mutable strings in go

According to the Go language specification:

Strings are immutable: once created, it is impossible to change the contents of a string.

We’ll see about that.

data := []byte("yellow submarine")
str := *(*string)(unsafe.Pointer(&data))

for i := range data {
    data[i] = 'x'
    fmt.Printf("%s\n%s\n\n", string(data), str)
}

Try it out yourself.

• 2020-12-16 : : rosen: censorship-resistant proxy tunnel
• 2020-02-20 : : plausibly deniable encryption
• 2019-07-20 : : memory retention attacks
• 2019-07-18 : : encrypting secrets in memory
• 2019-05-02 : : to slice or not to slice
• 2017-08-03 : : memory security in go
• 2017-07-30 : : quantum key-exchange