hopr_crypto_sphinx::prelude

Trait SphinxHeaderSpec

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pub trait SphinxHeaderSpec {
    type KeyId: BytesRepresentable + Clone;
    type Pseudonym: Pseudonym;
    type RelayerData: BytesRepresentable;
    type PacketReceiverData: BytesRepresentable;
    type SurbReceiverData: BytesRepresentable;
    type PRG: StreamCipher + StreamCipherSeek + KeyIvInit;
    type UH: UniversalHash + KeyInit;

Show 9 associated constants and 2 methods
    const MAX_HOPS: NonZeroUsize;
    const RELAYER_DATA_SIZE: usize = <Self::RelayerData>::SIZE;
    const SURB_RECEIVER_DATA_SIZE: usize = <Self::SurbReceiverData>::SIZE;
    const RECEIVER_DATA_SIZE: usize = <Self::PacketReceiverData>::SIZE;
    const KEY_ID_SIZE: NonZeroUsize = _;
    const TAG_SIZE: usize = <<Self::UH as crypto_traits::BlockSizeUser>::BlockSize>::USIZE;
    const ROUTING_INFO_LEN: usize = _;
    const HEADER_LEN: usize = _;
    const EXT_HEADER_LEN: usize = _;

    // Provided methods
    fn generate_filler(secrets: &[SharedSecret]) -> Result<Box<[u8]>> { ... }
    fn new_prg(secret: &SecretKey) -> Result<Self::PRG> { ... }

}
Expand description

Contains the necessary size and type specifications for the Sphinx packet header.

Required Associated Constants§

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const MAX_HOPS: NonZeroUsize

Maximum number of hops.

Provided Associated Constants§

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const RELAYER_DATA_SIZE: usize = <Self::RelayerData>::SIZE

Size of the additional data for relayers.

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const SURB_RECEIVER_DATA_SIZE: usize = <Self::SurbReceiverData>::SIZE

Size of the additional data included in SURBs.

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const RECEIVER_DATA_SIZE: usize = <Self::PacketReceiverData>::SIZE

Size of the additional data for the packet receiver.

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const KEY_ID_SIZE: NonZeroUsize = _

Size of the public key identifier

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const TAG_SIZE: usize = <<Self::UH as crypto_traits::BlockSizeUser>::BlockSize>::USIZE

Size of the one-time authenticator tag.

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const ROUTING_INFO_LEN: usize = _

Length of the header routing information per hop.

The value shall not be overridden.

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const HEADER_LEN: usize = _

Length of the whole Sphinx header.

The value shall not be overridden.

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const EXT_HEADER_LEN: usize = _

Extended header size used for computations.

The value shall not be overridden.

Required Associated Types§

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type KeyId: BytesRepresentable + Clone

Public key identifier type.

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type Pseudonym: Pseudonym

Pseudonym used to represent node for SURBs.

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type RelayerData: BytesRepresentable

Type representing additional data for relayers.

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type PacketReceiverData: BytesRepresentable

Type representing additional data delivered to the packet receiver.

It is delivered on both forward and return paths.

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type SurbReceiverData: BytesRepresentable

Type representing additional data delivered with each SURB to the packet receiver.

It is delivered only on the forward path.

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type PRG: StreamCipher + StreamCipherSeek + KeyIvInit

Pseudo-Random Generator function used to encrypt and decrypt the Sphinx header.

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type UH: UniversalHash + KeyInit

One-time authenticator used for Sphinx header tag.

Provided Methods§

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fn generate_filler(secrets: &[SharedSecret]) -> Result<Box<[u8]>>

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fn new_prg(secret: &SecretKey) -> Result<Self::PRG>

Instantiates a new Pseudo-Random Generator.

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors§