Merge pull request #26 from nsivraj/master

Fix SHA512 bug on Android and then added SHA512 if statement to iOS.

Author: ghbutton

android/src/main/java/com/pedrouid/crypto/RCTRsa.java

@@ -38,8 +38,10 @@ private String getAlgorithmFromHash(final String hash) {
         return "SHA256withRSA";
     } else if (hash.equals("SHA384")) {
         return "SHA384withRSA";
+    } else if (hash.equals("SHA512")) {
+        return "SHA512withRSA";
     } else {
-        return "SHA1withRSA";
+        return "SHA512withRSA";
     }
 }
 

ios/RCTCrypto/RCTRsa.m

@@ -23,6 +23,8 @@ + (SecKeyAlgorithm)getAlgorithmFromHash:(NSString *)hash {
         return kSecKeyAlgorithmRSASignatureMessagePKCS1v15SHA256;
     } else if ([hash isEqualToString:@"SHA384"]) {
         return kSecKeyAlgorithmRSASignatureMessagePKCS1v15SHA384;
+    } else if ([hash isEqualToString:@"SHA512"]) {
+        return kSecKeyAlgorithmRSASignatureMessagePKCS1v15SHA512;
     } else {
         return kSecKeyAlgorithmRSASignatureMessagePKCS1v15SHA512;
     }