On Mon, May 30, 2005, Suram Chandra Sekhar wrote:
> Hi all,
> I want to know the sequence for signing and verifying a piece of data as
> per PKCS1 v2.0 specification using signature algorithm identifier as SHA1
> using openssl v 0.9.7c.
> My understanding is that RSA_sign uses the PKCS1v2.1 specification.
>
> Awaiting your valuable response..
>
There are two signature schemes in PKCS#1 v2.1.
RSASSA-PKCS1-V1_5 is supported by RSA_sign() with details in the relevant
manual pages.
RSASSA-PSS is *not* supported by RSA_sign(). A prototype version of PSS padding
code has appeared in the last 0.9.7-stable snapshots but these are not
integrated into RSA_sign() and probably never will be in the 0.9.7 tree
because various changes to the underlying structures would be needed.
Steve.
--
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