[gnutls-devel] GnuTLS | pk: implement deterministic ECDSA/DSA for provable signing (!1051)

Development of GNU's TLS library gnutls-devel at lists.gnutls.org
Thu Aug 8 12:51:18 CEST 2019

Nikos Mavrogiannopoulos started a new discussion on lib/crypto-backend.h: https://gitlab.com/gnutls/gnutls/merge_requests/1051#note_201532166

>  	/* if non-zero, the legacy value for PKCS#7 signatures will be
>  	 * written for RSA signatures. */
>  	unsigned int legacy;
> +
> +	/* the digest used by ECDSA/DSA */
> +	gnutls_digest_algorithm_t dsa_dig;
> +
> +	/* flags may include GNUTLS_PK_FLAG_PROVABLE for deterministic

Should we introduce/use a flag `PK_FLAG_REPRODUCIBLE`? The provable doesn't seem to describe what is going on here.

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