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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Eric Biggers <ebiggers@google.com>
Date: Sun, 17 Nov 2019 23:22:16 -0800
Subject: [PATCH] crypto: lib/chacha20poly1305 - use chacha20_crypt()
commit 413808b71e6204b0cc1eeaa77960f7c3cd381d33 upstream.
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@google.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
---
lib/crypto/chacha20poly1305.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
--- a/lib/crypto/chacha20poly1305.c
+++ b/lib/crypto/chacha20poly1305.c
@@ -66,14 +66,14 @@ __chacha20poly1305_encrypt(u8 *dst, cons
__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, cons
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, cons
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(s
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(s
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;
}
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