remove openssl fallback for ripemd160, always use pure-python implementation

Author: windsok

bitcoin/core/serialize.py

@@ -20,6 +20,8 @@
 
 from io import BytesIO
 
+from bitcoin.core.contrib.ripemd160 import ripemd160
+
 MAX_SIZE = 0x02000000
 
 
@@ -29,17 +31,6 @@ def Hash(msg):
 
 def Hash160(msg):
     """RIPEME160(SHA256(msg)) -> bytes"""
-    try:
-        # This will fail with newer versions of OpenSSL such as included in
-        # Ubuntu 22.04 as OpenSSL no longer includes ripemd160 by default.
-        hashlib.new('ripemd160')
-        def ripemd160(msg):
-            return hashlib.new('ripemd160', msg).digest()
-    except:
-        # If OpenSSL ripemd160 provided by hashlib fails, use the pure
-        # python implementation instead
-        from bitcoin.core.contrib.ripemd160 import ripemd160
-
     return ripemd160(hashlib.sha256(msg).digest())
 
 class SerializationError(Exception):