| Server IP : 185.124.137.165 / Your IP : 216.73.217.6 Web Server : LiteSpeed System : Linux id-dci-web1986.main-hosting.eu 5.14.0-611.26.1.el9_7.x86_64 #1 SMP PREEMPT_DYNAMIC Thu Jan 29 05:24:47 EST 2026 x86_64 User : u686484674 ( 686484674) PHP Version : 8.0.30 Disable Function : system, exec, shell_exec, passthru, mysql_list_dbs, ini_alter, dl, symlink, link, chgrp, leak, popen, apache_child_terminate, virtual, mb_send_mail MySQL : OFF | cURL : ON | WGET : ON | Perl : OFF | Python : OFF | Sudo : OFF | Pkexec : OFF Directory : /proc/self/root/opt/go/pkg/mod/github.com/aws/aws-sdk-go@v1.55.5/aws/signer/v4/ |
Upload File : |
package v4
import (
"encoding/hex"
"strings"
"time"
"github.com/aws/aws-sdk-go/aws/credentials"
)
type credentialValueProvider interface {
Get() (credentials.Value, error)
}
// StreamSigner implements signing of event stream encoded payloads
type StreamSigner struct {
region string
service string
credentials credentialValueProvider
prevSig []byte
}
// NewStreamSigner creates a SigV4 signer used to sign Event Stream encoded messages
func NewStreamSigner(region, service string, seedSignature []byte, credentials *credentials.Credentials) *StreamSigner {
return &StreamSigner{
region: region,
service: service,
credentials: credentials,
prevSig: seedSignature,
}
}
// GetSignature takes an event stream encoded headers and payload and returns a signature
func (s *StreamSigner) GetSignature(headers, payload []byte, date time.Time) ([]byte, error) {
credValue, err := s.credentials.Get()
if err != nil {
return nil, err
}
sigKey := deriveSigningKey(s.region, s.service, credValue.SecretAccessKey, date)
keyPath := buildSigningScope(s.region, s.service, date)
stringToSign := buildEventStreamStringToSign(headers, payload, s.prevSig, keyPath, date)
signature := hmacSHA256(sigKey, []byte(stringToSign))
s.prevSig = signature
return signature, nil
}
func buildEventStreamStringToSign(headers, payload, prevSig []byte, scope string, date time.Time) string {
return strings.Join([]string{
"AWS4-HMAC-SHA256-PAYLOAD",
formatTime(date),
scope,
hex.EncodeToString(prevSig),
hex.EncodeToString(hashSHA256(headers)),
hex.EncodeToString(hashSHA256(payload)),
}, "\n")
}