Image steganography based on nonsubsampled Contourlet transform and Hill cipher
A novel image steganography was proposed，which was based on nonsubsampled Contourlet transform （NSCT）and Hill cipher.Firstly，cover image was decomposed with NSCT.It provided a multi-scale and multi-directional representation of an image.One of subbands was selected to embed secret data.Then Hill cip...
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| Format: | Article |
| Language: | zho |
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Beijing Xintong Media Co., Ltd
2016-06-01
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| Series: | Dianxin kexue |
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| Online Access: | http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2016170/ |
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| _version_ | 1841529895873675264 |
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| author | Shuliang SUN |
| author_facet | Shuliang SUN |
| author_sort | Shuliang SUN |
| collection | DOAJ |
| description | A novel image steganography was proposed，which was based on nonsubsampled Contourlet transform （NSCT）and Hill cipher.Firstly，cover image was decomposed with NSCT.It provided a multi-scale and multi-directional representation of an image.One of subbands was selected to embed secret data.Then Hill cipher was applied to encrypt the secret message.How to find a proper cipher matrix was important in this way.The selected matrix should be inevitable and relatively prime to the number of alphabets.The skill of 2<sup>k</sup> correction was applied to ease the difference between cover and stego image.Experiment results show that both stego image and retrieved image have better image quality with the proposed approach than other methods. |
| format | Article |
| id | doaj-art-8c89bcaf7143479da169816289bbe750 |
| institution | Kabale University |
| issn | 1000-0801 |
| language | zho |
| publishDate | 2016-06-01 |
| publisher | Beijing Xintong Media Co., Ltd |
| record_format | Article |
| series | Dianxin kexue |
| spelling | doaj-art-8c89bcaf7143479da169816289bbe7502025-01-15T03:14:43ZzhoBeijing Xintong Media Co., LtdDianxin kexue1000-08012016-06-013212412859608341Image steganography based on nonsubsampled Contourlet transform and Hill cipherShuliang SUNA novel image steganography was proposed，which was based on nonsubsampled Contourlet transform （NSCT）and Hill cipher.Firstly，cover image was decomposed with NSCT.It provided a multi-scale and multi-directional representation of an image.One of subbands was selected to embed secret data.Then Hill cipher was applied to encrypt the secret message.How to find a proper cipher matrix was important in this way.The selected matrix should be inevitable and relatively prime to the number of alphabets.The skill of 2<sup>k</sup> correction was applied to ease the difference between cover and stego image.Experiment results show that both stego image and retrieved image have better image quality with the proposed approach than other methods.http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2016170/NSCTHill cipher2<sup>k</sup> correctioncipher matrix |
| spellingShingle | Shuliang SUN Image steganography based on nonsubsampled Contourlet transform and Hill cipher Dianxin kexue NSCT Hill cipher 2<sup>k</sup> correction cipher matrix |
| title | Image steganography based on nonsubsampled Contourlet transform and Hill cipher |
| title_full | Image steganography based on nonsubsampled Contourlet transform and Hill cipher |
| title_fullStr | Image steganography based on nonsubsampled Contourlet transform and Hill cipher |
| title_full_unstemmed | Image steganography based on nonsubsampled Contourlet transform and Hill cipher |
| title_short | Image steganography based on nonsubsampled Contourlet transform and Hill cipher |
| title_sort | image steganography based on nonsubsampled contourlet transform and hill cipher |
| topic | NSCT Hill cipher 2<sup>k</sup> correction cipher matrix |
| url | http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2016170/ |
| work_keys_str_mv | AT shuliangsun imagesteganographybasedonnonsubsampledcontourlettransformandhillcipher |