Import HKDF code from OpenSSL 1.1.1o

This imports verbatim copies as of the OpenSSL_1_1_1o tag of

  crypto/kdf/hkdf.c
  crypto/kdf/hkdf_err.c
  include/openssl/kdf.h
  include/openssl/kdferr.h

from https://www.github.com/openssl/openssl.git into lib/libcrypto/kdf.

We only want the EVP interface to HKDF since some ports need them.  Not
yet linked to the build since it will not compile. Follow-on commits will
add KNF, clean up and make this compile.

Tests of an early draft version by abieber and Caspar Schutijser

ok jsing

4 files changed, 571 insertions, 0 deletions

diff --git a/src/lib/libcrypto/kdf/hkdf.c b/src/lib/libcrypto/kdf/hkdf.c
new file mode 100644
index 0000000000..25bf4b729f
--- /dev/null
+++ b/src/lib/libcrypto/kdf/hkdf.c
@@ -0,0 +1,352 @@
+/*
+ * Copyright 2016-2018 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 <stdlib.h>
+#include <string.h>
+#include <openssl/hmac.h>
+#include <openssl/kdf.h>
+#include <openssl/evp.h>
+#include "internal/cryptlib.h"
+#include "crypto/evp.h"
+
+#define HKDF_MAXBUF 1024
+
+static unsigned char *HKDF(const EVP_MD *evp_md,
+                           const unsigned char *salt, size_t salt_len,
+                           const unsigned char *key, size_t key_len,
+                           const unsigned char *info, size_t info_len,
+                           unsigned char *okm, size_t okm_len);
+
+static unsigned char *HKDF_Extract(const EVP_MD *evp_md,
+                                   const unsigned char *salt, size_t salt_len,
+                                   const unsigned char *key, size_t key_len,
+                                   unsigned char *prk, size_t *prk_len);
+
+static unsigned char *HKDF_Expand(const EVP_MD *evp_md,
+                                  const unsigned char *prk, size_t prk_len,
+                                  const unsigned char *info, size_t info_len,
+                                  unsigned char *okm, size_t okm_len);
+
+typedef struct {
+    int mode;
+    const EVP_MD *md;
+    unsigned char *salt;
+    size_t salt_len;
+    unsigned char *key;
+    size_t key_len;
+    unsigned char info[HKDF_MAXBUF];
+    size_t info_len;
+} HKDF_PKEY_CTX;
+
+static int pkey_hkdf_init(EVP_PKEY_CTX *ctx)
+{
+    HKDF_PKEY_CTX *kctx;
+
+    if ((kctx = OPENSSL_zalloc(sizeof(*kctx))) == NULL) {
+        KDFerr(KDF_F_PKEY_HKDF_INIT, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+
+    ctx->data = kctx;
+
+    return 1;
+}
+
+static void pkey_hkdf_cleanup(EVP_PKEY_CTX *ctx)
+{
+    HKDF_PKEY_CTX *kctx = ctx->data;
+    OPENSSL_clear_free(kctx->salt, kctx->salt_len);
+    OPENSSL_clear_free(kctx->key, kctx->key_len);
+    OPENSSL_cleanse(kctx->info, kctx->info_len);
+    OPENSSL_free(kctx);
+}
+
+static int pkey_hkdf_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
+{
+    HKDF_PKEY_CTX *kctx = ctx->data;
+
+    switch (type) {
+    case EVP_PKEY_CTRL_HKDF_MD:
+        if (p2 == NULL)
+            return 0;
+
+        kctx->md = p2;
+        return 1;
+
+    case EVP_PKEY_CTRL_HKDF_MODE:
+        kctx->mode = p1;
+        return 1;
+
+    case EVP_PKEY_CTRL_HKDF_SALT:
+        if (p1 == 0 || p2 == NULL)
+            return 1;
+
+        if (p1 < 0)
+            return 0;
+
+        if (kctx->salt != NULL)
+            OPENSSL_clear_free(kctx->salt, kctx->salt_len);
+
+        kctx->salt = OPENSSL_memdup(p2, p1);
+        if (kctx->salt == NULL)
+            return 0;
+
+        kctx->salt_len = p1;
+        return 1;
+
+    case EVP_PKEY_CTRL_HKDF_KEY:
+        if (p1 < 0)
+            return 0;
+
+        if (kctx->key != NULL)
+            OPENSSL_clear_free(kctx->key, kctx->key_len);
+
+        kctx->key = OPENSSL_memdup(p2, p1);
+        if (kctx->key == NULL)
+            return 0;
+
+        kctx->key_len  = p1;
+        return 1;
+
+    case EVP_PKEY_CTRL_HKDF_INFO:
+        if (p1 == 0 || p2 == NULL)
+            return 1;
+
+        if (p1 < 0 || p1 > (int)(HKDF_MAXBUF - kctx->info_len))
+            return 0;
+
+        memcpy(kctx->info + kctx->info_len, p2, p1);
+        kctx->info_len += p1;
+        return 1;
+
+    default:
+        return -2;
+
+    }
+}
+
+static int pkey_hkdf_ctrl_str(EVP_PKEY_CTX *ctx, const char *type,
+                              const char *value)
+{
+    if (strcmp(type, "mode") == 0) {
+        int mode;
+
+        if (strcmp(value, "EXTRACT_AND_EXPAND") == 0)
+            mode = EVP_PKEY_HKDEF_MODE_EXTRACT_AND_EXPAND;
+        else if (strcmp(value, "EXTRACT_ONLY") == 0)
+            mode = EVP_PKEY_HKDEF_MODE_EXTRACT_ONLY;
+        else if (strcmp(value, "EXPAND_ONLY") == 0)
+            mode = EVP_PKEY_HKDEF_MODE_EXPAND_ONLY;
+        else
+            return 0;
+
+        return EVP_PKEY_CTX_hkdf_mode(ctx, mode);
+    }
+
+    if (strcmp(type, "md") == 0)
+        return EVP_PKEY_CTX_md(ctx, EVP_PKEY_OP_DERIVE,
+                               EVP_PKEY_CTRL_HKDF_MD, value);
+
+    if (strcmp(type, "salt") == 0)
+        return EVP_PKEY_CTX_str2ctrl(ctx, EVP_PKEY_CTRL_HKDF_SALT, value);
+
+    if (strcmp(type, "hexsalt") == 0)
+        return EVP_PKEY_CTX_hex2ctrl(ctx, EVP_PKEY_CTRL_HKDF_SALT, value);
+
+    if (strcmp(type, "key") == 0)
+        return EVP_PKEY_CTX_str2ctrl(ctx, EVP_PKEY_CTRL_HKDF_KEY, value);
+
+    if (strcmp(type, "hexkey") == 0)
+        return EVP_PKEY_CTX_hex2ctrl(ctx, EVP_PKEY_CTRL_HKDF_KEY, value);
+
+    if (strcmp(type, "info") == 0)
+        return EVP_PKEY_CTX_str2ctrl(ctx, EVP_PKEY_CTRL_HKDF_INFO, value);
+
+    if (strcmp(type, "hexinfo") == 0)
+        return EVP_PKEY_CTX_hex2ctrl(ctx, EVP_PKEY_CTRL_HKDF_INFO, value);
+
+    KDFerr(KDF_F_PKEY_HKDF_CTRL_STR, KDF_R_UNKNOWN_PARAMETER_TYPE);
+    return -2;
+}
+
+static int pkey_hkdf_derive_init(EVP_PKEY_CTX *ctx)
+{
+    HKDF_PKEY_CTX *kctx = ctx->data;
+
+    OPENSSL_clear_free(kctx->key, kctx->key_len);
+    OPENSSL_clear_free(kctx->salt, kctx->salt_len);
+    OPENSSL_cleanse(kctx->info, kctx->info_len);
+    memset(kctx, 0, sizeof(*kctx));
+
+    return 1;
+}
+
+static int pkey_hkdf_derive(EVP_PKEY_CTX *ctx, unsigned char *key,
+                            size_t *keylen)
+{
+    HKDF_PKEY_CTX *kctx = ctx->data;
+
+    if (kctx->md == NULL) {
+        KDFerr(KDF_F_PKEY_HKDF_DERIVE, KDF_R_MISSING_MESSAGE_DIGEST);
+        return 0;
+    }
+    if (kctx->key == NULL) {
+        KDFerr(KDF_F_PKEY_HKDF_DERIVE, KDF_R_MISSING_KEY);
+        return 0;
+    }
+
+    switch (kctx->mode) {
+    case EVP_PKEY_HKDEF_MODE_EXTRACT_AND_EXPAND:
+        return HKDF(kctx->md, kctx->salt, kctx->salt_len, kctx->key,
+                    kctx->key_len, kctx->info, kctx->info_len, key,
+                    *keylen) != NULL;
+
+    case EVP_PKEY_HKDEF_MODE_EXTRACT_ONLY:
+        if (key == NULL) {
+            *keylen = EVP_MD_size(kctx->md);
+            return 1;
+        }
+        return HKDF_Extract(kctx->md, kctx->salt, kctx->salt_len, kctx->key,
+                            kctx->key_len, key, keylen) != NULL;
+
+    case EVP_PKEY_HKDEF_MODE_EXPAND_ONLY:
+        return HKDF_Expand(kctx->md, kctx->key, kctx->key_len, kctx->info,
+                           kctx->info_len, key, *keylen) != NULL;
+
+    default:
+        return 0;
+    }
+}
+
+const EVP_PKEY_METHOD hkdf_pkey_meth = {
+    EVP_PKEY_HKDF,
+    0,
+    pkey_hkdf_init,
+    0,
+    pkey_hkdf_cleanup,
+
+    0, 0,
+    0, 0,
+
+    0,
+    0,
+
+    0,
+    0,
+
+    0, 0,
+
+    0, 0, 0, 0,
+
+    0, 0,
+
+    0, 0,
+
+    pkey_hkdf_derive_init,
+    pkey_hkdf_derive,
+    pkey_hkdf_ctrl,
+    pkey_hkdf_ctrl_str
+};
+
+static unsigned char *HKDF(const EVP_MD *evp_md,
+                           const unsigned char *salt, size_t salt_len,
+                           const unsigned char *key, size_t key_len,
+                           const unsigned char *info, size_t info_len,
+                           unsigned char *okm, size_t okm_len)
+{
+    unsigned char prk[EVP_MAX_MD_SIZE];
+    unsigned char *ret;
+    size_t prk_len;
+
+    if (!HKDF_Extract(evp_md, salt, salt_len, key, key_len, prk, &prk_len))
+        return NULL;
+
+    ret = HKDF_Expand(evp_md, prk, prk_len, info, info_len, okm, okm_len);
+    OPENSSL_cleanse(prk, sizeof(prk));
+
+    return ret;
+}
+
+static unsigned char *HKDF_Extract(const EVP_MD *evp_md,
+                                   const unsigned char *salt, size_t salt_len,
+                                   const unsigned char *key, size_t key_len,
+                                   unsigned char *prk, size_t *prk_len)
+{
+    unsigned int tmp_len;
+
+    if (!HMAC(evp_md, salt, salt_len, key, key_len, prk, &tmp_len))
+        return NULL;
+
+    *prk_len = tmp_len;
+    return prk;
+}
+
+static unsigned char *HKDF_Expand(const EVP_MD *evp_md,
+                                  const unsigned char *prk, size_t prk_len,
+                                  const unsigned char *info, size_t info_len,
+                                  unsigned char *okm, size_t okm_len)
+{
+    HMAC_CTX *hmac;
+    unsigned char *ret = NULL;
+
+    unsigned int i;
+
+    unsigned char prev[EVP_MAX_MD_SIZE];
+
+    size_t done_len = 0, dig_len = EVP_MD_size(evp_md);
+
+    size_t n = okm_len / dig_len;
+    if (okm_len % dig_len)
+        n++;
+
+    if (n > 255 || okm == NULL)
+        return NULL;
+
+    if ((hmac = HMAC_CTX_new()) == NULL)
+        return NULL;
+
+    if (!HMAC_Init_ex(hmac, prk, prk_len, evp_md, NULL))
+        goto err;
+
+    for (i = 1; i <= n; i++) {
+        size_t copy_len;
+        const unsigned char ctr = i;
+
+        if (i > 1) {
+            if (!HMAC_Init_ex(hmac, NULL, 0, NULL, NULL))
+                goto err;
+
+            if (!HMAC_Update(hmac, prev, dig_len))
+                goto err;
+        }
+
+        if (!HMAC_Update(hmac, info, info_len))
+            goto err;
+
+        if (!HMAC_Update(hmac, &ctr, 1))
+            goto err;
+
+        if (!HMAC_Final(hmac, prev, NULL))
+            goto err;
+
+        copy_len = (done_len + dig_len > okm_len) ?
+                       okm_len - done_len :
+                       dig_len;
+
+        memcpy(okm + done_len, prev, copy_len);
+
+        done_len += copy_len;
+    }
+    ret = okm;
+
+ err:
+    OPENSSL_cleanse(prev, sizeof(prev));
+    HMAC_CTX_free(hmac);
+    return ret;
+}
diff --git a/src/lib/libcrypto/kdf/kdf.h b/src/lib/libcrypto/kdf/kdf.h
new file mode 100644
index 0000000000..5abd4c3714
--- /dev/null
+++ b/src/lib/libcrypto/kdf/kdf.h
@@ -0,0 +1,97 @@
+/*
+ * Copyright 2016-2018 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
+ */
+
+#ifndef HEADER_KDF_H
+# define HEADER_KDF_H
+
+# include <openssl/kdferr.h>
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+# define EVP_PKEY_CTRL_TLS_MD                   (EVP_PKEY_ALG_CTRL)
+# define EVP_PKEY_CTRL_TLS_SECRET               (EVP_PKEY_ALG_CTRL + 1)
+# define EVP_PKEY_CTRL_TLS_SEED                 (EVP_PKEY_ALG_CTRL + 2)
+# define EVP_PKEY_CTRL_HKDF_MD                  (EVP_PKEY_ALG_CTRL + 3)
+# define EVP_PKEY_CTRL_HKDF_SALT                (EVP_PKEY_ALG_CTRL + 4)
+# define EVP_PKEY_CTRL_HKDF_KEY                 (EVP_PKEY_ALG_CTRL + 5)
+# define EVP_PKEY_CTRL_HKDF_INFO                (EVP_PKEY_ALG_CTRL + 6)
+# define EVP_PKEY_CTRL_HKDF_MODE                (EVP_PKEY_ALG_CTRL + 7)
+# define EVP_PKEY_CTRL_PASS                     (EVP_PKEY_ALG_CTRL + 8)
+# define EVP_PKEY_CTRL_SCRYPT_SALT              (EVP_PKEY_ALG_CTRL + 9)
+# define EVP_PKEY_CTRL_SCRYPT_N                 (EVP_PKEY_ALG_CTRL + 10)
+# define EVP_PKEY_CTRL_SCRYPT_R                 (EVP_PKEY_ALG_CTRL + 11)
+# define EVP_PKEY_CTRL_SCRYPT_P                 (EVP_PKEY_ALG_CTRL + 12)
+# define EVP_PKEY_CTRL_SCRYPT_MAXMEM_BYTES      (EVP_PKEY_ALG_CTRL + 13)
+
+# define EVP_PKEY_HKDEF_MODE_EXTRACT_AND_EXPAND 0
+# define EVP_PKEY_HKDEF_MODE_EXTRACT_ONLY       1
+# define EVP_PKEY_HKDEF_MODE_EXPAND_ONLY        2
+
+# define EVP_PKEY_CTX_set_tls1_prf_md(pctx, md) \
+            EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_DERIVE, \
+                              EVP_PKEY_CTRL_TLS_MD, 0, (void *)(md))
+
+# define EVP_PKEY_CTX_set1_tls1_prf_secret(pctx, sec, seclen) \
+            EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_DERIVE, \
+                              EVP_PKEY_CTRL_TLS_SECRET, seclen, (void *)(sec))
+
+# define EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed, seedlen) \
+            EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_DERIVE, \
+                              EVP_PKEY_CTRL_TLS_SEED, seedlen, (void *)(seed))
+
+# define EVP_PKEY_CTX_set_hkdf_md(pctx, md) \
+            EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_DERIVE, \
+                              EVP_PKEY_CTRL_HKDF_MD, 0, (void *)(md))
+
+# define EVP_PKEY_CTX_set1_hkdf_salt(pctx, salt, saltlen) \
+            EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_DERIVE, \
+                              EVP_PKEY_CTRL_HKDF_SALT, saltlen, (void *)(salt))
+
+# define EVP_PKEY_CTX_set1_hkdf_key(pctx, key, keylen) \
+            EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_DERIVE, \
+                              EVP_PKEY_CTRL_HKDF_KEY, keylen, (void *)(key))
+
+# define EVP_PKEY_CTX_add1_hkdf_info(pctx, info, infolen) \
+            EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_DERIVE, \
+                              EVP_PKEY_CTRL_HKDF_INFO, infolen, (void *)(info))
+
+# define EVP_PKEY_CTX_hkdf_mode(pctx, mode) \
+            EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_DERIVE, \
+                              EVP_PKEY_CTRL_HKDF_MODE, mode, NULL)
+
+# define EVP_PKEY_CTX_set1_pbe_pass(pctx, pass, passlen) \
+            EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_DERIVE, \
+                            EVP_PKEY_CTRL_PASS, passlen, (void *)(pass))
+
+# define EVP_PKEY_CTX_set1_scrypt_salt(pctx, salt, saltlen) \
+            EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_DERIVE, \
+                            EVP_PKEY_CTRL_SCRYPT_SALT, saltlen, (void *)(salt))
+
+# define EVP_PKEY_CTX_set_scrypt_N(pctx, n) \
+            EVP_PKEY_CTX_ctrl_uint64(pctx, -1, EVP_PKEY_OP_DERIVE, \
+                            EVP_PKEY_CTRL_SCRYPT_N, n)
+
+# define EVP_PKEY_CTX_set_scrypt_r(pctx, r) \
+            EVP_PKEY_CTX_ctrl_uint64(pctx, -1, EVP_PKEY_OP_DERIVE, \
+                            EVP_PKEY_CTRL_SCRYPT_R, r)
+
+# define EVP_PKEY_CTX_set_scrypt_p(pctx, p) \
+            EVP_PKEY_CTX_ctrl_uint64(pctx, -1, EVP_PKEY_OP_DERIVE, \
+                            EVP_PKEY_CTRL_SCRYPT_P, p)
+
+# define EVP_PKEY_CTX_set_scrypt_maxmem_bytes(pctx, maxmem_bytes) \
+            EVP_PKEY_CTX_ctrl_uint64(pctx, -1, EVP_PKEY_OP_DERIVE, \
+                            EVP_PKEY_CTRL_SCRYPT_MAXMEM_BYTES, maxmem_bytes)
+
+
+# ifdef  __cplusplus
+}
+# endif
+#endif
diff --git a/src/lib/libcrypto/kdf/kdf_err.c b/src/lib/libcrypto/kdf/kdf_err.c
new file mode 100644
index 0000000000..1627c0a394
--- /dev/null
+++ b/src/lib/libcrypto/kdf/kdf_err.c
@@ -0,0 +1,67 @@
+/*
+ * Generated by util/mkerr.pl DO NOT EDIT
+ * Copyright 1995-2018 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 <openssl/err.h>
+#include <openssl/kdferr.h>
+
+#ifndef OPENSSL_NO_ERR
+
+static const ERR_STRING_DATA KDF_str_functs[] = {
+    {ERR_PACK(ERR_LIB_KDF, KDF_F_PKEY_HKDF_CTRL_STR, 0), "pkey_hkdf_ctrl_str"},
+    {ERR_PACK(ERR_LIB_KDF, KDF_F_PKEY_HKDF_DERIVE, 0), "pkey_hkdf_derive"},
+    {ERR_PACK(ERR_LIB_KDF, KDF_F_PKEY_HKDF_INIT, 0), "pkey_hkdf_init"},
+    {ERR_PACK(ERR_LIB_KDF, KDF_F_PKEY_SCRYPT_CTRL_STR, 0),
+     "pkey_scrypt_ctrl_str"},
+    {ERR_PACK(ERR_LIB_KDF, KDF_F_PKEY_SCRYPT_CTRL_UINT64, 0),
+     "pkey_scrypt_ctrl_uint64"},
+    {ERR_PACK(ERR_LIB_KDF, KDF_F_PKEY_SCRYPT_DERIVE, 0), "pkey_scrypt_derive"},
+    {ERR_PACK(ERR_LIB_KDF, KDF_F_PKEY_SCRYPT_INIT, 0), "pkey_scrypt_init"},
+    {ERR_PACK(ERR_LIB_KDF, KDF_F_PKEY_SCRYPT_SET_MEMBUF, 0),
+     "pkey_scrypt_set_membuf"},
+    {ERR_PACK(ERR_LIB_KDF, KDF_F_PKEY_TLS1_PRF_CTRL_STR, 0),
+     "pkey_tls1_prf_ctrl_str"},
+    {ERR_PACK(ERR_LIB_KDF, KDF_F_PKEY_TLS1_PRF_DERIVE, 0),
+     "pkey_tls1_prf_derive"},
+    {ERR_PACK(ERR_LIB_KDF, KDF_F_PKEY_TLS1_PRF_INIT, 0), "pkey_tls1_prf_init"},
+    {ERR_PACK(ERR_LIB_KDF, KDF_F_TLS1_PRF_ALG, 0), "tls1_prf_alg"},
+    {0, NULL}
+};
+
+static const ERR_STRING_DATA KDF_str_reasons[] = {
+    {ERR_PACK(ERR_LIB_KDF, 0, KDF_R_INVALID_DIGEST), "invalid digest"},
+    {ERR_PACK(ERR_LIB_KDF, 0, KDF_R_MISSING_ITERATION_COUNT),
+    "missing iteration count"},
+    {ERR_PACK(ERR_LIB_KDF, 0, KDF_R_MISSING_KEY), "missing key"},
+    {ERR_PACK(ERR_LIB_KDF, 0, KDF_R_MISSING_MESSAGE_DIGEST),
+    "missing message digest"},
+    {ERR_PACK(ERR_LIB_KDF, 0, KDF_R_MISSING_PARAMETER), "missing parameter"},
+    {ERR_PACK(ERR_LIB_KDF, 0, KDF_R_MISSING_PASS), "missing pass"},
+    {ERR_PACK(ERR_LIB_KDF, 0, KDF_R_MISSING_SALT), "missing salt"},
+    {ERR_PACK(ERR_LIB_KDF, 0, KDF_R_MISSING_SECRET), "missing secret"},
+    {ERR_PACK(ERR_LIB_KDF, 0, KDF_R_MISSING_SEED), "missing seed"},
+    {ERR_PACK(ERR_LIB_KDF, 0, KDF_R_UNKNOWN_PARAMETER_TYPE),
+    "unknown parameter type"},
+    {ERR_PACK(ERR_LIB_KDF, 0, KDF_R_VALUE_ERROR), "value error"},
+    {ERR_PACK(ERR_LIB_KDF, 0, KDF_R_VALUE_MISSING), "value missing"},
+    {0, NULL}
+};
+
+#endif
+
+int ERR_load_KDF_strings(void)
+{
+#ifndef OPENSSL_NO_ERR
+    if (ERR_func_error_string(KDF_str_functs[0].error) == NULL) {
+        ERR_load_strings_const(KDF_str_functs);
+        ERR_load_strings_const(KDF_str_reasons);
+    }
+#endif
+    return 1;
+}
diff --git a/src/lib/libcrypto/kdf/kdferr.h b/src/lib/libcrypto/kdf/kdferr.h
new file mode 100644
index 0000000000..3f51bd0228
--- /dev/null
+++ b/src/lib/libcrypto/kdf/kdferr.h
@@ -0,0 +1,55 @@
+/*
+ * Generated by util/mkerr.pl DO NOT EDIT
+ * Copyright 1995-2019 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
+ */
+
+#ifndef HEADER_KDFERR_H
+# define HEADER_KDFERR_H
+
+# ifndef HEADER_SYMHACKS_H
+#  include <openssl/symhacks.h>
+# endif
+
+# ifdef  __cplusplus
+extern "C"
+# endif
+int ERR_load_KDF_strings(void);
+
+/*
+ * KDF function codes.
+ */
+# define KDF_F_PKEY_HKDF_CTRL_STR                         103
+# define KDF_F_PKEY_HKDF_DERIVE                           102
+# define KDF_F_PKEY_HKDF_INIT                             108
+# define KDF_F_PKEY_SCRYPT_CTRL_STR                       104
+# define KDF_F_PKEY_SCRYPT_CTRL_UINT64                    105
+# define KDF_F_PKEY_SCRYPT_DERIVE                         109
+# define KDF_F_PKEY_SCRYPT_INIT                           106
+# define KDF_F_PKEY_SCRYPT_SET_MEMBUF                     107
+# define KDF_F_PKEY_TLS1_PRF_CTRL_STR                     100
+# define KDF_F_PKEY_TLS1_PRF_DERIVE                       101
+# define KDF_F_PKEY_TLS1_PRF_INIT                         110
+# define KDF_F_TLS1_PRF_ALG                               111
+
+/*
+ * KDF reason codes.
+ */
+# define KDF_R_INVALID_DIGEST                             100
+# define KDF_R_MISSING_ITERATION_COUNT                    109
+# define KDF_R_MISSING_KEY                                104
+# define KDF_R_MISSING_MESSAGE_DIGEST                     105
+# define KDF_R_MISSING_PARAMETER                          101
+# define KDF_R_MISSING_PASS                               110
+# define KDF_R_MISSING_SALT                               111
+# define KDF_R_MISSING_SECRET                             107
+# define KDF_R_MISSING_SEED                               106
+# define KDF_R_UNKNOWN_PARAMETER_TYPE                     103
+# define KDF_R_VALUE_ERROR                                108
+# define KDF_R_VALUE_MISSING                              102
+
+#endif