Openssl 1.1.0h
This commit is contained in:
Hakase
@@ -0,0 +1,3 @@
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LIBS=../../libcrypto
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SOURCE[../../libcrypto]=\
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tls1_prf.c kdf_err.c hkdf.c
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@@ -0,0 +1,293 @@
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/*
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* Copyright 2016 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 <stdlib.h>
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#include <string.h>
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#include <openssl/hmac.h>
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#include <openssl/kdf.h>
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#include <openssl/evp.h>
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#include "internal/cryptlib.h"
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#include "internal/evp_int.h"
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#define HKDF_MAXBUF 1024
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static unsigned char *HKDF(const EVP_MD *evp_md,
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const unsigned char *salt, size_t salt_len,
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const unsigned char *key, size_t key_len,
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const unsigned char *info, size_t info_len,
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unsigned char *okm, size_t okm_len);
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static unsigned char *HKDF_Extract(const EVP_MD *evp_md,
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const unsigned char *salt, size_t salt_len,
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const unsigned char *key, size_t key_len,
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unsigned char *prk, size_t *prk_len);
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static unsigned char *HKDF_Expand(const EVP_MD *evp_md,
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const unsigned char *prk, size_t prk_len,
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const unsigned char *info, size_t info_len,
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unsigned char *okm, size_t okm_len);
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typedef struct {
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const EVP_MD *md;
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unsigned char *salt;
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size_t salt_len;
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unsigned char *key;
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size_t key_len;
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unsigned char info[HKDF_MAXBUF];
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size_t info_len;
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} HKDF_PKEY_CTX;
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static int pkey_hkdf_init(EVP_PKEY_CTX *ctx)
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{
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HKDF_PKEY_CTX *kctx;
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kctx = OPENSSL_zalloc(sizeof(*kctx));
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if (kctx == NULL)
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return 0;
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ctx->data = kctx;
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return 1;
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}
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static void pkey_hkdf_cleanup(EVP_PKEY_CTX *ctx)
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{
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HKDF_PKEY_CTX *kctx = ctx->data;
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OPENSSL_clear_free(kctx->salt, kctx->salt_len);
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OPENSSL_clear_free(kctx->key, kctx->key_len);
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OPENSSL_cleanse(kctx->info, kctx->info_len);
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OPENSSL_free(kctx);
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}
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static int pkey_hkdf_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
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{
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HKDF_PKEY_CTX *kctx = ctx->data;
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switch (type) {
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case EVP_PKEY_CTRL_HKDF_MD:
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if (p2 == NULL)
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return 0;
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kctx->md = p2;
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return 1;
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case EVP_PKEY_CTRL_HKDF_SALT:
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if (p1 == 0 || p2 == NULL)
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return 1;
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if (p1 < 0)
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return 0;
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if (kctx->salt != NULL)
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OPENSSL_clear_free(kctx->salt, kctx->salt_len);
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kctx->salt = OPENSSL_memdup(p2, p1);
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if (kctx->salt == NULL)
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return 0;
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kctx->salt_len = p1;
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return 1;
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case EVP_PKEY_CTRL_HKDF_KEY:
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if (p1 < 0)
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return 0;
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if (kctx->key != NULL)
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OPENSSL_clear_free(kctx->key, kctx->key_len);
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kctx->key = OPENSSL_memdup(p2, p1);
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if (kctx->key == NULL)
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return 0;
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kctx->key_len = p1;
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return 1;
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case EVP_PKEY_CTRL_HKDF_INFO:
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if (p1 == 0 || p2 == NULL)
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return 1;
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if (p1 < 0 || p1 > (int)(HKDF_MAXBUF - kctx->info_len))
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return 0;
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memcpy(kctx->info + kctx->info_len, p2, p1);
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kctx->info_len += p1;
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return 1;
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default:
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return -2;
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}
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}
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static int pkey_hkdf_ctrl_str(EVP_PKEY_CTX *ctx, const char *type,
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const char *value)
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{
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if (strcmp(type, "md") == 0)
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return EVP_PKEY_CTX_set_hkdf_md(ctx, EVP_get_digestbyname(value));
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if (strcmp(type, "salt") == 0)
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return EVP_PKEY_CTX_str2ctrl(ctx, EVP_PKEY_CTRL_HKDF_SALT, value);
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if (strcmp(type, "hexsalt") == 0)
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return EVP_PKEY_CTX_hex2ctrl(ctx, EVP_PKEY_CTRL_HKDF_SALT, value);
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if (strcmp(type, "key") == 0)
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return EVP_PKEY_CTX_str2ctrl(ctx, EVP_PKEY_CTRL_HKDF_KEY, value);
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if (strcmp(type, "hexkey") == 0)
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return EVP_PKEY_CTX_hex2ctrl(ctx, EVP_PKEY_CTRL_HKDF_KEY, value);
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if (strcmp(type, "info") == 0)
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return EVP_PKEY_CTX_str2ctrl(ctx, EVP_PKEY_CTRL_HKDF_INFO, value);
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if (strcmp(type, "hexinfo") == 0)
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return EVP_PKEY_CTX_hex2ctrl(ctx, EVP_PKEY_CTRL_HKDF_INFO, value);
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return -2;
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}
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static int pkey_hkdf_derive(EVP_PKEY_CTX *ctx, unsigned char *key,
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size_t *keylen)
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{
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HKDF_PKEY_CTX *kctx = ctx->data;
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if (kctx->md == NULL || kctx->key == NULL)
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return 0;
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if (HKDF(kctx->md, kctx->salt, kctx->salt_len, kctx->key, kctx->key_len,
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kctx->info, kctx->info_len, key, *keylen) == NULL)
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{
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return 0;
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}
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return 1;
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}
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const EVP_PKEY_METHOD hkdf_pkey_meth = {
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EVP_PKEY_HKDF,
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0,
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pkey_hkdf_init,
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0,
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pkey_hkdf_cleanup,
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0, 0,
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0, 0,
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0,
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0,
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0,
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0,
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0, 0,
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0, 0, 0, 0,
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0, 0,
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0, 0,
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0,
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pkey_hkdf_derive,
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pkey_hkdf_ctrl,
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pkey_hkdf_ctrl_str
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};
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static unsigned char *HKDF(const EVP_MD *evp_md,
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const unsigned char *salt, size_t salt_len,
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const unsigned char *key, size_t key_len,
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const unsigned char *info, size_t info_len,
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unsigned char *okm, size_t okm_len)
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{
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unsigned char prk[EVP_MAX_MD_SIZE];
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size_t prk_len;
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if (!HKDF_Extract(evp_md, salt, salt_len, key, key_len, prk, &prk_len))
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return NULL;
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return HKDF_Expand(evp_md, prk, prk_len, info, info_len, okm, okm_len);
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}
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static unsigned char *HKDF_Extract(const EVP_MD *evp_md,
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const unsigned char *salt, size_t salt_len,
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const unsigned char *key, size_t key_len,
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unsigned char *prk, size_t *prk_len)
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{
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unsigned int tmp_len;
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if (!HMAC(evp_md, salt, salt_len, key, key_len, prk, &tmp_len))
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return NULL;
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*prk_len = tmp_len;
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return prk;
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}
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static unsigned char *HKDF_Expand(const EVP_MD *evp_md,
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const unsigned char *prk, size_t prk_len,
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const unsigned char *info, size_t info_len,
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unsigned char *okm, size_t okm_len)
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{
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HMAC_CTX *hmac;
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unsigned int i;
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unsigned char prev[EVP_MAX_MD_SIZE];
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size_t done_len = 0, dig_len = EVP_MD_size(evp_md);
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size_t n = okm_len / dig_len;
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if (okm_len % dig_len)
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n++;
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if (n > 255)
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return NULL;
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if ((hmac = HMAC_CTX_new()) == NULL)
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return NULL;
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if (!HMAC_Init_ex(hmac, prk, prk_len, evp_md, NULL))
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goto err;
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for (i = 1; i <= n; i++) {
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size_t copy_len;
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const unsigned char ctr = i;
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if (i > 1) {
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if (!HMAC_Init_ex(hmac, NULL, 0, NULL, NULL))
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goto err;
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if (!HMAC_Update(hmac, prev, dig_len))
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goto err;
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}
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if (!HMAC_Update(hmac, info, info_len))
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goto err;
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if (!HMAC_Update(hmac, &ctr, 1))
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goto err;
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if (!HMAC_Final(hmac, prev, NULL))
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goto err;
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copy_len = (done_len + dig_len > okm_len) ?
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okm_len - done_len :
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dig_len;
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memcpy(okm + done_len, prev, copy_len);
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done_len += copy_len;
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}
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HMAC_CTX_free(hmac);
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return okm;
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err:
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HMAC_CTX_free(hmac);
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return NULL;
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}
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@@ -0,0 +1,46 @@
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/*
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* Generated by util/mkerr.pl DO NOT EDIT
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* Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
|
||||
*
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* 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
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*/
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#include <stdio.h>
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#include <openssl/err.h>
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#include <openssl/kdf.h>
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/* BEGIN ERROR CODES */
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#ifndef OPENSSL_NO_ERR
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# define ERR_FUNC(func) ERR_PACK(ERR_LIB_KDF,func,0)
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# define ERR_REASON(reason) ERR_PACK(ERR_LIB_KDF,0,reason)
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static ERR_STRING_DATA KDF_str_functs[] = {
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{ERR_FUNC(KDF_F_PKEY_TLS1_PRF_CTRL_STR), "pkey_tls1_prf_ctrl_str"},
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{ERR_FUNC(KDF_F_PKEY_TLS1_PRF_DERIVE), "pkey_tls1_prf_derive"},
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{0, NULL}
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};
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static ERR_STRING_DATA KDF_str_reasons[] = {
|
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{ERR_REASON(KDF_R_INVALID_DIGEST), "invalid digest"},
|
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{ERR_REASON(KDF_R_MISSING_PARAMETER), "missing parameter"},
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{ERR_REASON(KDF_R_VALUE_MISSING), "value missing"},
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{0, NULL}
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};
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#endif
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int ERR_load_KDF_strings(void)
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{
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#ifndef OPENSSL_NO_ERR
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|
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if (ERR_func_error_string(KDF_str_functs[0].error) == NULL) {
|
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ERR_load_strings(0, KDF_str_functs);
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ERR_load_strings(0, KDF_str_reasons);
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}
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#endif
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return 1;
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||||
}
|
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@@ -0,0 +1,265 @@
|
||||
/*
|
||||
* Copyright 2016 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>
|
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#include "internal/cryptlib.h"
|
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#include <openssl/kdf.h>
|
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#include <openssl/evp.h>
|
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#include "internal/evp_int.h"
|
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|
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static int tls1_prf_alg(const EVP_MD *md,
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const unsigned char *sec, size_t slen,
|
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const unsigned char *seed, size_t seed_len,
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unsigned char *out, size_t olen);
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|
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#define TLS1_PRF_MAXBUF 1024
|
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|
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/* TLS KDF pkey context structure */
|
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|
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typedef struct {
|
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/* Digest to use for PRF */
|
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const EVP_MD *md;
|
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/* Secret value to use for PRF */
|
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unsigned char *sec;
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size_t seclen;
|
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/* Buffer of concatenated seed data */
|
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unsigned char seed[TLS1_PRF_MAXBUF];
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size_t seedlen;
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} TLS1_PRF_PKEY_CTX;
|
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|
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static int pkey_tls1_prf_init(EVP_PKEY_CTX *ctx)
|
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{
|
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TLS1_PRF_PKEY_CTX *kctx;
|
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|
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kctx = OPENSSL_zalloc(sizeof(*kctx));
|
||||
if (kctx == NULL)
|
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return 0;
|
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ctx->data = kctx;
|
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|
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return 1;
|
||||
}
|
||||
|
||||
static void pkey_tls1_prf_cleanup(EVP_PKEY_CTX *ctx)
|
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{
|
||||
TLS1_PRF_PKEY_CTX *kctx = ctx->data;
|
||||
OPENSSL_clear_free(kctx->sec, kctx->seclen);
|
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OPENSSL_cleanse(kctx->seed, kctx->seedlen);
|
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OPENSSL_free(kctx);
|
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}
|
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|
||||
static int pkey_tls1_prf_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
|
||||
{
|
||||
TLS1_PRF_PKEY_CTX *kctx = ctx->data;
|
||||
switch (type) {
|
||||
case EVP_PKEY_CTRL_TLS_MD:
|
||||
kctx->md = p2;
|
||||
return 1;
|
||||
|
||||
case EVP_PKEY_CTRL_TLS_SECRET:
|
||||
if (p1 < 0)
|
||||
return 0;
|
||||
if (kctx->sec != NULL)
|
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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)
|
||||
return 0;
|
||||
kctx->seclen = p1;
|
||||
return 1;
|
||||
|
||||
case EVP_PKEY_CTRL_TLS_SEED:
|
||||
if (p1 == 0 || p2 == NULL)
|
||||
return 1;
|
||||
if (p1 < 0 || p1 > (int)(TLS1_PRF_MAXBUF - kctx->seedlen))
|
||||
return 0;
|
||||
memcpy(kctx->seed + kctx->seedlen, p2, p1);
|
||||
kctx->seedlen += p1;
|
||||
return 1;
|
||||
|
||||
default:
|
||||
return -2;
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
static int pkey_tls1_prf_ctrl_str(EVP_PKEY_CTX *ctx,
|
||||
const char *type, const char *value)
|
||||
{
|
||||
if (value == NULL) {
|
||||
KDFerr(KDF_F_PKEY_TLS1_PRF_CTRL_STR, KDF_R_VALUE_MISSING);
|
||||
return 0;
|
||||
}
|
||||
if (strcmp(type, "md") == 0) {
|
||||
TLS1_PRF_PKEY_CTX *kctx = ctx->data;
|
||||
|
||||
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);
|
||||
if (strcmp(type, "hexsecret") == 0)
|
||||
return EVP_PKEY_CTX_hex2ctrl(ctx, EVP_PKEY_CTRL_TLS_SECRET, value);
|
||||
if (strcmp(type, "seed") == 0)
|
||||
return EVP_PKEY_CTX_str2ctrl(ctx, EVP_PKEY_CTRL_TLS_SEED, value);
|
||||
if (strcmp(type, "hexseed") == 0)
|
||||
return EVP_PKEY_CTX_hex2ctrl(ctx, EVP_PKEY_CTRL_TLS_SEED, value);
|
||||
return -2;
|
||||
}
|
||||
|
||||
static int pkey_tls1_prf_derive(EVP_PKEY_CTX *ctx, unsigned char *key,
|
||||
size_t *keylen)
|
||||
{
|
||||
TLS1_PRF_PKEY_CTX *kctx = ctx->data;
|
||||
if (kctx->md == NULL || kctx->sec == NULL || kctx->seedlen == 0) {
|
||||
KDFerr(KDF_F_PKEY_TLS1_PRF_DERIVE, KDF_R_MISSING_PARAMETER);
|
||||
return 0;
|
||||
}
|
||||
return tls1_prf_alg(kctx->md, kctx->sec, kctx->seclen,
|
||||
kctx->seed, kctx->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
|
||||
};
|
||||
|
||||
static int tls1_prf_P_hash(const EVP_MD *md,
|
||||
const unsigned char *sec, size_t sec_len,
|
||||
const unsigned char *seed, size_t seed_len,
|
||||
unsigned char *out, size_t olen)
|
||||
{
|
||||
int chunk;
|
||||
EVP_MD_CTX *ctx = NULL, *ctx_tmp = NULL, *ctx_init = NULL;
|
||||
EVP_PKEY *mac_key = NULL;
|
||||
unsigned char A1[EVP_MAX_MD_SIZE];
|
||||
size_t A1_len;
|
||||
int ret = 0;
|
||||
|
||||
chunk = EVP_MD_size(md);
|
||||
OPENSSL_assert(chunk >= 0);
|
||||
|
||||
ctx = EVP_MD_CTX_new();
|
||||
ctx_tmp = EVP_MD_CTX_new();
|
||||
ctx_init = EVP_MD_CTX_new();
|
||||
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_mac_key(EVP_PKEY_HMAC, NULL, sec, sec_len);
|
||||
if (mac_key == NULL)
|
||||
goto err;
|
||||
if (!EVP_DigestSignInit(ctx_init, NULL, md, NULL, mac_key))
|
||||
goto err;
|
||||
if (!EVP_MD_CTX_copy_ex(ctx, ctx_init))
|
||||
goto err;
|
||||
if (seed != NULL && !EVP_DigestSignUpdate(ctx, seed, seed_len))
|
||||
goto err;
|
||||
if (!EVP_DigestSignFinal(ctx, A1, &A1_len))
|
||||
goto err;
|
||||
|
||||
for (;;) {
|
||||
/* Reinit mac contexts */
|
||||
if (!EVP_MD_CTX_copy_ex(ctx, ctx_init))
|
||||
goto err;
|
||||
if (!EVP_DigestSignUpdate(ctx, A1, A1_len))
|
||||
goto err;
|
||||
if (olen > (size_t)chunk && !EVP_MD_CTX_copy_ex(ctx_tmp, ctx))
|
||||
goto err;
|
||||
if (seed && !EVP_DigestSignUpdate(ctx, seed, seed_len))
|
||||
goto err;
|
||||
|
||||
if (olen > (size_t)chunk) {
|
||||
size_t mac_len;
|
||||
if (!EVP_DigestSignFinal(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))
|
||||
goto err;
|
||||
} else { /* last one */
|
||||
|
||||
if (!EVP_DigestSignFinal(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);
|
||||
OPENSSL_cleanse(A1, sizeof(A1));
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int tls1_prf_alg(const EVP_MD *md,
|
||||
const unsigned char *sec, size_t slen,
|
||||
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))
|
||||
return 0;
|
||||
|
||||
tmp = OPENSSL_malloc(olen);
|
||||
if (tmp == NULL)
|
||||
return 0;
|
||||
if (!tls1_prf_P_hash(EVP_sha1(), sec + slen/2, slen/2 + (slen & 1),
|
||||
seed, seed_len, tmp, olen)) {
|
||||
OPENSSL_clear_free(tmp, olen);
|
||||
return 0;
|
||||
}
|
||||
for (i = 0; i < olen; i++)
|
||||
out[i] ^= tmp[i];
|
||||
OPENSSL_clear_free(tmp, olen);
|
||||
return 1;
|
||||
}
|
||||
if (!tls1_prf_P_hash(md, sec, slen, seed, seed_len, out, olen))
|
||||
return 0;
|
||||
|
||||
return 1;
|
||||
}
|
||||
Reference in New Issue
Block a user