[UNSTABLE][#61] s/Curl/Kerl/g

Note:  Unit tests have NOT been updated yet!  Manual testing needed :3

Author: todofixthis

iota/crypto/signing.py

@@ -296,7 +296,7 @@ def advance(self):
   def _create_sponge(self, index):
     # type: (int) -> Kerl
     """
-    Prepares the Curl sponge for the generator.
+    Prepares the hash sponge for the generator.
     """
     seed = self.seed.as_trits() # type: MutableSequence[int]
 
@@ -316,8 +316,8 @@ def _create_sponge(self, index):
     sponge.absorb(seed)
 
     # Squeeze all of the trits out of the sponge and re-absorb them.
-    # Note that Curl transforms several times per operation, so this
-    # sequence is not as redundant as it looks at first glance.
+    # Note that the sponge transforms several times per operation, so
+    # this sequence is not as redundant as it looks at first glance.
     sponge.squeeze(seed)
     sponge.reset()
     sponge.absorb(seed)

iota/multisig/crypto/addresses.py

@@ -4,7 +4,8 @@
 
 from typing import List, Optional
 
-from iota.crypto import Curl, HASH_LENGTH
+from iota.crypto import HASH_LENGTH
+from iota.crypto.kerl import Kerl
 from iota.crypto.types import Digest
 from iota.multisig.types import MultisigAddress
 
@@ -39,7 +40,7 @@ def __init__(self):
     only generate a single address.
     """
 
-    self._sponge = Curl()
+    self._sponge = Kerl()
 
   def add_digest(self, digest):
     # type: (Digest) -> None

iota/transaction/base.py

@@ -7,7 +7,8 @@
   Optional, Sequence, Text
 
 from iota.codecs import TrytesDecodeError
-from iota.crypto import Curl, HASH_LENGTH
+from iota.crypto import HASH_LENGTH
+from iota.crypto.kerl import Kerl
 from iota.json import JsonSerializable
 from iota.transaction.types import BundleHash, Fragment, TransactionHash, \
   TransactionTrytes
@@ -42,7 +43,7 @@ def from_tryte_string(cls, trytes, hash_=None):
     if not hash_:
       hash_trits = [0] * HASH_LENGTH # type: MutableSequence[int]
 
-      sponge = Curl()
+      sponge = Kerl()
       sponge.absorb(tryte_string.as_trits())
       sponge.squeeze(hash_trits)
 

iota/transaction/creation.py

@@ -7,7 +7,8 @@
 
 from six import PY2
 
-from iota.crypto import Curl, HASH_LENGTH
+from iota.crypto import HASH_LENGTH
+from iota.crypto.kerl import Kerl
 from iota.crypto.signing import KeyGenerator
 from iota.crypto.types import PrivateKey
 from iota.exceptions import with_context
@@ -310,7 +311,7 @@ def finalize(self):
       )
 
     # Generate bundle hash.
-    sponge      = Curl()
+    sponge      = Kerl()
     last_index  = len(self) - 1
 
     for (i, txn) in enumerate(self): # type: Tuple[int, ProposedTransaction]

iota/types.py

@@ -13,7 +13,8 @@
   text_type
 
 from iota import TRITS_PER_TRYTE, TrytesCodec
-from iota.crypto import Curl, HASH_LENGTH
+from iota.crypto import HASH_LENGTH
+from iota.crypto.kerl import Kerl
 from iota.exceptions import with_context
 from iota.json import JsonSerializable
 
@@ -790,7 +791,7 @@ def _generate_checksum(self):
     """
     checksum_trits = [] # type: MutableSequence[int]
 
-    sponge = Curl()
+    sponge = Kerl()
     sponge.absorb(self.address.as_trits())
     sponge.squeeze(checksum_trits)