crypto: lib/chacha20poly1305 - use chacha20_crypt()
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>
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@ -66,14 +66,14 @@ __chacha20poly1305_encrypt(u8 *dst, const u8 *src, const size_t src_len,
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__le64 lens[2];
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} b;
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chacha_crypt(chacha_state, b.block0, pad0, sizeof(b.block0), 20);
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chacha20_crypt(chacha_state, b.block0, pad0, sizeof(b.block0));
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poly1305_init(&poly1305_state, b.block0);
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poly1305_update(&poly1305_state, ad, ad_len);
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if (ad_len & 0xf)
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poly1305_update(&poly1305_state, pad0, 0x10 - (ad_len & 0xf));
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chacha_crypt(chacha_state, dst, src, src_len, 20);
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chacha20_crypt(chacha_state, dst, src, src_len);
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poly1305_update(&poly1305_state, dst, src_len);
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if (src_len & 0xf)
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@ -140,7 +140,7 @@ __chacha20poly1305_decrypt(u8 *dst, const u8 *src, const size_t src_len,
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if (unlikely(src_len < POLY1305_DIGEST_SIZE))
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return false;
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chacha_crypt(chacha_state, b.block0, pad0, sizeof(b.block0), 20);
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chacha20_crypt(chacha_state, b.block0, pad0, sizeof(b.block0));
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poly1305_init(&poly1305_state, b.block0);
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poly1305_update(&poly1305_state, ad, ad_len);
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@ -160,7 +160,7 @@ __chacha20poly1305_decrypt(u8 *dst, const u8 *src, const size_t src_len,
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ret = crypto_memneq(b.mac, src + dst_len, POLY1305_DIGEST_SIZE);
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if (likely(!ret))
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chacha_crypt(chacha_state, dst, src, dst_len, 20);
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chacha20_crypt(chacha_state, dst, src, dst_len);
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memzero_explicit(&b, sizeof(b));
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@ -241,7 +241,7 @@ bool chacha20poly1305_crypt_sg_inplace(struct scatterlist *src,
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b.iv[1] = cpu_to_le64(nonce);
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chacha_init(chacha_state, b.k, (u8 *)b.iv);
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chacha_crypt(chacha_state, b.block0, pad0, sizeof(b.block0), 20);
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chacha20_crypt(chacha_state, b.block0, pad0, sizeof(b.block0));
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poly1305_init(&poly1305_state, b.block0);
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if (unlikely(ad_len)) {
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@ -278,14 +278,14 @@ bool chacha20poly1305_crypt_sg_inplace(struct scatterlist *src,
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if (unlikely(length < sl))
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l &= ~(CHACHA_BLOCK_SIZE - 1);
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chacha_crypt(chacha_state, addr, addr, l, 20);
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chacha20_crypt(chacha_state, addr, addr, l);
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addr += l;
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length -= l;
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}
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if (unlikely(length > 0)) {
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chacha_crypt(chacha_state, b.chacha_stream, pad0,
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CHACHA_BLOCK_SIZE, 20);
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chacha20_crypt(chacha_state, b.chacha_stream, pad0,
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CHACHA_BLOCK_SIZE);
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crypto_xor(addr, b.chacha_stream, length);
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partial = length;
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}
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