Module chunk_encryption 

Chunk-level encryption with per-chunk nonces for CHIE Protocol.

This module provides:

• Per-chunk encryption with unique nonces
• Chunk key derivation from master key
• Streaming chunk encryption/decryption

Structs

ChunkDecryptor

Chunk decryptor for streaming decryption.

ChunkEncryptor

Chunk encryptor for streaming encryption.

EncryptedChunk

Encrypted chunk with metadata.

Enums

ChunkEncryptionError

Chunk encryption error.

Constants

ENCRYPTED_CHUNK_SIZE

Default chunk size for encryption (256 KB).

NONCE_SIZE

Nonce size (12 bytes for ChaCha20-Poly1305).

Functions

decrypt_chunk

Decrypt a single chunk.

decrypt_content

Decrypt chunks to a writer.

derive_chunk_key

Derive a chunk-specific key from the master key.

derive_chunk_nonce

Derive a deterministic nonce for a chunk.

encrypt_chunk_with_index

Encrypt a single chunk with a specific index.

encrypt_content

Encrypt content from a reader to encrypted chunks.