mirror of
https://github.com/minio/minio.git
synced 2024-12-28 08:05:55 -05:00
32 lines
550 B
Go
32 lines
550 B
Go
package sha256
|
|
|
|
import (
|
|
"io"
|
|
|
|
"crypto/sha256"
|
|
)
|
|
|
|
// Sum256 - single caller sha256 helper
|
|
func Sum256(data []byte) []byte {
|
|
d := sha256.New()
|
|
d.Write(data)
|
|
return d.Sum(nil)
|
|
}
|
|
|
|
// Sum - io.Reader based streaming sha256 helper
|
|
func Sum(reader io.Reader) ([]byte, error) {
|
|
d := sha256.New()
|
|
var err error
|
|
for err == nil {
|
|
length := 0
|
|
byteBuffer := make([]byte, 1024*1024)
|
|
length, err = reader.Read(byteBuffer)
|
|
byteBuffer = byteBuffer[0:length]
|
|
d.Write(byteBuffer)
|
|
}
|
|
if err != io.EOF {
|
|
return nil, err
|
|
}
|
|
return d.Sum(nil), nil
|
|
}
|