EC_POINT_is_on_curve does not return a boolean
The function EC_POINT_is_on_curve does not return a boolean value. It returns 1 if the point is on the curve, 0 if it is not, and -1 on error. Many usages within OpenSSL were incorrectly using this function and therefore not correctly handling error conditions. With thanks to the Open Crypto Audit Project for reporting this issue. Reviewed-by:Kurt Roeckx <kurt@openssl.org> (cherry picked from commit 68886be7) Conflicts: crypto/ec/ec2_oct.c crypto/ec/ecp_oct.c crypto/ec/ectest.c
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