Getting error expected key of size 256 bits, but was given 344 bits

[abhowmik]

Hi,
I am trying to implement your code with a shareed key that we are generating through our KMS System.
But I get the below error:
AesGcm.Encrypt(): expected key of size 256 bits, but was given 344 bits.
Here is the code below
func encrypt(){
payload := "ansivadis@xxy.com"
keyBytes := []byte("8EGQNuDdLuiqqcQDrkBOLHcysp0Ans1R1PT5qM5_VP8")

if(keyBytes==nil) {
	panic("invalid key format")
}
//fmt.Println(keyBytes)

token,err := jose.Encrypt(payload, jose.DIR, jose.A256GCM, keyBytes)
fmt.Print(err)
if(err==nil) {
    //go use token
    fmt.Printf("\nDIR A256GCM = %v\n",token)
}

}

func main(){
encrypt()
}

Can you please tell me how to fix this issue with this library?

[abhowmik]

It is working now