A Novel Image Encryption Algorithm Based on Voice Key and Chaotic Map

This paper proposes a new image encryption algorithm. First, time-domain and frequency-domain features of the user’s voice are extracted to generate key. Second, key is iterated through chaotic map multiple times data oscillation region, and, subsequently, parameters area used encrypt image. Third, at time decryption, latest re-extracted decrypt encrypted The cannot be successfully decrypted if there differences between two voices in or frequency domain. Finally, experiments performed using 80 groups face images data, all which pass decryption experiments. In addition, various safety tests have been carried out on sensitivity algorithm verified by normalized cross-correlation parameter Cncc. effective anti-attack ability measuring correlation adjacent pixels, number changing pixel rate (NPCR) unified averaged changed intensity (UACI). space proposed greater than 2100, it has good anti-cracking ability.