steganography

Steganography in lossy compression (JAVA)

由 允我心安 提交于 2019-11-27 05:22:41
I have this for encoding data in jpeg images in java. I am converting the text to its binary form and insert it to the LSB (depending on what the user has chosen.1,2,3,4) of the RGB in each pixel from (0,0) till (width,height). outer: for(int i = 0; i < height; i++){ for(int j = 0; j < width; j++){ Color c = new Color(image.getRGB(j, i)); int red = binaryToInteger(insertMessage(integerToBinary((int)(c.getRed())),numLSB)); int green = binaryToInteger(insertMessage(integerToBinary((int)(c.getGreen())),numLSB)); int blue = binaryToInteger(insertMessage(integerToBinary((int)(c.getBlue())),numLSB))

LSB-DCT based Image steganography

由 我是研究僧i 提交于 2019-11-26 14:53:04
问题 I'm working on LSB-DCT based Image steganography in which i have to apply LSB to DCT coefficients of the image for data embedding to JPEG.i'm new to all this.so searched and read some research papers they all lack a lot of information regarding the process after DCT.i also read many questions and answers on stackoverflow too and got more confused. here are the questions: 1-reasearch paper and in question on the web they all are using 8x8 block size from image for DCT..what i should do if the

How can you hide information inside a jpg or gif photo?

由 ぃ、小莉子 提交于 2019-11-26 13:03:44
问题 How can I write some information inside a photo file like jpg or gif without destroying the image? and of course without showing it on the photo since the whole idea is to send information in the file of photo undetected by anyone (to provide security/privacy to some extent)! 回答1: You can store some information in image metadata. In fact that's how man digital cameras 'tag' the photos their making (camera model, date and time, GPS coords etc.). This data format is called EXIF (Exchangeable

Steganography in lossy compression (JAVA)

由 不想你离开。 提交于 2019-11-26 09:58:15
问题 I have this for encoding data in jpeg images in java. I am converting the text to its binary form and insert it to the LSB (depending on what the user has chosen.1,2,3,4) of the RGB in each pixel from (0,0) till (width,height). outer: for(int i = 0; i < height; i++){ for(int j = 0; j < width; j++){ Color c = new Color(image.getRGB(j, i)); int red = binaryToInteger(insertMessage(integerToBinary((int)(c.getRed())),numLSB)); int green = binaryToInteger(insertMessage(integerToBinary((int)(c
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