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authormarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
committermarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
commit3562e78743202e43aec8727005182a2558117eca (patch)
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Diffstat (limited to 'openssl/fips/hmac/fips_hmac.c')
-rw-r--r--openssl/fips/hmac/fips_hmac.c191
1 files changed, 191 insertions, 0 deletions
diff --git a/openssl/fips/hmac/fips_hmac.c b/openssl/fips/hmac/fips_hmac.c
new file mode 100644
index 000000000..7c49c9882
--- /dev/null
+++ b/openssl/fips/hmac/fips_hmac.c
@@ -0,0 +1,191 @@
+/* crypto/hmac/hmac.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to. The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code. The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * 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 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 acknowledgement:
+ * "This product includes cryptographic software written by
+ * Eric Young (eay@cryptsoft.com)"
+ * The word 'cryptographic' can be left out if the rouines from the library
+ * being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ * the apps directory (application code) you must include an acknowledgement:
+ * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS 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 AUTHOR OR 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.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed. i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <openssl/hmac.h>
+#include <openssl/fips.h>
+
+#ifdef OPENSSL_FIPS
+
+void HMAC_Init_ex(HMAC_CTX *ctx, const void *key, int len,
+ const EVP_MD *md, ENGINE *impl)
+ {
+ int i,j,reset=0;
+ unsigned char pad[HMAC_MAX_MD_CBLOCK];
+
+ if (md != NULL)
+ {
+ reset=1;
+ ctx->md=md;
+ }
+ else
+ md=ctx->md;
+
+ if (key != NULL)
+ {
+ if (FIPS_mode() && !(md->flags & EVP_MD_FLAG_FIPS)
+ && (!(ctx->md_ctx.flags & EVP_MD_CTX_FLAG_NON_FIPS_ALLOW)
+ || !(ctx->i_ctx.flags & EVP_MD_CTX_FLAG_NON_FIPS_ALLOW)
+ || !(ctx->o_ctx.flags & EVP_MD_CTX_FLAG_NON_FIPS_ALLOW)))
+ OpenSSLDie(__FILE__,__LINE__,
+ "HMAC: digest not allowed in FIPS mode");
+
+ reset=1;
+ j=M_EVP_MD_block_size(md);
+ OPENSSL_assert(j <= sizeof ctx->key);
+ if (j < len)
+ {
+ EVP_DigestInit_ex(&ctx->md_ctx,md, impl);
+ EVP_DigestUpdate(&ctx->md_ctx,key,len);
+ EVP_DigestFinal_ex(&(ctx->md_ctx),ctx->key,
+ &ctx->key_length);
+ }
+ else
+ {
+ OPENSSL_assert(len <= sizeof ctx->key);
+ memcpy(ctx->key,key,len);
+ ctx->key_length=len;
+ }
+ if(ctx->key_length != HMAC_MAX_MD_CBLOCK)
+ memset(&ctx->key[ctx->key_length], 0,
+ HMAC_MAX_MD_CBLOCK - ctx->key_length);
+ }
+
+ if (reset)
+ {
+ for (i=0; i<HMAC_MAX_MD_CBLOCK; i++)
+ pad[i]=0x36^ctx->key[i];
+ EVP_DigestInit_ex(&ctx->i_ctx,md, impl);
+ EVP_DigestUpdate(&ctx->i_ctx,pad,M_EVP_MD_block_size(md));
+
+ for (i=0; i<HMAC_MAX_MD_CBLOCK; i++)
+ pad[i]=0x5c^ctx->key[i];
+ EVP_DigestInit_ex(&ctx->o_ctx,md, impl);
+ EVP_DigestUpdate(&ctx->o_ctx,pad,M_EVP_MD_block_size(md));
+ }
+ EVP_MD_CTX_copy_ex(&ctx->md_ctx,&ctx->i_ctx);
+ }
+
+void HMAC_Init(HMAC_CTX *ctx, const void *key, int len,
+ const EVP_MD *md)
+ {
+ if(key && md)
+ HMAC_CTX_init(ctx);
+ HMAC_Init_ex(ctx,key,len,md, NULL);
+ }
+
+void HMAC_Update(HMAC_CTX *ctx, const unsigned char *data, size_t len)
+ {
+ EVP_DigestUpdate(&ctx->md_ctx,data,len);
+ }
+
+void HMAC_Final(HMAC_CTX *ctx, unsigned char *md, unsigned int *len)
+ {
+ int j;
+ unsigned int i;
+ unsigned char buf[EVP_MAX_MD_SIZE];
+
+ j=M_EVP_MD_block_size(ctx->md);
+
+ EVP_DigestFinal_ex(&ctx->md_ctx,buf,&i);
+ EVP_MD_CTX_copy_ex(&ctx->md_ctx,&ctx->o_ctx);
+ EVP_DigestUpdate(&ctx->md_ctx,buf,i);
+ EVP_DigestFinal_ex(&ctx->md_ctx,md,len);
+ }
+
+void HMAC_CTX_init(HMAC_CTX *ctx)
+ {
+ EVP_MD_CTX_init(&ctx->i_ctx);
+ EVP_MD_CTX_init(&ctx->o_ctx);
+ EVP_MD_CTX_init(&ctx->md_ctx);
+ }
+
+void HMAC_CTX_cleanup(HMAC_CTX *ctx)
+ {
+ EVP_MD_CTX_cleanup(&ctx->i_ctx);
+ EVP_MD_CTX_cleanup(&ctx->o_ctx);
+ EVP_MD_CTX_cleanup(&ctx->md_ctx);
+ memset(ctx,0,sizeof *ctx);
+ }
+
+unsigned char *HMAC(const EVP_MD *evp_md, const void *key, int key_len,
+ const unsigned char *d, size_t n, unsigned char *md,
+ unsigned int *md_len)
+ {
+ HMAC_CTX c;
+ static unsigned char m[EVP_MAX_MD_SIZE];
+
+ if (md == NULL) md=m;
+ HMAC_CTX_init(&c);
+ HMAC_Init(&c,key,key_len,evp_md);
+ HMAC_Update(&c,d,n);
+ HMAC_Final(&c,md,md_len);
+ HMAC_CTX_cleanup(&c);
+ return(md);
+ }
+
+void HMAC_CTX_set_flags(HMAC_CTX *ctx, unsigned long flags)
+ {
+ M_EVP_MD_CTX_set_flags(&ctx->i_ctx, flags);
+ M_EVP_MD_CTX_set_flags(&ctx->o_ctx, flags);
+ M_EVP_MD_CTX_set_flags(&ctx->md_ctx, flags);
+ }
+
+#endif
+