EVP_MAC: Integrate HMAC EVP_PKEY_METHOD into generic MAC EVP_PKEY_METHOD

Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/7483)

2 files changed, 1 insertions, 213 deletions

diff --git a/crypto/hmac/build.info b/crypto/hmac/build.info
index 615f170221..f63524d3be 100644
--- a/crypto/hmac/build.info
+++ b/crypto/hmac/build.info
@@ -1,3 +1,3 @@
 LIBS=../../libcrypto
 SOURCE[../../libcrypto]=\
-        hmac.c hm_ameth.c hm_pmeth.c hm_meth.c
+        hmac.c hm_ameth.c hm_meth.c
diff --git a/crypto/hmac/hm_pmeth.c b/crypto/hmac/hm_pmeth.c
deleted file mode 100644
index 55dd27d63b..0000000000
--- a/crypto/hmac/hm_pmeth.c
+++ /dev/null
@@ -1,212 +0,0 @@
-/*
- * Copyright 2007-2018 The OpenSSL Project Authors. All Rights Reserved.
- *
- * Licensed under the OpenSSL license (the "License").  You may not use
- * this file except in compliance with the License.  You can obtain a copy
- * in the file LICENSE in the source distribution or at
- * https://www.openssl.org/source/license.html
- */
-
-#include <stdio.h>
-#include "internal/cryptlib.h"
-#include <openssl/x509.h>
-#include <openssl/x509v3.h>
-#include <openssl/evp.h>
-#include <openssl/hmac.h>
-#include <openssl/err.h>
-#include "internal/evp_int.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;
-
-    if ((hctx = OPENSSL_zalloc(sizeof(*hctx))) == NULL) {
-        CRYPTOerr(CRYPTO_F_PKEY_HMAC_INIT, ERR_R_MALLOC_FAILURE);
-        return 0;
-    }
-    hctx->ktmp.type = V_ASN1_OCTET_STRING;
-    hctx->ctx = HMAC_CTX_new();
-    if (hctx->ctx == NULL) {
-        OPENSSL_free(hctx);
-        return 0;
-    }
-
-    ctx->data = hctx;
-    ctx->keygen_info_count = 0;
-
-    return 1;
-}
-
-static void pkey_hmac_cleanup(EVP_PKEY_CTX *ctx);
-
-static int pkey_hmac_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)
-{
-    HMAC_PKEY_CTX *sctx, *dctx;
-
-    /* allocate memory for dst->data and a new HMAC_CTX in dst->data->ctx */
-    if (!pkey_hmac_init(dst))
-        return 0;
-    sctx = EVP_PKEY_CTX_get_data(src);
-    dctx = EVP_PKEY_CTX_get_data(dst);
-    dctx->md = sctx->md;
-    if (!HMAC_CTX_copy(dctx->ctx, sctx->ctx))
-        goto err;
-    if (sctx->ktmp.data) {
-        if (!ASN1_OCTET_STRING_set(&dctx->ktmp,
-                                   sctx->ktmp.data, sctx->ktmp.length))
-            goto err;
-    }
-    return 1;
-err:
-    /* release HMAC_CTX in dst->data->ctx and memory allocated for dst->data */
-    pkey_hmac_cleanup (dst);
-    return 0;
-}
-
-static void pkey_hmac_cleanup(EVP_PKEY_CTX *ctx)
-{
-    HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(ctx);
-
-    if (hctx != NULL) {
-        HMAC_CTX_free(hctx->ctx);
-        OPENSSL_clear_free(hctx->ktmp.data, hctx->ktmp.length);
-        OPENSSL_free(hctx);
-        EVP_PKEY_CTX_set_data(ctx, NULL);
-    }
-}
-
-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 = EVP_MD_CTX_pkey_ctx(ctx)->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,
-                       EVP_MD_CTX_test_flags(mctx, ~EVP_MD_CTX_FLAG_NO_INIT));
-    EVP_MD_CTX_set_flags(mctx, EVP_MD_CTX_FLAG_NO_INIT);
-    EVP_MD_CTX_set_update_fn(mctx, 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") == 0)
-        return EVP_PKEY_CTX_str2ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, value);
-    if (strcmp(type, "hexkey") == 0)
-        return EVP_PKEY_CTX_hex2ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, value);
-    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
-};