[−][src]Module sodiumoxide::crypto::kdf
Key derivation
Multiple secret subkeys can be derived from a single master key. Given the master key and a key identifier, a subkey can be deterministically computed. However, given a subkey, an attacker cannot compute the master key nor any other subkeys.
This API was introduced in libsodium 1.0.12
Example
use sodiumoxide::crypto::kdf; use sodiumoxide::crypto::secretbox; const CONTEXT: [u8; 8] = *b"Examples"; let key = kdf::gen_key(); let mut key1 = secretbox::Key([0; secretbox::KEYBYTES]); kdf::derive_from_key(&mut key1.0[..], 1, CONTEXT, &key).unwrap(); let mut key2 = secretbox::Key([0; secretbox::KEYBYTES]); kdf::derive_from_key(&mut key2.0[..], 2, CONTEXT, &key).unwrap(); let mut key3 = secretbox::Key([0; secretbox::KEYBYTES]); kdf::derive_from_key(&mut key3.0[..], 3, CONTEXT, &key).unwrap();
Re-exports
pub use self::blake2b::*; |
Modules
blake2b |
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