# Curve25519.Signing.PublicKey A Curve25519 public key used to verify cryptographic signatures. ``` struct PublicKey ``` ## Topics ### Creating a public key [`init(rawRepresentation: D) throws`](/documentation/CryptoKit/Curve25519/Signing/PublicKey/init(rawRepresentation:)) Creates a Curve25519 public key from a data representation. ### Representing the key [`var rawRepresentation: Data`](/documentation/CryptoKit/Curve25519/Signing/PublicKey/rawRepresentation) A representation of the public key. ### Verifying a signature [`func isValidSignature(S, for: D) -> Bool`](/documentation/CryptoKit/Curve25519/Signing/PublicKey/isValidSignature(_:for:)) Verifies an EdDSA signature over Curve25519. ## Relationships ### Conforms To [`Sendable`](/documentation/Swift/Sendable) [`SendableMetatype`](/documentation/Swift/SendableMetatype) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)