Michelson中的key，key_hash，地址，合同和签名之间有什么区别？

1. key_hash 是公钥的blake2b哈希,以base58编码的形式只能以tz 开头,但是 address 更通用,它也可以拥有 KT 帐户；
2. 对此没有任何说明,可能是因为这是一种罕见且可争论的情况.编辑:正如Raphaël所指出的,您可以使用 IMPLICIT_ACCOUNT;将 key_hash 转换为 contract ,然后转换为 address ；地址
3. 如前所述, key_hash 是 key 的blake2b哈希.您将需要 key 来检查实例签名；
4. 允许我链接维基百科 https://ru.wikipedia.org/wiki/EdDSA.一个很好的例子是多重签名合同；
5. 查看新的迈克尔逊文档 https://michelson.nomadic-labs.com/

总结:

• key 表示公共密钥(椭圆曲线上的一个点)
• key_hash 是 key
的blake2b哈希
• 地址是Tezos帐户的一般表示,包括-tz 和 KT 地址
• 签名是使用椭圆曲线数字签名方案使用私钥对邮件进行签名的结果.

1. key_hash is blake2b hash of a public key, in the base58 encoded form it can start only with tz, but address is more general, it can also hold KT accounts;
2. There are no instructions for that, probably because it's a rare and arguable case; EDIT: as pointed out by Raphaël, you can convert key_hash to contract and then to address using IMPLICIT_ACCOUNT ; ADDRESS
3. As was mentioned, key_hash is blake2b hash of key. You would need a key for checking a signature for instance;
4. Allow me to link wikipedia https://ru.wikipedia.org/wiki/EdDSA. A bright example is a multisig contract;
5. Check out the new Michelson documentation https://michelson.nomadic-labs.com/

To sum up:

• key represents a public key (a point on the elliptic curve)
• key_hash is blake2b hash of key
• address is a general representation of Tezos accounts, including both - tz and KT addresses
• signature is a result of signing a message with a private key using the elliptic curve digital signature scheme.

为什么我可以在地址和合同之间转换.但是不在address和key_hash之间吗?

有( IMPLICIT_ACCOUNT 的说明从key_hash转到address.对于另一个方向,存在(功能请求),但是已关闭,因为没有提出用例来激发它.

Why can I convert between address and contract. But not between address and key_hash?

There is the (IMPLICIT_ACCOUNT) instruction to go from key_hash to address. For the other direction, there was (a feature request) but it was closed because no use case has been presented to motivate it.