Re: [OpenWrt-Devel] Sha256 checksum generation of images: why OpenSSL instead of sha256sum?

2016-03-26 Thread Paul Fertser 
Weedy  writes:
> $ openssl dgst -sha256 ubcd535.iso | awk '/^SHA256/ {
> gsub(/^SHA256\(/,"",$1); gsub(/\)\=/,"",$1); print $2"  "$1 }'

Or sed -E 's/.*\((.*)\)= (.*)/\2  \1/'

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Re: [OpenWrt-Devel] Sha256 checksum generation of images: why OpenSSL instead of sha256sum?

2016-03-26 Thread Weedy 
$ openssl dgst -sha256 ubcd535.iso | awk '/^SHA256/ {
gsub(/^SHA256\(/,"",$1); gsub(/\)\=/,"",$1); print $2"  "$1 }'
f4ad684385845a0dfcd944dc6b6a0aa00886a05a7143efafa8403e01fea49849  ubcd535.iso
$ sha256sum ubcd535.iso
f4ad684385845a0dfcd944dc6b6a0aa00886a05a7143efafa8403e01fea49849  ubcd535.iso

It's fairly painless to reformat.
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Re: [OpenWrt-Devel] Sha256 checksum generation of images: why OpenSSL instead of sha256sum?

2016-03-22 Thread francesco . borromini 
OK, thanks. I build off a local branch either way, with regular rebasing. Easier for me to replace the code :)
Stijn
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Re: [OpenWrt-Devel] Sha256 checksum generation of images: why OpenSSL instead of sha256sum?

2016-03-22 Thread John Crispin 


On 22/03/2016 08:51, Bastian Bittorf wrote:
> * Stijn Segers  [22.03.2016 08:47]:
>> Is there a specific reason why OpenSSL is used instead of sha256sum?
> 
> it's all about portability. OpenSSL is widely available, and sha256 not.
> maybe you can 'sanitize' the output somehow?
> 
> bye, bastian
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i copied it from the buildbot setup and they use openssl for portability
afaik

John
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Re: [OpenWrt-Devel] Sha256 checksum generation of images: why OpenSSL instead of sha256sum?

2016-03-22 Thread Bastian Bittorf 
* Stijn Segers  [22.03.2016 08:47]:
> Is there a specific reason why OpenSSL is used instead of sha256sum?

it's all about portability. OpenSSL is widely available, and sha256 not.
maybe you can 'sanitize' the output somehow?

bye, bastian
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[OpenWrt-Devel] Sha256 checksum generation of images: why OpenSSL instead of sha256sum?

2016-03-21 Thread Stijn Segers 

Hi guys,

I have a nice script on my routers that pulls in a new firmware image, 
validates the checksum, then flashes it. I switched it to
sha256 (from md5), noticed the format in the sha256sums was different, 
but didn't pay it too much mind - except that now, the busybox 
sha256sum function chokes on the layout, and sha256sum thinks the 
checksums don't match.


I started looking into the build code and found this in 
include/image.mk:


$(call Image/Checksum,md5sum --binary,md5sums)
$(call Image/Checksum,openssl dgst -sha256,sha256sums)

Is there a specific reason why OpenSSL is used instead of sha256sum? If 
not, I can whip up a patch to bring it in line with the 'historical' 
md5sum code.


Thanks!

Stijn
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