[Bitcoin-development] Payment Protocol Hash Comments

[Drak]

Not true, PHP does support sha2

http://php.net/manual/en/mhash.constants.php
http://php.net/manual/en/function.hash-algos.php#refsect1-function.hash-algos-examples
On 2 Mar 2014 08:44, "Mike Hearn" <mike at plan99.net> wrote:

> SHA-1 support is there for PHP developers. Apparently it can't do SHA-2.
> On 2 Mar 2014 08:53, "Jeremy Spilman" <jeremy at taplink.co> wrote:
>
>>  From BIP70:
>>
>>    If pki_type is "x509+sha256", then the Payment message is hashed using
>> the
>>    SHA256 algorithm to produce the message digest that is signed. If
>> pki_type
>>    is "x509+sha1", then the SHA1 algorithm is used.
>>
>> A couple minor comments;
>>
>>   - I think it meant to say the field to be hashed is 'PaymentRequest' not
>> 'Payment' message -- probably got renamed at some point and this is an old
>> reference calling it by its original name.
>>
>>   - Could be a bit more explicit about the hashing, e.g. 'copy the
>> PaymentRequest, set the signature field to the empty string, serialize to
>> a byte[] and hash.
>>
>>   - SHA1 is retiring, any particular reason to even have it in there at
>> all?
>>
>>   - Should there any way for the end-user to see details like the pki_type
>> and the certificate chain, like browser do?
>>
>>
>> Thanks,
>> Jeremy
>>
>>
>>
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>
>
> ------------------------------------------------------------------------------
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> Customize your own dashboards, set traffic alerts and generate reports.
> Network behavioral analysis & security monitoring. All-in-one tool.
>
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