[Microid] MicroID Python code + comments on the spec

Peter Saint-Andre stpeter at jabber.org
Wed Jan 3 16:39:33 EST 2007


Never mind, Jer straightened me out. So I did:

1. echo -n 'xmpp:stpeter at jabber.org' | openssl dgst -sha1

afa6353518f818af2f036da336c3097dedc00dee

2. echo -n 'https://www.xmpp.net/' | openssl dgst -sha1

3115de01ebfa34a34314060b5f30038b0fa359f8

3. echo -n 
'afa6353518f818af2f036da336c3097dedc00dee3115de01ebfa34a34314060b5f30038b0fa359f8' 
| openssl dgst -sha1

6196ea6709be2a4cbdf2bc0cfaeac491f2fb8921

Which matches Eran's output.

/psa

Peter Saint-Andre wrote:
> Erk, I don't see how to remove the newline from my files and when I run 
> openssl at the command line with stdin I get the same result (because I 
> need to hit return in order for it to give me output).
> 
> Eran, could you send me the intermediate output as well?
> 
> jer wrote:
>> You're catching newlines in your files:
>>
>> booker:~ jer$ openssl dgst -sha1 ent1.txt
>> SHA1(ent1.txt)= 6438d67faaaf7803f4dd47df5e9406cd0bb232fe
>> booker:~ jer$ hexdump -c ent1.txt
>> 0000000   x   m   p   p   :   s   t   p   e   t   e   r   @   j   a   b
>> 0000010   b   e   r   .   o   r   g  \n
>>
>>
>> On Jan 3, 2007, at 2:40 PM, Peter Saint-Andre wrote:
>>
>>> Eran Sandler wrote:
>>>> Hey all,
>>>> Attached is a simple function implementation of microid in Python 
>>>> (after
>>>> seeing the Java implementation I had to do something ;-) ).
>>>> This sample is for Python 2.4 or so (in 2.5 the SHA API I'm using is
>>>> deprecated, so when I'll install it I'll submit a Python 2.5 valid 
>>>> sample).
>>>> It also contains a sample that you can run it by itself (and not 
>>>> include it
>>>> in a project). Run by specifying:
>>>> python microid.py firsturi seconduri
>>>> Where firsturi is the first uri you want to encode and the second is 
>>>> the
>>>> second.
>>>> For example:
>>>> python microid.py xmpp:stpeter at jabber.org https://www.xmpp.net/
>>>> This will produce (with the '======' lines):
>>>> ======================================================================== 
>>>>
>>>> first uri          : xmpp:stpeter at jabber.org
>>>> second uri         : https://www.xmpp.net/
>>>> microid hash value : 6196ea6709be2a4cbdf2bc0cfaeac491f2fb8921
>>>> microid            :
>>>> xmpp+https:sha1:6196ea6709be2a4cbdf2bc0cfaeac491f2fb8921
>>>> ======================================================================== 
>>>>
>>>> For the value of the microid printed, it will try to extract the 
>>>> protocol
>>>> used form the uris given in the input.
>>>> This also brings me to another point. I might be wrong on this, but 
>>>> I double
>>>> checked the hash values and the sample on the spec has the wrong hash
>>>> values. The ones I've listed above is the right ones (as far as I could
>>>> tell).
>>>> So it would be good to correct the sample so that people will be 
>>>> able to
>>>> verify that their sha1 hashing (at least for now) is working well.
>>>
>>> Here is how I generated the examples:
>>>
>>> 1. Create a file ent1.txt whose only content is:
>>>
>>> xmpp:stpeter at jabber.org
>>>
>>> 2. Run the following command:
>>>
>>> openssl dgst -sha1 ent1.txt
>>>
>>> 3. Get the following output:
>>>
>>> 6438d67faaaf7803f4dd47df5e9406cd0bb232fe
>>>
>>> 4. Create a file ent2.txt whose only content is:
>>>
>>> https://www.xmpp.net/
>>>
>>> 5. Run the following command:
>>>
>>> openssl dgst -sha1 ent2.txt
>>>
>>> 6. Get the following output:
>>>
>>> d2d7361de77be843f0480000e09619ba56142ad3
>>>
>>> 7. Create a file inputs.txt whose content is a concatenation of the 
>>> two hashes:
>>>
>>> 6438d67faaaf7803f4dd47df5e9406cd0bb232fed2d7361de77be843f0480000e09619ba56142ad3 
>>>
>>>
>>> 8. Run the following command:
>>>
>>> openssl dgst -sha1 inputs.txt
>>>
>>> 9. Get the following output:
>>>
>>> bd3f7a2cea6e6013067293d9efb11e7b0ece829e
>>>
>>> Which seems to follow the generation method described at 
>>> http://microid.org/microid.html#generation
>>>
>>> But I freely admit that I may be missing something. :-)
>>>
>>> Peter
>>>
>>> --Peter Saint-Andre
>>> Jabber Software Foundation
>>> http://www.jabber.org/people/stpeter.shtml
>>>


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