feat: Identity storage.

src/identity-storage.js

@@ -0,0 +1,32 @@
+import Entry from './entry.js'
+import IPFSBlockStorage from './ipfs-block-storage.js'
+import * as dagCbor from '@ipld/dag-cbor'
+import { sha256 } from 'multiformats/hashes/sha2'
+import { base58btc } from 'multiformats/bases/base58'
+import * as Block from 'multiformats/block'
+
+const codec = dagCbor
+const hasher = sha256
+
+const IdentityStorage = async ({ storage }) => {
+  const put = async (identity) => {
+    const { cid, bytes } = await Block.encode({ value: identity.toJSON(), codec, hasher })
+    await storage.put(cid.toString(base58btc), bytes)
+  }
+  
+  const get = async (hash) => {
+    const bytes = await storage.get(hash)
+
+    if (bytes) {
+      const { value } = await Block.decode({ bytes, codec, hasher })
+      return value 
+    }
+  }
+
+  return {
+    put,
+    get
+  }
+}
+
+export default IdentityStorage

src/log.js

@@ -8,6 +8,7 @@ import MemoryStorage from './memory-storage.js'
 import LRUStorage from './lru-storage.js'
 import LevelStorage from './level-storage.js'
 import ComposedStorage from './composed-storage.js'
+import IdentityStorage from './identity-storage.js'
 import { isDefined } from './utils/index.js'
 
 const { LastWriteWins, NoZeroes } = Sorting
@@ -464,4 +465,4 @@ export { Log }
 export { Sorting }
 export { Entry }
 export { DefaultAccessController }
-export { IPFSBlockStorage, MemoryStorage, LRUStorage, LevelStorage, ComposedStorage }
+export { IPFSBlockStorage, MemoryStorage, LRUStorage, LevelStorage, ComposedStorage, IdentityStorage }