Anoma中的account

1. 引言

前序博客有：

• Anoma——多方加密资产隐秘交换

Anoma定位为多方加密资产隐秘交互协议，为Layer 1 方案，采用PoS共识。目前已上测试网feigenbaum。

当前Anoma采用ed25519。
Anoma中的address和key支持alias假名模式：

anoma wallet key gen --alias my-key

默认新建的账号在：.anoma/{chain_id}/wallet.toml (with the default --base-dir)。

All accounts in the Anoma ledger have a unique address, exactly one validity predicate and optionally any additional data in its dynamic storage sub-space.

Anoma只有一种账号类型。Anoma每个账号关联了：

• 1）a unique address
• 2）a validity predicate
• 3）dynamic storage

2. Address

Anoma中的address分为：

• transparent address：关联了dynamic storage sub-spaces，地址为the prefix key segment of its sub-space。
• shielded address：用于隐私交易，不直接与storage sub-spaces关联。

2.1 transparent address

Anoma中有3种transparent address：

• 1）Implicit address：当前Anoma未完全支持。基于某公钥 派生而来，可用于授权特定的交易。可用作recipients of transactions without even when the account has not been used on-chain before。
• 2）Established address：支持the deployment of custom validation logic。基于当前address nonce生成，必须通过交易在链上创建。直到交易提交上链后才知道具体的地址。
• 3）Internal address：特殊的内部地址，如protocol parameters account, PoS和IBC。

Anoma中链上地址的存储采用基于bech32 改进的 bech32m 编码方案，目前ZCash暂未实现bech32m。
为了使地址便于识别，前缀为：

• ”a“ for Anoma live network
• “atest” for test network

2.2 shielded address

与 Zcash Sapling protocol payment addresses and keys (section 3.1)类似，用户为private payment生成spending key，基于该 spending key可派生出 shielded payment address、incoming viewing key 和 full viewing key。在private payment中，shielded payment address 和 diversifier 一起hash生成 a diversified transmission key。可对不同的交易选择不同的diversifier，从而可避免通过交易来匹配transmission key。

目前暂未确定对shielded addresses、spending key和 viewing key的编码方式，但为了保持一致性，可能会选用相同的编码方式，只是前缀不同。

• TODO consider using a schema similar to the unified addresses proposed in Zcash, that are designed to unify the payment addresses across different versions by encoding a typecode and the length of the payment address together with it. This may be especially useful for the protocol upgrade system and fractal scaling system.

参考资料

[1] Anoma doc
[2] Anoma accounts设计文档