ChaCha
LCRYPTO_ALIAS(ChaCha);
void ChaCha(ChaCha_ctx *ctx, unsigned char *out, const unsigned char *in,
ChaCha((ChaCha_ctx *)ctx->cipher_data, out, in, len);
ChaCha(&cpx->chacha, poly1305_key, poly1305_key,
ChaCha(&cpx->chacha, out, in, len);
LCRYPTO_USED(ChaCha);
ChaCha(&ctx, out, in, tv->len);
ChaCha(&ctx, out, in, size);
ChaCha(&ctx, out, in, len + 1);
ChaCha(&ctx, out + i, in + i, 1);