consolidate into lib

bippy-scratch.md

@@ -8,6 +8,11 @@ Converts a base58 zpub to hex
 +bip84 "zpub6rFR7y4Q2AijBEqTUquhVz398htDFrtymD9xYYfG1m4wAcvPhXNfE3EfH1r1ADqtfSdVCToUG868RvUUkgDKf31mGDtKsAYz2oz2AGutZYs"
 ```
 
+### btc-address
+```
+=btca -build-file %/lib/btc-address.hoon
+```
+
 ### decoded hex from base58
 Get the public key (start at 45 and take 33 bytes):
 ```

gen/bip84.hoon

@@ -1,7 +1,7 @@
-/+  bip84, bip32
+/+  btca=btc-address
 :-  %say
 |=  [[now=@da eny=@uvJ bec=beak] [zpub=tape ~] ~]
 :-  %noun
-=/  bs=(list @ux)
-  (zpub-bytes:bip84 zpub)
-(pubkey-to-point:bip32 bs)
+=/  bs=[(list @ux) (list @ux)]
+  (parse-zpub:btca zpub)
+bs

lib/bip32.hoon

@@ -1,11 +0,0 @@
-|%
-++  pubkey-to-point
-  |=  pubkey-bytes=(list @ux)
-  ^-  pont:secp:crypto
-  =/  as-atom=@
-    (rap 3 (flop (swag [45 33] pubkey-bytes)))
-  (decompress-point:secp256k1:secp:crypto as-atom)
-++  is-point
-  |=  pubkey=(list @ux)  ^-  ?
-  %.y
---

lib/bip84.hoon

@@ -1,10 +0,0 @@
-|%
-++  zpub-bytes
-  |=  zpub=tape
-  ^-  (list @ux)
-  =/  as-atom=@
-    (de-base58:mimes:html zpub)
-  %+  turn
-    (flop (rip 3 as-atom))
-  |=(bytes=@ `@ux`bytes)
---

lib/btc-address.hoon

@@ -0,0 +1,36 @@
+|%
+::  bytes rip: 0x6261 -> ~[98 97]
+::
++$  pubkey     (list @ux)
++$  chaincode  (list @ux)
+++  big-endian-brip
+  |=  a=@ux
+  ^-  (list @ux)
+  (flop (rip 3 a))
+::  bytes rap: ~[98 97] -> 0x6261
+::
+++  big-endian-brap
+  |=  bytes=(list @ux)
+  ^-  @ux
+  (swp 3 (rap 3 bytes))
+::
+++  parse-zpub
+  |=  zpub=tape
+  ^-  [cc=chaincode pubk=pubkey]
+  =/  as-atom=@ux
+    (de-base58:mimes:html zpub)
+  =/  bytes=(list @ux)
+    (big-endian-brip as-atom)
+  [(swag [13 32] bytes) (swag [45 33] bytes)]
+::
+++  pubkey-to-point
+  |=  pubkey-bytes=pubkey
+  ^-  pont:secp:crypto
+  =/  as-atom=@
+    (rap 3 (flop (swag [45 33] pubkey-bytes)))
+  (decompress-point:secp256k1:secp:crypto as-atom)
+::
+++  is-point
+  |=  pubkey=pubkey  ^-  ?
+  -:(mule |.((pubkey-to-point pubkey)))
+--