Anti-Tamper Benefits of Encrypted Helper-Data Images for PUFs

Whitepaper

November 29, 2021

PUFs are mixed-signal circuits which rely on variations unique to a specific chip to self-generate a digital “fingerprint.” Most PUFs require a “helper-data” image that is generated during the initial digitization process, also known as Enrollment. Leveraging the chip-unique transformation function of PUFs and encrypted helper data, an unclonable challenge-response mechanism can be implemented that can distinguish authentic chips from perfect adversarial clones.

Download this white paper to learn:
The nature and capabilities of PUFs
Threats posed by cloned chips
Threat mitigation using PUF helper data

Download Whitepaper

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15	`category_subfooter_articles`
16	`top_footer_article`
17	`category_footer_article`

theme::article.card (resources/views/themes/_base/article/card.blade.php)18bladefile


__env
app
errors
displayed_articles
page_title
article
lead
aliId
temp_publish_date
subfooterCategories
categoryBuilder
categories
__currentLoopData
category
loop
category_subfooter_articles
top_footer_article
category_footer_article

Params
0	`__env`
1	`app`
2	`errors`
3	`displayed_articles`
4	`page_title`
5	`article`
6	`lead`
7	`aliId`
8	`temp_publish_date`
9	`subfooterCategories`
10	`categoryBuilder`
11	`categories`
12	`__currentLoopData`
13	`category`
14	`loop`
15	`category_subfooter_articles`
16	`top_footer_article`
17	`category_footer_article`

theme::article.components.article-type-tag (resources/views/themes/_base/article/components/article-type-tag.blade.php)18bladefile


__env
app
errors
displayed_articles
page_title
article
lead
aliId
temp_publish_date
subfooterCategories
categoryBuilder
categories
__currentLoopData
category
loop
category_subfooter_articles
top_footer_article
category_footer_article

theme::layouts.components.footer (resources/views/themes/_base/layouts/components/footer.blade.php)10bladefile
Params
0
__env
1
app
2
errors
3
displayed_articles
4
page_title
5
article
6
lead
7
aliId
8
temp_publish_date
9
socialMedia

Params
0	`__env`
1	`app`
2	`errors`
3	`displayed_articles`
4	`page_title`
5	`article`
6	`lead`
7	`aliId`
8	`temp_publish_date`
9	`subfooterCategories`
10	`categoryBuilder`
11	`categories`
12	`__currentLoopData`
13	`category`
14	`loop`
15	`category_subfooter_articles`
16	`top_footer_article`
17	`category_footer_article`

Params
0	`__env`
1	`app`
2	`errors`
3	`displayed_articles`
4	`page_title`
5	`article`
6	`lead`
7	`aliId`
8	`temp_publish_date`
9	`socialMedia`

uri: GET cyber/{uri_path?}
middleware: web
controller: App\Http\Controllers\Frontend\ArticleController@viewArticleByShortname
namespace: App\Http\Controllers
prefix
where
file: app/Http/Controllers/Frontend/ArticleController.php:35-49

53 statements were executed, 14 of which were duplicated, 39 unique. Show only duplicated3.31s

select * from `articles` where `shortname` = 'anti-tamper-benefits-of-encrypted-helper-data-images-for-pufs' and `publish_at` < '2025-04-01 17:50:31' limit 1

400ms/app/Http/Controllers/Frontend/ArticleController.php:42mes

Metadata
Bindings	0. anti-tamper-benefits-of-encrypted-helper-data-images-for-pufs 1. 2025-04-01 17:50:31
Backtrace	16. /app/Http/Controllers/Frontend/ArticleController.php:42 17. /vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54 18. /vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43 19. /vendor/laravel/framework/src/Illuminate/Routing/Route.php:259 20. /vendor/laravel/framework/src/Illuminate/Routing/Route.php:205

select * from `categories` where `categories`.`id` in (36)

7.38ms/app/Http/Controllers/Frontend/ArticleController.php:42mes

Metadata
Backtrace	21. /app/Http/Controllers/Frontend/ArticleController.php:42 22. /vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54 23. /vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43 24. /vendor/laravel/framework/src/Illuminate/Routing/Route.php:259 25. /vendor/laravel/framework/src/Illuminate/Routing/Route.php:205

select * from `categories` where `categories`.`id` in (5)

3.68ms/app/Http/Controllers/Frontend/ArticleController.php:42mes

Metadata
Backtrace	26. /app/Http/Controllers/Frontend/ArticleController.php:42 27. /vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54 28. /vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43 29. /vendor/laravel/framework/src/Illuminate/Routing/Route.php:259 30. /vendor/laravel/framework/src/Illuminate/Routing/Route.php:205

select * from `article_types` where `article_types`.`id` in (7)

7.32ms/app/Http/Controllers/Frontend/ArticleController.php:42mes

Metadata
Backtrace	21. /app/Http/Controllers/Frontend/ArticleController.php:42 22. /vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54 23. /vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43 24. /vendor/laravel/framework/src/Illuminate/Routing/Route.php:259 25. /vendor/laravel/framework/src/Illuminate/Routing/Route.php:205

select * from `article_attachments` where `article_attachments`.`article_id` = 9868 and `article_attachments`.`article_id` is not null

7.36ms/app/Models/Article.php:262mes

Metadata
Bindings	0. 9868
Backtrace	19. /app/Models/Article.php:262 25. view::theme::article.components.primary-image:2 27. /vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php:110 28. /vendor/laravel/framework/src/Illuminate/View/Engines/PhpEngine.php:58 29. /vendor/laravel/framework/src/Illuminate/View/Engines/CompilerEngine.php:70

select `companies`.*, `articles_companies`.`article_id` as `pivot_article_id`, `articles_companies`.`company_id` as `pivot_company_id` from `companies` inner join `articles_companies` on `companies`.`id` = `articles_companies`.`company_id` where `articles_companies`.`article_id` = 9868

36.77msview::theme::article.components.companies:1mes

Metadata
Bindings	0. 9868
Backtrace	19. view::theme::article.components.companies:1 21. /vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php:110 22. /vendor/laravel/framework/src/Illuminate/View/Engines/PhpEngine.php:58 23. /vendor/laravel/framework/src/Illuminate/View/Engines/CompilerEngine.php:70 24. /vendor/laravel/framework/src/Illuminate/View/View.php:195

select * from `articles` where `status` = 'publish' and `visibility` <> 'hidden' and `article_type_id` <> '8' and `publish_at` <= '2025-04-01 17:50:32' and `primary_image` is not null and `primary_image` <> '' and `primary_image` <> '0' order by `publish_at` desc limit 30

477ms/app/Models/Article.php:375mes

Metadata
Bindings	0. publish 1. hidden 2. 8 3. 2025-04-01 17:50:32 4. 5. 0
Backtrace	14. /app/Models/Article.php:375 15. view::theme::layouts.components.sidebar:8 17. /vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php:110 18. /vendor/laravel/framework/src/Illuminate/View/Engines/PhpEngine.php:58 19. /vendor/laravel/framework/src/Illuminate/View/Engines/CompilerEngine.php:70

select * from `categories` where `categories`.`id` in (7, 13, 15, 19, 21, 23, 24, 25, 26, 27, 31, 32, 44, 47, 1000, 1001)

4.6ms/app/Models/Article.php:375mes

Metadata
Backtrace	19. /app/Models/Article.php:375 20. view::theme::layouts.components.sidebar:8 22. /vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php:110 23. /vendor/laravel/framework/src/Illuminate/View/Engines/PhpEngine.php:58 24. /vendor/laravel/framework/src/Illuminate/View/Engines/CompilerEngine.php:70

select * from `categories` where `categories`.`id` in (1, 2, 3, 4, 6)

4.16ms/app/Models/Article.php:375mes

Metadata
Backtrace	24. /app/Models/Article.php:375 25. view::theme::layouts.components.sidebar:8 27. /vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php:110 28. /vendor/laravel/framework/src/Illuminate/View/Engines/PhpEngine.php:58 29. /vendor/laravel/framework/src/Illuminate/View/Engines/CompilerEngine.php:70

select * from `article_types` where `article_types`.`id` in (2, 3, 4, 5)

3.43ms/app/Models/Article.php:375mes

Metadata
Backtrace	19. /app/Models/Article.php:375 20. view::theme::layouts.components.sidebar:8 22. /vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php:110 23. /vendor/laravel/framework/src/Illuminate/View/Engines/PhpEngine.php:58 24. /vendor/laravel/framework/src/Illuminate/View/Engines/CompilerEngine.php:70

select `id`, `name`, `shortname` from `categories` where `parent_id` is null and `id` not in (999, 100) and exists (select * from `articles` where `categories`.`id` = `articles`.`primary_category` and `publish_at` < '2025-04-01 17:50:33' and `primary_image` is not null and (`primary_image` is not null and `primary_image` not in ('', '0')))

274ms/app/View/Composers/SubfooterComposer.php:38mes

Metadata
Bindings	0. 999 1. 100 2. 2025-04-01 17:50:33 3. 4. 0
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select * from `categories` where `categories`.`parent_id` in (1, 2, 3, 4, 5, 6) order by `shortname` asc

9.84ms/app/View/Composers/SubfooterComposer.php:38mes

Metadata
Backtrace	19. /app/View/Composers/SubfooterComposer.php:38 20. /app/View/Composers/SubfooterComposer.php:19 21. /vendor/laravel/framework/src/Illuminate/View/Concerns/ManagesEvents.php:124 22. /vendor/laravel/framework/src/Illuminate/View/Concerns/ManagesEvents.php:162 25. /vendor/laravel/framework/src/Illuminate/View/Concerns/ManagesEvents.php:177

select * from `articles` where `primary_image` is not null and (`primary_image` is not null and `primary_image` not in ('', '0')) and `primary_category` in (1, 1000, 1003, 7, 1001, 9, 1002, 8) limit 5

24.88ms/app/View/Composers/SubfooterComposer.php:63mes

Metadata
Bindings	0. 1. 0 2. 1 3. 1000 4. 1003 5. 7 6. 1001 7. 9 8. 1002 9. 8
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select * from `categories` where `categories`.`id` in (7, 8, 9, 1000)

12.34ms/app/View/Composers/SubfooterComposer.php:63mes

Metadata
Backtrace	19. /app/View/Composers/SubfooterComposer.php:63 20. /app/View/Composers/SubfooterComposer.php:19 21. /vendor/laravel/framework/src/Illuminate/View/Concerns/ManagesEvents.php:124 22. /vendor/laravel/framework/src/Illuminate/View/Concerns/ManagesEvents.php:162 25. /vendor/laravel/framework/src/Illuminate/View/Concerns/ManagesEvents.php:177

select * from `categories` where `categories`.`id` in (1)

12.84ms/app/View/Composers/SubfooterComposer.php:63mes

Metadata
Backtrace	24. /app/View/Composers/SubfooterComposer.php:63 25. /app/View/Composers/SubfooterComposer.php:19 26. /vendor/laravel/framework/src/Illuminate/View/Concerns/ManagesEvents.php:124 27. /vendor/laravel/framework/src/Illuminate/View/Concerns/ManagesEvents.php:162 30. /vendor/laravel/framework/src/Illuminate/View/Concerns/ManagesEvents.php:177

select * from `article_types` where `article_types`.`id` in (2)

3.75ms/app/View/Composers/SubfooterComposer.php:63mes

Metadata
Backtrace	19. /app/View/Composers/SubfooterComposer.php:63 20. /app/View/Composers/SubfooterComposer.php:19 21. /vendor/laravel/framework/src/Illuminate/View/Concerns/ManagesEvents.php:124 22. /vendor/laravel/framework/src/Illuminate/View/Concerns/ManagesEvents.php:162 25. /vendor/laravel/framework/src/Illuminate/View/Concerns/ManagesEvents.php:177

select * from `articles` where `primary_image` is not null and (`primary_image` is not null and `primary_image` not in ('', '0')) and `primary_category` in (2, 14, 17, 18, 13, 1004, 15, 16, 19) limit 5

21.6ms/app/View/Composers/SubfooterComposer.php:63mes

Metadata
Bindings	0. 1. 0 2. 2 3. 14 4. 17 5. 18 6. 13 7. 1004 8. 15 9. 16 10. 19
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select * from `categories` where `categories`.`id` in (15, 16, 18)

8.37ms/app/View/Composers/SubfooterComposer.php:63mes

Metadata
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select * from `categories` where `categories`.`id` in (2)

7.06ms/app/View/Composers/SubfooterComposer.php:63mes

Metadata
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select * from `article_types` where `article_types`.`id` in (2)

1.24ms/app/View/Composers/SubfooterComposer.php:63mes

Metadata
Backtrace	19. /app/View/Composers/SubfooterComposer.php:63 20. /app/View/Composers/SubfooterComposer.php:19 21. /vendor/laravel/framework/src/Illuminate/View/Concerns/ManagesEvents.php:124 22. /vendor/laravel/framework/src/Illuminate/View/Concerns/ManagesEvents.php:162 25. /vendor/laravel/framework/src/Illuminate/View/Concerns/ManagesEvents.php:177

select * from `articles` where `primary_image` is not null and (`primary_image` is not null and `primary_image` not in ('', '0')) and `primary_category` in (3, 1005, 23, 26, 25, 21, 20, 24, 22) limit 5

6.33ms/app/View/Composers/SubfooterComposer.php:63mes

Metadata
Bindings	0. 1. 0 2. 3 3. 1005 4. 23 5. 26 6. 25 7. 21 8. 20 9. 24 10. 22
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select * from `categories` where `categories`.`id` in (20, 23)

3.39ms/app/View/Composers/SubfooterComposer.php:63mes

Metadata
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select * from `categories` where `categories`.`id` in (3)

4.61ms/app/View/Composers/SubfooterComposer.php:63mes

Metadata
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select * from `article_types` where `article_types`.`id` in (2)

2.89ms/app/View/Composers/SubfooterComposer.php:63mes

Metadata
Backtrace	19. /app/View/Composers/SubfooterComposer.php:63 20. /app/View/Composers/SubfooterComposer.php:19 21. /vendor/laravel/framework/src/Illuminate/View/Concerns/ManagesEvents.php:124 22. /vendor/laravel/framework/src/Illuminate/View/Concerns/ManagesEvents.php:162 25. /vendor/laravel/framework/src/Illuminate/View/Concerns/ManagesEvents.php:177

select * from `articles` where `primary_image` is not null and (`primary_image` is not null and `primary_image` not in ('', '0')) and `primary_category` in (4, 32, 31, 30, 29, 27) limit 5

98.17ms/app/View/Composers/SubfooterComposer.php:63mes

Metadata
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3.22ms/app/View/Composers/SubfooterComposer.php:63mes

Metadata
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select * from `categories` where `categories`.`id` in (4)

1.73ms/app/View/Composers/SubfooterComposer.php:63mes

Metadata
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select * from `article_types` where `article_types`.`id` in (2, 3)

4.13ms/app/View/Composers/SubfooterComposer.php:63mes

Metadata
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select * from `categories` where `parent_id` is null and `id` not in (999, 100, 1061)

4.45msview::theme::layouts.components.category_subfooter:6mes

Metadata
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2.89ms/app/Models/Category.php:142mes

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Metadata
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select `articles`.* from `articles` where `publish_at` < '2025-04-01 17:50:33' and `primary_image` is not null and `primary_image` != '0' and `primary_image` != '' and `article_type_id` <> '8' and (`primary_category` = 1 or `primary_category` = 1000 or `primary_category` = 1003 or `primary_category` = 7 or `primary_category` = 1001 or `primary_category` = 9 or `primary_category` = 1002 or `primary_category` = 8) and `article_type_id` <> '8' order by `publish_at` desc limit 5

389msview::theme::layouts.components.category_subfooter:19mes

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12.45msview::theme::layouts.components.category_subfooter:19mes

Metadata
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select * from `categories` where `categories`.`id` in (1)

4.29msview::theme::layouts.components.category_subfooter:19mes

Metadata
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select * from `article_types` where `article_types`.`id` in (3)

4.4msview::theme::layouts.components.category_subfooter:19mes

Metadata
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3.42ms/app/Models/Category.php:142mes

Metadata
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select * from `categories` where `categories`.`parent_id` = 4 and `categories`.`parent_id` is not null order by `shortname` asc

5.82ms/app/Models/Category.php:148mes

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