Imports of package bigmod

PathSynopsis
crypto/internal/fips140/checkPackage check implements the FIPS 140 load-time code+data verification.
crypto/internal/fips140deps/byteorder
crypto/internal/fips140deps/cpu
crypto/internal/implPackage impl is a registry of alternative implementations of cryptographic primitives, to allow selecting them for testing.
errorsPackage errors implements functions to manipulate errors.
math/bitsPackage bits implements bit counting and manipulation functions for the predeclared unsigned integer types.