ChaCha20Aligned::Seek

Set the 96‐bit nonce and 32‐bit block counter.

Synopsis

Declared in <crypto/chacha20.h>

void
Seek(
    Nonce96 nonce,
    uint32_t block_counter) noexcept;

Description

Block_counter selects a position to seek to (to byte BLOCKLEN*block_counter). After 256 GiB, the block counter overflows, and nonce.first is incremented.

Parameters

Name

Description

nonce

The 96‐bit nonce to seek to.

block_counter

The 32‐bit block counter selecting the position within the stream.

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