On Mon, 18 Nov 2019 at 08:22, Eric Biggers <ebiggers@xxxxxxxxxx> wrote:
>
> From: Eric Biggers <ebiggers@xxxxxxxxxx>
>
> Use chacha20_crypt() instead of chacha_crypt(), since it's not really
> appropriate for users of the ChaCha library API to be passing the number
> of rounds as an argument.
>
> Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx>
Acked-by: Ard Biesheuvel <ardb@xxxxxxxxxx>
> ---
> lib/crypto/chacha20poly1305.c | 16 ++++++++--------
> 1 file changed, 8 insertions(+), 8 deletions(-)
>
> diff --git a/lib/crypto/chacha20poly1305.c b/lib/crypto/chacha20poly1305.c
> index 821e5cc9b14e..6d83cafebc69 100644
> --- a/lib/crypto/chacha20poly1305.c
> +++ b/lib/crypto/chacha20poly1305.c
> @@ -66,14 +66,14 @@ __chacha20poly1305_encrypt(u8 *dst, const u8 *src, const size_t src_len,
> __le64 lens[2];
> } b;
>
> - chacha_crypt(chacha_state, b.block0, pad0, sizeof(b.block0), 20);
> + chacha20_crypt(chacha_state, b.block0, pad0, sizeof(b.block0));
> poly1305_init(&poly1305_state, b.block0);
>
> poly1305_update(&poly1305_state, ad, ad_len);
> if (ad_len & 0xf)
> poly1305_update(&poly1305_state, pad0, 0x10 - (ad_len & 0xf));
>
> - chacha_crypt(chacha_state, dst, src, src_len, 20);
> + chacha20_crypt(chacha_state, dst, src, src_len);
>
> poly1305_update(&poly1305_state, dst, src_len);
> if (src_len & 0xf)
> @@ -140,7 +140,7 @@ __chacha20poly1305_decrypt(u8 *dst, const u8 *src, const size_t src_len,
> if (unlikely(src_len < POLY1305_DIGEST_SIZE))
> return false;
>
> - chacha_crypt(chacha_state, b.block0, pad0, sizeof(b.block0), 20);
> + chacha20_crypt(chacha_state, b.block0, pad0, sizeof(b.block0));
> poly1305_init(&poly1305_state, b.block0);
>
> poly1305_update(&poly1305_state, ad, ad_len);
> @@ -160,7 +160,7 @@ __chacha20poly1305_decrypt(u8 *dst, const u8 *src, const size_t src_len,
>
> ret = crypto_memneq(b.mac, src + dst_len, POLY1305_DIGEST_SIZE);
> if (likely(!ret))
> - chacha_crypt(chacha_state, dst, src, dst_len, 20);
> + chacha20_crypt(chacha_state, dst, src, dst_len);
>
> memzero_explicit(&b, sizeof(b));
>
> @@ -241,7 +241,7 @@ bool chacha20poly1305_crypt_sg_inplace(struct scatterlist *src,
> b.iv[1] = cpu_to_le64(nonce);
>
> chacha_init(chacha_state, b.k, (u8 *)b.iv);
> - chacha_crypt(chacha_state, b.block0, pad0, sizeof(b.block0), 20);
> + chacha20_crypt(chacha_state, b.block0, pad0, sizeof(b.block0));
> poly1305_init(&poly1305_state, b.block0);
>
> if (unlikely(ad_len)) {
> @@ -278,14 +278,14 @@ bool chacha20poly1305_crypt_sg_inplace(struct scatterlist *src,
>
> if (unlikely(length < sl))
> l &= ~(CHACHA_BLOCK_SIZE - 1);
> - chacha_crypt(chacha_state, addr, addr, l, 20);
> + chacha20_crypt(chacha_state, addr, addr, l);
> addr += l;
> length -= l;
> }
>
> if (unlikely(length > 0)) {
> - chacha_crypt(chacha_state, b.chacha_stream, pad0,
> - CHACHA_BLOCK_SIZE, 20);
> + chacha20_crypt(chacha_state, b.chacha_stream, pad0,
> + CHACHA_BLOCK_SIZE);
> crypto_xor(addr, b.chacha_stream, length);
> partial = length;
> }
> --
> 2.24.0
>
