Merge branch 'hassony105-master'

Author: Ephenodrom

lib/macs/cbc_block_cipher_mac.dart

@@ -100,7 +100,7 @@ class CBCBlockCipherMac extends BaseMac {
 
   @override
   String get algorithmName {
-    var paddingName = _padding != null ? '/${_padding!.algorithmName}' : '';
+    var paddingName = _padding != null ? '/${_padding.algorithmName}' : '';
     return '${_cipher.algorithmName}_CMAC$paddingName';
   }
 
@@ -200,7 +200,7 @@ class CBCBlockCipherMac extends BaseMac {
         _bufOff = 0;
       }
 
-      _padding!.addPadding(_buf, _bufOff);
+      _padding.addPadding(_buf, _bufOff);
     }
 
     _cipher.processBlock(_buf, 0, _mac, 0);

lib/signers/ecdsa_signer.dart

@@ -91,7 +91,7 @@ class ECDSASigner implements Signer {
 
     dynamic kCalculator;
     if (_kMac != null) {
-      kCalculator = _RFC6979KCalculator(_kMac!, n, _pvkey!.d!, message);
+      kCalculator = _RFC6979KCalculator(_kMac, n, _pvkey!.d!, message);
     } else {
       kCalculator = _RandomKCalculator(n, _random!);
     }
@@ -163,8 +163,8 @@ class ECDSASigner implements Signer {
 
   Uint8List _hashMessageIfNeeded(Uint8List message) {
     if (_digest != null) {
-      _digest!.reset();
-      return _digest!.process(message);
+      _digest.reset();
+      return _digest.process(message);
     } else {
       return message;
     }