const crypto/cipher.gcmStandardNonceSize

4 uses

	crypto/cipher (current package)
		gcm.go#L85: 	return newGCMWithNonceAndTagSize(cipher, gcmStandardNonceSize, gcmTagSize)
		gcm.go#L108: 	return newGCMWithNonceAndTagSize(cipher, gcmStandardNonceSize, tagSize)
		gcm.go#L156: 	gcmStandardNonceSize = 12
		gcm.go#L397: 	if len(nonce) == gcmStandardNonceSize {