ceph-csi/vendor/github.com/aws/aws-sdk-go-v2/internal/rand/rand.go
Rakshith R 4f0bb2315b rbd: add aws-sts-metdata encryption type
With Amazon STS and kubernetes cluster is configured with
OIDC identity provider, credentials to access Amazon KMS
can be fetched using oidc-token(serviceaccount token).
Each tenant/namespace needs to create a secret with aws region,
role and CMK ARN.
Ceph-CSI will assume the given role with oidc token and access
aws KMS, with given CMK to encrypt/decrypt DEK which will stored
in the image metdata.

Refer: https://docs.aws.amazon.com/STS/latest/APIReference/welcome.html
Resolves: #2879

Signed-off-by: Rakshith R <rar@redhat.com>
2022-03-16 07:29:56 +00:00

34 lines
731 B
Go

package rand
import (
"crypto/rand"
"fmt"
"io"
"math/big"
)
func init() {
Reader = rand.Reader
}
// Reader provides a random reader that can reset during testing.
var Reader io.Reader
var floatMaxBigInt = big.NewInt(1 << 53)
// Float64 returns a float64 read from an io.Reader source. The returned float will be between [0.0, 1.0).
func Float64(reader io.Reader) (float64, error) {
bi, err := rand.Int(reader, floatMaxBigInt)
if err != nil {
return 0, fmt.Errorf("failed to read random value, %v", err)
}
return float64(bi.Int64()) / (1 << 53), nil
}
// CryptoRandFloat64 returns a random float64 obtained from the crypto rand
// source.
func CryptoRandFloat64() (float64, error) {
return Float64(rand.Reader)
}