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@@ -1,3 +1,3 @@
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LIBS=../../libcrypto
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SOURCE[../../libcrypto]=\
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hmac.c hm_ameth.c hm_pmeth.c
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hmac.c hm_ameth.c hm_meth.c
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@@ -0,0 +1,173 @@
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/*
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* Copyright 2018 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <string.h>
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#include <openssl/err.h>
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#include <openssl/ossl_typ.h>
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#include <openssl/asn1.h>
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#include <openssl/hmac.h>
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#include "internal/evp_int.h"
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/* local HMAC context structure */
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/* typedef EVP_MAC_IMPL */
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struct evp_mac_impl_st {
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/* tmpmd and tmpengine are set to NULL after a CMAC_Init call */
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const EVP_MD *tmpmd; /* HMAC digest */
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const ENGINE *tmpengine; /* HMAC digest engine */
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HMAC_CTX *ctx; /* HMAC context */
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};
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static EVP_MAC_IMPL *hmac_new(void)
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{
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EVP_MAC_IMPL *hctx;
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if ((hctx = OPENSSL_zalloc(sizeof(*hctx))) == NULL
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|| (hctx->ctx = HMAC_CTX_new()) == NULL) {
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OPENSSL_free(hctx);
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return NULL;
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}
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return hctx;
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}
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static void hmac_free(EVP_MAC_IMPL *hctx)
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{
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if (hctx != NULL) {
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HMAC_CTX_free(hctx->ctx);
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OPENSSL_free(hctx);
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}
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}
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static int hmac_copy(EVP_MAC_IMPL *hdst, EVP_MAC_IMPL *hsrc)
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{
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if (!HMAC_CTX_copy(hdst->ctx, hsrc->ctx))
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return 0;
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hdst->tmpengine = hsrc->tmpengine;
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hdst->tmpmd = hsrc->tmpmd;
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return 1;
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}
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static size_t hmac_size(EVP_MAC_IMPL *hctx)
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{
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return HMAC_size(hctx->ctx);
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}
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static int hmac_init(EVP_MAC_IMPL *hctx)
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{
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int rv = 1;
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/* HMAC_Init_ex doesn't tolerate all zero params, so we must be careful */
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if (hctx->tmpmd != NULL)
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rv = HMAC_Init_ex(hctx->ctx, NULL, 0, hctx->tmpmd,
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(ENGINE * )hctx->tmpengine);
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hctx->tmpengine = NULL;
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hctx->tmpmd = NULL;
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return rv;
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}
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static int hmac_update(EVP_MAC_IMPL *hctx, const unsigned char *data,
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size_t datalen)
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{
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return HMAC_Update(hctx->ctx, data, datalen);
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}
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static int hmac_final(EVP_MAC_IMPL *hctx, unsigned char *out)
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{
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unsigned int hlen;
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return HMAC_Final(hctx->ctx, out, &hlen);
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}
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static int hmac_ctrl(EVP_MAC_IMPL *hctx, int cmd, va_list args)
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{
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switch (cmd) {
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case EVP_MAC_CTRL_SET_FLAGS:
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{
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unsigned long flags = va_arg(args, unsigned long);
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HMAC_CTX_set_flags(hctx->ctx, flags);
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}
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break;
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case EVP_MAC_CTRL_SET_KEY:
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{
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const unsigned char *key = va_arg(args, const unsigned char *);
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size_t keylen = va_arg(args, size_t);
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int rv = HMAC_Init_ex(hctx->ctx, key, keylen, hctx->tmpmd,
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(ENGINE *)hctx->tmpengine);
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hctx->tmpengine = NULL;
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hctx->tmpmd = NULL;
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return rv;
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}
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break;
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case EVP_MAC_CTRL_SET_MD:
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hctx->tmpmd = va_arg(args, const EVP_MD *);
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break;
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case EVP_MAC_CTRL_SET_ENGINE:
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hctx->tmpengine = va_arg(args, const ENGINE *);
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break;
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default:
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return -2;
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}
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return 1;
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}
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static int hmac_ctrl_int(EVP_MAC_IMPL *hctx, int cmd, ...)
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{
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int rv;
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va_list args;
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va_start(args, cmd);
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rv = hmac_ctrl(hctx, cmd, args);
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va_end(args);
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return rv;
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}
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static int hmac_ctrl_str_cb(void *hctx, int cmd, void *buf, size_t buflen)
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{
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return hmac_ctrl_int(hctx, cmd, buf, buflen);
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}
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static int hmac_ctrl_str(EVP_MAC_IMPL *hctx, const char *type,
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const char *value)
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{
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if (!value)
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return 0;
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if (strcmp(type, "digest") == 0) {
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const EVP_MD *d = EVP_get_digestbyname(value);
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if (d == NULL)
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return 0;
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return hmac_ctrl_int(hctx, EVP_MAC_CTRL_SET_MD, d);
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}
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if (strcmp(type, "key") == 0)
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return EVP_str2ctrl(hmac_ctrl_str_cb, hctx, EVP_MAC_CTRL_SET_KEY,
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value);
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if (strcmp(type, "hexkey") == 0)
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return EVP_hex2ctrl(hmac_ctrl_str_cb, hctx, EVP_MAC_CTRL_SET_KEY,
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value);
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return -2;
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}
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const EVP_MAC hmac_meth = {
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EVP_MAC_HMAC,
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hmac_new,
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hmac_copy,
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hmac_free,
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hmac_size,
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hmac_init,
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hmac_update,
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hmac_final,
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hmac_ctrl,
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hmac_ctrl_str
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};
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@@ -1,212 +0,0 @@
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/*
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* Copyright 2007-2018 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <stdio.h>
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#include "internal/cryptlib.h"
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#include <openssl/x509.h>
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#include <openssl/x509v3.h>
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#include <openssl/evp.h>
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#include <openssl/hmac.h>
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#include <openssl/err.h>
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#include "internal/evp_int.h"
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/* HMAC pkey context structure */
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typedef struct {
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const EVP_MD *md; /* MD for HMAC use */
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ASN1_OCTET_STRING ktmp; /* Temp storage for key */
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HMAC_CTX *ctx;
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} HMAC_PKEY_CTX;
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static int pkey_hmac_init(EVP_PKEY_CTX *ctx)
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{
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HMAC_PKEY_CTX *hctx;
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if ((hctx = OPENSSL_zalloc(sizeof(*hctx))) == NULL) {
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CRYPTOerr(CRYPTO_F_PKEY_HMAC_INIT, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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hctx->ktmp.type = V_ASN1_OCTET_STRING;
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hctx->ctx = HMAC_CTX_new();
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if (hctx->ctx == NULL) {
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OPENSSL_free(hctx);
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return 0;
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}
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ctx->data = hctx;
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ctx->keygen_info_count = 0;
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return 1;
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}
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static void pkey_hmac_cleanup(EVP_PKEY_CTX *ctx);
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static int pkey_hmac_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)
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{
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HMAC_PKEY_CTX *sctx, *dctx;
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/* allocate memory for dst->data and a new HMAC_CTX in dst->data->ctx */
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if (!pkey_hmac_init(dst))
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return 0;
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sctx = EVP_PKEY_CTX_get_data(src);
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dctx = EVP_PKEY_CTX_get_data(dst);
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dctx->md = sctx->md;
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if (!HMAC_CTX_copy(dctx->ctx, sctx->ctx))
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goto err;
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if (sctx->ktmp.data) {
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if (!ASN1_OCTET_STRING_set(&dctx->ktmp,
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sctx->ktmp.data, sctx->ktmp.length))
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goto err;
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}
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return 1;
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err:
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/* release HMAC_CTX in dst->data->ctx and memory allocated for dst->data */
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pkey_hmac_cleanup (dst);
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return 0;
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}
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static void pkey_hmac_cleanup(EVP_PKEY_CTX *ctx)
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{
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HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(ctx);
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if (hctx != NULL) {
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HMAC_CTX_free(hctx->ctx);
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OPENSSL_clear_free(hctx->ktmp.data, hctx->ktmp.length);
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OPENSSL_free(hctx);
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EVP_PKEY_CTX_set_data(ctx, NULL);
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}
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}
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static int pkey_hmac_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
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{
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ASN1_OCTET_STRING *hkey = NULL;
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HMAC_PKEY_CTX *hctx = ctx->data;
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if (!hctx->ktmp.data)
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return 0;
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hkey = ASN1_OCTET_STRING_dup(&hctx->ktmp);
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if (!hkey)
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return 0;
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EVP_PKEY_assign(pkey, EVP_PKEY_HMAC, hkey);
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return 1;
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}
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static int int_update(EVP_MD_CTX *ctx, const void *data, size_t count)
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{
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HMAC_PKEY_CTX *hctx = EVP_MD_CTX_pkey_ctx(ctx)->data;
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if (!HMAC_Update(hctx->ctx, data, count))
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return 0;
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return 1;
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}
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static int hmac_signctx_init(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx)
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{
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HMAC_PKEY_CTX *hctx = ctx->data;
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HMAC_CTX_set_flags(hctx->ctx,
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EVP_MD_CTX_test_flags(mctx, ~EVP_MD_CTX_FLAG_NO_INIT));
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EVP_MD_CTX_set_flags(mctx, EVP_MD_CTX_FLAG_NO_INIT);
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EVP_MD_CTX_set_update_fn(mctx, int_update);
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return 1;
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}
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static int hmac_signctx(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
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EVP_MD_CTX *mctx)
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{
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unsigned int hlen;
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HMAC_PKEY_CTX *hctx = ctx->data;
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int l = EVP_MD_CTX_size(mctx);
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if (l < 0)
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return 0;
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*siglen = l;
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if (!sig)
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return 1;
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if (!HMAC_Final(hctx->ctx, sig, &hlen))
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return 0;
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*siglen = (size_t)hlen;
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return 1;
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}
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static int pkey_hmac_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
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{
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HMAC_PKEY_CTX *hctx = ctx->data;
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ASN1_OCTET_STRING *key;
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switch (type) {
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case EVP_PKEY_CTRL_SET_MAC_KEY:
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if ((!p2 && p1 > 0) || (p1 < -1))
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return 0;
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if (!ASN1_OCTET_STRING_set(&hctx->ktmp, p2, p1))
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return 0;
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break;
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case EVP_PKEY_CTRL_MD:
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hctx->md = p2;
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break;
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case EVP_PKEY_CTRL_DIGESTINIT:
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key = (ASN1_OCTET_STRING *)ctx->pkey->pkey.ptr;
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if (!HMAC_Init_ex(hctx->ctx, key->data, key->length, hctx->md,
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ctx->engine))
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return 0;
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break;
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default:
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return -2;
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}
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return 1;
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}
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static int pkey_hmac_ctrl_str(EVP_PKEY_CTX *ctx,
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const char *type, const char *value)
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{
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if (!value) {
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return 0;
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}
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if (strcmp(type, "key") == 0)
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return EVP_PKEY_CTX_str2ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, value);
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if (strcmp(type, "hexkey") == 0)
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return EVP_PKEY_CTX_hex2ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, value);
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return -2;
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}
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const EVP_PKEY_METHOD hmac_pkey_meth = {
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EVP_PKEY_HMAC,
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0,
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pkey_hmac_init,
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pkey_hmac_copy,
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pkey_hmac_cleanup,
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0, 0,
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0,
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pkey_hmac_keygen,
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0, 0,
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0, 0,
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0, 0,
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hmac_signctx_init,
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hmac_signctx,
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0, 0,
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0, 0,
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0, 0,
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0, 0,
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pkey_hmac_ctrl,
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pkey_hmac_ctrl_str
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};
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