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Secure Messaging with AES-256 Encryption and Key Management

This project focuses on symmetric encryption and decryption of messages using AES-256 for reliable secure communication. It highlights key management best practices through the use of SecureSQLite databases and QR code libraries for key import. Built on the aSmack library under the Apache License 2.0, the project facilitates XMPP communication for sending and receiving messages securely. Additionally, it includes components for password generation and features a live demo showcasing the implementation of the encryption methods and database security.

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Secure Messaging with AES-256 Encryption and Key Management

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Presentation Transcript

  1. GTALK

  2. Projektteam • Kieslich • Lindorfer • Schöllhammer

  3. Ziele • Symmetrische Ver/Entschlüsselung • von Nachrichten • mit AES-256 • Schlüsselmanagement • SecureSQLite DB • Schlüsselimport • QR-Code

  4. Bibliotheken • aSmack • Apache License, Version 2.0 • XMPP kommunikation • Senden/Empfangen von Nachrichten • sqlcipher for android • Apache License, Version 2.0 • AES-256 • Verschlüsselung der Datenbank

  5. Arbeitspakete • Design/Views • Datenbank • QR-Import • Passwordgenerierung

  6. Password generierung public staticbyte[]generateSeed(){ intrecorderBufferSize=AudioRecord.getMinBufferSize(8000, AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT)* 2; AudioRecord recorder =newAudioRecord(AudioSource.DEFAULT, 8000, AudioFormat.CHANNEL_IN_MONO,AudioFormat.ENCODING_PCM_16BIT, recorderBufferSize); byte[]recordedAudioBuffer=newbyte[recorderBufferSize]; recorder.startRecording(); intbufferRead=recorder.read(recordedAudioBuffer, 0,recorderBufferSize); try{ Thread.sleep(200); }catch(InterruptedException e){ e.printStackTrace(); } recorder.stop(); recorder.release(); returnrecordedAudioBuffer; }

  7. LIVE DEMO

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