const crypto/aes.gcmMinimumTagSize

2 uses

	crypto/aes (current package)
		aes_gcm.go#L36: 	gcmMinimumTagSize    = 12 // NIST SP 800-38D recommends tags with 12 or more bytes.
		aes_gcm.go#L144: 	if g.tagSize < gcmMinimumTagSize {