diff options
Diffstat (limited to 'src/lib/stream/chacha/chacha.h')
| -rw-r--r-- | src/lib/stream/chacha/chacha.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/lib/stream/chacha/chacha.h b/src/lib/stream/chacha/chacha.h index a4f3e3b75..d0e131315 100644 --- a/src/lib/stream/chacha/chacha.h +++ b/src/lib/stream/chacha/chacha.h @@ -34,11 +34,15 @@ class BOTAN_PUBLIC_API(2,0) ChaCha final : public StreamCipher void set_iv(const uint8_t iv[], size_t iv_len) override; /* - * ChaCha accepts 0, 8, or 12 byte IVs. The default IV is a 8 zero bytes. + * ChaCha accepts 0, 8, 12 or 24 byte IVs. + * The default IV is a 8 zero bytes. * An IV of length 0 is treated the same as the default zero IV. + * An IV of length 24 selects XChaCha mode */ bool valid_iv_length(size_t iv_len) const override; + size_t default_iv_length() const override { return 24; } + Key_Length_Specification key_spec() const override { return Key_Length_Specification(16, 32, 16); |