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File openssl-assembly-pack-accelerate-scalar-multiplication.patch of Package openssl-1_1
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_local.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_local.h =================================================================== --- openssl-1.1.1d.orig/crypto/ec/ec_local.h +++ openssl-1.1.1d/crypto/ec/ec_local.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_local.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"; }
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