Function decrypt_segment

nodedb-array/src/segment/encrypt.rs:41–45

Decrypt an encrypted array segment blob (starting at byte 0 = `SEGA`). Returns the inner plaintext segment bytes (starting with `NDAS`).

(key: &WalEncryptionKey, blob: &[u8])

///
/// Returns the inner plaintext segment bytes (starting with `NDAS`).
pub(crate) fn decrypt_segment(key: &WalEncryptionKey, blob: &[u8]) -> Result<Vec<u8>, ArrayError> {
    decrypt_segment_envelope(key, &SEGA_MAGIC, blob).map_err(|e| ArrayError::DecryptionFailed {
        detail: e.to_string(),
    })
}

/// Sniff the first 4 bytes to determine if `blob` is a plaintext (`NDAS`)
/// or encrypted (`SEGA`) segment. Returns `true` if encrypted.