[openssl-users] Regarding Signature Algorithm: ecdsa-with-SHA512

Abhilash K.V abhilashkv at gmail.com
Mon Jul 18 03:34:32 UTC 2016


Hi Steve,

Thanks for the information I was not aware of that.

Yes, did that modification and now I am getting it as following (I passed
EVP_sha512()).

Signature Algorithm: ecdsa-with-SHA256

Thanks,
Abhilash.

On Sun, Jul 17, 2016 at 8:05 PM, Dr. Stephen Henson <steve at openssl.org>
wrote:

> On Sun, Jul 17, 2016, Abhilash K.V wrote:
>
> > I am trying to generate a CSR using EC and wanted to have signature
> > algorithm as ???ecdsa-with-SHA512???.
> >
> > But in the generated csr I am getting signature algorithms as
> ???Signature
> > Algorithm: ecdsa-with-SHA1??? always.
> >
> >
> >     if (!X509_REQ_sign(req, privkey, EVP_ecdsa())) {
> >
>
> Don't use EVP_ecdsa() it is an old "linked digest" which uses SHA1 and is
> only
> retained for compatibility with old code. Use EVP_sha512() instead.
>
> Steve.
> --
> Dr Stephen N. Henson. OpenSSL project core developer.
> Commercial tech support now available see: http://www.openssl.org
> --
> openssl-users mailing list
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>
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