fix(dafny): BKS names (#1483)

Author: texastony

AwsCryptographicMaterialProviders/dafny/AwsCryptographyKeyStore/src/CreateKeys.dfy

@@ -359,14 +359,14 @@ module {:options "/functionSyntax:4" } CreateKeys {
 
     // get plaintext data key by calling kms::GenerateDataKey
     var activePlaintextMaterial :- KMSKeystoreOperations.GetPlaintextDataKeyViaGenerateDataKey(
-      branchKeyContext := ecToKMS,
+      encryptionContext := ecToKMS,
       kmsConfiguration := kmsConfiguration,
       keyManagerAndStorage := keyManagerAndStorage
     );
 
     // get beacon key by calling kms::GenerateDataKey
     var beaconPlaintextMaterial :- KMSKeystoreOperations.GetPlaintextDataKeyViaGenerateDataKey(
-      branchKeyContext := ecToKMS,
+      encryptionContext := ecToKMS,
       kmsConfiguration := kmsConfiguration,
       keyManagerAndStorage := keyManagerAndStorage
     );
@@ -749,7 +749,7 @@ module {:options "/functionSyntax:4" } CreateKeys {
     );
 
     var newActivePlaintextMaterial :- KMSKeystoreOperations.GetPlaintextDataKeyViaGenerateDataKey(
-      branchKeyContext := ecToKMS,
+      encryptionContext := ecToKMS,
       kmsConfiguration := kmsConfiguration,
       keyManagerAndStorage := keyManagerAndStorage
     );

AwsCryptographicMaterialProviders/dafny/AwsCryptographyKeyStore/src/KMSKeystoreOperations.dfy

@@ -149,7 +149,7 @@ module {:options "/functionSyntax:4" } KMSKeystoreOperations {
               && KMS.GenerateDataKeyRequest(
                    KeyId := kmsKeyArn,
                    NumberOfBytes := Some(32),
-                   EncryptionContext := Some(branchKeyContext),
+                   EncryptionContext := Some(encryptionContext),
                    GrantTokens := Some(keyManagerAndStorage.keyManagerStrat.kmsSimple.grantTokens)
                  ) == kmsGenerateDataKeyEvent.input
               && kmsGenerateDataKeyEvent.output.Success?
@@ -163,7 +163,7 @@ module {:options "/functionSyntax:4" } KMSKeystoreOperations {
     var generateDataKeyInput := KMS.GenerateDataKeyRequest(
       KeyId := kmsKeyArn,
       NumberOfBytes := Some(32),
-      EncryptionContext := Some(branchKeyContext),
+      EncryptionContext := Some(encryptionContext),
       GrantTokens := Some(keyManagerAndStorage.keyManagerStrat.kmsSimple.grantTokens)
     );