[openssl-users] ECDSA_SIG_new and ECDSA_SIG_free details
kgoldman at us.ibm.com
Tue Jan 3 19:55:35 UTC 2017
1 - Is this a bit of a bug?
ECDSA_SIG_free() frees the r and s BIGNUMs before is frees the structure
itself. However, ECDSA_SIG_new() doesn't set r and s to
NULL. It calls zalloc, which sets them to 0x00 bytes.
OK, in most platforms, the NULL pointer is an all 0x00 bytes value, but
it's not guaranteed by the C standard.
2 - It would be nice if the man page advised that ECDSA_SIG_free() frees
the two r and s BIGNUMs before is frees the structure iteslf
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