18d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/* 28d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * WPA Supplicant / wrapper functions for libcrypto 38d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Copyright (c) 2004-2009, Jouni Malinen <j@w1.fi> 48d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 5c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt * This software may be distributed under the terms of the BSD license. 6c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt * See README for more details. 78d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 88d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 98d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "includes.h" 108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include <openssl/opensslv.h> 118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include <openssl/err.h> 128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include <openssl/des.h> 138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include <openssl/aes.h> 148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include <openssl/bn.h> 158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include <openssl/evp.h> 168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include <openssl/dh.h> 178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "common.h" 198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "wpabuf.h" 208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "dh_group5.h" 218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "crypto.h" 228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#if OPENSSL_VERSION_NUMBER < 0x00907000 248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define DES_key_schedule des_key_schedule 258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define DES_cblock des_cblock 268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define DES_set_key(key, schedule) des_set_key((key), *(schedule)) 278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define DES_ecb_encrypt(input, output, ks, enc) \ 288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt des_ecb_encrypt((input), (output), *(ks), (enc)) 298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* openssl < 0.9.7 */ 308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic BIGNUM * get_group5_prime(void) 328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#if OPENSSL_VERSION_NUMBER < 0x00908000 348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt static const unsigned char RFC3526_PRIME_1536[] = { 358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xC9,0x0F,0xDA,0xA2, 368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0x21,0x68,0xC2,0x34,0xC4,0xC6,0x62,0x8B,0x80,0xDC,0x1C,0xD1, 378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0x29,0x02,0x4E,0x08,0x8A,0x67,0xCC,0x74,0x02,0x0B,0xBE,0xA6, 388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0x3B,0x13,0x9B,0x22,0x51,0x4A,0x08,0x79,0x8E,0x34,0x04,0xDD, 398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0xEF,0x95,0x19,0xB3,0xCD,0x3A,0x43,0x1B,0x30,0x2B,0x0A,0x6D, 408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0xF2,0x5F,0x14,0x37,0x4F,0xE1,0x35,0x6D,0x6D,0x51,0xC2,0x45, 418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0xE4,0x85,0xB5,0x76,0x62,0x5E,0x7E,0xC6,0xF4,0x4C,0x42,0xE9, 428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0xA6,0x37,0xED,0x6B,0x0B,0xFF,0x5C,0xB6,0xF4,0x06,0xB7,0xED, 438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0xEE,0x38,0x6B,0xFB,0x5A,0x89,0x9F,0xA5,0xAE,0x9F,0x24,0x11, 448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0x7C,0x4B,0x1F,0xE6,0x49,0x28,0x66,0x51,0xEC,0xE4,0x5B,0x3D, 458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0xC2,0x00,0x7C,0xB8,0xA1,0x63,0xBF,0x05,0x98,0xDA,0x48,0x36, 468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0x1C,0x55,0xD3,0x9A,0x69,0x16,0x3F,0xA8,0xFD,0x24,0xCF,0x5F, 478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0x83,0x65,0x5D,0x23,0xDC,0xA3,0xAD,0x96,0x1C,0x62,0xF3,0x56, 488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0x20,0x85,0x52,0xBB,0x9E,0xD5,0x29,0x07,0x70,0x96,0x96,0x6D, 498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0x67,0x0C,0x35,0x4E,0x4A,0xBC,0x98,0x04,0xF1,0x74,0x6C,0x08, 508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0xCA,0x23,0x73,0x27,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt }; 528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return BN_bin2bn(RFC3526_PRIME_1536, sizeof(RFC3526_PRIME_1536), NULL); 538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#else /* openssl < 0.9.8 */ 548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return get_rfc3526_prime_1536(NULL); 558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* openssl < 0.9.8 */ 568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#if OPENSSL_VERSION_NUMBER < 0x00908000 598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifndef OPENSSL_NO_SHA256 608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifndef OPENSSL_FIPS 618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define NO_SHA256_WRAPPER 628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif 638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif 648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* openssl < 0.9.8 */ 668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef OPENSSL_NO_SHA256 688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define NO_SHA256_WRAPPER 698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif 708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int openssl_digest_vector(const EVP_MD *type, int non_fips, 728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t num_elem, const u8 *addr[], 738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const size_t *len, u8 *mac) 748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EVP_MD_CTX ctx; 768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t i; 778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt unsigned int mac_len; 788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EVP_MD_CTX_init(&ctx); 808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_FIPS 818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef OPENSSL_FIPS 828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (non_fips) 838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EVP_MD_CTX_set_flags(&ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW); 848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* OPENSSL_FIPS */ 858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_FIPS */ 868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!EVP_DigestInit_ex(&ctx, type, NULL)) { 878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_ERROR, "OpenSSL: EVP_DigestInit_ex failed: %s", 888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ERR_error_string(ERR_get_error(), NULL)); 898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (i = 0; i < num_elem; i++) { 928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!EVP_DigestUpdate(&ctx, addr[i], len[i])) { 938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_ERROR, "OpenSSL: EVP_DigestUpdate " 948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "failed: %s", 958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ERR_error_string(ERR_get_error(), NULL)); 968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!EVP_DigestFinal(&ctx, mac, &mac_len)) { 1008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_ERROR, "OpenSSL: EVP_DigestFinal failed: %s", 1018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ERR_error_string(ERR_get_error(), NULL)); 1028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 1038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 1068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint md4_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac) 1108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return openssl_digest_vector(EVP_md4(), 0, num_elem, addr, len, mac); 1128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid des_encrypt(const u8 *clear, const u8 *key, u8 *cypher) 1168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 pkey[8], next, tmp; 1188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int i; 1198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt DES_key_schedule ks; 1208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Add parity bits to the key */ 1228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt next = 0; 1238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (i = 0; i < 7; i++) { 1248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tmp = key[i]; 1258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pkey[i] = (tmp >> i) | next | 1; 1268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt next = tmp << (7 - i); 1278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pkey[i] = next | 1; 1298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt DES_set_key(&pkey, &ks); 1318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt DES_ecb_encrypt((DES_cblock *) clear, (DES_cblock *) cypher, &ks, 1328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt DES_ENCRYPT); 1338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint rc4_skip(const u8 *key, size_t keylen, size_t skip, 1378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *data, size_t data_len) 1388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef OPENSSL_NO_RC4 1408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 1418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#else /* OPENSSL_NO_RC4 */ 1428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EVP_CIPHER_CTX ctx; 1438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int outl; 1448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int res = -1; 1458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt unsigned char skip_buf[16]; 1468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EVP_CIPHER_CTX_init(&ctx); 1488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!EVP_CIPHER_CTX_set_padding(&ctx, 0) || 1498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt !EVP_CipherInit_ex(&ctx, EVP_rc4(), NULL, NULL, NULL, 1) || 1508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt !EVP_CIPHER_CTX_set_key_length(&ctx, keylen) || 1518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt !EVP_CipherInit_ex(&ctx, NULL, NULL, key, NULL, 1)) 1528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto out; 1538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (skip >= sizeof(skip_buf)) { 1558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t len = skip; 1568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (len > sizeof(skip_buf)) 1578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = sizeof(skip_buf); 1588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!EVP_CipherUpdate(&ctx, skip_buf, &outl, skip_buf, len)) 1598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto out; 1608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt skip -= len; 1618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (EVP_CipherUpdate(&ctx, data, &outl, data, data_len)) 1648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = 0; 1658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtout: 1678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EVP_CIPHER_CTX_cleanup(&ctx); 1688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return res; 1698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* OPENSSL_NO_RC4 */ 1708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint md5_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac) 1748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return openssl_digest_vector(EVP_md5(), 0, num_elem, addr, len, mac); 1768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_FIPS 1808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint md5_vector_non_fips_allow(size_t num_elem, const u8 *addr[], 1818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const size_t *len, u8 *mac) 1828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return openssl_digest_vector(EVP_md5(), 1, num_elem, addr, len, mac); 1848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_FIPS */ 1868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint sha1_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac) 1898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return openssl_digest_vector(EVP_sha1(), 0, num_elem, addr, len, mac); 1918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifndef NO_SHA256_WRAPPER 1958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint sha256_vector(size_t num_elem, const u8 *addr[], const size_t *len, 1968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *mac) 1978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return openssl_digest_vector(EVP_sha256(), 0, num_elem, addr, len, 1998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt mac); 2008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* NO_SHA256_WRAPPER */ 2028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid * aes_encrypt_init(const u8 *key, size_t len) 2058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt AES_KEY *ak; 2078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ak = os_malloc(sizeof(*ak)); 2088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ak == NULL) 2098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 2108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (AES_set_encrypt_key(key, 8 * len, ak) < 0) { 2118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(ak); 2128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 2138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return ak; 2158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid aes_encrypt(void *ctx, const u8 *plain, u8 *crypt) 2198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt AES_encrypt(plain, crypt, ctx); 2218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid aes_encrypt_deinit(void *ctx) 2258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(ctx); 2278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid * aes_decrypt_init(const u8 *key, size_t len) 2318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt AES_KEY *ak; 2338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ak = os_malloc(sizeof(*ak)); 2348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ak == NULL) 2358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 2368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (AES_set_decrypt_key(key, 8 * len, ak) < 0) { 2378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(ak); 2388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 2398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return ak; 2418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid aes_decrypt(void *ctx, const u8 *crypt, u8 *plain) 2458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt AES_decrypt(crypt, plain, ctx); 2478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid aes_decrypt_deinit(void *ctx) 2518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(ctx); 2538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint crypto_mod_exp(const u8 *base, size_t base_len, 2578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *power, size_t power_len, 2588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *modulus, size_t modulus_len, 2598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *result, size_t *result_len) 2608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt BIGNUM *bn_base, *bn_exp, *bn_modulus, *bn_result; 2628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int ret = -1; 2638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt BN_CTX *ctx; 2648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ctx = BN_CTX_new(); 2668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ctx == NULL) 2678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt bn_base = BN_bin2bn(base, base_len, NULL); 2708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt bn_exp = BN_bin2bn(power, power_len, NULL); 2718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt bn_modulus = BN_bin2bn(modulus, modulus_len, NULL); 2728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt bn_result = BN_new(); 2738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (bn_base == NULL || bn_exp == NULL || bn_modulus == NULL || 2758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt bn_result == NULL) 2768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 2778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (BN_mod_exp(bn_result, bn_base, bn_exp, bn_modulus, ctx) != 1) 2798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto error; 2808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *result_len = BN_bn2bin(bn_result, result); 2828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = 0; 2838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidterror: 2858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt BN_free(bn_base); 2868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt BN_free(bn_exp); 2878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt BN_free(bn_modulus); 2888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt BN_free(bn_result); 2898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt BN_CTX_free(ctx); 2908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return ret; 2918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct crypto_cipher { 2958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EVP_CIPHER_CTX enc; 2968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EVP_CIPHER_CTX dec; 2978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt}; 2988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct crypto_cipher * crypto_cipher_init(enum crypto_cipher_alg alg, 3018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *iv, const u8 *key, 3028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t key_len) 3038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct crypto_cipher *ctx; 3058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const EVP_CIPHER *cipher; 3068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ctx = os_zalloc(sizeof(*ctx)); 3088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ctx == NULL) 3098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 3108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (alg) { 3128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifndef OPENSSL_NO_RC4 3138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case CRYPTO_CIPHER_ALG_RC4: 3148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cipher = EVP_rc4(); 3158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 3168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* OPENSSL_NO_RC4 */ 3178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifndef OPENSSL_NO_AES 3188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case CRYPTO_CIPHER_ALG_AES: 3198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (key_len) { 3208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case 16: 3218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cipher = EVP_aes_128_cbc(); 3228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 3238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case 24: 3248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cipher = EVP_aes_192_cbc(); 3258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 3268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case 32: 3278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cipher = EVP_aes_256_cbc(); 3288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 3298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 3308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(ctx); 3318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 3328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 3348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* OPENSSL_NO_AES */ 3358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifndef OPENSSL_NO_DES 3368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case CRYPTO_CIPHER_ALG_3DES: 3378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cipher = EVP_des_ede3_cbc(); 3388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 3398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case CRYPTO_CIPHER_ALG_DES: 3408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cipher = EVP_des_cbc(); 3418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 3428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* OPENSSL_NO_DES */ 3438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifndef OPENSSL_NO_RC2 3448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case CRYPTO_CIPHER_ALG_RC2: 3458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cipher = EVP_rc2_ecb(); 3468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 3478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* OPENSSL_NO_RC2 */ 3488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 3498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(ctx); 3508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 3518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EVP_CIPHER_CTX_init(&ctx->enc); 3548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EVP_CIPHER_CTX_set_padding(&ctx->enc, 0); 3558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!EVP_EncryptInit_ex(&ctx->enc, cipher, NULL, NULL, NULL) || 3568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt !EVP_CIPHER_CTX_set_key_length(&ctx->enc, key_len) || 3578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt !EVP_EncryptInit_ex(&ctx->enc, NULL, NULL, key, iv)) { 3588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EVP_CIPHER_CTX_cleanup(&ctx->enc); 3598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(ctx); 3608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 3618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EVP_CIPHER_CTX_init(&ctx->dec); 3648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EVP_CIPHER_CTX_set_padding(&ctx->dec, 0); 3658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!EVP_DecryptInit_ex(&ctx->dec, cipher, NULL, NULL, NULL) || 3668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt !EVP_CIPHER_CTX_set_key_length(&ctx->dec, key_len) || 3678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt !EVP_DecryptInit_ex(&ctx->dec, NULL, NULL, key, iv)) { 3688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EVP_CIPHER_CTX_cleanup(&ctx->enc); 3698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EVP_CIPHER_CTX_cleanup(&ctx->dec); 3708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(ctx); 3718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 3728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return ctx; 3758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint crypto_cipher_encrypt(struct crypto_cipher *ctx, const u8 *plain, 3798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *crypt, size_t len) 3808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int outl; 3828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!EVP_EncryptUpdate(&ctx->enc, crypt, &outl, plain, len)) 3838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 3848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 3858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint crypto_cipher_decrypt(struct crypto_cipher *ctx, const u8 *crypt, 3898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *plain, size_t len) 3908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int outl; 3928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt outl = len; 3938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!EVP_DecryptUpdate(&ctx->dec, plain, &outl, crypt, len)) 3948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 3958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 3968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid crypto_cipher_deinit(struct crypto_cipher *ctx) 4008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EVP_CIPHER_CTX_cleanup(&ctx->enc); 4028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EVP_CIPHER_CTX_cleanup(&ctx->dec); 4038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(ctx); 4048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid * dh5_init(struct wpabuf **priv, struct wpabuf **publ) 4088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt DH *dh; 4108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *pubkey = NULL, *privkey = NULL; 4118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t publen, privlen; 4128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *priv = NULL; 4148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *publ = NULL; 4158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dh = DH_new(); 4178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dh == NULL) 4188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 4198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dh->g = BN_new(); 4218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dh->g == NULL || BN_set_word(dh->g, 2) != 1) 4228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto err; 4238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dh->p = get_group5_prime(); 4258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dh->p == NULL) 4268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto err; 4278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (DH_generate_key(dh) != 1) 4298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto err; 4308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt publen = BN_num_bytes(dh->pub_key); 4328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pubkey = wpabuf_alloc(publen); 4338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pubkey == NULL) 4348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto err; 4358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt privlen = BN_num_bytes(dh->priv_key); 4368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt privkey = wpabuf_alloc(privlen); 4378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (privkey == NULL) 4388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto err; 4398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt BN_bn2bin(dh->pub_key, wpabuf_put(pubkey, publen)); 4418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt BN_bn2bin(dh->priv_key, wpabuf_put(privkey, privlen)); 4428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *priv = privkey; 4448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *publ = pubkey; 4458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return dh; 4468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidterr: 4488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(pubkey); 4498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(privkey); 4508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt DH_free(dh); 4518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 4528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct wpabuf * dh5_derive_shared(void *ctx, const struct wpabuf *peer_public, 4568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *own_private) 4578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt BIGNUM *pub_key; 4598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *res = NULL; 4608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t rlen; 4618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt DH *dh = ctx; 4628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int keylen; 4638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ctx == NULL) 4658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 4668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pub_key = BN_bin2bn(wpabuf_head(peer_public), wpabuf_len(peer_public), 4688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt NULL); 4698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pub_key == NULL) 4708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 4718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rlen = DH_size(dh); 4738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = wpabuf_alloc(rlen); 4748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (res == NULL) 4758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto err; 4768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt keylen = DH_compute_key(wpabuf_mhead(res), pub_key, dh); 4788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (keylen < 0) 4798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto err; 4808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put(res, keylen); 4818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt BN_free(pub_key); 4828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return res; 4848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidterr: 4868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt BN_free(pub_key); 4878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(res); 4888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 4898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid dh5_free(void *ctx) 4938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt DH *dh; 4958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ctx == NULL) 4968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 4978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dh = ctx; 4988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt DH_free(dh); 4998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 500