Re-design of the original gocryptfs code to work as a library.
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libgocryptfs/internal/stupidgcm/prefer.go

27 lines
517 B

package stupidgcm
import (
"golang.org/x/sys/cpu"
)
// PreferOpenSSL tells us if OpenSSL is faster than Go GCM on this machine.
//
// Go GCM is only faster if the CPU:
//
// 1) Is X86
// 2) Has AES instructions
// 3) Go is v1.6 or higher
//
// See https://github.com/rfjakob/gocryptfs/wiki/CPU-Benchmarks
// for benchmarks.
func PreferOpenSSL() bool {
if BuiltWithoutOpenssl {
return false
}
// Safe to call on other architectures - will just read false.
if cpu.X86.HasAES {
return false
}
return true
}