HPKE

enum · iOS 17.0+ · SDK 27.1

enum HPKE

A container for hybrid public key encryption (HPKE) operations. Hybrid public key encryption (HPKE) uses a symmetric encryption algorithm to encrypt data, and encapsulates the symmetric encryption material using a public key encryption algorithm. HPKE ensures that the ciphertext wasn't tampered with after its creation. It can also check the validity of additional cleartext data in apps where you need to send headers or other metadata as cleartext. HPKE optionally incorporates sender authentication, allowing the recipient to validate the authenticity of messages using the sender's public key. HPKE is described in the Internet Research Task Force (IRTF) document [RFC 9180](https://www.ietf.org/rfc/rfc9180.pdf). ## Topics ### Sending and receiving messages - ``Sender`` - ``Recipient`` ### Choosing cryptographic algorithms - ``Ciphersuite`` - ``AEAD`` - ``KDF`` - ``KEM`` - ``DHKEM`` ### Handling errors - ``Errors``

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This type has no directly callable members in this snapshot. See the framework’s skipped declarations for unsupported APIs.

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