| Index: openssl/crypto/hmac/hm_pmeth.c
|
| ===================================================================
|
| --- openssl/crypto/hmac/hm_pmeth.c (revision 0)
|
| +++ openssl/crypto/hmac/hm_pmeth.c (revision 0)
|
| @@ -0,0 +1,267 @@
|
| +/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
|
| + * project 2007.
|
| + */
|
| +/* ====================================================================
|
| + * Copyright (c) 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/x509.h>
|
| +#include <openssl/x509v3.h>
|
| +#include <openssl/evp.h>
|
| +#include <openssl/hmac.h>
|
| +#include "evp_locl.h"
|
| +
|
| +/* HMAC pkey context structure */
|
| +
|
| +typedef struct
|
| + {
|
| + const EVP_MD *md; /* MD for HMAC use */
|
| + ASN1_OCTET_STRING ktmp; /* Temp storage for key */
|
| + HMAC_CTX ctx;
|
| + } HMAC_PKEY_CTX;
|
| +
|
| +static int pkey_hmac_init(EVP_PKEY_CTX *ctx)
|
| + {
|
| + HMAC_PKEY_CTX *hctx;
|
| + hctx = OPENSSL_malloc(sizeof(HMAC_PKEY_CTX));
|
| + if (!hctx)
|
| + return 0;
|
| + hctx->md = NULL;
|
| + hctx->ktmp.data = NULL;
|
| + hctx->ktmp.length = 0;
|
| + hctx->ktmp.flags = 0;
|
| + hctx->ktmp.type = V_ASN1_OCTET_STRING;
|
| + HMAC_CTX_init(&hctx->ctx);
|
| +
|
| + ctx->data = hctx;
|
| + ctx->keygen_info_count = 0;
|
| +
|
| + return 1;
|
| + }
|
| +
|
| +static int pkey_hmac_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)
|
| + {
|
| + HMAC_PKEY_CTX *sctx, *dctx;
|
| + if (!pkey_hmac_init(dst))
|
| + return 0;
|
| + sctx = src->data;
|
| + dctx = dst->data;
|
| + dctx->md = sctx->md;
|
| + HMAC_CTX_init(&dctx->ctx);
|
| + HMAC_CTX_copy(&dctx->ctx, &sctx->ctx);
|
| + if (sctx->ktmp.data)
|
| + {
|
| + if (!ASN1_OCTET_STRING_set(&dctx->ktmp,
|
| + sctx->ktmp.data, sctx->ktmp.length))
|
| + return 0;
|
| + }
|
| + return 1;
|
| + }
|
| +
|
| +static void pkey_hmac_cleanup(EVP_PKEY_CTX *ctx)
|
| + {
|
| + HMAC_PKEY_CTX *hctx = ctx->data;
|
| + HMAC_CTX_cleanup(&hctx->ctx);
|
| + if (hctx->ktmp.data)
|
| + {
|
| + if (hctx->ktmp.length)
|
| + OPENSSL_cleanse(hctx->ktmp.data, hctx->ktmp.length);
|
| + OPENSSL_free(hctx->ktmp.data);
|
| + hctx->ktmp.data = NULL;
|
| + }
|
| + OPENSSL_free(hctx);
|
| + }
|
| +
|
| +static int pkey_hmac_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
|
| + {
|
| + ASN1_OCTET_STRING *hkey = NULL;
|
| + HMAC_PKEY_CTX *hctx = ctx->data;
|
| + if (!hctx->ktmp.data)
|
| + return 0;
|
| + hkey = ASN1_OCTET_STRING_dup(&hctx->ktmp);
|
| + if (!hkey)
|
| + return 0;
|
| + EVP_PKEY_assign(pkey, EVP_PKEY_HMAC, hkey);
|
| +
|
| + return 1;
|
| + }
|
| +
|
| +static int int_update(EVP_MD_CTX *ctx,const void *data,size_t count)
|
| + {
|
| + HMAC_PKEY_CTX *hctx = ctx->pctx->data;
|
| + HMAC_Update(&hctx->ctx, data, count);
|
| + return 1;
|
| + }
|
| +
|
| +static int hmac_signctx_init(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx)
|
| + {
|
| + HMAC_PKEY_CTX *hctx = ctx->data;
|
| + HMAC_CTX_set_flags(&hctx->ctx, mctx->flags & ~EVP_MD_CTX_FLAG_NO_INIT);
|
| + EVP_MD_CTX_set_flags(mctx, EVP_MD_CTX_FLAG_NO_INIT);
|
| + mctx->update = int_update;
|
| + return 1;
|
| + }
|
| +
|
| +static int hmac_signctx(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
|
| + EVP_MD_CTX *mctx)
|
| + {
|
| + unsigned int hlen;
|
| + HMAC_PKEY_CTX *hctx = ctx->data;
|
| + int l = EVP_MD_CTX_size(mctx);
|
| +
|
| + if (l < 0)
|
| + return 0;
|
| + *siglen = l;
|
| + if (!sig)
|
| + return 1;
|
| +
|
| + HMAC_Final(&hctx->ctx, sig, &hlen);
|
| + *siglen = (size_t)hlen;
|
| + return 1;
|
| + }
|
| +
|
| +static int pkey_hmac_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
|
| + {
|
| + HMAC_PKEY_CTX *hctx = ctx->data;
|
| + ASN1_OCTET_STRING *key;
|
| + switch (type)
|
| + {
|
| +
|
| + case EVP_PKEY_CTRL_SET_MAC_KEY:
|
| + if ((!p2 && p1 > 0) || (p1 < -1))
|
| + return 0;
|
| + if (!ASN1_OCTET_STRING_set(&hctx->ktmp, p2, p1))
|
| + return 0;
|
| + break;
|
| +
|
| + case EVP_PKEY_CTRL_MD:
|
| + hctx->md = p2;
|
| + break;
|
| +
|
| + case EVP_PKEY_CTRL_DIGESTINIT:
|
| + key = (ASN1_OCTET_STRING *)ctx->pkey->pkey.ptr;
|
| + HMAC_Init_ex(&hctx->ctx, key->data, key->length, hctx->md,
|
| + ctx->engine);
|
| + break;
|
| +
|
| + default:
|
| + return -2;
|
| +
|
| + }
|
| + return 1;
|
| + }
|
| +
|
| +static int pkey_hmac_ctrl_str(EVP_PKEY_CTX *ctx,
|
| + const char *type, const char *value)
|
| + {
|
| + if (!value)
|
| + {
|
| + return 0;
|
| + }
|
| + if (!strcmp(type, "key"))
|
| + {
|
| + void *p = (void *)value;
|
| + return pkey_hmac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY,
|
| + -1, p);
|
| + }
|
| + if (!strcmp(type, "hexkey"))
|
| + {
|
| + unsigned char *key;
|
| + int r;
|
| + long keylen;
|
| + key = string_to_hex(value, &keylen);
|
| + if (!key)
|
| + return 0;
|
| + r = pkey_hmac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, keylen, key);
|
| + OPENSSL_free(key);
|
| + return r;
|
| + }
|
| + return -2;
|
| + }
|
| +
|
| +const EVP_PKEY_METHOD hmac_pkey_meth =
|
| + {
|
| + EVP_PKEY_HMAC,
|
| + 0,
|
| + pkey_hmac_init,
|
| + pkey_hmac_copy,
|
| + pkey_hmac_cleanup,
|
| +
|
| + 0, 0,
|
| +
|
| + 0,
|
| + pkey_hmac_keygen,
|
| +
|
| + 0, 0,
|
| +
|
| + 0, 0,
|
| +
|
| + 0,0,
|
| +
|
| + hmac_signctx_init,
|
| + hmac_signctx,
|
| +
|
| + 0,0,
|
| +
|
| + 0,0,
|
| +
|
| + 0,0,
|
| +
|
| + 0,0,
|
| +
|
| + pkey_hmac_ctrl,
|
| + pkey_hmac_ctrl_str
|
| +
|
| + };
|
|
|