Hey,
I'm trying to create JWS with PS256 algorithm and the signature i create is Invalid.

here is the code i try:

func GenerateSignaturePS256() (string,error) {

//Read RSA private key File.
	l_privateKey, err := ioutil.ReadFile("/<path_to_cert>/rsa.key") 
	if err != nil {
		return "", err
	}

//Read RSA public key File.
	l_publicKey, err := ioutil.ReadFile("/<path_to_cert>/rsa.crt")
	if err != nil {
		return "", err
	}

//Remove First Line and Last Line From public Key RSA certificate.
	l_pubRmPad := strings.TrimPrefix(string(l_publicKey), "-----BEGIN CERTIFICATE-----\n")
	l_pubRmPad = strings.TrimRight(l_pubRmPad, "\n-----END CERTIFICATE-----")


	token := jws.NewWithClaims(jws.SigningMethodPS256, jws.MapClaims{
		"data":         "My Data",
	})

	token.Header["x5c"] = []string{l_pubRmPad}

	var rsaPSSKey *rsa.PrivateKey
	if rsaPSSKey, err = jws.ParseRSAPrivateKeyFromPEM(l_privateKey); err != nil {
		return "", err
	}
	// Sign and get the complete encoded token as a string using the secret
	tokenString, err := token.SignedString(rsaPSSKey)
	fmt.Println(token.Valid, tokenString)

return tokenString, err
}

The Print Result :

false 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.eyJkYXRhIjoiTXkgRGF0YSJ9.m_snagatlRJukNLTBlQeBZLELVs7ky-2FvcVzVzQcKPJCQGkh8WWoWP_2kdTizL3gY_oxp41-bj1v1V33BkZ18d6JsSmUpokGTiqjn6EVsBmptNVt3S-bGqgYzJ-gkV5H5AH98E0a7N5fhnxGE1y-uHwYiPbnxxCnS3iieqGKd_gpg-KxutGBycAufB-NqmTrb7X1LyaqUH2UR2m489v9QFQZ6FzM0gIGlOylijM4GGv8nt_4k4QnFsrBRsWXnfrGumdKR8w_oiN8wqA40txviaGWlSXZ2UpSqvQuIcsqaLwENDq4HTv0k9R4ju-A3p0MGyCM013IZ_2tg5Iavx4ebbZIdQaTv7USWSU1-QJdbK67pN9tYKQmYAsFOjkc5sR-5GXdHccL7ZzfP0_KYXDU_dHqHuELwraSySZyxaRv0Y9AisM0jEcbuK0fIab6OmtPWPuANzdHZ3rWJPs4eueWL_wmdG0JjmaY1gWnI6QIasi_UREHSaWQuLB3ZUV7AhWF-Vcx68PBmQ-76dAQCS2TCHx8Vzc6z6ae8tsh2CihtjgjXK-4FdoPKRAJqeTBywHK0O7hl3M1BHAaDsDrJvS9exEUc2gXO845q4Tg_KT68cxgN9qj6h2WpcKh5H-UPrb-wHrGJaYBM6qP1S8Fyb30D91FsLM7-ncVYo7QdzrY3o

I try to use PyJWT package to create JWS with the "PS256" alg and the same arguments in the header and the signature is Valid.

if my code in go is incorrect please help me understand the wrong part.
can it be a bug in the SigningMethodRSAPSS implementation?
i tried to validate the JWS given in "rsa_pss_test.go" too and their signature Invalid either

Thank you,
Yaniv