C++ (Cpp) crypto_dh_decode_key Beispiele

Beispiel #1

Datei: qat_asym_algs.c Projekt: 01org/thunderbolt-software-kernel-tree

static int qat_dh_set_secret(struct crypto_kpp *tfm, const void *buf,
			     unsigned int len)
{
	struct qat_dh_ctx *ctx = kpp_tfm_ctx(tfm);
	struct device *dev = &GET_DEV(ctx->inst->accel_dev);
	struct dh params;
	int ret;

	if (crypto_dh_decode_key(buf, len, &params) < 0)
		return -EINVAL;

	/* Free old secret if any */
	qat_dh_clear_ctx(dev, ctx);

	ret = qat_dh_set_params(ctx, &params);
	if (ret < 0)
		return ret;

	ctx->xa = dma_zalloc_coherent(dev, ctx->p_size, &ctx->dma_xa,
				      GFP_KERNEL);
	if (!ctx->xa) {
		qat_dh_clear_ctx(dev, ctx);
		return -ENOMEM;
	}
	memcpy(ctx->xa + (ctx->p_size - params.key_size), params.key,
	       params.key_size);

	return 0;
}

Beispiel #2

Datei: dh.c Projekt: AK101111/linux

static int dh_set_secret(struct crypto_kpp *tfm, void *buf, unsigned int len)
{
	struct dh_ctx *ctx = dh_get_ctx(tfm);
	struct dh params;

	if (crypto_dh_decode_key(buf, len, &params) < 0)
		return -EINVAL;

	if (dh_set_params(ctx, &params) < 0)
		return -EINVAL;

	ctx->xa = mpi_read_raw_data(params.key, params.key_size);
	if (!ctx->xa) {
		dh_clear_params(ctx);
		return -EINVAL;
	}

	return 0;
}