diff options
Diffstat (limited to 'src/crypto/evp/p_hmac.c')
-rw-r--r-- | src/crypto/evp/p_hmac.c | 223 |
1 files changed, 0 insertions, 223 deletions
diff --git a/src/crypto/evp/p_hmac.c b/src/crypto/evp/p_hmac.c deleted file mode 100644 index 7d3254a..0000000 --- a/src/crypto/evp/p_hmac.c +++ /dev/null @@ -1,223 +0,0 @@ -/* 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 <openssl/evp.h> - -#include <string.h> - -#include <openssl/asn1.h> -#include <openssl/err.h> -#include <openssl/hmac.h> -#include <openssl/mem.h> -#include <openssl/obj.h> - -#include "internal.h" -#include "../digest/internal.h" - - -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; - } - memset(hctx, 0, sizeof(HMAC_PKEY_CTX)); - hctx->ktmp.type = V_ASN1_OCTET_STRING; - HMAC_CTX_init(&hctx->ctx); - - ctx->data = hctx; - - 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); - if (!HMAC_CTX_copy_ex(&dctx->ctx, &sctx->ctx)) { - return 0; - } - 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; - - if (hctx == NULL) { - return; - } - - 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 void 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); -} - -static int hmac_signctx_init(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx) { - /* |mctx| gets repurposed as a hook to call |HMAC_Update|. Suppress the - * automatic setting of |mctx->update| and the rest of its initialization. */ - 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; - size_t md_size = EVP_MD_CTX_size(mctx); - - if (!sig) { - *siglen = md_size; - return 1; - } else if (*siglen < md_size) { - OPENSSL_PUT_ERROR(EVP, hmac_signctx, EVP_R_BUFFER_TOO_SMALL); - return 0; - } - - if (!HMAC_Final(&hctx->ctx, sig, &hlen)) { - return 0; - } - *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; - if (!HMAC_Init_ex(&hctx->ctx, key->data, key->length, hctx->md, - ctx->engine)) { - return 0; - } - break; - - default: - OPENSSL_PUT_ERROR(EVP, pkey_hmac_ctrl, EVP_R_COMMAND_NOT_SUPPORTED); - return 0; - } - return 1; -} - -const EVP_PKEY_METHOD hmac_pkey_meth = { - EVP_PKEY_HMAC, 0 /* flags */, pkey_hmac_init, - pkey_hmac_copy, pkey_hmac_cleanup, 0 /* paramgen_init */, - 0 /* paramgen */, 0 /* keygen_init */, pkey_hmac_keygen, - 0 /* sign_init */, 0 /* sign */, 0 /* verify_init */, - 0 /* verify */, hmac_signctx_init, hmac_signctx, - 0 /* verifyctx_init */, 0 /* verifyctx */, 0 /* encrypt_init */, - 0 /* encrypt */, 0 /* decrypt_init */, 0 /* decrypt */, - 0 /* derive_init */, 0 /* derive */, pkey_hmac_ctrl, - 0, -}; |