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From: Arek Kusztal <arkadiuszx.kusztal@intel.com>
To: dev@dpdk.org
Cc: akhil.goyal@nxp.com, fiona.trahe@intel.com, shallyv@marvell.com,
	damianx.nowak@intel.com,
	Arek Kusztal <arkadiuszx.kusztal@intel.com>
Subject: [dpdk-dev] [PATCH v4 10/11] test: add pkcs1_5 padding simulation
Date: Wed, 17 Jul 2019 14:51:10 +0200
Message-ID: <20190717125111.11288-11-arkadiuszx.kusztal@intel.com> (raw)
In-Reply-To: <20190717125111.11288-1-arkadiuszx.kusztal@intel.com>

This patch adds function to simulate pkcs1_5 padding, it serves nothing
else than example. It provides no security and should not be used in
security context.

Signed-off-by: Arek Kusztal <arkadiuszx.kusztal@intel.com>
---
 app/test/test_cryptodev_asym_util.h | 54 +++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)

diff --git a/app/test/test_cryptodev_asym_util.h b/app/test/test_cryptodev_asym_util.h
index b3d9fb4..f984166 100644
--- a/app/test/test_cryptodev_asym_util.h
+++ b/app/test/test_cryptodev_asym_util.h
@@ -1,10 +1,64 @@
 /* SPDX-License-Identifier: BSD-3-Clause
  * Copyright(c) 2018 Cavium Networks
+ * Copyright (c) 2019 Intel Corporation
  */
 
 #ifndef TEST_CRYPTODEV_ASYM_TEST_UTIL_H__
 #define TEST_CRYPTODEV_ASYM_TEST_UTIL_H__
 
+/*
+ * Two functions below simulate pkcs 1.5 padding and serves only as an example,
+ * both offer no security.
+ */
+static inline int rsa_simulate_pkcs1_5_padding(int op, uint8_t *p,
+		int key_size, const uint8_t *src, int len) {
+
+	int ps_len;
+
+	if (len > key_size - 11)
+		return -1;
+	ps_len = key_size - len - 3;
+
+	*(p++) = 0;
+	*(p++) = op ? 1 : 2;
+	if (op) {
+		while (ps_len--)
+			*(p++) = 0xFF;
+	} else {
+		while (ps_len--) {
+			*p = (uint8_t)rand();
+			*p ^= !(*p);
+			p++;
+		}
+	}
+
+	*(p++) = 0;
+	memcpy(p, src, len);
+
+	return 0;
+}
+
+static inline int rsa_simulate_strip_pkcs1_5_padding(uint8_t *src,
+		int key_size) {
+	uint8_t tmp[key_size], *orig_src = src;
+	int i = 1;
+	++src;
+	while (*(src) && i < key_size) {
+		++i;
+		++src;
+	}
+	if (i == key_size)
+		return -1;
+
+	++i;
+	++src;
+
+	memcpy(tmp, src, key_size - i);
+	memcpy(orig_src, tmp, key_size - i);
+	return key_size - i;
+}
+
+
 /* Below Apis compare resulted buffer to original test vector */
 
 static inline int rsa_verify(struct rsa_test_data *rsa_param,
-- 
2.1.0


  parent reply index

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-17 12:51 [dpdk-dev] [PATCH v4 00/11] Rework API for RSA algorithm in asymmetric crypto Arek Kusztal
2019-07-17 12:51 ` [dpdk-dev] [PATCH v4 01/11] cryptodev: change RSA API comments about primes Arek Kusztal
2019-07-17 12:51 ` [dpdk-dev] [PATCH v4 02/11] cryptodev: add cipher field to RSA op Arek Kusztal
2019-07-17 12:51 ` [dpdk-dev] [PATCH v4 03/11] crypto/openssl: add cipher field to openssl RSA implementation Arek Kusztal
2019-07-17 12:51 ` [dpdk-dev] [PATCH v4 04/11] test: add cipher field to RSA test Arek Kusztal
2019-07-17 12:51 ` [dpdk-dev] [PATCH v4 05/11] cryptodev: add information about message format when signing with RSA Arek Kusztal
2019-07-17 12:51 ` [dpdk-dev] [PATCH v4 06/11] cryptodev: remove RSA PKCS1 BT0 padding Arek Kusztal
2019-07-17 12:51 ` [dpdk-dev] [PATCH v4 07/11] openssl: remove RSA PKCS1_5 " Arek Kusztal
2019-07-17 12:51 ` [dpdk-dev] [PATCH v4 08/11] test: remove RSA PKCS1_5 BT0 padding from test cases Arek Kusztal
2019-07-17 12:51 ` [dpdk-dev] [PATCH v4 09/11] cryptodev: add RSA padding none description Arek Kusztal
2019-07-17 12:51 ` Arek Kusztal [this message]
2019-07-17 12:51 ` [dpdk-dev] [PATCH v4 11/11] test: add RSA PKCS1_5 padding case when no padding selected Arek Kusztal
2019-07-17 16:00 ` [dpdk-dev] [PATCH v4 00/11] Rework API for RSA algorithm in asymmetric crypto Trahe, Fiona
2019-07-18  8:57 ` Nowak, DamianX
2019-07-18 10:52   ` Shally Verma
2019-07-18 13:09     ` Kusztal, ArkadiuszX
2019-07-18 13:18       ` Shally Verma

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