hadoop-crypto no longer depends on commons-crypto or openssl

Author: Carter Kozak

README.md

@@ -187,44 +187,3 @@ Hadoop Configuration Properties
 License
 -------
 This repository is made available under the [Apache 2.0 License](http://www.apache.org/licenses/LICENSE-2.0).
-
-
-FAQ
----
-
-## log.warn lines from `CryptoStreamFactory`
-
-`WARN: Unable to initialize cipher with OpenSSL, falling back to JCE implementation`
-
-'Falling back to the JCE implementation' results in slower cipher performance than native OpenSSL. Resolve this by installing a compatible OpenSSL and symlinking it to the correct location, `/usr/lib/libcrypto.so`. (OpenSSL 1.0 and 1.1 are currently supported)
-
-_Note: to support OpenSSL 1.1, we use releases from the [Palantir fork of commons-crypto](https://github.com/palantir/commons-crypto/releases) as support has been added to the mainline Apache repo, but no release made [since 2016](https://github.com/apache/commons-crypto/releases)._
-
-```
-Exception in thread "main" java.io.IOException: java.security.GeneralSecurityException: CryptoCipher {org.apache.commons.crypto.cipher.OpenSslCipher} is not available or transformation AES/CTR/NoPadding is not supported.
-	at org.apache.commons.crypto.utils.Utils.getCipherInstance(Utils.java:130)
-	at ApacheCommonsCryptoLoad.main(ApacheCommonsCryptoLoad.java:10)
-Caused by: java.security.GeneralSecurityException: CryptoCipher {org.apache.commons.crypto.cipher.OpenSslCipher} is not available or transformation AES/CTR/NoPadding is not supported.
-	at org.apache.commons.crypto.cipher.CryptoCipherFactory.getCryptoCipher(CryptoCipherFactory.java:176)
-	at org.apache.commons.crypto.utils.Utils.getCipherInstance(Utils.java:128)
-	... 1 more
-Caused by: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
-	at org.apache.commons.crypto.utils.ReflectionUtils.newInstance(ReflectionUtils.java:90)
-	at org.apache.commons.crypto.cipher.CryptoCipherFactory.getCryptoCipher(CryptoCipherFactory.java:160)
-	... 2 more
-Caused by: java.lang.reflect.InvocationTargetException
-	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
-	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
-	at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
-	at java.base/java.lang.reflect.Constructor.newInstance(Unknown Source)
-	at org.apache.commons.crypto.utils.ReflectionUtils.newInstance(ReflectionUtils.java:88)
-	... 3 more
-Caused by: java.lang.RuntimeException: java.lang.UnsatisfiedLinkError: EVP_CIPHER_CTX_cleanup
-	at org.apache.commons.crypto.cipher.OpenSslCipher.<init>(OpenSslCipher.java:59)
-	... 8 more
-Caused by: java.lang.UnsatisfiedLinkError: EVP_CIPHER_CTX_cleanup
-	at org.apache.commons.crypto.cipher.OpenSslNative.initIDs(Native Method)
-	at org.apache.commons.crypto.cipher.OpenSsl.<clinit>(OpenSsl.java:95)
-	at org.apache.commons.crypto.cipher.OpenSslCipher.<init>(OpenSslCipher.java:57)
-	... 8 more
-```

crypto-core/build.gradle

@@ -1,12 +1,8 @@
-apply from: "${rootDir}/gradle/openssl.gradle"
-
 dependencies {
     compile project(':crypto-keys')
 
     compile "com.google.guava:guava"
     compile "com.palantir.seek-io:seek-io"
-    compile "org.apache.commons:commons-crypto"
-    implementation "org.slf4j:slf4j-api"
 
     annotationProcessor 'org.openjdk.jmh:jmh-generator-annprocess'
     compileOnly 'org.openjdk.jmh:jmh-generator-annprocess'

crypto-core/src/main/java/com/palantir/crypto2/cipher/ApacheCiphers.java

@@ -17,19 +17,22 @@
 package com.palantir.crypto2.cipher;
 
 import java.util.Properties;
-import org.apache.commons.crypto.cipher.CryptoCipherFactory;
 
 public final class ApacheCiphers {
 
     private ApacheCiphers() {}
 
     /**
-     * Configures the provided {@link Properties} such that {@link CryptoCipherFactory#getCryptoCipher(String,
-     * Properties)} will only try to use the OpenSSL cipher implementation which uses AES-NI.
+     * Does nothing.
+     *
+     * Previously configured the provided {@link Properties} such that
+     * {@code CryptoCipherFactory#getCryptoCipher(String, Properties)} will only try to use the OpenSSL cipher
+     * implementation which uses AES-NI.
+     *
+     * @deprecated Exists for abi compatibility, no longer does anything.
      */
+    @Deprecated
     public static Properties forceOpenSsl(Properties properties) {
-        properties.setProperty(CryptoCipherFactory.CLASSES_KEY,
-                CryptoCipherFactory.CipherProvider.OPENSSL.getClassName());
         return properties;
     }
 

crypto-core/src/main/java/com/palantir/crypto2/io/ApacheCtrDecryptingSeekableInput.java

@@ -16,8 +16,6 @@
 
 package com.palantir.crypto2.io;
 
-import com.google.common.annotations.VisibleForTesting;
-import com.palantir.crypto2.cipher.ApacheCiphers;
 import com.palantir.crypto2.cipher.SeekableCipher;
 import com.palantir.crypto2.cipher.SeekableCipherFactory;
 import com.palantir.crypto2.keys.KeyMaterial;
@@ -26,48 +24,19 @@
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
-import java.util.Properties;
 import javax.crypto.Cipher;
 import javax.crypto.CipherOutputStream;
-import javax.crypto.SecretKey;
-import org.apache.commons.crypto.stream.CtrCryptoOutputStream;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 public final class CryptoStreamFactory {
 
-    private static final Logger log = LoggerFactory.getLogger(CryptoStreamFactory.class);
-    private static final Properties PROPS = ApacheCiphers.forceOpenSsl(new Properties());
-    private static final String AES_ALGORITHM = "AES/CTR/NoPadding";
-    private static final String OPEN_SSL_INIT_WARNING = "Unable to initialize cipher with OpenSSL, falling back to "
-            + "JCE implementation - see github.com/palantir/hadoop-crypto#faq";
-
-    private static volatile boolean fullExceptionLoggedAlready = false;
-
     private CryptoStreamFactory() {}
 
     /**
      * Returns a {@link SeekableInput} that decrypts the given SeekableInput using the given {@link KeyMaterial} and
      * cipher {@code algorithm}. When OpenSSL is available an implementation that uses AES-NI will be returned.
      */
     public static SeekableInput decrypt(SeekableInput encryptedInput, KeyMaterial keyMaterial, String algorithm) {
-        return decrypt(encryptedInput, keyMaterial, algorithm, false);
-    }
-
-    @SuppressWarnings("CatchBlockLogException")
-    @VisibleForTesting
-    static SeekableInput decrypt(
-            SeekableInput encryptedInput, KeyMaterial keyMaterial, String algorithm, boolean forceJce) {
-        if (!algorithm.equals(AES_ALGORITHM) || forceJce) {
-            return new DecryptingSeekableInput(encryptedInput, SeekableCipherFactory.getCipher(algorithm, keyMaterial));
-        }
-
-        try {
-            return new ApacheCtrDecryptingSeekableInput(encryptedInput, keyMaterial);
-        } catch (IOException e) {
-            warningLog(e);
-            return new DecryptingSeekableInput(encryptedInput, SeekableCipherFactory.getCipher(algorithm, keyMaterial));
-        }
+        return new DecryptingSeekableInput(encryptedInput, SeekableCipherFactory.getCipher(algorithm, keyMaterial));
     }
 
     /**
@@ -83,39 +52,7 @@ public static InputStream decrypt(InputStream input, KeyMaterial keyMaterial, St
      * cipher {@code algorithm}. When OpenSSL is available an implementation that uses AES-NI will be returned.
      */
     public static OutputStream encrypt(OutputStream output, KeyMaterial keyMaterial, String algorithm) {
-        return encrypt(output, keyMaterial, algorithm, false);
-    }
-
-    @SuppressWarnings("CatchBlockLogException")
-    @VisibleForTesting
-    static OutputStream encrypt(OutputStream output, KeyMaterial keyMaterial, String algorithm, boolean forceJce) {
-        if (!algorithm.equals(AES_ALGORITHM) || forceJce) {
-            return createDefaultEncryptedStream(output, keyMaterial, algorithm);
-        }
-
-        try {
-            return createApacheEncryptedStream(output, keyMaterial);
-        } catch (IOException e) {
-            warningLog(e);
-            return createDefaultEncryptedStream(output, keyMaterial, algorithm);
-        }
-    }
-
-    /** To avoid spamming logs with exceptions, we only log the exception once. */
-    private static void warningLog(IOException exception) {
-        if (fullExceptionLoggedAlready) {
-            log.warn(OPEN_SSL_INIT_WARNING);
-        } else {
-            log.warn(OPEN_SSL_INIT_WARNING, exception);
-            fullExceptionLoggedAlready = true;
-        }
-    }
-
-    private static OutputStream createApacheEncryptedStream(OutputStream output, KeyMaterial keyMaterial)
-            throws IOException {
-        SecretKey secretKey = keyMaterial.getSecretKey();
-        byte[] iv = keyMaterial.getIv();
-        return new CtrCryptoOutputStream(PROPS, output, secretKey.getEncoded(), iv);
+        return createDefaultEncryptedStream(output, keyMaterial, algorithm);
     }
 
     private static OutputStream createDefaultEncryptedStream(OutputStream output, KeyMaterial keyMaterial,