On Mon, Feb 2, 2015 at 12:03 PM, Leigh wrote:
>
> In Rogaway's own OCB FAQ it states:
>
> The number τ, the tag length of the scheme, is, like the blockcipher
> E, a parameter of the mode. It’s a number 0 ≤ τ ≤ 128.
>
> http://web.cs.ucdavis.edu/~rogaway/ocb/ocb-faq.htm
>
The OCB is just in open
On 2 February 2015 at 11:46, Jason Gerfen wrote:
> According to documentation provided about the OCB mode of AES it says the
> following:
>
> Section 3: The scheme
>>
>> The tag length is an integer τ ∈ [0 .. n]. ... As for the tag length, a
>> suggested default of τ = 64 is reasonable. Tags of 32
On Mon, Feb 2, 2015 at 3:58 AM, Leigh wrote:
> On 2 February 2015 at 10:57, Leigh wrote:
> > length (not sure how of
>
> Not sure how often tag lengths aside from 16 are used.
>
According to documentation provided about the OCB mode of AES it says the
following:
Section 3: The scheme
> The
On 2 February 2015 at 10:57, Leigh wrote:
> length (not sure how of
Not sure how often tag lengths aside from 16 are used.
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On 1 February 2015 at 17:57, Jakub Zelenka wrote:
> Hey,
>
> I have already implemented all of this in crypto ext (
> https://github.com/bukka/php-crypto ) and also added support for streams
> (e.g.
> https://github.com/bukka/php-crypto/blob/master/tests/stream_filters_cipher_gcm_dec_read.phpt
> )
Hey
On Sat, Jan 31, 2015 at 4:21 PM, Leigh wrote:
> On 31 January 2015 at 16:13, Jason Gerfen wrote:
> > On Sat, Jan 31, 2015 at 8:53 AM, Leigh wrote:
> >> At the very basic end of the spectrum, we could have openssl_get_tag
> >> and openssl_set_tag, or add an extra parameter to the end of
> >
On 31 January 2015 at 16:13, Jason Gerfen wrote:
> On Sat, Jan 31, 2015 at 8:53 AM, Leigh wrote:
>> At the very basic end of the spectrum, we could have openssl_get_tag
>> and openssl_set_tag, or add an extra parameter to the end of
>> openssl_encrypt and openssl_decrypt (pass by ref for encrypt,
On Sat, Jan 31, 2015 at 8:53 AM, Leigh wrote:
> Hi list,
>
> A couple of bug reports have highlighted the fact that our
> openssl_encrypt and openssl_decrupt functions have no way of getting
> or setting tags required for authenticated cipher modes (i.e. GCM,
> CCM, OCB (not sure if this is avail
Hi list,
A couple of bug reports have highlighted the fact that our
openssl_encrypt and openssl_decrupt functions have no way of getting
or setting tags required for authenticated cipher modes (i.e. GCM,
CCM, OCB (not sure if this is available in OpenSSL)).
https://bugs.php.net/bug.php?id=68962
h
