diff options
Diffstat (limited to 'thirdparty/openssl/crypto/hmac')
| -rw-r--r-- | thirdparty/openssl/crypto/hmac/hm_ameth.c | 167 | ||||
| -rw-r--r-- | thirdparty/openssl/crypto/hmac/hm_pmeth.c | 262 | ||||
| -rw-r--r-- | thirdparty/openssl/crypto/hmac/hmac.c | 268 |
3 files changed, 697 insertions, 0 deletions
diff --git a/thirdparty/openssl/crypto/hmac/hm_ameth.c b/thirdparty/openssl/crypto/hmac/hm_ameth.c new file mode 100644 index 0000000000..944c6c857b --- /dev/null +++ b/thirdparty/openssl/crypto/hmac/hm_ameth.c @@ -0,0 +1,167 @@ +/* + * 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/evp.h> +#include "asn1_locl.h" + +#define HMAC_TEST_PRIVATE_KEY_FORMAT + +/* + * HMAC "ASN1" method. This is just here to indicate the maximum HMAC output + * length and to free up an HMAC key. + */ + +static int hmac_size(const EVP_PKEY *pkey) +{ + return EVP_MAX_MD_SIZE; +} + +static void hmac_key_free(EVP_PKEY *pkey) +{ + ASN1_OCTET_STRING *os = (ASN1_OCTET_STRING *)pkey->pkey.ptr; + if (os) { + if (os->data) + OPENSSL_cleanse(os->data, os->length); + ASN1_OCTET_STRING_free(os); + } +} + +static int hmac_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2) +{ + switch (op) { + case ASN1_PKEY_CTRL_DEFAULT_MD_NID: + *(int *)arg2 = NID_sha256; + return 1; + + default: + return -2; + } +} + +#ifdef HMAC_TEST_PRIVATE_KEY_FORMAT +/* + * A bogus private key format for test purposes. This is simply the HMAC key + * with "HMAC PRIVATE KEY" in the headers. When enabled the genpkey utility + * can be used to "generate" HMAC keys. + */ + +static int old_hmac_decode(EVP_PKEY *pkey, + const unsigned char **pder, int derlen) +{ + ASN1_OCTET_STRING *os; + os = ASN1_OCTET_STRING_new(); + if (!os || !ASN1_OCTET_STRING_set(os, *pder, derlen)) + goto err; + if (!EVP_PKEY_assign(pkey, EVP_PKEY_HMAC, os)) + goto err; + return 1; + + err: + ASN1_OCTET_STRING_free(os); + return 0; +} + +static int old_hmac_encode(const EVP_PKEY *pkey, unsigned char **pder) +{ + int inc; + ASN1_OCTET_STRING *os = (ASN1_OCTET_STRING *)pkey->pkey.ptr; + if (pder) { + if (!*pder) { + *pder = OPENSSL_malloc(os->length); + inc = 0; + } else + inc = 1; + + memcpy(*pder, os->data, os->length); + + if (inc) + *pder += os->length; + } + + return os->length; +} + +#endif + +const EVP_PKEY_ASN1_METHOD hmac_asn1_meth = { + EVP_PKEY_HMAC, + EVP_PKEY_HMAC, + 0, + + "HMAC", + "OpenSSL HMAC method", + + 0, 0, 0, 0, + + 0, 0, 0, + + hmac_size, + 0, + 0, 0, 0, 0, 0, 0, 0, + + hmac_key_free, + hmac_pkey_ctrl, +#ifdef HMAC_TEST_PRIVATE_KEY_FORMAT + old_hmac_decode, + old_hmac_encode +#else + 0, 0 +#endif +}; diff --git a/thirdparty/openssl/crypto/hmac/hm_pmeth.c b/thirdparty/openssl/crypto/hmac/hm_pmeth.c new file mode 100644 index 0000000000..0ffff79cc4 --- /dev/null +++ b/thirdparty/openssl/crypto/hmac/hm_pmeth.c @@ -0,0 +1,262 @@ +/* + * 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); + if (!HMAC_CTX_copy(&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; + 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; + if (!HMAC_Update(&hctx->ctx, data, count)) + return 0; + 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; + + 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: + 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 +}; diff --git a/thirdparty/openssl/crypto/hmac/hmac.c b/thirdparty/openssl/crypto/hmac/hmac.c new file mode 100644 index 0000000000..51a0a3efcd --- /dev/null +++ b/thirdparty/openssl/crypto/hmac/hmac.c @@ -0,0 +1,268 @@ +/* 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 "cryptlib.h" +#include <openssl/hmac.h> + +#ifdef OPENSSL_FIPS +# include <openssl/fips.h> +#endif + +int 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]; + +#ifdef OPENSSL_FIPS + /* If FIPS mode switch to approved implementation if possible */ + if (FIPS_mode()) { + const EVP_MD *fipsmd; + if (md) { + fipsmd = FIPS_get_digestbynid(EVP_MD_type(md)); + if (fipsmd) + md = fipsmd; + } + } + + if (FIPS_mode()) { + /* If we have an ENGINE need to allow non FIPS */ + if ((impl || ctx->i_ctx.engine) + && !(ctx->i_ctx.flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW)) { + EVPerr(EVP_F_HMAC_INIT_EX, EVP_R_DISABLED_FOR_FIPS); + return 0; + } + /* + * Other algorithm blocking will be done in FIPS_cmac_init, via + * FIPS_hmac_init_ex(). + */ + if (!impl && !ctx->i_ctx.engine) + return FIPS_hmac_init_ex(ctx, key, len, md, NULL); + } +#endif + /* If we are changing MD then we must have a key */ + if (md != NULL && md != ctx->md && (key == NULL || len < 0)) + return 0; + + if (md != NULL) { + reset = 1; + ctx->md = md; + } else if (ctx->md) { + md = ctx->md; + } else { + return 0; + } + + if (key != NULL) { + reset = 1; + j = EVP_MD_block_size(md); + OPENSSL_assert(j <= (int)sizeof(ctx->key)); + if (j < len) { + if (!EVP_DigestInit_ex(&ctx->md_ctx, md, impl)) + goto err; + if (!EVP_DigestUpdate(&ctx->md_ctx, key, len)) + goto err; + if (!EVP_DigestFinal_ex(&(ctx->md_ctx), ctx->key, + &ctx->key_length)) + goto err; + } else { + if (len < 0 || len > (int)sizeof(ctx->key)) + return 0; + 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]; + if (!EVP_DigestInit_ex(&ctx->i_ctx, md, impl)) + goto err; + if (!EVP_DigestUpdate(&ctx->i_ctx, pad, EVP_MD_block_size(md))) + goto err; + + for (i = 0; i < HMAC_MAX_MD_CBLOCK; i++) + pad[i] = 0x5c ^ ctx->key[i]; + if (!EVP_DigestInit_ex(&ctx->o_ctx, md, impl)) + goto err; + if (!EVP_DigestUpdate(&ctx->o_ctx, pad, EVP_MD_block_size(md))) + goto err; + } + if (!EVP_MD_CTX_copy_ex(&ctx->md_ctx, &ctx->i_ctx)) + goto err; + return 1; + err: + return 0; +} + +int HMAC_Init(HMAC_CTX *ctx, const void *key, int len, const EVP_MD *md) +{ + if (key && md) + HMAC_CTX_init(ctx); + return HMAC_Init_ex(ctx, key, len, md, NULL); +} + +int HMAC_Update(HMAC_CTX *ctx, const unsigned char *data, size_t len) +{ +#ifdef OPENSSL_FIPS + if (FIPS_mode() && !ctx->i_ctx.engine) + return FIPS_hmac_update(ctx, data, len); +#endif + if (!ctx->md) + return 0; + + return EVP_DigestUpdate(&ctx->md_ctx, data, len); +} + +int HMAC_Final(HMAC_CTX *ctx, unsigned char *md, unsigned int *len) +{ + unsigned int i; + unsigned char buf[EVP_MAX_MD_SIZE]; +#ifdef OPENSSL_FIPS + if (FIPS_mode() && !ctx->i_ctx.engine) + return FIPS_hmac_final(ctx, md, len); +#endif + + if (!ctx->md) + goto err; + + if (!EVP_DigestFinal_ex(&ctx->md_ctx, buf, &i)) + goto err; + if (!EVP_MD_CTX_copy_ex(&ctx->md_ctx, &ctx->o_ctx)) + goto err; + if (!EVP_DigestUpdate(&ctx->md_ctx, buf, i)) + goto err; + if (!EVP_DigestFinal_ex(&ctx->md_ctx, md, len)) + goto err; + return 1; + err: + return 0; +} + +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); + ctx->md = NULL; +} + +int HMAC_CTX_copy(HMAC_CTX *dctx, HMAC_CTX *sctx) +{ + if (!EVP_MD_CTX_copy(&dctx->i_ctx, &sctx->i_ctx)) + goto err; + if (!EVP_MD_CTX_copy(&dctx->o_ctx, &sctx->o_ctx)) + goto err; + if (!EVP_MD_CTX_copy(&dctx->md_ctx, &sctx->md_ctx)) + goto err; + memcpy(dctx->key, sctx->key, HMAC_MAX_MD_CBLOCK); + dctx->key_length = sctx->key_length; + dctx->md = sctx->md; + return 1; + err: + return 0; +} + +void HMAC_CTX_cleanup(HMAC_CTX *ctx) +{ +#ifdef OPENSSL_FIPS + if (FIPS_mode() && !ctx->i_ctx.engine) { + FIPS_hmac_ctx_cleanup(ctx); + return; + } +#endif + 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); + if (!HMAC_Init(&c, key, key_len, evp_md)) + goto err; + if (!HMAC_Update(&c, d, n)) + goto err; + if (!HMAC_Final(&c, md, md_len)) + goto err; + HMAC_CTX_cleanup(&c); + return md; + err: + HMAC_CTX_cleanup(&c); + return NULL; +} + +void HMAC_CTX_set_flags(HMAC_CTX *ctx, unsigned long flags) +{ + EVP_MD_CTX_set_flags(&ctx->i_ctx, flags); + EVP_MD_CTX_set_flags(&ctx->o_ctx, flags); + EVP_MD_CTX_set_flags(&ctx->md_ctx, flags); +} |