2 files changed, 16 insertions, 7 deletions
diff --git a/luni/src/main/java/java/security/Signature.java b/luni/src/main/java/java/security/Signature.java
index 8c056c0..e70898b 100644
--- a/luni/src/main/java/java/security/Signature.java
+++ b/luni/src/main/java/java/security/Signature.java
@@ -637,11 +637,14 @@ public abstract class Signature extends SignatureSpi {
          */
         private final Object initLock = new Object();
 
+        // The provider specified when creating this instance.
+        private final Provider specifiedProvider;
+
         private SignatureSpi spiImpl;
 
         public SignatureImpl(String algorithm, Provider provider) {
             super(algorithm);
-            super.provider = provider;
+            this.specifiedProvider = provider;
         }
 
         private SignatureImpl(String algorithm, Provider provider, SignatureSpi spi) {
@@ -715,11 +718,11 @@ public abstract class Signature extends SignatureSpi {
          */
         private SignatureSpi getSpi(Key key) {
             synchronized (initLock) {
-                if (spiImpl != null) {
+                if (spiImpl != null && key == null) {
                     return spiImpl;
                 }
 
-                final Engine.SpiAndProvider sap = tryAlgorithm(key, provider, algorithm);
+                final Engine.SpiAndProvider sap = tryAlgorithm(key, specifiedProvider, algorithm);
                 if (sap == null) {
                     throw new ProviderException("No provider for " + getAlgorithm());
                 }
diff --git a/luni/src/main/java/javax/crypto/Cipher.java b/luni/src/main/java/javax/crypto/Cipher.java
index 2c1feeb..9bca45e 100644
--- a/luni/src/main/java/javax/crypto/Cipher.java
+++ b/luni/src/main/java/javax/crypto/Cipher.java
@@ -129,6 +129,11 @@ public class Cipher {
     private Provider provider;
 
     /**
+     * The provider specified when instance created.
+     */
+    private final Provider specifiedProvider;
+
+    /**
      * The SPI implementation.
      */
     private CipherSpi spiImpl;
@@ -170,7 +175,7 @@ public class Cipher {
         if (!(cipherSpi instanceof NullCipherSpi) && provider == null) {
             throw new NullPointerException("provider == null");
         }
-        this.provider = provider;
+        this.specifiedProvider = provider;
         this.spiImpl = cipherSpi;
         this.transformation = transformation;
         this.transformParts = null;
@@ -179,7 +184,7 @@ public class Cipher {
     private Cipher(String transformation, String[] transformParts, Provider provider) {
         this.transformation = transformation;
         this.transformParts = transformParts;
-        this.provider = provider;
+        this.specifiedProvider = provider;
     }
 
 
@@ -332,11 +337,12 @@ public class Cipher {
      */
     private CipherSpi getSpi(Key key) {
         synchronized (initLock) {
-            if (spiImpl != null) {
+            if (spiImpl != null && key == null) {
                 return spiImpl;
             }
 
-            final Engine.SpiAndProvider sap = tryCombinations(key, provider, transformParts);
+            final Engine.SpiAndProvider sap = tryCombinations(key, specifiedProvider,
+                    transformParts);
             if (sap == null) {
                 throw new ProviderException("No provider for " + transformation);
             }