1 /* fips/evp/fips_md.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
58 /* ====================================================================
59 * Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
87 * 6. Redistributions of any form whatsoever must retain the following
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
112 /* Minimal standalone FIPS versions of Digest operations */
114 #define OPENSSL_FIPSAPI
118 #include <openssl/objects.h>
119 #include <openssl/evp.h>
120 #include <openssl/err.h>
121 #include <openssl/fips.h>
123 void FIPS_md_ctx_init(EVP_MD_CTX *ctx)
125 memset(ctx,'\0',sizeof *ctx);
128 EVP_MD_CTX *FIPS_md_ctx_create(void)
130 EVP_MD_CTX *ctx=OPENSSL_malloc(sizeof *ctx);
133 FIPS_md_ctx_init(ctx);
138 int FIPS_digestinit(EVP_MD_CTX *ctx, const EVP_MD *type)
140 M_EVP_MD_CTX_clear_flags(ctx,EVP_MD_CTX_FLAG_CLEANED);
141 if (ctx->digest != type)
143 if (ctx->digest && ctx->digest->ctx_size)
144 OPENSSL_free(ctx->md_data);
146 if (!(ctx->flags & EVP_MD_CTX_FLAG_NO_INIT) && type->ctx_size)
148 ctx->update = type->update;
149 ctx->md_data=OPENSSL_malloc(type->ctx_size);
150 if (ctx->md_data == NULL)
152 EVPerr(EVP_F_FIPS_DIGESTINIT,
153 ERR_R_MALLOC_FAILURE);
158 if (ctx->flags & EVP_MD_CTX_FLAG_NO_INIT)
160 return ctx->digest->init(ctx);
163 int FIPS_digestupdate(EVP_MD_CTX *ctx, const void *data, size_t count)
165 return ctx->update(ctx,data,count);
168 /* The caller can assume that this removes any secret data from the context */
169 int FIPS_digestfinal(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *size)
173 OPENSSL_assert(ctx->digest->md_size <= EVP_MAX_MD_SIZE);
174 ret=ctx->digest->final(ctx,md);
176 *size=ctx->digest->md_size;
177 if (ctx->digest->cleanup)
179 ctx->digest->cleanup(ctx);
180 M_EVP_MD_CTX_set_flags(ctx,EVP_MD_CTX_FLAG_CLEANED);
182 memset(ctx->md_data,0,ctx->digest->ctx_size);
186 int FIPS_digest(const void *data, size_t count,
187 unsigned char *md, unsigned int *size, const EVP_MD *type)
192 FIPS_md_ctx_init(&ctx);
193 M_EVP_MD_CTX_set_flags(&ctx,EVP_MD_CTX_FLAG_ONESHOT);
194 ret=FIPS_digestinit(&ctx, type)
195 && FIPS_digestupdate(&ctx, data, count)
196 && FIPS_digestfinal(&ctx, md, size);
197 FIPS_md_ctx_cleanup(&ctx);
202 void FIPS_md_ctx_destroy(EVP_MD_CTX *ctx)
204 FIPS_md_ctx_cleanup(ctx);
208 /* This call frees resources associated with the context */
209 int FIPS_md_ctx_cleanup(EVP_MD_CTX *ctx)
211 /* Don't assume ctx->md_data was cleaned in FIPS_digest_Final,
212 * because sometimes only copies of the context are ever finalised.
214 if (ctx->digest && ctx->digest->cleanup
215 && !M_EVP_MD_CTX_test_flags(ctx,EVP_MD_CTX_FLAG_CLEANED))
216 ctx->digest->cleanup(ctx);
217 if (ctx->digest && ctx->digest->ctx_size && ctx->md_data
218 && !M_EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_REUSE))
220 OPENSSL_cleanse(ctx->md_data,ctx->digest->ctx_size);
221 OPENSSL_free(ctx->md_data);
223 memset(ctx,'\0',sizeof *ctx);
228 int FIPS_md_ctx_copy(EVP_MD_CTX *out, const EVP_MD_CTX *in)
230 unsigned char *tmp_buf;
231 if ((in == NULL) || (in->digest == NULL))
233 EVPerr(EVP_F_FIPS_MD_CTX_COPY,EVP_R_INPUT_NOT_INITIALIZED);
237 if (out->digest == in->digest)
239 tmp_buf = out->md_data;
240 M_EVP_MD_CTX_set_flags(out,EVP_MD_CTX_FLAG_REUSE);
243 FIPS_md_ctx_cleanup(out);
244 memcpy(out,in,sizeof *out);
246 if (in->md_data && out->digest->ctx_size)
249 out->md_data = tmp_buf;
252 out->md_data=OPENSSL_malloc(out->digest->ctx_size);
255 EVPerr(EVP_F_FIPS_MD_CTX_COPY,ERR_R_MALLOC_FAILURE);
259 memcpy(out->md_data,in->md_data,out->digest->ctx_size);
262 out->update = in->update;
264 if (out->digest->copy)
265 return out->digest->copy(out,in);