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Merge pull request #704 from mDuo13/doc2359

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Key Derivation Info
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Rome Reginelli
2019-10-16 13:57:37 -07:00
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parent 7a92c1cd26 836246de05
commit faff49afbd
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content/concepts/payment-system-basics/accounts/accounts.md
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@@ -92,13 +92,13 @@ For more information on each of these objects, see the [Ledger Format Reference]
[[Source]<br>](https://github.com/ripple/rippled/blob/35fa20a110e3d43ffc1e9e664fc9017b6f2747ae/src/ripple/protocol/impl/AccountID.cpp#L109-L140 "Source")
XRP Ledger addresses are encoded using [base58](https://en.wikipedia.org/wiki/Base58) with the Ripple _dictionary_: `rpshnaf39wBUDNEGHJKLM4PQRST7VWXYZ2bcdeCg65jkm8oFqi1tuvAxyz`. Since the XRP Ledger encodes several types of keys with base58, it prefixes the encoded data with a one-byte "type prefix" (also called a "version prefix") to distinguish them. The type prefix causes addresses to usually start with different letters in base58 format.
XRP Ledger addresses are encoded using [base58](https://en.wikipedia.org/wiki/Base58) with the _dictionary_ `rpshnaf39wBUDNEGHJKLM4PQRST7VWXYZ2bcdeCg65jkm8oFqi1tuvAxyz`. Since the XRP Ledger encodes several types of keys with base58, it prefixes the encoded data with a one-byte "type prefix" (also called a "version prefix") to distinguish them. The type prefix causes addresses to usually start with different letters in base58 format.
The following diagram shows the relationship between keys and addresses:
![Passphrase → Secret Key → Public Key + Type Prefix → Account ID + Checksum → Address](img/key-address-rels.png)
[![Master Public Key + Type Prefix → Account ID + Checksum → Address](img/address-encoding.png)](img/address-encoding.png)
The formula for calculating an XRP Ledger address is as follows. For the complete example code, see [`encode_address.js`](https://github.com/ripple/ripple-dev-portal/blob/master/content/_code-samples/address_encoding/encode_address.js).
The formula for calculating an XRP Ledger address from a public key is as follows. For the complete example code, see [`encode_address.js`](https://github.com/ripple/ripple-dev-portal/blob/master/content/_code-samples/address_encoding/encode_address.js). For the process of deriving a public key from a passphrase or seed value, see [Key Derivation](cryptographic-keys.html#key-derivation).
1. Import required algorithms: SHA-256, RIPEMD160, and base58. Set the dictionary for base58.