Function isAESGCMPreferred

cipher_suites.go:390–403

isAESGCMPreferred returns whether we have hardware support for AES-GCM, and the first known cipher in the peer's preference list is an AES-GCM cipher, implying the peer also has hardware support for it.

(ciphers []uint16)

// first known cipher in the peer's preference list is an AES-GCM cipher,
// implying the peer also has hardware support for it.
func isAESGCMPreferred(ciphers []uint16) bool {
	if !hasAESGCMHardwareSupport {
		return false
	}
	for _, cID := range ciphers {
		if c := cipherSuiteByID(cID); c != nil {
			return aesgcmCiphers[cID]
		}
		if c := cipherSuiteTLS13ByID(cID); c != nil {
			return aesgcmCiphers[cID]
		}
	}
	return false
}

func cipherRC4(key, iv []byte, isRead bool) any {
	cipher, _ := rc4.NewCipher(key)