[openssl-users] Is it mandatory to reverse windows signature while doing verification in OpenSSL?

Viktor Dukhovni openssl-users at dukhovni.org
Wed Apr 1 06:27:33 UTC 2015

On Wed, Apr 01, 2015 at 06:12:36AM +0000, Rishabh K Dubey wrote:

> We have signed data on Win 7 using Crypto APIs and generated
> signature.

What sort of "signature" is that?

> We have observed this signature data needs to be reversed
> for verification using OpenSSL.

What does "reversed" mean?

> If we reverse signature data and
> pass it to OpenSSL verification command then OpenSSL verifies it
> successfully.

What command would that be?

> We wanted to confirm, whether such reversing of
> signature bytes is valid operation or not.

Rather difficult to say, since you've provided zero information.


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