ANALISIS KEAMANAN PESAN PENDEK WHATSAPP MENGGUNAKAN KOMBINASI ALGORITMA RSA DAN STEGANOGRAFI LSB PADA MEDIA GAMBAR
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Abstract
Short text messages on WhatsApp often contain sensitive information despite their brevity. This research implements RSA cryptography and LSB steganography to secure WhatsApp messages embedded in images. Five WhatsApp screenshots were used as test data. The RSA algorithm (2048-bit) encrypts text messages, while LSB hides encrypted data in image pixels. Analysis includes encryption time, PSNR, and security assessment. Results show PSNR averaging 48.6 dB with encryption time of 152 ms per message. The RSA+LSB combination provides dual-layer security suitable for protecting short personal messages on messaging platforms.
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