Merge pull request #1 in ~JDVEGA/format-preserving-encryption from develop to master

* commit '8dcfd34d73b2a012a493adcfce7714ed0aae4793': (134 commits)
  remove explicit round indexes
  move validation to object creation
  include CI/CD configuration. mission osshr user/pass
  add logo and badge
  add distribution management
  fix: section 5.1 describe relation between radix and minlenth as greater or equal to 100
  remove extra spaces or new lines
  replace magic elements with constants
  remove extra new lines
  remove this
  rename: throws -> throw
  refactor: add number of test as constant
  fix typos and style issues
  fix code block format
  typo readme
  add empty changelog
  add logo
  configure test on mvn package
  configure test on mvn package
  fix misspelling "radom"
  ...

Author: Juan David Vega Rodríguez

.gitignore

@@ -2,3 +2,6 @@
 .project
 .settings/
 target/
+.idea/
+*.iml
+*.asc

.travis.yml

@@ -0,0 +1,18 @@
+language: java
+
+install: mvn install -P !build-extras -DskipTests=true -Dmaven.javadoc.skip=true -B -V
+
+script: mvn test -P !build-extras -B
+
+cache:
+  directories:
+  - "~/.m2/repository"
+
+after_success:
+- "./buld/before-deploy.sh"
+- "./buld/deploy.sh"
+
+env:
+  global:
+  - secure: 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
+  - secure: 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

CHANGELOG.md

@@ -0,0 +1,11 @@
+# Change Log
+All notable changes to this project will be documented in this file.
+This project adheres to [Semantic Versioning](http://semver.org/) and [Keep a changelog](https://github.com/olivierlacan/keep-a-changelog).
+
+## [Unreleased](https://github.com/idealista/format-preserving-encryption-java/tree/develop)
+
+## [1.0.0](https://github.com/idealista/format-preserving-encryption-java/tree/1.0.0) (2017-)
+
+### Added
+- *FF1 implementation* @jdvr
+

LICENSE.txt

@@ -0,0 +1,202 @@
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README.md

@@ -0,0 +1,114 @@
+![Logo](logo.gif)
+[![Build Status](https://travis-ci.org/idealista/format-preserving-encryption-java.svg?branch=master)](https://travis-ci.org/idealista/format-preserving-encryption-java)
+# fpe - Format Preserving Encryption Implementation in Java
+
+Format-preserving encryption (FPE) is designed for data that is not necessarily binary. In particular, given any finite set of symbols, like the decimal numerals, a method for FPE transforms data that is formatted as a sequence of the symbols in such a way that the encrypted form of the data has the same format, including the length, as the original data. Thus, an FPE-encrypted SSN would be a sequence of nine decimal digits.
+
+An implementation of the NIST approved Format Preserving Encryption (FPE) in Java.
+
+[NIST Recommendation SP 800-38G](http://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-38G.pdf)
+
+
+## Installation
+
+Check [requirements](#requirements) section before installation
+
+
+You can pull it from the central Maven repositories:
+
+```xml
+<dependency>
+  <groupId>com.idealista</groupId>
+  <artifactId>format-preserving-encryption</artifactId>
+  <version>1.0.0</version>
+</dependency>
+```
+
+## Features
+
+* Out of the box working algorithm with an easy API
+* Custom Domain (any subset of character could be used)
+* Custom Pseudo Random Function (_cipher algorithm_)
+
+## Example Usage
+
+### Input data
+
+During Format Preserving Encryption object creation, input data shall meet the following requirements:
+
+- radix ∈ [ 2 .. 2<sup>16</sup> ]
+- radix<sup>minlen</sup >= 100
+- 2 <= minlen < maxlen <= 2^32
+- key is an AES Key, must be 16, 24 or 32 bytes length
+
+If default tweak option is used:
+
+- tweak length should be lower that tweakMaxLength
+
+### Code
+
+```java
+// with default values
+FormatPreservingEncryption formatPreservingEncryption = FormatPreservingEncryptionBuilder
+        .ff1Implementation()
+        .withDefaultDomain()
+        .withDefaultPseudoRandomFunction(anyKey)
+        .withDefaultLengthRange()
+        .build();
+    
+//with custom inputs
+FormatPreservingEncryption formatPreservingEncryption = FormatPreservingEncryptionBuilder
+        .ff1Implementation()
+        .withDomain(new BasicAlphabetDomain())
+        .withPseudoRandomFunction(new DefaultPseudarandomFunction(anyKey))
+        .withLengthRange(new LengthRange(2, 20))
+        .build();
+
+//usage
+String cipherText = formatPreservingEncryption.encrypt(aText, aTweak);
+String plainText = formatPreservingEncryption.decrypt(aText, aTweak);
+```
+
+### Custom Inputs
+
+#### Domain
+
+[GenericDomain](src/main/java/com/idealista/fpe/config/GenericDomain.java) represents the easiest implementation of a domain.  A valid domain should be able to transform text input to numeral string and numeral string to text.
+
+The _domain_ of an instance has two elements:
+
+- *Alphabet*: A subset of characters that are valid to create a text input for an instance.
+- *Transformers*: Functions (Class) that are able to transform text to numeral string or numeral string to text.
+
+The [default domain](src/main/java/com/idealista/fpe/config/basic/BasicAlphabet.java) includes the lower case letters of the English alphabet
+
+#### Pseudo Random Function (PRF)
+
+A given designated cipher function. By default AES-CBC with 128, 192 or 256 based on the input key is used.
+
+#### Input text length
+
+The minimum length of a text for a given domain is defined using the rules at the start of this section. Although the maximum length is not defined, you must be aware of performance issues when using a very large text.  
+
+## Requirements
+
+The library has been tested with _Apache Maven 3.3.3_ and _JDK 1.6-1.7_. Newer versions of _Apache Maven/JDK_ should work but could also present issues.
+
+Usage of Java Cryptography Extension (JCE) requires to download an install Policy Files for target java distribution: [1.6](http://www.oracle.com/technetwork/es/java/javase/downloads/jce-6-download-429243.html), [1.7](http://www.oracle.com/technetwork/java/javase/downloads/jce-7-download-432124.html), [1.8](http://www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html)
+
+## Design choices
+
+- FF1Algorithm is a _pure_ implementation without checking, input data is checked during object creation or before invoke the algorithm. Be awere of this when using the library and use the `FormatPreservingEncryptionBuilder` class.
+- Every input data error throws an `IllegalArgumentException`
+
+## TODO
+
+* Implement FF3
+
+## License 
+
+Read [LICENSE.txt](LICENSE.txt) attached to the project
+
+## Contribution
+
+Read [CONTRIBUTION.md](CONTRIBUTION.md)

build/before-deploy.sh

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+#!/usr/bin/env bash
+
+if [ "$TRAVIS_BRANCH" = 'master' ] && [ "$TRAVIS_PULL_REQUEST" == 'false' ]; then
+    openssl aes-256-cbc -K $encrypted_d39b6f1d3f80_key -iv $encrypted_d39b6f1d3f80_iv -in build/codesigning.asc.enc -out build/codesigning.asc -d
+    gpg --fast-import build/signingkey.asc
+fi

build/codesigning.asc.enc

@@ -0,0 +1,4 @@
+#!/usr/bin/env bash
+if [ "$TRAVIS_BRANCH" = 'master' ] && [ "$TRAVIS_PULL_REQUEST" == 'false' ]; then
+    mvn deploy -P sign,build-extras --settings build/mvnsettings.xml
+fi

build/deploy.sh

@@ -0,0 +1,24 @@
+<settings>
+    <servers>
+        <server>
+            <id>ossrh</id>
+            <username>${env.OSSRH_USERNAME}</username>
+            <password>${env.OSSRH_PASSWORD}</password>
+        </server>
+    </servers>
+
+    <profiles>
+        <profile>
+            <id>ossrh</id>
+            <activation>
+                <activeByDefault>true</activeByDefault>
+            </activation>
+            <properties>
+                <gpg.executable>gpg</gpg.executable>
+                <gpg.keyname>${env.GPG_KEY_NAME}</gpg.keyname>
+                <gpg.passphrase>${env.GPG_PASSPHRASE}</gpg.passphrase>
+            </properties>
+
+        </profile>
+    </profiles>
+</settings>