程中进一步使用的操作（例如在分类帐上写入数据）。

000000000000000000000000Steward1 来自哪里

根据您的说法，我认为您正在使用来自 indy-sdk 存储库的预构建 docker 映像，其中包含 indy-node 实例的运行池，遵循其中一些 instructions. 所以简单的答案是000000000000000000000000Steward1 的配置是预先烘焙的。查看用于构建 indy-pool 映像的 dockerfile。注意这些行

RUN awk '{if (index($1, "NETWORK_NAME") != 0) {print("NETWORK_NAME = \"sandbox\"")} else print($0)}' /etc/indy/indy_config.py> /tmp/indy_config.py
RUN mv /tmp/indy_config.py /etc/indy/indy_config.py

让我们看看这些文件中有什么

docker exec indylocalhost cat '/etc/indy/indy_config.py'
# Current network

# Disable stdout logging
enableStdOutLogging = False

# Directory to store ledger.
LEDGER_DIR = '/var/lib/indy'

# Directory to store logs.
LOG_DIR = '/var/log/indy'

# Directory to store keys.
KEYS_DIR = '/var/lib/indy'

# Directory to store genesis transactions files.
GENESIS_DIR = '/var/lib/indy'

# Directory to store backups.
BACKUP_DIR = '/var/lib/indy/backup'

# Directory to store plugins.
PLUGINS_DIR = '/var/lib/indy/plugins'

# Directory to store node info.
NODE_INFO_DIR = '/var/lib/indy'
NETWORK_NAME = 'sandbox'%                                      

这个

# Directory to store genesis transactions files.
GENESIS_DIR = '/var/lib/indy'

看起来像我们正在寻找的东西。让我们看看那里有什么

docker exec indylocalhost ls '/var/lib/indy/sandbox'
data
domain_transactions_genesis
keys
node1_additional_info.json
node1_info.json
node1_version_info.json
node2_additional_info.json
node2_info.json
node2_version_info.json
node3_additional_info.json
node3_info.json
node3_version_info.json
node4_additional_info.json
node4_info.json
node4_version_info.json
pool_transactions_genesis

在区块链中，创世文件通常是您最初用来启动网络的文件，并且可能会在网络中填充一些数据。在 hyperledger-indy 的情况下，有 4 个“子账本”包含不同类型的交易：domain、pool、config、audit。 domain 子账本包含诸如 DIDs、凭证模式或凭证定义之类的内容。我们正在寻找一个 DID，所以让我们看一下文件域 genesis 文件。

docker exec indylocalhost cat '/var/lib/indy/sandbox/domain_transactions_genesis'
{"reqSignature":{},"txn":{"data":{"dest":"V4SGRU86Z58d6TV7PBUe6f","role":"0","verkey":"~CoRER63DVYnWZtK8uAzNbx"},"metadata":{},"type":"1"},"txnMetadata":{"seqNo":1},"ver":"1"}
{"reqSignature":{},"txn":{"data":{"dest":"Th7MpTaRZVRYnPiabds81Y","role":"2","verkey":"~7TYfekw4GUagBnBVCqPjiC"},"metadata":{"from":"V4SGRU86Z58d6TV7PBUe6f"},"type":"1"},"txnMetadata":{"seqNo":2},"ver":"1"}
{"reqSignature":{},"txn":{"data":{"dest":"EbP4aYNeTHL6q385GuVpRV","role":"2","verkey":"~RHGNtfvkgPEUQzQNtNxLNu"},"metadata":{"from":"V4SGRU86Z58d6TV7PBUe6f"},"type":"1"},"txnMetadata":{"seqNo":3},"ver":"1"}
{"reqSignature":{},"txn":{"data":{"dest":"4cU41vWW82ArfxJxHkzXPG","role":"2","verkey":"~EMoPA6HrpiExVihsVfxD3H"},"metadata":{"from":"V4SGRU86Z58d6TV7PBUe6f"},"type":"1"},"txnMetadata":{"seqNo":4},"ver":"1"}
{"reqSignature":{},"txn":{"data":{"dest":"TWwCRQRZ2ZHMJFn9TzLp7W","role":"2","verkey":"~UhP7K35SAXbix1kCQV4Upx"},"metadata":{"from":"V4SGRU86Z58d6TV7PBUe6f"},"type":"1"},"txnMetadata":{"seqNo":5},"ver":"1"}
{"reqSignature":{},"txn":{"data":{"dest":"7JhapNNMLnwkbiC2ZmPZSE","verkey":"~LgpYPrzkB6awcHMTPZ9TVn"},"metadata":{"from":"V4SGRU86Z58d6TV7PBUe6f"},"type":"1"},"txnMetadata":{"seqNo":6},"ver":"1"}
{"reqSignature":{},"txn":{"data":{"dest":"MEPecrczs4Wh6FA12u519D","verkey":"~A4rMgHYboWYS1DXibCgo9W"},"metadata":{"from":"V4SGRU86Z58d6TV7PBUe6f"},"type":"1"},"txnMetadata":{"seqNo":7},"ver":"1"}
{"reqSignature":{},"txn":{"data":{"dest":"EAPtwgevBpzP8hkj9sxuzy","verkey":"~gmzSzu3feXC6g2djF7ar4"},"metadata":{"from":"V4SGRU86Z58d6TV7PBUe6f"},"type":"1"},"txnMetadata":{"seqNo":8},"ver":"1"}
{"reqSignature":{},"txn":{"data":{"dest":"LuL1HK1sDruwkfm68jrVfD","verkey":"~Nyv9BKUJuvjgMbfbwk8CFD"},"metadata":{"from":"V4SGRU86Z58d6TV7PBUe6f"},"type":"1"},"txnMetadata":{"seqNo":9},"ver":"1"}
{"reqSignature":{},"txn":{"data":{"dest":"462p8mtcX6jpa9ky565YEL","verkey":"~LCgq4hnSvMvB8nKd9vgsTD"},"metadata":{"from":"V4SGRU86Z58d6TV7PBUe6f"},"type":"1"},"txnMetadata":{"seqNo":10},"ver":"1"}

您可以看到 DID Th7MpTaRZVRYnPiabds81Y 使用 verkey ~7TYfekw4GUagBnBVCqPjiC 在此分类帐上硬编码，这与我们从种子 000000000000000000000000Steward1 生成的内容相匹配。您还可以看到它被赋予角色"2"。如果你深入挖掘，你可以在indy-plenum 中找到共识算法。 indy 使用的项目，角色 ID 2 是 steward role。

Answer 2

种子是一个秘密值，当我们生成 Indy 网络的创世交易时，我们使用来自该秘密种子值的公共信息/密钥。

要知道写入种子值，使用参与者生成的密钥创建自定义网络并生成 pool_transactions_genesis 和 domain_transactions_genesis 文件，您必须使用 indy-plenum。

您可以在以下教程中找到详细信息：

https://taseen-junaid.medium.com/hyperledger-indy-custom-network-with-indy-node-plenum-protocol-ledger-85fd10eb5bf5

您可以在以下链接中找到该教程的代码库：

https://github.com/Ta-SeenJunaid/Hyperledger-Indy-Tutorial