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Decrypt the given ``ciphertext`` using the IETF ratified chacha20poly1305
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:param ciphertext:
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:param nonce:
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Encrypt the given ``message`` using the "legacy" construction
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Decrypt the given ``ciphertext`` using the "legacy" construction
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Encrypt the given ``message`` using the long-nonces xchacha20poly1305
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:param nonce:
:type nonce: bytes
:param key:
:type key: bytes
:return: authenticated ciphertext
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Decrypt the given ``ciphertext`` using the long-nonces xchacha20poly1305
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:param nonce:
:type nonce: bytes
:param key:
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:return: message
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