[openssl-dev] [openssl.org #4436] [Openssl 1.1.0] ECDSA_SIG_get0() for const ECDSA_SIG *

[Grandi, Andrea]

Hi Felix,

I have seen the same warning during the compilation and I agree with you that it would be nice to have an API that takes const variable.

Regards,
Andrea

-----Original Message-----
From: openssl-dev [mailto:openssl-dev-bounces at openssl.org] On Behalf Of Schüller Felix via RT
Sent: Thursday, March 17, 2016 9:19 AM
Cc: openssl-dev at openssl.org
Subject: [openssl-dev] [openssl.org #4436] [Openssl 1.1.0] ECDSA_SIG_get0() for const ECDSA_SIG *

Hallo,

since the struct ECDSA_SIG ( -> ECDSA_SIG_st) is now opaque, one has to use ECDSA_SIG_get0() to access the values 'r' and 's'.
This works fine for non-const variables. But if one has a 'const ECDSA_SIG  *' (e.g. in verify_sig() of an ec_key-engine), this produces an error during compilation. So an additional version of ECDSA_SIG_get0() (taking a 'const ECDSA_SIG  *' and setting pointer to (const BIGNUM)) would be nice.

Kind regards

  Felix Schüller


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