/* * Common Public License Version 0.5 * * THE ACCOMPANYING PROGRAM IS PROVIDED UNDER THE TERMS OF * THIS COMMON PUBLIC LICENSE ("AGREEMENT"). ANY USE, * REPRODUCTION OR DISTRIBUTION OF THE PROGRAM CONSTITUTES * RECIPIENT'S ACCEPTANCE OF THIS AGREEMENT. * * 1. DEFINITIONS * * "Contribution" means: * a) in the case of the initial Contributor, the * initial code and documentation distributed under * this Agreement, and * * b) in the case of each subsequent Contributor: * i) changes to the Program, and * ii) additions to the Program; * * where such changes and/or additions to the Program * originate from and are distributed by that * particular Contributor. A Contribution 'originates' * from a Contributor if it was added to the Program * by such Contributor itself or anyone acting on such * Contributor's behalf. 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However, Recipient's obligations under this * Agreement and any licenses granted by Recipient relating * to the Program shall continue and survive. * * Everyone is permitted to copy and distribute copies of * this Agreement, but in order to avoid inconsistency the * Agreement is copyrighted and may only be modified in the * following manner. The Agreement Steward reserves the right * to publish new versions (including revisions) of this * Agreement from time to time. No one other than the * Agreement Steward has the right to modify this Agreement. * * IBM is the initial Agreement Steward. IBM may assign the * responsibility to serve as the Agreement Steward to a * suitable separate entity. Each new version of the * Agreement will be given a distinguishing version number. * The Program (including Contributions) may always be * distributed subject to the version of the Agreement under * which it was received. In addition, after a new version of * the Agreement is published, Contributor may elect to * distribute the Program (including its Contributions) under * the new version. Except as expressly stated in Sections * 2(a) and 2(b) above, Recipient receives no rights or * licenses to the intellectual property of any Contributor * under this Agreement, whether expressly, by implication, * estoppel or otherwise. All rights in the Program not * expressly granted under this Agreement are reserved. * * * This Agreement is governed by the laws of the State of New * York and the intellectual property laws of the United * States of America. No party to this Agreement will bring a * legal action under this Agreement more than one year after * the cause of action arose. Each party waives its rights to * a jury trial in any resulting litigation. * * * * (C) COPYRIGHT International Business Machines Corp. 2001,2002 */ /* * Copyright 2009 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #include "tpmtok_int.h" CK_RV md5_hash(SESSION *sess, CK_BBOOL length_only, DIGEST_CONTEXT *ctx, CK_BYTE *in_data, CK_ULONG in_data_len, CK_BYTE *out_data, CK_ULONG *out_data_len) { if (! sess || ! ctx || ! out_data_len) { return (CKR_FUNCTION_FAILED); } *out_data_len = MD5_DIGEST_LENGTH; if (length_only == TRUE) { return (CKR_OK); } MD5Update(ctx->context.md5ctx, in_data, in_data_len); MD5Final(out_data, ctx->context.md5ctx); return (CKR_OK); } CK_RV md5_hmac_sign(SESSION * sess, CK_BBOOL length_only, SIGN_VERIFY_CONTEXT * ctx, CK_BYTE * in_data, CK_ULONG in_data_len, CK_BYTE * out_data, CK_ULONG * out_data_len) { OBJECT * key_obj = NULL; CK_ATTRIBUTE * attr = NULL; CK_BYTE hash[MD5_DIGEST_LENGTH]; DIGEST_CONTEXT digest_ctx; CK_MECHANISM digest_mech; CK_BYTE k_ipad[MD5_BLOCK_SIZE]; CK_BYTE k_opad[MD5_BLOCK_SIZE]; CK_ULONG key_bytes, hash_len, hmac_len; CK_ULONG i; CK_RV rc; if (! sess || ! ctx || ! out_data_len) { return (CKR_FUNCTION_FAILED); } if (ctx->mech.mechanism == CKM_MD5_HMAC_GENERAL) { hmac_len = *(CK_ULONG *)ctx->mech.pParameter; if (hmac_len == 0) { *out_data_len = 0; return (CKR_OK); } } else hmac_len = MD5_DIGEST_LENGTH; *out_data_len = hmac_len; if (length_only == TRUE) { return (CKR_OK); } (void) memset(&digest_ctx, 0x0, sizeof (DIGEST_CONTEXT)); rc = object_mgr_find_in_map1(sess->hContext, ctx->key, &key_obj); if (rc != CKR_OK) return (rc); rc = template_attribute_find(key_obj->template, CKA_VALUE, &attr); if (rc == FALSE) { return (CKR_FUNCTION_FAILED); } else key_bytes = attr->ulValueLen; // build (K XOR ipad), (K XOR opad) // if (key_bytes > MD5_BLOCK_SIZE) { digest_mech.mechanism = CKM_MD5; digest_mech.ulParameterLen = 0; digest_mech.pParameter = NULL; rc = digest_mgr_init(sess, &digest_ctx, &digest_mech); if (rc != CKR_OK) { (void) digest_mgr_cleanup(&digest_ctx); return (rc); } hash_len = *out_data_len; rc = digest_mgr_digest(sess, FALSE, &digest_ctx, attr->pValue, attr->ulValueLen, hash, &hash_len); if (rc != CKR_OK) { (void) digest_mgr_cleanup(&digest_ctx); return (rc); } (void) digest_mgr_cleanup(&digest_ctx); (void) memset(&digest_ctx, 0x0, sizeof (DIGEST_CONTEXT)); for (i = 0; i < hash_len; i++) { k_ipad[i] = hash[i] ^ 0x36; k_opad[i] = hash[i] ^ 0x5C; } (void) memset(&k_ipad[i], 0x36, MD5_BLOCK_SIZE - i); (void) memset(&k_opad[i], 0x5C, MD5_BLOCK_SIZE - i); } else { CK_BYTE *key = attr->pValue; for (i = 0; i < key_bytes; i++) { k_ipad[i] = key[i] ^ 0x36; k_opad[i] = key[i] ^ 0x5C; } (void) memset(&k_ipad[i], 0x36, MD5_BLOCK_SIZE - key_bytes); (void) memset(&k_opad[i], 0x5C, MD5_BLOCK_SIZE - key_bytes); } digest_mech.mechanism = CKM_MD5; digest_mech.ulParameterLen = 0; digest_mech.pParameter = NULL; rc = digest_mgr_init(sess, &digest_ctx, &digest_mech); if (rc != CKR_OK) { (void) digest_mgr_cleanup(&digest_ctx); return (rc); } rc = digest_mgr_digest_update(sess, &digest_ctx, k_ipad, MD5_BLOCK_SIZE); if (rc != CKR_OK) { (void) digest_mgr_cleanup(&digest_ctx); return (rc); } rc = digest_mgr_digest_update(sess, &digest_ctx, in_data, in_data_len); if (rc != CKR_OK) { (void) digest_mgr_cleanup(&digest_ctx); return (rc); } hash_len = sizeof (hash); rc = digest_mgr_digest_final(sess, &digest_ctx, hash, &hash_len); if (rc != CKR_OK) { (void) digest_mgr_cleanup(&digest_ctx); return (rc); } (void) digest_mgr_cleanup(&digest_ctx); (void) memset(&digest_ctx, 0x0, sizeof (DIGEST_CONTEXT)); rc = digest_mgr_init(sess, &digest_ctx, &digest_mech); if (rc != CKR_OK) { (void) digest_mgr_cleanup(&digest_ctx); return (rc); } rc = digest_mgr_digest_update(sess, &digest_ctx, k_opad, MD5_BLOCK_SIZE); if (rc != CKR_OK) { (void) digest_mgr_cleanup(&digest_ctx); return (rc); } rc = digest_mgr_digest_update(sess, &digest_ctx, hash, hash_len); if (rc != CKR_OK) { (void) digest_mgr_cleanup(&digest_ctx); return (rc); } hash_len = sizeof (hash); rc = digest_mgr_digest_final(sess, &digest_ctx, hash, &hash_len); if (rc != CKR_OK) { (void) digest_mgr_cleanup(&digest_ctx); return (rc); } (void) memcpy(out_data, hash, hmac_len); *out_data_len = hmac_len; (void) digest_mgr_cleanup(&digest_ctx); return (CKR_OK); } CK_RV md5_hmac_verify(SESSION * sess, SIGN_VERIFY_CONTEXT * ctx, CK_BYTE * in_data, CK_ULONG in_data_len, CK_BYTE * signature, CK_ULONG sig_len) { CK_BYTE hmac[MD5_DIGEST_LENGTH]; SIGN_VERIFY_CONTEXT hmac_ctx; CK_ULONG hmac_len, len; CK_RV rc; if (! sess || ! ctx || ! in_data || ! signature) { return (CKR_FUNCTION_FAILED); } if (ctx->mech.mechanism == CKM_MD5_HMAC_GENERAL) hmac_len = *(CK_ULONG *)ctx->mech.pParameter; else hmac_len = MD5_DIGEST_LENGTH; (void) memset(&hmac_ctx, 0, sizeof (SIGN_VERIFY_CONTEXT)); rc = sign_mgr_init(sess, &hmac_ctx, &ctx->mech, FALSE, ctx->key); if (rc != CKR_OK) { (void) sign_mgr_cleanup(&hmac_ctx); return (rc); } len = sizeof (hmac); rc = sign_mgr_sign(sess, FALSE, &hmac_ctx, in_data, in_data_len, hmac, &len); if (rc != CKR_OK) { (void) sign_mgr_cleanup(&hmac_ctx); return (rc); } if ((len != hmac_len) || (len != sig_len)) { return (CKR_SIGNATURE_LEN_RANGE); } if (memcmp(hmac, signature, hmac_len) != 0) { rc = CKR_SIGNATURE_INVALID; } (void) sign_mgr_cleanup(&hmac_ctx); return (rc); }
