Index: openssl/crypto/evp/m_sigver.c |
=================================================================== |
--- openssl/crypto/evp/m_sigver.c (revision 0) |
+++ openssl/crypto/evp/m_sigver.c (revision 0) |
@@ -0,0 +1,200 @@ |
+/* m_sigver.c */ |
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL |
+ * project 2006. |
+ */ |
+/* ==================================================================== |
+ * Copyright (c) 2006,2007 The OpenSSL Project. All rights reserved. |
+ * |
+ * Redistribution and use in source and binary forms, with or without |
+ * modification, are permitted provided that the following conditions |
+ * are met: |
+ * |
+ * 1. Redistributions of source code must retain the above copyright |
+ * notice, this list of conditions and the following disclaimer. |
+ * |
+ * 2. Redistributions in binary form must reproduce the above copyright |
+ * notice, this list of conditions and the following disclaimer in |
+ * the documentation and/or other materials provided with the |
+ * distribution. |
+ * |
+ * 3. All advertising materials mentioning features or use of this |
+ * software must display the following acknowledgment: |
+ * "This product includes software developed by the OpenSSL Project |
+ * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" |
+ * |
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
+ * endorse or promote products derived from this software without |
+ * prior written permission. For written permission, please contact |
+ * licensing@OpenSSL.org. |
+ * |
+ * 5. Products derived from this software may not be called "OpenSSL" |
+ * nor may "OpenSSL" appear in their names without prior written |
+ * permission of the OpenSSL Project. |
+ * |
+ * 6. Redistributions of any form whatsoever must retain the following |
+ * acknowledgment: |
+ * "This product includes software developed by the OpenSSL Project |
+ * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
+ * |
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
+ * OF THE POSSIBILITY OF SUCH DAMAGE. |
+ * ==================================================================== |
+ * |
+ * This product includes cryptographic software written by Eric Young |
+ * (eay@cryptsoft.com). This product includes software written by Tim |
+ * Hudson (tjh@cryptsoft.com). |
+ * |
+ */ |
+ |
+#include <stdio.h> |
+#include "cryptlib.h" |
+#include <openssl/evp.h> |
+#include <openssl/objects.h> |
+#include <openssl/x509.h> |
+#include "evp_locl.h" |
+ |
+static int do_sigver_init(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx, |
+ const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey, |
+ int ver) |
+ { |
+ if (ctx->pctx == NULL) |
+ ctx->pctx = EVP_PKEY_CTX_new(pkey, e); |
+ if (ctx->pctx == NULL) |
+ return 0; |
+ |
+ if (type == NULL) |
+ { |
+ int def_nid; |
+ if (EVP_PKEY_get_default_digest_nid(pkey, &def_nid) > 0) |
+ type = EVP_get_digestbynid(def_nid); |
+ } |
+ |
+ if (type == NULL) |
+ { |
+ EVPerr(EVP_F_DO_SIGVER_INIT, EVP_R_NO_DEFAULT_DIGEST); |
+ return 0; |
+ } |
+ |
+ if (ver) |
+ { |
+ if (ctx->pctx->pmeth->verifyctx_init) |
+ { |
+ if (ctx->pctx->pmeth->verifyctx_init(ctx->pctx, ctx) <=0) |
+ return 0; |
+ ctx->pctx->operation = EVP_PKEY_OP_VERIFYCTX; |
+ } |
+ else if (EVP_PKEY_verify_init(ctx->pctx) <= 0) |
+ return 0; |
+ } |
+ else |
+ { |
+ if (ctx->pctx->pmeth->signctx_init) |
+ { |
+ if (ctx->pctx->pmeth->signctx_init(ctx->pctx, ctx) <= 0) |
+ return 0; |
+ ctx->pctx->operation = EVP_PKEY_OP_SIGNCTX; |
+ } |
+ else if (EVP_PKEY_sign_init(ctx->pctx) <= 0) |
+ return 0; |
+ } |
+ if (EVP_PKEY_CTX_set_signature_md(ctx->pctx, type) <= 0) |
+ return 0; |
+ if (pctx) |
+ *pctx = ctx->pctx; |
+ if (!EVP_DigestInit_ex(ctx, type, e)) |
+ return 0; |
+ return 1; |
+ } |
+ |
+int EVP_DigestSignInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx, |
+ const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey) |
+ { |
+ return do_sigver_init(ctx, pctx, type, e, pkey, 0); |
+ } |
+ |
+int EVP_DigestVerifyInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx, |
+ const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey) |
+ { |
+ return do_sigver_init(ctx, pctx, type, e, pkey, 1); |
+ } |
+ |
+int EVP_DigestSignFinal(EVP_MD_CTX *ctx, unsigned char *sigret, size_t *siglen) |
+ { |
+ int sctx, r = 0; |
+ if (ctx->pctx->pmeth->signctx) |
+ sctx = 1; |
+ else |
+ sctx = 0; |
+ if (sigret) |
+ { |
+ EVP_MD_CTX tmp_ctx; |
+ unsigned char md[EVP_MAX_MD_SIZE]; |
+ unsigned int mdlen; |
+ EVP_MD_CTX_init(&tmp_ctx); |
+ if (!EVP_MD_CTX_copy_ex(&tmp_ctx,ctx)) |
+ return 0; |
+ if (sctx) |
+ r = tmp_ctx.pctx->pmeth->signctx(tmp_ctx.pctx, |
+ sigret, siglen, &tmp_ctx); |
+ else |
+ r = EVP_DigestFinal_ex(&tmp_ctx,md,&mdlen); |
+ EVP_MD_CTX_cleanup(&tmp_ctx); |
+ if (sctx || !r) |
+ return r; |
+ if (EVP_PKEY_sign(ctx->pctx, sigret, siglen, md, mdlen) <= 0) |
+ return 0; |
+ } |
+ else |
+ { |
+ if (sctx) |
+ { |
+ if (ctx->pctx->pmeth->signctx(ctx->pctx, sigret, siglen, ctx) <= 0) |
+ return 0; |
+ } |
+ else |
+ { |
+ int s = EVP_MD_size(ctx->digest); |
+ if (s < 0 || EVP_PKEY_sign(ctx->pctx, sigret, siglen, NULL, s) <= 0) |
+ return 0; |
+ } |
+ } |
+ return 1; |
+ } |
+ |
+int EVP_DigestVerifyFinal(EVP_MD_CTX *ctx, unsigned char *sig, size_t siglen) |
+ { |
+ EVP_MD_CTX tmp_ctx; |
+ unsigned char md[EVP_MAX_MD_SIZE]; |
+ int r; |
+ unsigned int mdlen; |
+ int vctx; |
+ |
+ if (ctx->pctx->pmeth->verifyctx) |
+ vctx = 1; |
+ else |
+ vctx = 0; |
+ EVP_MD_CTX_init(&tmp_ctx); |
+ if (!EVP_MD_CTX_copy_ex(&tmp_ctx,ctx)) |
+ return -1; |
+ if (vctx) |
+ { |
+ r = tmp_ctx.pctx->pmeth->verifyctx(tmp_ctx.pctx, |
+ sig, siglen, &tmp_ctx); |
+ } |
+ else |
+ r = EVP_DigestFinal_ex(&tmp_ctx,md,&mdlen); |
+ EVP_MD_CTX_cleanup(&tmp_ctx); |
+ if (vctx || !r) |
+ return r; |
+ return EVP_PKEY_verify(ctx->pctx, sig, siglen, md, mdlen); |
+ } |