/*
* Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
*
- * Licensed under the OpenSSL license (the "License"). You may not use
+ * Licensed under the Apache License 2.0 (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 <stdarg.h>
+#include <string.h>
#include "internal/cryptlib.h"
-#include <openssl/kdf.h>
#include <openssl/evp.h>
+#include <openssl/kdf.h>
#include "internal/evp_int.h"
+#include "kdf_local.h"
+static void kdf_tls1_prf_reset(EVP_KDF_IMPL *impl);
static int tls1_prf_alg(const EVP_MD *md,
const unsigned char *sec, size_t slen,
const unsigned char *seed, size_t seed_len,
#define TLS1_PRF_MAXBUF 1024
-/* TLS KDF pkey context structure */
+/* TLS KDF kdf context structure */
-typedef struct {
+struct evp_kdf_impl_st {
/* Digest to use for PRF */
const EVP_MD *md;
/* Secret value to use for PRF */
/* Buffer of concatenated seed data */
unsigned char seed[TLS1_PRF_MAXBUF];
size_t seedlen;
-} TLS1_PRF_PKEY_CTX;
+};
-static int pkey_tls1_prf_init(EVP_PKEY_CTX *ctx)
+static EVP_KDF_IMPL *kdf_tls1_prf_new(void)
{
- TLS1_PRF_PKEY_CTX *kctx;
+ EVP_KDF_IMPL *impl;
- if ((kctx = OPENSSL_zalloc(sizeof(*kctx))) == NULL) {
- KDFerr(KDF_F_PKEY_TLS1_PRF_INIT, ERR_R_MALLOC_FAILURE);
- return 0;
- }
- ctx->data = kctx;
+ if ((impl = OPENSSL_zalloc(sizeof(*impl))) == NULL)
+ KDFerr(KDF_F_KDF_TLS1_PRF_NEW, ERR_R_MALLOC_FAILURE);
+ return impl;
+}
- return 1;
+static void kdf_tls1_prf_free(EVP_KDF_IMPL *impl)
+{
+ kdf_tls1_prf_reset(impl);
+ OPENSSL_free(impl);
}
-static void pkey_tls1_prf_cleanup(EVP_PKEY_CTX *ctx)
+static void kdf_tls1_prf_reset(EVP_KDF_IMPL *impl)
{
- TLS1_PRF_PKEY_CTX *kctx = ctx->data;
- OPENSSL_clear_free(kctx->sec, kctx->seclen);
- OPENSSL_cleanse(kctx->seed, kctx->seedlen);
- OPENSSL_free(kctx);
+ OPENSSL_clear_free(impl->sec, impl->seclen);
+ OPENSSL_cleanse(impl->seed, impl->seedlen);
+ memset(impl, 0, sizeof(*impl));
}
-static int pkey_tls1_prf_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
+static int kdf_tls1_prf_ctrl(EVP_KDF_IMPL *impl, int cmd, va_list args)
{
- TLS1_PRF_PKEY_CTX *kctx = ctx->data;
- switch (type) {
- case EVP_PKEY_CTRL_TLS_MD:
- kctx->md = p2;
- return 1;
+ const unsigned char *p;
+ size_t len;
+ const EVP_MD *md;
- case EVP_PKEY_CTRL_TLS_SECRET:
- if (p1 < 0)
+ switch (cmd) {
+ case EVP_KDF_CTRL_SET_MD:
+ md = va_arg(args, const EVP_MD *);
+ if (md == NULL)
return 0;
- if (kctx->sec != NULL)
- OPENSSL_clear_free(kctx->sec, kctx->seclen);
- OPENSSL_cleanse(kctx->seed, kctx->seedlen);
- kctx->seedlen = 0;
- kctx->sec = OPENSSL_memdup(p2, p1);
- if (kctx->sec == NULL)
+
+ impl->md = md;
+ return 1;
+
+ case EVP_KDF_CTRL_SET_TLS_SECRET:
+ p = va_arg(args, const unsigned char *);
+ len = va_arg(args, size_t);
+ OPENSSL_clear_free(impl->sec, impl->seclen);
+ impl->sec = OPENSSL_memdup(p, len);
+ if (impl->sec == NULL)
return 0;
- kctx->seclen = p1;
+
+ impl->seclen = len;
return 1;
- case EVP_PKEY_CTRL_TLS_SEED:
- if (p1 == 0 || p2 == NULL)
+ case EVP_KDF_CTRL_RESET_TLS_SEED:
+ OPENSSL_cleanse(impl->seed, impl->seedlen);
+ impl->seedlen = 0;
+ return 1;
+
+ case EVP_KDF_CTRL_ADD_TLS_SEED:
+ p = va_arg(args, const unsigned char *);
+ len = va_arg(args, size_t);
+ if (len == 0 || p == NULL)
return 1;
- if (p1 < 0 || p1 > (int)(TLS1_PRF_MAXBUF - kctx->seedlen))
+
+ if (len > (TLS1_PRF_MAXBUF - impl->seedlen))
return 0;
- memcpy(kctx->seed + kctx->seedlen, p2, p1);
- kctx->seedlen += p1;
+
+ memcpy(impl->seed + impl->seedlen, p, len);
+ impl->seedlen += len;
return 1;
default:
return -2;
-
}
}
-static int pkey_tls1_prf_ctrl_str(EVP_PKEY_CTX *ctx,
- const char *type, const char *value)
+static int kdf_tls1_prf_ctrl_str(EVP_KDF_IMPL *impl,
+ const char *type, const char *value)
{
if (value == NULL) {
- KDFerr(KDF_F_PKEY_TLS1_PRF_CTRL_STR, KDF_R_VALUE_MISSING);
+ KDFerr(KDF_F_KDF_TLS1_PRF_CTRL_STR, KDF_R_VALUE_MISSING);
return 0;
}
- if (strcmp(type, "md") == 0) {
- TLS1_PRF_PKEY_CTX *kctx = ctx->data;
+ if (strcmp(type, "digest") == 0)
+ return kdf_md2ctrl(impl, kdf_tls1_prf_ctrl, EVP_KDF_CTRL_SET_MD, value);
- const EVP_MD *md = EVP_get_digestbyname(value);
- if (md == NULL) {
- KDFerr(KDF_F_PKEY_TLS1_PRF_CTRL_STR, KDF_R_INVALID_DIGEST);
- return 0;
- }
- kctx->md = md;
- return 1;
- }
if (strcmp(type, "secret") == 0)
- return EVP_PKEY_CTX_str2ctrl(ctx, EVP_PKEY_CTRL_TLS_SECRET, value);
+ return kdf_str2ctrl(impl, kdf_tls1_prf_ctrl,
+ EVP_KDF_CTRL_SET_TLS_SECRET, value);
+
if (strcmp(type, "hexsecret") == 0)
- return EVP_PKEY_CTX_hex2ctrl(ctx, EVP_PKEY_CTRL_TLS_SECRET, value);
+ return kdf_hex2ctrl(impl, kdf_tls1_prf_ctrl,
+ EVP_KDF_CTRL_SET_TLS_SECRET, value);
+
if (strcmp(type, "seed") == 0)
- return EVP_PKEY_CTX_str2ctrl(ctx, EVP_PKEY_CTRL_TLS_SEED, value);
+ return kdf_str2ctrl(impl, kdf_tls1_prf_ctrl, EVP_KDF_CTRL_ADD_TLS_SEED,
+ value);
+
if (strcmp(type, "hexseed") == 0)
- return EVP_PKEY_CTX_hex2ctrl(ctx, EVP_PKEY_CTRL_TLS_SEED, value);
+ return kdf_hex2ctrl(impl, kdf_tls1_prf_ctrl, EVP_KDF_CTRL_ADD_TLS_SEED,
+ value);
- KDFerr(KDF_F_PKEY_TLS1_PRF_CTRL_STR, KDF_R_UNKNOWN_PARAMETER_TYPE);
return -2;
}
-static int pkey_tls1_prf_derive(EVP_PKEY_CTX *ctx, unsigned char *key,
- size_t *keylen)
+static int kdf_tls1_prf_derive(EVP_KDF_IMPL *impl, unsigned char *key,
+ size_t keylen)
{
- TLS1_PRF_PKEY_CTX *kctx = ctx->data;
- if (kctx->md == NULL) {
- KDFerr(KDF_F_PKEY_TLS1_PRF_DERIVE, KDF_R_MISSING_MESSAGE_DIGEST);
+ if (impl->md == NULL) {
+ KDFerr(KDF_F_KDF_TLS1_PRF_DERIVE, KDF_R_MISSING_MESSAGE_DIGEST);
return 0;
}
- if (kctx->sec == NULL) {
- KDFerr(KDF_F_PKEY_TLS1_PRF_DERIVE, KDF_R_MISSING_SECRET);
+ if (impl->sec == NULL) {
+ KDFerr(KDF_F_KDF_TLS1_PRF_DERIVE, KDF_R_MISSING_SECRET);
return 0;
}
- if (kctx->seedlen == 0) {
- KDFerr(KDF_F_PKEY_TLS1_PRF_DERIVE, KDF_R_MISSING_SEED);
+ if (impl->seedlen == 0) {
+ KDFerr(KDF_F_KDF_TLS1_PRF_DERIVE, KDF_R_MISSING_SEED);
return 0;
}
- return tls1_prf_alg(kctx->md, kctx->sec, kctx->seclen,
- kctx->seed, kctx->seedlen,
- key, *keylen);
+ return tls1_prf_alg(impl->md, impl->sec, impl->seclen,
+ impl->seed, impl->seedlen,
+ key, keylen);
}
-const EVP_PKEY_METHOD tls1_prf_pkey_meth = {
- EVP_PKEY_TLS1_PRF,
- 0,
- pkey_tls1_prf_init,
- 0,
- pkey_tls1_prf_cleanup,
-
- 0, 0,
- 0, 0,
-
- 0,
- 0,
-
- 0,
- 0,
-
- 0, 0,
-
- 0, 0, 0, 0,
-
- 0, 0,
-
- 0, 0,
-
- 0,
- pkey_tls1_prf_derive,
- pkey_tls1_prf_ctrl,
- pkey_tls1_prf_ctrl_str
+const EVP_KDF tls1_prf_kdf_meth = {
+ EVP_KDF_TLS1_PRF,
+ kdf_tls1_prf_new,
+ kdf_tls1_prf_free,
+ kdf_tls1_prf_reset,
+ kdf_tls1_prf_ctrl,
+ kdf_tls1_prf_ctrl_str,
+ NULL,
+ kdf_tls1_prf_derive
};
static int tls1_prf_P_hash(const EVP_MD *md,
unsigned char *out, size_t olen)
{
int chunk;
- EVP_MD_CTX *ctx = NULL, *ctx_tmp = NULL, *ctx_init = NULL;
- EVP_PKEY *mac_key = NULL;
+ EVP_MAC_CTX *ctx = NULL, *ctx_tmp = NULL, *ctx_init = NULL;
unsigned char A1[EVP_MAX_MD_SIZE];
size_t A1_len;
int ret = 0;
if (!ossl_assert(chunk > 0))
goto err;
- ctx = EVP_MD_CTX_new();
- ctx_tmp = EVP_MD_CTX_new();
- ctx_init = EVP_MD_CTX_new();
+ ctx = EVP_MAC_CTX_new_id(EVP_MAC_HMAC);
+ ctx_tmp = EVP_MAC_CTX_new_id(EVP_MAC_HMAC);
+ ctx_init = EVP_MAC_CTX_new_id(EVP_MAC_HMAC);
if (ctx == NULL || ctx_tmp == NULL || ctx_init == NULL)
goto err;
- EVP_MD_CTX_set_flags(ctx_init, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
- mac_key = EVP_PKEY_new_raw_private_key(EVP_PKEY_HMAC, NULL, sec, sec_len);
- if (mac_key == NULL)
+ if (EVP_MAC_ctrl(ctx_init, EVP_MAC_CTRL_SET_FLAGS, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW) != 1)
+ goto err;
+ if (EVP_MAC_ctrl(ctx_init, EVP_MAC_CTRL_SET_MD, md) != 1)
goto err;
- if (!EVP_DigestSignInit(ctx_init, NULL, md, NULL, mac_key))
+ if (EVP_MAC_ctrl(ctx_init, EVP_MAC_CTRL_SET_KEY, sec, sec_len) != 1)
goto err;
- if (!EVP_MD_CTX_copy_ex(ctx, ctx_init))
+ if (!EVP_MAC_init(ctx_init))
goto err;
- if (seed != NULL && !EVP_DigestSignUpdate(ctx, seed, seed_len))
+ if (!EVP_MAC_CTX_copy(ctx, ctx_init))
goto err;
- if (!EVP_DigestSignFinal(ctx, A1, &A1_len))
+ if (seed != NULL && !EVP_MAC_update(ctx, seed, seed_len))
+ goto err;
+ if (!EVP_MAC_final(ctx, A1, &A1_len))
goto err;
for (;;) {
/* Reinit mac contexts */
- if (!EVP_MD_CTX_copy_ex(ctx, ctx_init))
+ if (!EVP_MAC_CTX_copy(ctx, ctx_init))
goto err;
- if (!EVP_DigestSignUpdate(ctx, A1, A1_len))
+ if (!EVP_MAC_update(ctx, A1, A1_len))
goto err;
- if (olen > (size_t)chunk && !EVP_MD_CTX_copy_ex(ctx_tmp, ctx))
+ if (olen > (size_t)chunk && !EVP_MAC_CTX_copy(ctx_tmp, ctx))
goto err;
- if (seed && !EVP_DigestSignUpdate(ctx, seed, seed_len))
+ if (seed != NULL && !EVP_MAC_update(ctx, seed, seed_len))
goto err;
if (olen > (size_t)chunk) {
size_t mac_len;
- if (!EVP_DigestSignFinal(ctx, out, &mac_len))
+ if (!EVP_MAC_final(ctx, out, &mac_len))
goto err;
out += mac_len;
olen -= mac_len;
/* calc the next A1 value */
- if (!EVP_DigestSignFinal(ctx_tmp, A1, &A1_len))
+ if (!EVP_MAC_final(ctx_tmp, A1, &A1_len))
goto err;
} else { /* last one */
- if (!EVP_DigestSignFinal(ctx, A1, &A1_len))
+ if (!EVP_MAC_final(ctx, A1, &A1_len))
goto err;
memcpy(out, A1, olen);
break;
}
ret = 1;
err:
- EVP_PKEY_free(mac_key);
- EVP_MD_CTX_free(ctx);
- EVP_MD_CTX_free(ctx_tmp);
- EVP_MD_CTX_free(ctx_init);
+ EVP_MAC_CTX_free(ctx);
+ EVP_MAC_CTX_free(ctx_tmp);
+ EVP_MAC_CTX_free(ctx_init);
OPENSSL_cleanse(A1, sizeof(A1));
return ret;
}
const unsigned char *seed, size_t seed_len,
unsigned char *out, size_t olen)
{
-
if (EVP_MD_type(md) == NID_md5_sha1) {
size_t i;
unsigned char *tmp;
if (!tls1_prf_P_hash(EVP_md5(), sec, slen/2 + (slen & 1),
- seed, seed_len, out, olen))
+ seed, seed_len, out, olen))
return 0;
if ((tmp = OPENSSL_malloc(olen)) == NULL) {
return 0;
}
if (!tls1_prf_P_hash(EVP_sha1(), sec + slen/2, slen/2 + (slen & 1),
- seed, seed_len, tmp, olen)) {
+ seed, seed_len, tmp, olen)) {
OPENSSL_clear_free(tmp, olen);
return 0;
}
projects / openssl.git / blobdiff