It has been discovered that multiple carry propagation bugs are
producing wrong results in calculations. They affect the NIST P-256 and
P-384 curves. The P-256 bug is in the C code and affects multiple
architectures. The P-384 bug is in the assembly code and only affects 64
bit x86. The computation compiles a certain curve point with 1, which
should not change the coordinates, however it does.