The deprecated ASN.1 type LONG / ZLONG (incorrectly) produced zero
length INTEGER encoding for zeroes. For the sake of backward
compatibility, we allow those to be read without fault when using the
replacement types INT32 / UINT32 / INT64 / UINT64.
Fixes#7134
Reviewed-by: Tim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7144)
Clearing a misunderstanding. The routines c2i_uint64_int() and
i2c_uint64_int() expect to receive that internal values are absolute
and with a separate sign flag, and the x_int64.c code handles values
that aren't absolute and have the sign bit embedded. We therefore
need to convert between absolute and non-absolute values for the
encoding of negative values to be correct.
[extended tests]
Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3160)
