CRYPTO_hchacha_20
LCRYPTO_ALIAS(CRYPTO_hchacha_20);
CRYPTO_hchacha_20(subkey, key, iv);
void CRYPTO_hchacha_20(unsigned char out[32],
CRYPTO_hchacha_20(subkey, c20_ctx->key, nonce);
CRYPTO_hchacha_20(subkey, c20_ctx->key, nonce);
LCRYPTO_USED(CRYPTO_hchacha_20);
CRYPTO_hchacha_20(out, key, nonce);