From 2d20df2c4f9fb392ffb31bc9c0fa00a5e93d506f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jan=20Ko=C5=BEusznik?= <jan@kozusznik.cz>
Date: Tue, 4 May 2021 15:05:13 +0200
Subject: [PATCH] Use CipherInput(Output)Stream for RSA Cipher
---
.gitignore | 1 +
pom.enc | Bin 0 -> 3472 bytes
pom.txt | 89 ++++++++++++++++++
pom.xml | 41 ++++----
.../java/java2/koz01/lab13/Lab13Decrypt.java | 50 +++++-----
.../java/java2/koz01/lab13/Lab13Encrypt.java | 14 +--
.../lab13/NoClosingFilterInputStream.java | 18 ++++
.../lab13/NoClosingFilterOutputStream.java | 18 ++++
.../java2/koz01/lab13/OutputStreamApp.java | 42 +++++++++
src/main/java/module-info.java | 1 +
10 files changed, 226 insertions(+), 48 deletions(-)
create mode 100644 pom.enc
create mode 100644 pom.txt
create mode 100644 src/main/java/java2/koz01/lab13/NoClosingFilterInputStream.java
create mode 100644 src/main/java/java2/koz01/lab13/NoClosingFilterOutputStream.java
create mode 100644 src/main/java/java2/koz01/lab13/OutputStreamApp.java
diff --git a/.gitignore b/.gitignore
index 1ccc1d3..f1bf236 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,3 +16,4 @@
derby.log
/db/
/output/
+/keys.rsa
diff --git a/pom.enc b/pom.enc
new file mode 100644
index 0000000000000000000000000000000000000000..af311df8b979876ecbaf39c812da821adc49625d
GIT binary patch
literal 3472
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zx|!Udyx;Gy&-*7_=bYc=r@xB{%SDC1c*<So8z=lLWys_rpsmS`&kHuuyBm?VCK;OR
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literal 0
HcmV?d00001
diff --git a/pom.txt b/pom.txt
new file mode 100644
index 0000000..3948263
--- /dev/null
+++ b/pom.txt
@@ -0,0 +1,89 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+ xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+ <modelVersion>4.0.0</modelVersion>
+ <groupId>java2.koz01</groupId>
+ <artifactId>lab13</artifactId>
+ <version>0.0.1-SNAPSHOT</version>
+ <packaging>jar</packaging>
+ <properties>
+ <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+ <maven.compiler.source>15</maven.compiler.source>
+ <maven.compiler.target>15</maven.compiler.target>
+ <maven.compiler.version>3.8.1</maven.compiler.version>
+ <javafx.version>15.0.1</javafx.version>
+ <junit.version>5.7.1</junit.version>
+ <log4j.version>2.14.1</log4j.version>
+ <lombok.version>1.18.20</lombok.version>
+ </properties>
+ <dependencies>
+ <dependency>
+ <groupId>org.openjfx</groupId>
+ <artifactId>javafx-controls</artifactId>
+ <version>${javafx.version}</version>
+ </dependency>
+ <dependency>
+ <groupId>org.openjfx</groupId>
+ <artifactId>javafx-fxml</artifactId>
+ <version>${javafx.version}</version>
+ </dependency>
+ <!-- https://mvnrepository.com/artifact/org.junit.jupiter/junit-jupiter-api -->
+ <dependency>
+ <groupId>org.junit.jupiter</groupId>
+ <artifactId>junit-jupiter-api</artifactId>
+ <version>${junit.version}</version>
+ <scope>test</scope>
+ </dependency>
+ <!-- https://mvnrepository.com/artifact/org.junit.jupiter/junit-jupiter-engine -->
+ <dependency>
+ <groupId>org.junit.jupiter</groupId>
+ <artifactId>junit-jupiter-engine</artifactId>
+ <version>${junit.version}</version>
+ <scope>test</scope>
+ </dependency>
+ <!-- https://mvnrepository.com/artifact/org.junit.jupiter/junit-jupiter-params -->
+ <dependency>
+ <groupId>org.junit.jupiter</groupId>
+ <artifactId>junit-jupiter-params</artifactId>
+ <version>${junit.version}</version>
+ <scope>test</scope>
+ </dependency>
+ <!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
+ <dependency>
+ <groupId>org.projectlombok</groupId>
+ <artifactId>lombok</artifactId>
+ <version>${lombok.version}</version>
+ <scope>provided</scope>
+ </dependency>
+ <!-- https://mvnrepository.com/artifact/org.apache.logging.log4j/log4j-api -->
+ <dependency>
+ <groupId>org.apache.logging.log4j</groupId>
+ <artifactId>log4j-api</artifactId>
+ <version>${log4j.version}</version>
+ </dependency>
+ <!-- https://mvnrepository.com/artifact/org.apache.logging.log4j/log4j-api -->
+ <dependency>
+ <groupId>org.apache.logging.log4j</groupId>
+ <artifactId>log4j-core</artifactId>
+ <version>${log4j.version}</version>
+ </dependency>
+ </dependencies>
+ <build>
+ <plugins>
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-compiler-plugin</artifactId>
+ <version>${maven.compiler.version}</version>
+ <configuration>
+ <annotationProcessorPaths>
+ <path>
+ <groupId>org.projectlombok</groupId>
+ <artifactId>lombok</artifactId>
+ <version>${lombok.version}</version>
+ </path>
+ </annotationProcessorPaths>
+ </configuration>
+ </plugin>
+ </plugins>
+ </build>
+</project>
diff --git a/pom.xml b/pom.xml
index 3948263..764e23e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -50,40 +50,47 @@
</dependency>
<!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
<dependency>
- <groupId>org.projectlombok</groupId>
- <artifactId>lombok</artifactId>
- <version>${lombok.version}</version>
- <scope>provided</scope>
+ <groupId>org.projectlombok</groupId>
+ <artifactId>lombok</artifactId>
+ <version>${lombok.version}</version>
+ <scope>provided</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.logging.log4j/log4j-api -->
<dependency>
- <groupId>org.apache.logging.log4j</groupId>
- <artifactId>log4j-api</artifactId>
- <version>${log4j.version}</version>
+ <groupId>org.apache.logging.log4j</groupId>
+ <artifactId>log4j-api</artifactId>
+ <version>${log4j.version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.logging.log4j/log4j-api -->
<dependency>
- <groupId>org.apache.logging.log4j</groupId>
- <artifactId>log4j-core</artifactId>
- <version>${log4j.version}</version>
+ <groupId>org.apache.logging.log4j</groupId>
+ <artifactId>log4j-core</artifactId>
+ <version>${log4j.version}</version>
</dependency>
+ <!-- https://mvnrepository.com/artifact/commons-io/commons-io -->
+ <dependency>
+ <groupId>commons-io</groupId>
+ <artifactId>commons-io</artifactId>
+ <version>2.8.0</version>
+ </dependency>
+
</dependencies>
<build>
<plugins>
<plugin>
- <groupId>org.apache.maven.plugins</groupId>
- <artifactId>maven-compiler-plugin</artifactId>
- <version>${maven.compiler.version}</version>
- <configuration>
- <annotationProcessorPaths>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-compiler-plugin</artifactId>
+ <version>${maven.compiler.version}</version>
+ <configuration>
+ <annotationProcessorPaths>
<path>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${lombok.version}</version>
</path>
</annotationProcessorPaths>
- </configuration>
- </plugin>
+ </configuration>
+ </plugin>
</plugins>
</build>
</project>
diff --git a/src/main/java/java2/koz01/lab13/Lab13Decrypt.java b/src/main/java/java2/koz01/lab13/Lab13Decrypt.java
index 1af91c7..c7ab5e6 100644
--- a/src/main/java/java2/koz01/lab13/Lab13Decrypt.java
+++ b/src/main/java/java2/koz01/lab13/Lab13Decrypt.java
@@ -1,3 +1,4 @@
+
package java2.koz01.lab13;
import java.io.FileInputStream;
@@ -10,13 +11,13 @@ import java.security.KeyPair;
import java.security.NoSuchAlgorithmException;
import java.security.spec.InvalidKeySpecException;
-import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.CipherInputStream;
-import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.spec.SecretKeySpec;
+import org.apache.commons.io.input.BoundedInputStream;
+
import lombok.extern.log4j.Log4j2;
@Log4j2
@@ -24,34 +25,35 @@ public class Lab13Decrypt {
public static void main(String[] args) throws InvalidKeyException,
NoSuchAlgorithmException, NoSuchPaddingException, IOException,
- InvalidKeySpecException, IllegalBlockSizeException, BadPaddingException
+ InvalidKeySpecException
{
KeyPairLoader keyPairLoader = new KeyPairLoader();
KeyPair kp = keyPairLoader.load("keys.rsa");
-
-
- InputStream nis = new FileInputStream(args[0]);
- Cipher aCipher = Cipher.getInstance("RSA");
- aCipher.init(Cipher.DECRYPT_MODE, kp.getPrivate());
- byte[] encrypted = new byte[256];
- nis.read(encrypted);
- byte[] keyData = aCipher.doFinal(encrypted);
- SecretKeySpec skp = new SecretKeySpec(keyData, "AES");
-
- Cipher cipher = Cipher.getInstance("AES");
- cipher.init(Cipher.DECRYPT_MODE, skp);
-
-
- try (InputStream is = new CipherInputStream(nis,
- cipher);
- OutputStream os = new FileOutputStream(args[1]))
+ try (InputStream nis = new FileInputStream(args[0]);
+ OutputStream os = new FileOutputStream(args[1]))
{
- byte [] buffer = new byte[1024];
- int len;
- while (-1 != (len = is.read(buffer))) {
- os.write(buffer, 0, len);
+ Cipher cipher = Cipher.getInstance("AES");
+ Cipher aCipher = Cipher.getInstance("RSA");
+ aCipher.init(Cipher.DECRYPT_MODE, kp.getPrivate());
+ try (InputStream rsaIs = new CipherInputStream(
+ new NoClosingFilterInputStream(new BoundedInputStream(nis, 256)),
+ aCipher))
+ {
+ byte[] keyData = new byte[32];
+ rsaIs.read(keyData);
+ SecretKeySpec skp = new SecretKeySpec(keyData, "AES");
+ cipher.init(Cipher.DECRYPT_MODE, skp);
+ }
+ try (InputStream is = new CipherInputStream(
+ new NoClosingFilterInputStream(nis), cipher);)
+ {
+ byte[] buffer = new byte[1024];
+ int len;
+ while (-1 != (len = is.read(buffer))) {
+ os.write(buffer, 0, len);
+ }
}
}
log.info("decrypted");
diff --git a/src/main/java/java2/koz01/lab13/Lab13Encrypt.java b/src/main/java/java2/koz01/lab13/Lab13Encrypt.java
index 6acb767..46ae590 100644
--- a/src/main/java/java2/koz01/lab13/Lab13Encrypt.java
+++ b/src/main/java/java2/koz01/lab13/Lab13Encrypt.java
@@ -10,10 +10,8 @@ import java.security.KeyPair;
import java.security.NoSuchAlgorithmException;
import java.security.spec.InvalidKeySpecException;
-import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.CipherOutputStream;
-import javax.crypto.IllegalBlockSizeException;
import javax.crypto.KeyGenerator;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;
@@ -25,7 +23,7 @@ public class Lab13Encrypt {
public static void main(String[] args) throws NoSuchAlgorithmException,
IOException, NoSuchPaddingException, InvalidKeyException,
- InvalidKeySpecException, IllegalBlockSizeException, BadPaddingException
+ InvalidKeySpecException
{
KeyPairLoader keyPairLoader = new KeyPairLoader();
@@ -54,10 +52,12 @@ public class Lab13Encrypt {
Cipher aCipher = Cipher.getInstance("RSA");
aCipher.init(Cipher.ENCRYPT_MODE, kp.getPublic());
log.info("size of key {}", sk.getEncoded().length);
- byte[] encrypted = aCipher.doFinal(sk.getEncoded());
- log.info("size of encrypted {}", encrypted.length);
- nos.write(encrypted);
- nos.flush();
+
+ try (OutputStream rsaOs = new CipherOutputStream(
+ new NoClosingFilterOutputStream(nos), aCipher))
+ {
+ rsaOs.write(sk.getEncoded());
+ }
int len;
while (-1 != (len = is.read(buffer))) {
os.write(buffer, 0, len);
diff --git a/src/main/java/java2/koz01/lab13/NoClosingFilterInputStream.java b/src/main/java/java2/koz01/lab13/NoClosingFilterInputStream.java
new file mode 100644
index 0000000..9966243
--- /dev/null
+++ b/src/main/java/java2/koz01/lab13/NoClosingFilterInputStream.java
@@ -0,0 +1,18 @@
+package java2.koz01.lab13;
+
+import java.io.FilterInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+class NoClosingFilterInputStream extends FilterInputStream {
+
+ public NoClosingFilterInputStream(InputStream in) {
+ super(in);
+ }
+
+ @Override
+ public void close() throws IOException {
+
+ }
+
+}
diff --git a/src/main/java/java2/koz01/lab13/NoClosingFilterOutputStream.java b/src/main/java/java2/koz01/lab13/NoClosingFilterOutputStream.java
new file mode 100644
index 0000000..eeef692
--- /dev/null
+++ b/src/main/java/java2/koz01/lab13/NoClosingFilterOutputStream.java
@@ -0,0 +1,18 @@
+package java2.koz01.lab13;
+
+import java.io.FilterOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+
+class NoClosingFilterOutputStream extends FilterOutputStream {
+
+ public NoClosingFilterOutputStream(OutputStream out) {
+ super(out);
+ }
+
+ @Override
+ public void close() throws IOException {
+ flush();
+ }
+
+}
diff --git a/src/main/java/java2/koz01/lab13/OutputStreamApp.java b/src/main/java/java2/koz01/lab13/OutputStreamApp.java
new file mode 100644
index 0000000..f321e10
--- /dev/null
+++ b/src/main/java/java2/koz01/lab13/OutputStreamApp.java
@@ -0,0 +1,42 @@
+package java2.koz01.lab13;
+
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.security.InvalidKeyException;
+import java.security.KeyPair;
+import java.security.KeyPairGenerator;
+import java.security.NoSuchAlgorithmException;
+
+import javax.crypto.Cipher;
+import javax.crypto.CipherOutputStream;
+import javax.crypto.NoSuchPaddingException;
+
+import lombok.extern.log4j.Log4j2;
+
+@Log4j2
+public class OutputStreamApp {
+
+ public static void main(String[] args) throws NoSuchAlgorithmException,
+ NoSuchPaddingException, FileNotFoundException, IOException,
+ InvalidKeyException
+ {
+ KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA");
+ kpg.initialize(2048);
+ KeyPair kp = kpg.generateKeyPair();
+
+ log.info("private: {}", kp.getPrivate());
+ log.info("public: {}", kp.getPublic());
+ Cipher cipher = Cipher.getInstance("RSA");
+ cipher.init(Cipher.ENCRYPT_MODE, kp.getPublic());
+ for (int i = 200; i < 257; i++) {
+ try (OutputStream os = new CipherOutputStream(new FileOutputStream("out" +
+ i + ".enc"), cipher))
+ {
+ byte[] data = new byte[i];
+ os.write(data);
+ }
+ }
+ }
+}
diff --git a/src/main/java/module-info.java b/src/main/java/module-info.java
index b9bed9f..415a9ea 100644
--- a/src/main/java/module-info.java
+++ b/src/main/java/module-info.java
@@ -3,4 +3,5 @@ module java2.koz01.lab13 {
requires lombok;
requires org.apache.logging.log4j;
+ requires org.apache.commons.io;
}
\ No newline at end of file
--
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