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update hash algorithm for signing the cookie for xsrf token

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Due to the chosen-prefix collision in SHA-1(details at https://sha-mbles.github.io/), SHA-1 hash functions should to be deprecated and SHA-2/SHA-3 should be used instead.

Signed-off-by: wang yan <wangyan@vmware.com>
This commit is contained in:
wang yan
2020-02-06 17:26:04 +08:00
parent aa90c67a75
commit a768bf8f00
2 changed files with 6 additions and 6 deletions
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6
context/context.go
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@ -25,7 +25,7 @@ package context
import (
"bufio"
"crypto/hmac"
"crypto/sha1"
"crypto/sha256"
"encoding/base64"
"errors"
"fmt"
@ -123,7 +123,7 @@ func (ctx *Context) GetSecureCookie(Secret, key string) (string, bool) {
timestamp := parts[1]
sig := parts[2]
h := hmac.New(sha1.New, []byte(Secret))
h := hmac.New(sha256.New, []byte(Secret))
fmt.Fprintf(h, "%s%s", vs, timestamp)
if fmt.Sprintf("%02x", h.Sum(nil)) != sig {
@ -137,7 +137,7 @@ func (ctx *Context) GetSecureCookie(Secret, key string) (string, bool) {
func (ctx *Context) SetSecureCookie(Secret, name, value string, others ...interface{}) {
vs := base64.URLEncoding.EncodeToString([]byte(value))
timestamp := strconv.FormatInt(time.Now().UnixNano(), 10)
h := hmac.New(sha1.New, []byte(Secret))
h := hmac.New(sha256.New, []byte(Secret))
fmt.Fprintf(h, "%s%s", vs, timestamp)
sig := fmt.Sprintf("%02x", h.Sum(nil))
cookie := strings.Join([]string{vs, timestamp, sig}, "|")