const crypto/internal/hpke.AEAD_AES_256_GCM

2 uses

	crypto/internal/hpke (current package)
		hpke.go#L158: 	AEAD_AES_256_GCM      = 0x0002
		hpke.go#L169: 	AEAD_AES_256_GCM:      {keySize: 32, nonceSize: 12, aead: aesGCMNew},

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