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Diffstat (limited to 'thirdparty/openssl/crypto/dh/dh_kdf.c')
-rw-r--r--thirdparty/openssl/crypto/dh/dh_kdf.c187
1 files changed, 0 insertions, 187 deletions
diff --git a/thirdparty/openssl/crypto/dh/dh_kdf.c b/thirdparty/openssl/crypto/dh/dh_kdf.c
deleted file mode 100644
index a882cb286e..0000000000
--- a/thirdparty/openssl/crypto/dh/dh_kdf.c
+++ /dev/null
@@ -1,187 +0,0 @@
-/* crypto/dh/dh_kdf.c */
-/*
- * Written by Stephen Henson for the OpenSSL project.
- */
-/* ====================================================================
- * Copyright (c) 2013 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
- * openssl-core@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.
- * ====================================================================
- */
-
-#include <string.h>
-#include <openssl/dh.h>
-#include <openssl/evp.h>
-#include <openssl/asn1.h>
-#include <openssl/cms.h>
-
-/* Key derivation from X9.42/RFC2631 */
-
-#define DH_KDF_MAX (1L << 30)
-
-/* Skip past an ASN1 structure: for OBJECT skip content octets too */
-
-static int skip_asn1(unsigned char **pp, long *plen, int exptag)
-{
- const unsigned char *q = *pp;
- int i, tag, xclass;
- long tmplen;
- i = ASN1_get_object(&q, &tmplen, &tag, &xclass, *plen);
- if (i & 0x80)
- return 0;
- if (tag != exptag || xclass != V_ASN1_UNIVERSAL)
- return 0;
- if (tag == V_ASN1_OBJECT)
- q += tmplen;
- *plen -= q - *pp;
- *pp = (unsigned char *)q;
- return 1;
-}
-
-/*
- * Encode the DH shared info structure, return an offset to the counter value
- * so we can update the structure without reencoding it.
- */
-
-static int dh_sharedinfo_encode(unsigned char **pder, unsigned char **pctr,
- ASN1_OBJECT *key_oid, size_t outlen,
- const unsigned char *ukm, size_t ukmlen)
-{
- unsigned char *p;
- int derlen;
- long tlen;
- /* "magic" value to check offset is sane */
- static unsigned char ctr[4] = { 0xF3, 0x17, 0x22, 0x53 };
- X509_ALGOR atmp;
- ASN1_OCTET_STRING ctr_oct, ukm_oct, *pukm_oct;
- ASN1_TYPE ctr_atype;
- if (ukmlen > DH_KDF_MAX || outlen > DH_KDF_MAX)
- return 0;
- ctr_oct.data = ctr;
- ctr_oct.length = 4;
- ctr_oct.flags = 0;
- ctr_oct.type = V_ASN1_OCTET_STRING;
- ctr_atype.type = V_ASN1_OCTET_STRING;
- ctr_atype.value.octet_string = &ctr_oct;
- atmp.algorithm = key_oid;
- atmp.parameter = &ctr_atype;
- if (ukm) {
- ukm_oct.type = V_ASN1_OCTET_STRING;
- ukm_oct.flags = 0;
- ukm_oct.data = (unsigned char *)ukm;
- ukm_oct.length = ukmlen;
- pukm_oct = &ukm_oct;
- } else
- pukm_oct = NULL;
- derlen = CMS_SharedInfo_encode(pder, &atmp, pukm_oct, outlen);
- if (derlen <= 0)
- return 0;
- p = *pder;
- tlen = derlen;
- if (!skip_asn1(&p, &tlen, V_ASN1_SEQUENCE))
- return 0;
- if (!skip_asn1(&p, &tlen, V_ASN1_SEQUENCE))
- return 0;
- if (!skip_asn1(&p, &tlen, V_ASN1_OBJECT))
- return 0;
- if (!skip_asn1(&p, &tlen, V_ASN1_OCTET_STRING))
- return 0;
- if (CRYPTO_memcmp(p, ctr, 4))
- return 0;
- *pctr = p;
- return derlen;
-}
-
-int DH_KDF_X9_42(unsigned char *out, size_t outlen,
- const unsigned char *Z, size_t Zlen,
- ASN1_OBJECT *key_oid,
- const unsigned char *ukm, size_t ukmlen, const EVP_MD *md)
-{
- EVP_MD_CTX mctx;
- int rv = 0;
- unsigned int i;
- size_t mdlen;
- unsigned char *der = NULL, *ctr;
- int derlen;
- if (Zlen > DH_KDF_MAX)
- return 0;
- mdlen = EVP_MD_size(md);
- EVP_MD_CTX_init(&mctx);
- derlen = dh_sharedinfo_encode(&der, &ctr, key_oid, outlen, ukm, ukmlen);
- if (derlen == 0)
- goto err;
- for (i = 1;; i++) {
- unsigned char mtmp[EVP_MAX_MD_SIZE];
- EVP_DigestInit_ex(&mctx, md, NULL);
- if (!EVP_DigestUpdate(&mctx, Z, Zlen))
- goto err;
- ctr[3] = i & 0xFF;
- ctr[2] = (i >> 8) & 0xFF;
- ctr[1] = (i >> 16) & 0xFF;
- ctr[0] = (i >> 24) & 0xFF;
- if (!EVP_DigestUpdate(&mctx, der, derlen))
- goto err;
- if (outlen >= mdlen) {
- if (!EVP_DigestFinal(&mctx, out, NULL))
- goto err;
- outlen -= mdlen;
- if (outlen == 0)
- break;
- out += mdlen;
- } else {
- if (!EVP_DigestFinal(&mctx, mtmp, NULL))
- goto err;
- memcpy(out, mtmp, outlen);
- OPENSSL_cleanse(mtmp, mdlen);
- break;
- }
- }
- rv = 1;
- err:
- if (der)
- OPENSSL_free(der);
- EVP_MD_CTX_cleanup(&mctx);
- return rv;
-}
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