April 2014 - Pharo-users - lists.pharo.org

Re: [Pharo-users] Base64 or HMAC problem

by Sergi Reyner

2014-04-28 16:11 GMT+01:00 Spiliosv <spiliosv(a)gmail.com>: > With values: > unsignedSignature := 'pharmacistprescriptionsget000001'. > > But with values > unsignedSignature := userName,'prescriptionsgetexecuted',barCode. > This is so obvious that I doubted about replying. But then again, IÂ´ve been bitten by "obvious" more than once, so... Probably intended, but you have 'executed' on the second example, and not on the first. Cheers, Sergi

April 28, 2014

Re: [Pharo-users] Base64 or HMAC problem

by Paul DeBruicker

The double equals in the api key is padding. (https://en.wikipedia.org/wiki/Base64#Padding) Will you please try your code without it, and report back? Thanks Paul Spiliosv wrote > Dear Sven, > > First of all thank you for your prompt reply. > > I will try and include the information you have requested. > > The SHA256 implementation comes from here > http://smalltalkhub.com/#!/~Cryptography/Cryptography and I loaded only > the latest version of Cryptography into a fresh pharo 2.0 image, and > nothing else. > > I need this hmacsha256 encryption for a rest implementation I am trying > out, for which I have a VB implementation and I get the correct values for > both sets of data. > > It seems that the SHA256 (encodedSignature) hex value is correct on both > occasions and the base64 encodedForHTTP value for the apiKey := > '123456789' is also correct, but for the case where apiKey := > 'veQC+IBLq5qMO8oGcQupjg==' I get the base64 encodedForHTTP value of > 'AcTXF%2BlDa2kRYVm0k5jY6pGGTMXD7NsQS6tLBXRp3Xs%3D' where I should get > '%2B%2FYhVkcaEIHBeUESOsJYD1nKyJXVGyFX%2FlxR616aUK4%3D'. > The two sets of testing code are: > 1) Produces correct result. > apiKey := '123456789'. > unsignedSignature := 'pharmacistprescriptionsget000001'. > encodedSignature := (SHA256 new) hmac key: apiKey asByteArray; > digestMessage: unsignedSignature asByteArray. > encodedSignature base64Encoded encodeForHTTP. > > 2) > apiKey := 'veQC+IBLq5qMO8oGcQupjg=='. > userName := 'testpharm'. > barCode :='1403122014500'. > unsignedSignature := userName,'prescriptionsgetexecuted',barCode. > encodedSignature := (SHA256 new) hmac key: apiKey asByteArray; > digestMessage: unsignedSignature asByteArray. > encodedSignature base64Encoded encodeForHTTP. > > Is the above enough? > Regards, Spilios > > Now I understand why I see the long emails/replies! -- View this message in context: http://forum.world.st/Base64-or-HMAC-problem-tp4756788p4756836.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

April 28, 2014

Re: [Pharo-users] a Pharo talk from a ruby conference

by Alain Busser

Also, Ruby is famous for these methods: *select *reject *collect do these names not remind you something ;-) ? Alain On Mon, Apr 28, 2014 at 8:12 PM, Marcus Denker <marcus.denker(a)inria.fr>wrote: > â¦ more a Smalltalk one using Pharo: > > MountainWest RubyConf 2014 > > Noel Rappin: "But Really, You Should Learn Smalltalkâ > > Smalltalk has mystique. We talk about it more than we use it. It seems > like it should be so similar to Ruby. It has similar Object-Oriented > structures, it even has blocks. But everything is so slightly different, > from the programming environment, to the 1-based arrays, to the simple > syntax. Using Smalltalk will make you look at familiar constructs with new > eyes. Weâll show you how to get started on Smalltalk, and walk through some > sample code. Live coding may be involved. Youâll never look at objects the > same way again. > > > http://www.confreaks.com/videos/3284-mwrc-but-really-you-should-learn-small… >

April 28, 2014

Re: [Pharo-users] Base64 or HMAC problem

by Spiliosv

Dear Sven, First of all thank you for your prompt reply. I will try and include the information you have requested. The SHA256 implementation comes from here http://smalltalkhub.com/#!/~Cryptography/Cryptography and I loaded only the latest version of Cryptography into a fresh pharo 2.0 image, and nothing else. I need this hmacsha256 encryption for a rest implementation I am trying out, for which I have a VB implementation and I get the correct values for both sets of data. It seems that the SHA256 (encodedSignature) hex value is correct on both occasions and the base64 encodedForHTTP value for the apiKey := '123456789' is also correct, but for the case where apiKey := 'veQC+IBLq5qMO8oGcQupjg==' I get the base64 encodedForHTTP value of 'AcTXF%2BlDa2kRYVm0k5jY6pGGTMXD7NsQS6tLBXRp3Xs%3D' where I should get '%2B%2FYhVkcaEIHBeUESOsJYD1nKyJXVGyFX%2FlxR616aUK4%3D'. The two sets of testing code are: 1) Produces correct result. apiKey := '123456789'. unsignedSignature := 'pharmacistprescriptionsget000001'. encodedSignature := (SHA256 new) hmac key: apiKey asByteArray; digestMessage: unsignedSignature asByteArray. encodedSignature base64Encoded encodeForHTTP. 2) apiKey := 'veQC+IBLq5qMO8oGcQupjg=='. userName := 'testpharm'. barCode :='1403122014500'. unsignedSignature := userName,'prescriptionsgetexecuted',barCode. encodedSignature := (SHA256 new) hmac key: apiKey asByteArray; digestMessage: unsignedSignature asByteArray. encodedSignature base64Encoded encodeForHTTP. Is the above enough? Regards, Spilios Now I understand why I see the long emails/replies! -- View this message in context: http://forum.world.st/Base64-or-HMAC-problem-tp4756788p4756814.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

April 28, 2014

Re: [Pharo-users] Base64 or HMAC problem

by Spiliosv

Dear Sven,First of all thank you for your prompt reply.I will try and include the information you have requested.The SHA256 implementation comes from here http://smalltalkhub.com/#!/~Cryptography/Cryptography and I loaded only the latest version of Cryptography into a fresh pharo 2.0 image, and nothing else.I need this hmacsha256 encryption for a rest implementation I am trying out, for which I have a VB implementation and I get the correct values for both sets of data.It seems that the SHA256 (encodedSignature) hex value is correct on both occasions and the base64 encodedForHTTP value for the apiKey := '123456789' is also correct, but for the case where apiKey := 'veQC+IBLq5qMO8oGcQupjg==' I get the base64 encodedForHTTP value of 'AcTXF%2BlDa2kRYVm0k5jY6pGGTMXD7NsQS6tLBXRp3Xs%3D' where I should get '%2B%2FYhVkcaEIHBeUESOsJYD1nKyJXVGyFX%2FlxR616aUK4%3D'.The two sets of testing code are:1) Produces correct result.apiKey := '123456789'.unsignedSignature := 'pharmacistprescriptionsget000001'.encodedSignature := (SHA256 new) hmac key: apiKey asByteArray; digestMessage: unsignedSignature asByteArray.encodedSignature base64Encoded encodeForHTTP.2)apiKey := 'veQC+IBLq5qMO8oGcQupjg=='.userName := 'testpharm'.barCode :='1403122014500'.unsignedSignature := userName,'prescriptionsgetexecuted',barCode.encodedSignature := (SHA256 new) hmac key: apiKey asByteArray; digestMessage: unsignedSignature asByteArray.encodedSignature base64Encoded encodeForHTTP.Is the above enough?Regards,Spilios -- View this message in context: http://forum.world.st/Base64-or-HMAC-problem-tp4756788p4756810.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

April 28, 2014

Re: [Pharo-users] Base64 or HMAC problem

by Sven Van Caekenberghe

Hi Spilios, There is not enough information in your mail. Where exactly did you load SHA256 from and how ? What are the correct/incorrect answers that you get ? >From where do you get the references values ? How sure are you they are correct ? If you make it easy for others to execute the same expression as you do, you'll get a better answer. Sven On 28 Apr 2014, at 17:11, Spiliosv <spiliosv(a)gmail.com> wrote: > Dear all, > > I am currently having an issue on Pharo 2.0 for windows in using HMAC > encryption and subsequent bas64 encoding. > > I have loaded the cryptography library from smalltalkhub, but I do not get > appropriate results when using the code below: > > encodedSignature := (SHA256 new) hmac key: apiKey asByteArray; > digestMessage: unsignedSignature asByteArray. > encodedSignature base64Encoded encodeForHTTP. > > With values: > apiKey := '123456789'. > unsignedSignature := 'pharmacistprescriptionsget000001'. > the result obtained is correct. > > But with values > apiKey := 'veQC+IBLq5qMO8oGcQupjg=='. > userName := 'testpharm'. > barCode :='1403122014500'. > unsignedSignature := userName,'prescriptionsgetexecuted',barCode. > the result is not correct. > > What am I doing wrong or I do not understand correctly? > > Kind regards, > Spilios > > > > -- > View this message in context: http://forum.world.st/Base64-or-HMAC-problem-tp4756788.html > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >

April 28, 2014

a Pharo talk from a ruby conference

by Marcus Denker

â¦ more a Smalltalk one using Pharo: MountainWest RubyConf 2014 Noel Rappin: "But Really, You Should Learn Smalltalkâ Smalltalk has mystique. We talk about it more than we use it. It seems like it should be so similar to Ruby. It has similar Object-Oriented structures, it even has blocks. But everything is so slightly different, from the programming environment, to the 1-based arrays, to the simple syntax. Using Smalltalk will make you look at familiar constructs with new eyes. Weâll show you how to get started on Smalltalk, and walk through some sample code. Live coding may be involved. Youâll never look at objects the same way again. http://www.confreaks.com/videos/3284-mwrc-but-really-you-should-learn-small…

April 28, 2014

Re: [Pharo-users] 30838 and 837 *REVERTED*

by Tudor Girba

Thank you, Marcus. Doru On Mon, Apr 28, 2014 at 4:39 PM, Marcus Denker <marcus.denker(a)inria.fr>wrote: > > On 28 Apr 2014, at 16:31, Marcus Denker <marcus.denker(a)inria.fr> wrote: > > > Hi, > > > > if you downloaded 30 838 (from today) or 30 837 please re-download 837. > > > > Both images where broken due to things that have to be done âjust before > the releaseâ, > > which are, of course, broken as they are only done just before the > release once a year. > > > > The 837 available now is ok: > > https://ci.inria.fr/pharo/job/Pharo-3.0-Update-Step-4-Publish/ > > http://files.pharo.org/image/30/latest.zip > > Marcus > > > -- www.tudorgirba.com "Every thing has its own flow"

April 28, 2014

Base64 or HMAC problem

by Spiliosv

Dear all, I am currently having an issue on Pharo 2.0 for windows in using HMAC encryption and subsequent bas64 encoding. I have loaded the cryptography library from smalltalkhub, but I do not get appropriate results when using the code below: encodedSignature := (SHA256 new) hmac key: apiKey asByteArray; digestMessage: unsignedSignature asByteArray. encodedSignature base64Encoded encodeForHTTP. With values: apiKey := '123456789'. unsignedSignature := 'pharmacistprescriptionsget000001'. the result obtained is correct. But with values apiKey := 'veQC+IBLq5qMO8oGcQupjg=='. userName := 'testpharm'. barCode :='1403122014500'. unsignedSignature := userName,'prescriptionsgetexecuted',barCode. the result is not correct. What am I doing wrong or I do not understand correctly? Kind regards, Spilios -- View this message in context: http://forum.world.st/Base64-or-HMAC-problem-tp4756788.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

April 28, 2014

Roassal2 question: Including pictures in visualizations

by Arturo Zambrano

Hi All, I wonder if RT is able to integrate images as part of the visuailzation. For example consider the case of some diagram (let say a vertical bar one) where instead of having text labels for each bar could include some image that describe the owner of the metric. In my case it could be the profile image of a twitter user. thanks art

April 28, 2014