在golang boringssl中验证FIPS模式

Question

如何在golang dev boring crypto分支中验证是否为二进制文件启用了fips模式？除了内部golang测试之外，我看不到简单的方法。

Answer 1

从该文件中：

https://go.googlesource.com/go/+/dev.boringcrypto/src/crypto/tls/fipsonly/fipsonly.go

// Package fipsonly restricts all TLS configuration to FIPS-approved settings.
//
// The effect is triggered by importing the package anywhere in a program, as in:
//
//  import _ "crypto/tls/fipsonly"
//
// This package only exists in the dev.boringcrypto branch of Go.

通过在程序中包含该导入语句，只有在使用dev.boringcrypto分支时才会对其进行编译。

下面是一个测试main.go：

package main

import (
    "fmt"
    _ "crypto/tls/fipsonly"
)

func main() {
    fmt.Println("Hello FIPS")
}

使用Go的dev.boringcrypto分支：

$ go version
go version go1.12.9b4 linux/amd64
$ go run main.go
Hello FIPS

使用Go的正常版本：

$ go version
go version go1.12.9 darwin/amd64
$ go run main.go
main.go:4:2: cannot find package "crypto/tls/fipsonly" in any of:
    /Users/ray/.gimme/versions/go1.12.9.darwin.amd64/src/crypto/tls/fipsonly (from $GOROOT)
    /Users/ray/go/src/crypto/tls/fipsonly (from $GOPATH)