File openssl-assembly-pack-accelerate-scalar-multiplication.patch of Package openssl-1_1.21957
From 1461e66706f24da657d7322706d1165ae515533f Mon Sep 17 00:00:00 2001
From: Patrick Steuer <patrick.steuer@de.ibm.com>
Date: Tue, 9 Jul 2019 10:25:04 +0200
Subject: [PATCH 09204/10000] s390x assembly pack: accelerate scalar
multiplication
for NIST P-256, P-384 and P-521 using PCC instruction.
Signed-off-by: Patrick Steuer <patrick.steuer@de.ibm.com>
Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/9348)
---
crypto/ec/build.info | 3 +-
crypto/ec/ec_curve.c | 42 +++++---
crypto/ec/ec_lcl.h | 5 +
crypto/ec/ecp_s390x_nistp.c | 197 ++++++++++++++++++++++++++++++++++++
4 files changed, 234 insertions(+), 13 deletions(-)
create mode 100644 crypto/ec/ecp_s390x_nistp.c
Index: openssl-1.1.1d/crypto/ec/ec_curve.c
===================================================================
--- openssl-1.1.1d.orig/crypto/ec/ec_curve.c
+++ openssl-1.1.1d/crypto/ec/ec_curve.c
@@ -2829,16 +2829,25 @@ static const ec_list_element curve_list[
{NID_secp256k1, &_EC_SECG_PRIME_256K1.h, 0,
"SECG curve over a 256 bit prime field"},
/* SECG secp256r1 is the same as X9.62 prime256v1 and hence omitted */
- {NID_secp384r1, &_EC_NIST_PRIME_384.h, 0,
+ {NID_secp384r1, &_EC_NIST_PRIME_384.h,
+# if defined(S390X_NISTP_ASM)
+ EC_GFp_s390x_nistp384_method,
+# else
+ 0,
+# endif
"NIST/SECG curve over a 384 bit prime field"},
-#ifndef OPENSSL_NO_EC_NISTP_64_GCC_128
- {NID_secp521r1, &_EC_NIST_PRIME_521.h, EC_GFp_nistp521_method,
- "NIST/SECG curve over a 521 bit prime field"},
+
+ {NID_secp521r1, &_EC_NIST_PRIME_521.h,
+# if defined(S390X_NISTP_ASM)
+ EC_GFp_s390x_nistp521_method,
+# elif !defined(OPENSSL_NO_EC_NISTP_64_GCC_128)
+ EC_GFp_nistp521_method,
#else
- {NID_secp521r1, &_EC_NIST_PRIME_521.h, 0,
- "NIST/SECG curve over a 521 bit prime field"},
+ 0,
#endif
- /* X9.62 curves */
+ "NIST/SECG curve over a 521 bit prime field"},
+
+ /* X9.62 curves */
{NID_X9_62_prime192v1, &_EC_NIST_PRIME_192.h, 0,
"NIST/X9.62/SECG curve over a 192 bit prime field"},
{NID_X9_62_prime192v2, &_EC_X9_62_PRIME_192V2.h, 0,
@@ -2854,6 +2863,8 @@ static const ec_list_element curve_list[
{NID_X9_62_prime256v1, &_EC_X9_62_PRIME_256V1.h,
#if defined(ECP_NISTZ256_ASM)
EC_GFp_nistz256_method,
+# elif defined(S390X_NISTP_ASM)
+ EC_GFp_s390x_nistp256_method,
#elif !defined(OPENSSL_NO_EC_NISTP_64_GCC_128)
EC_GFp_nistp256_method,
#else
Index: openssl-1.1.1d/crypto/ec/ec_lcl.h
===================================================================
--- openssl-1.1.1d.orig/crypto/ec/ec_lcl.h
+++ openssl-1.1.1d/crypto/ec/ec_lcl.h
@@ -587,6 +587,11 @@ int ec_group_simple_order_bits(const EC_
*/
const EC_METHOD *EC_GFp_nistz256_method(void);
#endif
+#ifdef S390X_NISTP_ASM
+const EC_METHOD *EC_GFp_s390x_nistp256_method(void);
+const EC_METHOD *EC_GFp_s390x_nistp384_method(void);
+const EC_METHOD *EC_GFp_s390x_nistp521_method(void);
+#endif
size_t ec_key_simple_priv2oct(const EC_KEY *eckey,
unsigned char *buf, size_t len);
Index: openssl-1.1.1d/crypto/ec/ecp_s390x_nistp.c
===================================================================
--- /dev/null
+++ openssl-1.1.1d/crypto/ec/ecp_s390x_nistp.c
@@ -0,0 +1,197 @@
+/*
+ * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License 2.0 (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <openssl/err.h>
+#include "ec_lcl.h"
+#include "s390x_arch.h"
+
+/* Size of parameter blocks */
+#define S390X_SIZE_PARAM 4096
+
+/* Size of fields in parameter blocks */
+#define S390X_SIZE_P256 32
+#define S390X_SIZE_P384 48
+#define S390X_SIZE_P521 80
+
+/* Offsets of fields in PCC parameter blocks */
+#define S390X_OFF_RES_X(n) (0 * n)
+#define S390X_OFF_RES_Y(n) (1 * n)
+#define S390X_OFF_SRC_X(n) (2 * n)
+#define S390X_OFF_SRC_Y(n) (3 * n)
+#define S390X_OFF_SCALAR(n) (4 * n)
+
+static int ec_GFp_s390x_nistp_mul(const EC_GROUP *group, EC_POINT *r,
+ const BIGNUM *scalar,
+ size_t num, const EC_POINT *points[],
+ const BIGNUM *scalars[],
+ BN_CTX *ctx, unsigned int fc, int len)
+{
+ unsigned char param[S390X_SIZE_PARAM];
+ BIGNUM *x, *y;
+ const EC_POINT *point_ptr = NULL;
+ const BIGNUM *scalar_ptr = NULL;
+ BN_CTX *new_ctx = NULL;
+ int rc = -1;
+
+ if (ctx == NULL) {
+ ctx = new_ctx = BN_CTX_new();
+ if (ctx == NULL)
+ return 0;
+ }
+
+ BN_CTX_start(ctx);
+
+ x = BN_CTX_get(ctx);
+ y = BN_CTX_get(ctx);
+ if (x == NULL || y == NULL) {
+ rc = 0;
+ goto ret;
+ }
+
+ /*
+ * Use PCC for EC keygen and ECDH key derivation:
+ * scalar * generator and scalar * peer public key,
+ * scalar in [0,order).
+ */
+ if ((scalar != NULL && num == 0 && BN_is_negative(scalar) == 0)
+ || (scalar == NULL && num == 1 && BN_is_negative(scalars[0]) == 0)) {
+
+ if (num == 0) {
+ point_ptr = EC_GROUP_get0_generator(group);
+ scalar_ptr = scalar;
+ } else {
+ point_ptr = points[0];
+ scalar_ptr = scalars[0];
+ }
+
+ if (EC_POINT_is_at_infinity(group, point_ptr) == 1
+ || BN_is_zero(scalar_ptr)) {
+ rc = EC_POINT_set_to_infinity(group, r);
+ goto ret;
+ }
+
+ memset(¶m, 0, sizeof(param));
+
+ if (group->meth->point_get_affine_coordinates(group, point_ptr,
+ x, y, ctx) != 1
+ || BN_bn2binpad(x, param + S390X_OFF_SRC_X(len), len) == -1
+ || BN_bn2binpad(y, param + S390X_OFF_SRC_Y(len), len) == -1
+ || BN_bn2binpad(scalar_ptr,
+ param + S390X_OFF_SCALAR(len), len) == -1
+ || s390x_pcc(fc, param) != 0
+ || BN_bin2bn(param + S390X_OFF_RES_X(len), len, x) == NULL
+ || BN_bin2bn(param + S390X_OFF_RES_Y(len), len, y) == NULL
+ || group->meth->point_set_affine_coordinates(group, r,
+ x, y, ctx) != 1)
+ goto ret;
+
+ rc = 1;
+ }
+
+ret:
+ /* Otherwise use default. */
+ if (rc == -1)
+ rc = ec_wNAF_mul(group, r, scalar, num, points, scalars, ctx);
+ OPENSSL_cleanse(param, sizeof(param));
+ BN_CTX_end(ctx);
+ BN_CTX_free(new_ctx);
+ return rc;
+}
+
+#define EC_GFP_S390X_NISTP_METHOD(bits) \
+ \
+static int ec_GFp_s390x_nistp##bits##_mul(const EC_GROUP *group, \
+ EC_POINT *r, \
+ const BIGNUM *scalar, \
+ size_t num, \
+ const EC_POINT *points[], \
+ const BIGNUM *scalars[], \
+ BN_CTX *ctx) \
+{ \
+ return ec_GFp_s390x_nistp_mul(group, r, scalar, num, points, \
+ scalars, ctx, \
+ S390X_SCALAR_MULTIPLY_P##bits, \
+ S390X_SIZE_P##bits); \
+} \
+ \
+const EC_METHOD *EC_GFp_s390x_nistp##bits##_method(void) \
+{ \
+ static const EC_METHOD EC_GFp_s390x_nistp##bits##_meth = { \
+ EC_FLAGS_DEFAULT_OCT, \
+ NID_X9_62_prime_field, \
+ ec_GFp_simple_group_init, \
+ ec_GFp_simple_group_finish, \
+ ec_GFp_simple_group_clear_finish, \
+ ec_GFp_simple_group_copy, \
+ ec_GFp_simple_group_set_curve, \
+ ec_GFp_simple_group_get_curve, \
+ ec_GFp_simple_group_get_degree, \
+ ec_group_simple_order_bits, \
+ ec_GFp_simple_group_check_discriminant, \
+ ec_GFp_simple_point_init, \
+ ec_GFp_simple_point_finish, \
+ ec_GFp_simple_point_clear_finish, \
+ ec_GFp_simple_point_copy, \
+ ec_GFp_simple_point_set_to_infinity, \
+ ec_GFp_simple_set_Jprojective_coordinates_GFp, \
+ ec_GFp_simple_get_Jprojective_coordinates_GFp, \
+ ec_GFp_simple_point_set_affine_coordinates, \
+ ec_GFp_simple_point_get_affine_coordinates, \
+ NULL, /* point_set_compressed_coordinates */ \
+ NULL, /* point2oct */ \
+ NULL, /* oct2point */ \
+ ec_GFp_simple_add, \
+ ec_GFp_simple_dbl, \
+ ec_GFp_simple_invert, \
+ ec_GFp_simple_is_at_infinity, \
+ ec_GFp_simple_is_on_curve, \
+ ec_GFp_simple_cmp, \
+ ec_GFp_simple_make_affine, \
+ ec_GFp_simple_points_make_affine, \
+ ec_GFp_s390x_nistp##bits##_mul, \
+ NULL, /* precompute_mult */ \
+ NULL, /* have_precompute_mult */ \
+ ec_GFp_simple_field_mul, \
+ ec_GFp_simple_field_sqr, \
+ NULL, /* field_div */ \
+ ec_GFp_simple_field_inv, \
+ NULL, /* field_encode */ \
+ NULL, /* field_decode */ \
+ NULL, /* field_set_to_one */ \
+ ec_key_simple_priv2oct, \
+ ec_key_simple_oct2priv, \
+ NULL, /* set_private */ \
+ ec_key_simple_generate_key, \
+ ec_key_simple_check_key, \
+ ec_key_simple_generate_public_key, \
+ NULL, /* keycopy */ \
+ NULL, /* keyfinish */ \
+ ecdh_simple_compute_key, \
+ NULL, /* field_inverse_mod_ord */ \
+ ec_GFp_simple_blind_coordinates, \
+ ec_GFp_simple_ladder_pre, \
+ ec_GFp_simple_ladder_step, \
+ ec_GFp_simple_ladder_post \
+ }; \
+ static const EC_METHOD *ret; \
+ \
+ if (OPENSSL_s390xcap_P.pcc[1] \
+ & S390X_CAPBIT(S390X_SCALAR_MULTIPLY_P##bits)) \
+ ret = &EC_GFp_s390x_nistp##bits##_meth; \
+ else \
+ ret = EC_GFp_mont_method(); \
+ \
+ return ret; \
+}
+
+EC_GFP_S390X_NISTP_METHOD(256)
+EC_GFP_S390X_NISTP_METHOD(384)
+EC_GFP_S390X_NISTP_METHOD(521)
Index: openssl-1.1.1d/Configurations/00-base-templates.conf
===================================================================
--- openssl-1.1.1d.orig/Configurations/00-base-templates.conf
+++ openssl-1.1.1d/Configurations/00-base-templates.conf
@@ -289,6 +289,7 @@ my %targets=(
template => 1,
cpuid_asm_src => "s390xcap.c s390xcpuid.S",
bn_asm_src => "asm/s390x.S s390x-mont.S s390x-gf2m.s",
+ ec_asm_src => "ecp_s390x_nistp.c",
aes_asm_src => "aes-s390x.S aes-ctr.fake aes-xts.fake",
sha1_asm_src => "sha1-s390x.S sha256-s390x.S sha512-s390x.S",
rc4_asm_src => "rc4-s390x.s",
Index: openssl-1.1.1d/Configure
===================================================================
--- openssl-1.1.1d.orig/Configure
+++ openssl-1.1.1d/Configure
@@ -1400,6 +1400,9 @@ unless ($disabled{asm}) {
if ($target{ec_asm_src} =~ /x25519/) {
push @{$config{lib_defines}}, "X25519_ASM";
}
+ if ($target{ec_asm_src} =~ /ecp_s390x_nistp/) {
+ push @{$config{lib_defines}}, "S390X_NISTP_ASM";
+ }
if ($target{padlock_asm_src} ne $table{DEFAULTS}->{padlock_asm_src}) {
push @{$config{dso_defines}}, "PADLOCK_ASM";
}
