Package randutil
Package randutil contains internal randomness utilities for various
crypto packages.
In the call graph viewer below, each node
is a function belonging to this package
and its children are the functions it
calls—perhaps dynamically.
The root nodes are the entry points of the
package: functions that may be called from
outside the package.
There may be non-exported or anonymous
functions among them if they are called
dynamically from another package.
Click a node to visit that function's source code.
From there you can visit its callers by
clicking its declaring func
token.
Functions may be omitted if they were
determined to be unreachable in the
particular programs or tests that were
analyzed.
func MaybeReadByte(r io.Reader)
MaybeReadByte reads a single byte from r with ~50% probability. This is used
to ensure that callers do not depend on non-guaranteed behaviour, e.g.
assuming that rsa.GenerateKey is deterministic w.r.t. a given random stream.
This does not affect tests that pass a stream of fixed bytes as the random
source (e.g. a zeroReader).