/**************************************************************************** * apps/testing/crypto/dhm.c * Copyright (C) 2023 Xiaomi Corporation * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. The * ASF licenses this file to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance with the * License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include #include #include #include /**************************************************************************** * Pre-processor Definitions ****************************************************************************/ /* RFC 5114 section 2.1: * 1024-bit MODP Group with 160-bit Prime Order Subgroup */ #define DHM_RFC5114_MODP_1024_P_BIN { \ 0xB1, 0x0B, 0x8F, 0x96, 0xA0, 0x80, 0xE0, 0x1D, \ 0xDE, 0x92, 0xDE, 0x5E, 0xAE, 0x5D, 0x54, 0xEC, \ 0x52, 0xC9, 0x9F, 0xBC, 0xFB, 0x06, 0xA3, 0xC6, \ 0x9A, 0x6A, 0x9D, 0xCA, 0x52, 0xD2, 0x3B, 0x61, \ 0x60, 0x73, 0xE2, 0x86, 0x75, 0xA2, 0x3D, 0x18, \ 0x98, 0x38, 0xEF, 0x1E, 0x2E, 0xE6, 0x52, 0xC0, \ 0x13, 0xEC, 0xB4, 0xAE, 0xA9, 0x06, 0x11, 0x23, \ 0x24, 0x97, 0x5C, 0x3C, 0xD4, 0x9B, 0x83, 0xBF, \ 0xAC, 0xCB, 0xDD, 0x7D, 0x90, 0xC4, 0xBD, 0x70, \ 0x98, 0x48, 0x8E, 0x9C, 0x21, 0x9A, 0x73, 0x72, \ 0x4E, 0xFF, 0xD6, 0xFA, 0xE5, 0x64, 0x47, 0x38, \ 0xFA, 0xA3, 0x1A, 0x4F, 0xF5, 0x5B, 0xCC, 0xC0, \ 0xA1, 0x51, 0xAF, 0x5F, 0x0D, 0xC8, 0xB4, 0xBD, \ 0x45, 0xBF, 0x37, 0xDF, 0x36, 0x5C, 0x1A, 0x65, \ 0xE6, 0x8C, 0xFD, 0xA7, 0x6D, 0x4D, 0xA7, 0x08, \ 0xDF, 0x1F, 0xB2, 0xBC, 0x2E, 0x4A, 0x43, 0x71 } #define DHM_RFC5114_MODP_1024_G_BIN { \ 0xA4, 0xD1, 0xCB, 0xD5, 0xC3, 0xFD, 0x34, 0x12, \ 0x67, 0x65, 0xA4, 0x42, 0xEF, 0xB9, 0x99, 0x05, \ 0xF8, 0x10, 0x4D, 0xD2, 0x58, 0xAC, 0x50, 0x7F, \ 0xD6, 0x40, 0x6C, 0xFF, 0x14, 0x26, 0x6D, 0x31, \ 0x26, 0x6F, 0xEA, 0x1E, 0x5C, 0x41, 0x56, 0x4B, \ 0x77, 0x7E, 0x69, 0x0F, 0x55, 0x04, 0xF2, 0x13, \ 0x16, 0x02, 0x17, 0xB4, 0xB0, 0x1B, 0x88, 0x6A, \ 0x5E, 0x91, 0x54, 0x7F, 0x9E, 0x27, 0x49, 0xF4, \ 0xD7, 0xFB, 0xD7, 0xD3, 0xB9, 0xA9, 0x2E, 0xE1, \ 0x90, 0x9D, 0x0D, 0x22, 0x63, 0xF8, 0x0A, 0x76, \ 0xA6, 0xA2, 0x4C, 0x08, 0x7A, 0x09, 0x1F, 0x53, \ 0x1D, 0xBF, 0x0A, 0x01, 0x69, 0xB6, 0xA2, 0x8A, \ 0xD6, 0x62, 0xA4, 0xD1, 0x8E, 0x73, 0xAF, 0xA3, \ 0x2D, 0x77, 0x9D, 0x59, 0x18, 0xD0, 0x8B, 0xC8, \ 0x85, 0x8F, 0x4D, 0xCE, 0xF9, 0x7C, 0x2A, 0x24, \ 0x85, 0x5E, 0x6E, 0xEB, 0x22, 0xB3, 0xB2, 0xE5 } #define DHM_SIZE 128 /**************************************************************************** * Private Types ****************************************************************************/ typedef struct cryptodev_context { int fd; int cryptodev_fd; } cryptodev_context; /**************************************************************************** * Private Functions ****************************************************************************/ static int match(FAR unsigned char *a, FAR unsigned char *b, size_t len) { int i; if (memcmp(a, b, len) == 0) { return 0; } perror("dhm mismatch"); for (i = 0; i < len; i++) { printf("%02x", a[i]); } printf("\n"); for (i = 0; i < len; i++) { printf("%02x", b[i]); } printf("\n"); return 1; } static void cryptodev_free(FAR cryptodev_context *ctx) { if (ctx->cryptodev_fd != 0) { close(ctx->cryptodev_fd); ctx->cryptodev_fd = 0; } if (ctx->fd != 0) { close(ctx->fd); ctx->fd = 0; } } static int cryptodev_init(FAR cryptodev_context *ctx) { memset(ctx, 0, sizeof(cryptodev_context)); if ((ctx->fd = open("/dev/crypto", O_RDWR, 0)) < 0) { perror("cryptodev_init open /dev/crypto failed"); cryptodev_free(ctx); return 1; } if (ioctl(ctx->fd, CRIOGET, &ctx->cryptodev_fd) == -1) { perror("cryptodev_init CRIOGET failed"); cryptodev_free(ctx); return 1; } return 0; } static int dh_make_public(FAR cryptodev_context *ctx, FAR const unsigned char *p, size_t p_size, FAR const unsigned char *g, size_t g_size, FAR unsigned char *x, size_t x_size, FAR unsigned char *gx, size_t gx_size) { struct crypt_kop cryptk; memset(&cryptk, 0, sizeof(struct crypt_kop)); cryptk.crk_op = CRK_DH_MAKE_PUBLIC; cryptk.crk_iparams = 2; cryptk.crk_oparams = 2; /* inputs: g p * outputs: x gx */ cryptk.crk_param[0].crp_p = (caddr_t) g; cryptk.crk_param[0].crp_nbits = g_size * 8; cryptk.crk_param[1].crp_p = (caddr_t) p; cryptk.crk_param[1].crp_nbits = p_size * 8; cryptk.crk_param[2].crp_p = (caddr_t) x; cryptk.crk_param[2].crp_nbits = x_size * 8; cryptk.crk_param[3].crp_p = (caddr_t) gx; cryptk.crk_param[3].crp_nbits = gx_size * 8; if (ioctl(ctx->cryptodev_fd, CIOCKEY, &cryptk) == -1) { perror("dh_make_public failed"); return 1; } return 0; } static int dh_compute_key(FAR cryptodev_context *ctx, FAR const unsigned char *gy, size_t gy_size, FAR const unsigned char *x, size_t x_size, FAR const unsigned char *p, size_t p_size, FAR unsigned char *k, size_t k_size) { struct crypt_kop cryptk; memset(&cryptk, 0, sizeof(struct crypt_kop)); cryptk.crk_op = CRK_DH_COMPUTE_KEY; cryptk.crk_iparams = 3; cryptk.crk_oparams = 1; /* inputs: pub_key priv_key p */ cryptk.crk_param[0].crp_p = (caddr_t) gy; cryptk.crk_param[0].crp_nbits = gy_size * 8; cryptk.crk_param[1].crp_p = (caddr_t) x; cryptk.crk_param[1].crp_nbits = x_size * 8; cryptk.crk_param[2].crp_p = (caddr_t) p; cryptk.crk_param[2].crp_nbits = p_size * 8; cryptk.crk_param[3].crp_p = (caddr_t) k; cryptk.crk_param[3].crp_nbits = k_size * 8; if (ioctl(ctx->cryptodev_fd, CIOCKEY, &cryptk) == -1) { perror("dh_compute_key failed"); return 1; } return 0; } static int test_dh_compute_key(void) { int ret; cryptodev_context ctx; static const unsigned char dhm_p_1024[] = DHM_RFC5114_MODP_1024_P_BIN; static const unsigned char dhm_g_1024[] = DHM_RFC5114_MODP_1024_G_BIN; unsigned char x1[DHM_SIZE]; unsigned char gx1[DHM_SIZE]; unsigned char k1[DHM_SIZE]; unsigned char x2[DHM_SIZE]; unsigned char gx2[DHM_SIZE]; unsigned char k2[DHM_SIZE]; ret = cryptodev_init(&ctx); if (ret != 0) { goto free; } /* X-private key GX-pulic key K-share key */ memset(x1, 0, DHM_SIZE); memset(gx1, 0, DHM_SIZE); memset(k1, 0, DHM_SIZE); memset(x2, 0, DHM_SIZE); memset(gx2, 0, DHM_SIZE); memset(k2, 0, DHM_SIZE); ret = dh_make_public(&ctx, dhm_p_1024, DHM_SIZE, dhm_g_1024, DHM_SIZE, x1, DHM_SIZE, gx1, DHM_SIZE); if (ret != 0) { printf("DH make Alice's public key failed\n"); goto free; } ret = dh_make_public(&ctx, dhm_p_1024, DHM_SIZE, dhm_g_1024, DHM_SIZE, x2, DHM_SIZE, gx2, DHM_SIZE); if (ret != 0) { printf("DH make Bob's public failed\n"); goto free; } ret = dh_compute_key(&ctx, gx2, DHM_SIZE, x1, DHM_SIZE, dhm_p_1024, DHM_SIZE, k1, DHM_SIZE); if (ret != 0) { printf("DH compute Alice's share key failed\n"); goto free; } ret = dh_compute_key(&ctx, gx1, DHM_SIZE, x2, DHM_SIZE, dhm_p_1024, DHM_SIZE, k2, DHM_SIZE); if (ret != 0) { printf("DH compute Bob's share key failed\n"); goto free; } ret = match(k1, k2, DHM_SIZE); if (ret != 0) { printf("mismatch share key\n"); } free: cryptodev_free(&ctx); return 0; } /**************************************************************************** * Public Functions ****************************************************************************/ int main(void) { if (test_dh_compute_key() != 0) { printf("test dh compute key failed\n"); } else { printf("test dh compute key ok\n"); } return 0; }