Add X9.42 KDF.

Move the KDF code for CMS DH key agreement into an EVP_KDF object.
There are 2 specifications for X9.42 KDF. This implementation uses DER for
otherinfo which embeds the KDF loop counter inside the DER object.
Reviewed-by: NTomas Mraz <tmraz@fedoraproject.org>
Reviewed-by: NMatt Caswell <matt@openssl.org>
Reviewed-by: NPaul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/8898)

crypto/dh/dh_kdf.c

 /*
- * Copyright 2013-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2013-2019 The OpenSSL Project Authors. All Rights Reserved.
  *
  * 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
@@ -10,141 +10,43 @@
 #include "e_os.h"
 
 #ifndef OPENSSL_NO_CMS
-#include <string.h>
-#include <openssl/dh.h>
-#include <openssl/evp.h>
-#include <openssl/asn1.h>
-#include <openssl/cms.h>
-
-
-/* Key derivation from X9.42/RFC2631 */
-/* Uses CMS functions, hence the #ifdef wrapper. */
-
-#define DH_KDF_MAX      (1L << 30)
-
-/* Skip past an ASN1 structure: for OBJECT skip content octets too */
-
-static int skip_asn1(unsigned char **pp, long *plen, int exptag)
-{
-    const unsigned char *q = *pp;
-    int i, tag, xclass;
-    long tmplen;
-    i = ASN1_get_object(&q, &tmplen, &tag, &xclass, *plen);
-    if (i & 0x80)
-        return 0;
-    if (tag != exptag || xclass != V_ASN1_UNIVERSAL)
-        return 0;
-    if (tag == V_ASN1_OBJECT)
-        q += tmplen;
-    *plen -= q - *pp;
-    *pp = (unsigned char *)q;
-    return 1;
-}
-
-/*
- * Encode the DH shared info structure, return an offset to the counter value
- * so we can update the structure without reencoding it.
- */
-
-static int dh_sharedinfo_encode(unsigned char **pder, unsigned char **pctr,
-                                ASN1_OBJECT *key_oid, size_t outlen,
-                                const unsigned char *ukm, size_t ukmlen)
-{
-    unsigned char *p;
-    int derlen;
-    long tlen;
-    /* "magic" value to check offset is sane */
-    static unsigned char ctr[4] = { 0xF3, 0x17, 0x22, 0x53 };
-    X509_ALGOR atmp;
-    ASN1_OCTET_STRING ctr_oct, ukm_oct, *pukm_oct;
-    ASN1_TYPE ctr_atype;
-    if (ukmlen > DH_KDF_MAX || outlen > DH_KDF_MAX)
-        return 0;
-    ctr_oct.data = ctr;
-    ctr_oct.length = 4;
-    ctr_oct.flags = 0;
-    ctr_oct.type = V_ASN1_OCTET_STRING;
-    ctr_atype.type = V_ASN1_OCTET_STRING;
-    ctr_atype.value.octet_string = &ctr_oct;
-    atmp.algorithm = key_oid;
-    atmp.parameter = &ctr_atype;
-    if (ukm) {
-        ukm_oct.type = V_ASN1_OCTET_STRING;
-        ukm_oct.flags = 0;
-        ukm_oct.data = (unsigned char *)ukm;
-        ukm_oct.length = ukmlen;
-        pukm_oct = &ukm_oct;
-    } else
-        pukm_oct = NULL;
-    derlen = CMS_SharedInfo_encode(pder, &atmp, pukm_oct, outlen);
-    if (derlen <= 0)
-        return 0;
-    p = *pder;
-    tlen = derlen;
-    if (!skip_asn1(&p, &tlen, V_ASN1_SEQUENCE))
-        return 0;
-    if (!skip_asn1(&p, &tlen, V_ASN1_SEQUENCE))
-        return 0;
-    if (!skip_asn1(&p, &tlen, V_ASN1_OBJECT))
-        return 0;
-    if (!skip_asn1(&p, &tlen, V_ASN1_OCTET_STRING))
-        return 0;
-    if (CRYPTO_memcmp(p, ctr, 4))
-        return 0;
-    *pctr = p;
-    return derlen;
-}
+# include <string.h>
+# include <openssl/dh.h>
+# include <openssl/evp.h>
+# include <openssl/asn1.h>
+# include <openssl/kdf.h>
 
 int DH_KDF_X9_42(unsigned char *out, size_t outlen,
                  const unsigned char *Z, size_t Zlen,
                  ASN1_OBJECT *key_oid,
                  const unsigned char *ukm, size_t ukmlen, const EVP_MD *md)
 {
-    EVP_MD_CTX *mctx = NULL;
-    int rv = 0;
-    unsigned int i;
-    size_t mdlen;
-    unsigned char *der = NULL, *ctr;
-    int derlen;
-    if (Zlen > DH_KDF_MAX)
+    int ret = 0, nid;
+    EVP_KDF_CTX *kctx = NULL;
+    const EVP_KDF *kdf = NULL;
+    const char *oid_sn;
+
+    nid = OBJ_obj2nid(key_oid);
+    if (nid == NID_undef)
         return 0;
-    mctx = EVP_MD_CTX_new();
-    if (mctx == NULL)
+    oid_sn = OBJ_nid2sn(nid);
+    if (oid_sn == NULL)
         return 0;
-    mdlen = EVP_MD_size(md);
-    derlen = dh_sharedinfo_encode(&der, &ctr, key_oid, outlen, ukm, ukmlen);
-    if (derlen == 0)
+
+    kdf = EVP_get_kdfbyname(SN_x942kdf);
+    if (kdf == NULL)
         goto err;
-    for (i = 1;; i++) {
-        unsigned char mtmp[EVP_MAX_MD_SIZE];
-        if (!EVP_DigestInit_ex(mctx, md, NULL)
-            || !EVP_DigestUpdate(mctx, Z, Zlen))
-            goto err;
-        ctr[3] = i & 0xFF;
-        ctr[2] = (i >> 8) & 0xFF;
-        ctr[1] = (i >> 16) & 0xFF;
-        ctr[0] = (i >> 24) & 0xFF;
-        if (!EVP_DigestUpdate(mctx, der, derlen))
-            goto err;
-        if (outlen >= mdlen) {
-            if (!EVP_DigestFinal(mctx, out, NULL))
-                goto err;
-            outlen -= mdlen;
-            if (outlen == 0)
-                break;
-            out += mdlen;
-        } else {
-            if (!EVP_DigestFinal(mctx, mtmp, NULL))
-                goto err;
-            memcpy(out, mtmp, outlen);
-            OPENSSL_cleanse(mtmp, mdlen);
-            break;
-        }
-    }
-    rv = 1;
- err:
-    OPENSSL_free(der);
-    EVP_MD_CTX_free(mctx);
-    return rv;
+    kctx = EVP_KDF_CTX_new(kdf);
+    ret =
+        kctx != NULL
+        && EVP_KDF_ctrl(kctx, EVP_KDF_CTRL_SET_MD, md) > 0
+        && EVP_KDF_ctrl(kctx, EVP_KDF_CTRL_SET_KEY, Z, Zlen) > 0
+        && (ukm == NULL
+            || EVP_KDF_ctrl(kctx, EVP_KDF_CTRL_SET_UKM, ukm, ukmlen) > 0)
+        && EVP_KDF_ctrl(kctx, EVP_KDF_CTRL_SET_CEK_ALG, oid_sn) > 0
+        && EVP_KDF_derive(kctx, out, outlen) > 0;
+err:
+    EVP_KDF_CTX_free(kctx);
+    return ret;
 }
-#endif
+#endif /* OPENSSL_NO_CMS */

crypto/err/openssl.txt

@@ -935,6 +935,11 @@ KDF_F_SSKDF_MAC2CTRL:136:sskdf_mac2ctrl
 KDF_F_SSKDF_NEW:137:sskdf_new
 KDF_F_SSKDF_SIZE:138:sskdf_size
 KDF_F_TLS1_PRF_ALG:111:tls1_prf_alg
+KDF_F_X942KDF_CTRL:142:x942kdf_ctrl
+KDF_F_X942KDF_DERIVE:143:x942kdf_derive
+KDF_F_X942KDF_HASH_KDM:144:x942kdf_hash_kdm
+KDF_F_X942KDF_NEW:145:x942kdf_new
+KDF_F_X942KDF_SIZE:146:x942kdf_size
 KDF_F_X963KDF_DERIVE:139:x963kdf_derive
 OBJ_F_OBJ_ADD_OBJECT:105:OBJ_add_object
 OBJ_F_OBJ_ADD_SIGID:107:OBJ_add_sigid
@@ -2469,11 +2474,15 @@ EVP_R_WRAP_MODE_NOT_ALLOWED:170:wrap mode not allowed
 EVP_R_WRONG_FINAL_BLOCK_LENGTH:109:wrong final block length
 EVP_R_XTS_DATA_UNIT_IS_TOO_LARGE:191:xts data unit is too large
 EVP_R_XTS_DUPLICATED_KEYS:192:xts duplicated keys
+KDF_R_BAD_ENCODING:122:bad encoding
+KDF_R_BAD_LENGTH:123:bad length
+KDF_R_INAVLID_UKM_LEN:124:inavlid ukm len
 KDF_R_INVALID_DIGEST:100:invalid digest
 KDF_R_INVALID_ITERATION_COUNT:119:invalid iteration count
 KDF_R_INVALID_KEY_LEN:120:invalid key len
 KDF_R_INVALID_MAC_TYPE:116:invalid mac type
 KDF_R_INVALID_SALT_LEN:121:invalid salt len
+KDF_R_MISSING_CEK_ALG:125:missing cek alg
 KDF_R_MISSING_ITERATION_COUNT:109:missing iteration count
 KDF_R_MISSING_KEY:104:missing key
 KDF_R_MISSING_MESSAGE_DIGEST:105:missing message digest
@@ -2487,6 +2496,7 @@ KDF_R_MISSING_TYPE:114:missing type
 KDF_R_MISSING_XCGHASH:115:missing xcghash
 KDF_R_NOT_SUPPORTED:118:not supported
 KDF_R_UNKNOWN_PARAMETER_TYPE:103:unknown parameter type
+KDF_R_UNSUPPORTED_CEK_ALG:126:unsupported cek alg
 KDF_R_UNSUPPORTED_MAC_TYPE:117:unsupported mac type
 KDF_R_VALUE_ERROR:108:value error
 KDF_R_VALUE_MISSING:102:value missing

crypto/evp/c_allkdf.c

@@ -21,4 +21,7 @@ void openssl_add_all_kdfs_int(void)
     EVP_add_kdf(&sshkdf_kdf_meth);
     EVP_add_kdf(&ss_kdf_meth);
     EVP_add_kdf(&x963_kdf_meth);
+#ifndef OPENSSL_NO_CMS
+    EVP_add_kdf(&x942_kdf_meth);
+#endif
 }

crypto/include/internal/evp_int.h

@@ -173,6 +173,7 @@ extern const EVP_KDF hkdf_kdf_meth;
 extern const EVP_KDF sshkdf_kdf_meth;
 extern const EVP_KDF ss_kdf_meth;
 extern const EVP_KDF x963_kdf_meth;
+extern const EVP_KDF x942_kdf_meth;
 
 struct evp_md_st {
     /* nid */

crypto/kdf/build.info

 LIBS=../../libcrypto
 SOURCE[../../libcrypto]=\
         tls1_prf.c kdf_err.c kdf_util.c hkdf.c scrypt.c pbkdf2.c sshkdf.c \
-        sskdf.c
+        sskdf.c x942kdf.c

crypto/kdf/kdf_err.c

@@ -67,17 +67,26 @@ static const ERR_STRING_DATA KDF_str_functs[] = {
     {ERR_PACK(ERR_LIB_KDF, KDF_F_SSKDF_NEW, 0), "sskdf_new"},
     {ERR_PACK(ERR_LIB_KDF, KDF_F_SSKDF_SIZE, 0), "sskdf_size"},
     {ERR_PACK(ERR_LIB_KDF, KDF_F_TLS1_PRF_ALG, 0), "tls1_prf_alg"},
+    {ERR_PACK(ERR_LIB_KDF, KDF_F_X942KDF_CTRL, 0), "x942kdf_ctrl"},
+    {ERR_PACK(ERR_LIB_KDF, KDF_F_X942KDF_DERIVE, 0), "x942kdf_derive"},
+    {ERR_PACK(ERR_LIB_KDF, KDF_F_X942KDF_HASH_KDM, 0), "x942kdf_hash_kdm"},
+    {ERR_PACK(ERR_LIB_KDF, KDF_F_X942KDF_NEW, 0), "x942kdf_new"},
+    {ERR_PACK(ERR_LIB_KDF, KDF_F_X942KDF_SIZE, 0), "x942kdf_size"},
     {ERR_PACK(ERR_LIB_KDF, KDF_F_X963KDF_DERIVE, 0), "x963kdf_derive"},
     {0, NULL}
 };
 
 static const ERR_STRING_DATA KDF_str_reasons[] = {
+    {ERR_PACK(ERR_LIB_KDF, 0, KDF_R_BAD_ENCODING), "bad encoding"},
+    {ERR_PACK(ERR_LIB_KDF, 0, KDF_R_BAD_LENGTH), "bad length"},
+    {ERR_PACK(ERR_LIB_KDF, 0, KDF_R_INAVLID_UKM_LEN), "inavlid ukm len"},
     {ERR_PACK(ERR_LIB_KDF, 0, KDF_R_INVALID_DIGEST), "invalid digest"},
     {ERR_PACK(ERR_LIB_KDF, 0, KDF_R_INVALID_ITERATION_COUNT),
     "invalid iteration count"},
     {ERR_PACK(ERR_LIB_KDF, 0, KDF_R_INVALID_KEY_LEN), "invalid key len"},
     {ERR_PACK(ERR_LIB_KDF, 0, KDF_R_INVALID_MAC_TYPE), "invalid mac type"},
     {ERR_PACK(ERR_LIB_KDF, 0, KDF_R_INVALID_SALT_LEN), "invalid salt len"},
+    {ERR_PACK(ERR_LIB_KDF, 0, KDF_R_MISSING_CEK_ALG), "missing cek alg"},
     {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"},
@@ -94,6 +103,8 @@ static const ERR_STRING_DATA KDF_str_reasons[] = {
     {ERR_PACK(ERR_LIB_KDF, 0, KDF_R_NOT_SUPPORTED), "not supported"},
     {ERR_PACK(ERR_LIB_KDF, 0, KDF_R_UNKNOWN_PARAMETER_TYPE),
     "unknown parameter type"},
+    {ERR_PACK(ERR_LIB_KDF, 0, KDF_R_UNSUPPORTED_CEK_ALG),
+    "unsupported cek alg"},
     {ERR_PACK(ERR_LIB_KDF, 0, KDF_R_UNSUPPORTED_MAC_TYPE),
     "unsupported mac type"},
     {ERR_PACK(ERR_LIB_KDF, 0, KDF_R_VALUE_ERROR), "value error"},

crypto/kdf/x942kdf.c

+/*
+ * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright (c) 2019, Oracle and/or its affiliates.  All rights reserved.
+ *
+ * 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 "e_os.h"
+
+#ifndef OPENSSL_NO_CMS
+
+# include <stdlib.h>
+# include <stdarg.h>
+# include <string.h>
+# include <openssl/hmac.h>
+# include <openssl/cms.h>
+# include <openssl/evp.h>
+# include <openssl/kdf.h>
+# include <openssl/x509.h>
+# include <openssl/obj_mac.h>
+# include "internal/cryptlib.h"
+# include "internal/evp_int.h"
+# include "kdf_local.h"
+
+# define X942KDF_MAX_INLEN (1 << 30)
+
+struct evp_kdf_impl_st {
+    const EVP_MD *md;
+    unsigned char *secret;
+    size_t secret_len;
+    int cek_nid;
+    unsigned char *ukm;
+    size_t ukm_len;
+    size_t dkm_len;
+};
+
+/* A table of allowed wrapping algorithms and the associated output lengths */
+static const struct {
+    int nid;
+    size_t keklen; /* size in bytes */
+} kek_algs[] = {
+    { NID_id_smime_alg_CMS3DESwrap, 24 },
+    { NID_id_smime_alg_CMSRC2wrap, 16 },
+    { NID_id_aes128_wrap, 16 },
+    { NID_id_aes192_wrap, 24 },
+    { NID_id_aes256_wrap, 32 },
+    { NID_id_camellia128_wrap, 16 },
+    { NID_id_camellia192_wrap, 24 },
+    { NID_id_camellia256_wrap, 32 }
+};
+
+/* Skip past an ASN1 structure: for OBJECT skip content octets too */
+static int skip_asn1(unsigned char **pp, long *plen, int exptag)
+{
+    int i, tag, xclass;
+    long tmplen;
+    const unsigned char *q = *pp;
+
+    i = ASN1_get_object(&q, &tmplen, &tag, &xclass, *plen);
+    if ((i & 0x80) != 0 || tag != exptag || xclass != V_ASN1_UNIVERSAL)
+        return 0;
+    if (tag == V_ASN1_OBJECT)
+        q += tmplen;
+    *pp = (unsigned char *)q;
+    *plen -= q - *pp;
+    return 1;
+}
+
+/*
+ * Encode the other info structure.
+ *
+ *  RFC2631 Section 2.1.2 Contains the following definition for otherinfo
+ *
+ *  OtherInfo ::= SEQUENCE {
+ *      keyInfo KeySpecificInfo,
+ *      partyAInfo [0] OCTET STRING OPTIONAL,
+ *      suppPubInfo [2] OCTET STRING
+ *  }
+ *
+ *  KeySpecificInfo ::= SEQUENCE {
+ *      algorithm OBJECT IDENTIFIER,
+ *      counter OCTET STRING SIZE (4..4)
+ *  }
+ *
+ * |nid| is the algorithm object identifier.
+ * |keylen| is the length (in bytes) of the generated KEK. It is stored into
+ * suppPubInfo (in bits).
+ * |ukm| is the optional user keying material that is stored into partyAInfo. It
+ * can be NULL.
+ * |ukmlen| is the user keying material length (in bytes).
+ * |der| is the returned encoded data. It must be freed by the caller.
+ * |der_len| is the returned size of the encoded data.
+ * |out_ctr| returns a pointer to the counter data which is embedded inside the
+ * encoded data. This allows the counter bytes to be updated without re-encoding.
+ *
+ * Returns: 1 if successfully encoded, or 0 otherwise.
+ * Assumptions: |der|, |der_len| & |out_ctr| are not NULL.
+ */
+static int x942_encode_otherinfo(int nid, size_t keylen,
+                                 const unsigned char *ukm, size_t ukmlen,
+                                 unsigned char **der, size_t *der_len,
+                                 unsigned char **out_ctr)
+{
+    unsigned char *p, *encoded = NULL;
+    int ret = 0, encoded_len;
+    long tlen;
+    /* "magic" value to check offset is sane */
+    static unsigned char ctr[4] = { 0x00, 0x00, 0x00, 0x01 };
+    X509_ALGOR *ksi = NULL;
+    ASN1_OBJECT *alg_oid = NULL;
+    ASN1_OCTET_STRING *ctr_oct = NULL, *ukm_oct = NULL;
+
+    /* set the KeySpecificInfo - which contains an algorithm oid and counter */
+    ksi = X509_ALGOR_new();
+    alg_oid = OBJ_dup(OBJ_nid2obj(nid));
+    ctr_oct = ASN1_OCTET_STRING_new();
+    if (ksi == NULL
+        || alg_oid == NULL
+        || ctr_oct == NULL
+        || !ASN1_OCTET_STRING_set(ctr_oct, ctr, sizeof(ctr))
+        || !X509_ALGOR_set0(ksi, alg_oid, V_ASN1_OCTET_STRING, ctr_oct))
+        goto err;
+    /* NULL these as they now belong to ksi */
+    alg_oid = NULL;
+    ctr_oct = NULL;
+
+    /* Set the optional partyAInfo */
+    if (ukm != NULL) {
+        ukm_oct = ASN1_OCTET_STRING_new();
+        if (ukm_oct == NULL)
+            goto err;
+        ASN1_OCTET_STRING_set(ukm_oct, (unsigned char *)ukm, ukmlen);
+    }
+    /* Generate the OtherInfo DER data */
+    encoded_len = CMS_SharedInfo_encode(&encoded, ksi, ukm_oct, keylen);
+    if (encoded_len <= 0)
+        goto err;
+
+    /* Parse the encoded data to find the offset of the counter data */
+    p = encoded;
+    tlen = (long)encoded_len;
+    if (skip_asn1(&p, &tlen, V_ASN1_SEQUENCE)
+        && skip_asn1(&p, &tlen, V_ASN1_SEQUENCE)
+        && skip_asn1(&p, &tlen, V_ASN1_OBJECT)
+        && skip_asn1(&p, &tlen, V_ASN1_OCTET_STRING)
+        && CRYPTO_memcmp(p, ctr, 4) == 0) {
+        *out_ctr = p;
+        *der = encoded;
+        *der_len = (size_t)encoded_len;
+        ret = 1;
+    }
+err:
+    if (ret != 1)
+        OPENSSL_free(encoded);
+    ASN1_OCTET_STRING_free(ctr_oct);
+    ASN1_OCTET_STRING_free(ukm_oct);
+    ASN1_OBJECT_free(alg_oid);
+    X509_ALGOR_free(ksi);
+    return ret;
+}
+
+static int x942kdf_hash_kdm(const EVP_MD *kdf_md,
+                            const unsigned char *z, size_t z_len,
+                            const unsigned char *other, size_t other_len,
+                            unsigned char *ctr,
+                            unsigned char *derived_key, size_t derived_key_len)
+{
+    int ret = 0, hlen;
+    size_t counter, out_len, len = derived_key_len;
+    unsigned char mac[EVP_MAX_MD_SIZE];
+    unsigned char *out = derived_key;
+    EVP_MD_CTX *ctx = NULL, *ctx_init = NULL;
+
+    if (z_len > X942KDF_MAX_INLEN || other_len > X942KDF_MAX_INLEN
+            || derived_key_len > X942KDF_MAX_INLEN
+            || derived_key_len == 0) {
+        KDFerr(KDF_F_X942KDF_HASH_KDM, KDF_R_BAD_LENGTH);
+        return 0;
+    }
+
+    hlen = EVP_MD_size(kdf_md);
+    if (hlen <= 0)
+        return 0;
+    out_len = (size_t)hlen;
+
+    ctx = EVP_MD_CTX_create();
+    ctx_init = EVP_MD_CTX_create();
+    if (ctx == NULL || ctx_init == NULL)
+        goto end;
+
+    if (!EVP_DigestInit(ctx_init, kdf_md))
+        goto end;
+
+    for (counter = 1;; counter++) {
+        /* updating the ctr modifies 4 bytes in the 'other' buffer */
+        ctr[0] = (unsigned char)((counter >> 24) & 0xff);
+        ctr[1] = (unsigned char)((counter >> 16) & 0xff);
+        ctr[2] = (unsigned char)((counter >> 8) & 0xff);
+        ctr[3] = (unsigned char)(counter & 0xff);
+
+        if (!EVP_MD_CTX_copy_ex(ctx, ctx_init)
+            || !EVP_DigestUpdate(ctx, z, z_len)
+            || !EVP_DigestUpdate(ctx, other, other_len))
+            goto end;
+        if (len >= out_len) {
+            if (!EVP_DigestFinal_ex(ctx, out, NULL))
+                goto end;
+            out += out_len;
+            len -= out_len;
+            if (len == 0)
+                break;
+        } else {
+            if (!EVP_DigestFinal_ex(ctx, mac, NULL))
+                goto end;
+            memcpy(out, mac, len);
+            break;
+        }
+    }
+    ret = 1;
+end:
+    EVP_MD_CTX_free(ctx);
+    EVP_MD_CTX_free(ctx_init);
+    OPENSSL_cleanse(mac, sizeof(mac));
+    return ret;
+}
+
+static EVP_KDF_IMPL *x942kdf_new(void)
+{
+    EVP_KDF_IMPL *impl;
+
+    if ((impl = OPENSSL_zalloc(sizeof(*impl))) == NULL)
+        KDFerr(KDF_F_X942KDF_NEW, ERR_R_MALLOC_FAILURE);
+    return impl;
+}
+
+static void x942kdf_reset(EVP_KDF_IMPL *impl)
+{
+    OPENSSL_clear_free(impl->secret, impl->secret_len);
+    OPENSSL_clear_free(impl->ukm, impl->ukm_len);
+    memset(impl, 0, sizeof(*impl));
+}
+
+static void x942kdf_free(EVP_KDF_IMPL *impl)
+{
+    x942kdf_reset(impl);
+    OPENSSL_free(impl);
+}
+
+static int x942kdf_set_buffer(va_list args, unsigned char **out, size_t *out_len)
+{
+    const unsigned char *p;
+    size_t len;
+
+    p = va_arg(args, const unsigned char *);
+    len = va_arg(args, size_t);
+    if (len == 0 || p == NULL)
+        return 1;
+
+    OPENSSL_free(*out);
+    *out = OPENSSL_memdup(p, len);
+    if (*out == NULL)
+        return 0;
+
+    *out_len = len;
+    return 1;
+}
+
+static int x942kdf_ctrl(EVP_KDF_IMPL *impl, int cmd, va_list args)
+{
+    const EVP_MD *md;
+    char *alg_str = NULL;
+    size_t i;
+
+    switch (cmd) {
+    case EVP_KDF_CTRL_SET_MD:
+        md = va_arg(args, const EVP_MD *);
+        if (md == NULL)
+            return 0;
+
+        impl->md = md;
+        return 1;
+
+    case EVP_KDF_CTRL_SET_KEY:
+        return x942kdf_set_buffer(args, &impl->secret, &impl->secret_len);
+
+    case EVP_KDF_CTRL_SET_UKM:
+        return x942kdf_set_buffer(args, &impl->ukm, &impl->ukm_len);
+
+    case EVP_KDF_CTRL_SET_CEK_ALG:
+        alg_str = va_arg(args, char *);
+        if (alg_str == NULL)
+            return 0;
+        impl->cek_nid = OBJ_sn2nid(alg_str);
+        for (i = 0; i < (size_t)OSSL_NELEM(kek_algs); ++i) {
+            if (kek_algs[i].nid == impl->cek_nid) {
+                impl->dkm_len = kek_algs[i].keklen;
+                return 1;
+            }
+        }
+        KDFerr(KDF_F_X942KDF_CTRL, KDF_R_UNSUPPORTED_CEK_ALG);
+        return 0;
+
+    default:
+        return -2;
+    }
+}
+
+static int x942kdf_ctrl_str(EVP_KDF_IMPL *impl, const char *type,
+                            const char *value)
+{
+    if (strcmp(type, "digest") == 0)
+        return kdf_md2ctrl(impl, x942kdf_ctrl, EVP_KDF_CTRL_SET_MD, value);
+
+    if (strcmp(type, "secret") == 0 || strcmp(type, "key") == 0)
+         return kdf_str2ctrl(impl, x942kdf_ctrl, EVP_KDF_CTRL_SET_KEY,
+                             value);
+
+    if (strcmp(type, "hexsecret") == 0 || strcmp(type, "hexkey") == 0)
+        return kdf_hex2ctrl(impl, x942kdf_ctrl, EVP_KDF_CTRL_SET_KEY,
+                            value);
+
+    if (strcmp(type, "ukm") == 0)
+        return kdf_str2ctrl(impl, x942kdf_ctrl, EVP_KDF_CTRL_SET_UKM,
+                            value);
+
+    if (strcmp(type, "hexukm") == 0)
+        return kdf_hex2ctrl(impl, x942kdf_ctrl, EVP_KDF_CTRL_SET_UKM,
+                            value);
+
+    if (strcmp(type, "cekalg") == 0)
+        return kdf_str2ctrl(impl, x942kdf_ctrl, EVP_KDF_CTRL_SET_CEK_ALG,
+                            value);
+
+    return -2;
+}
+
+static size_t x942kdf_size(EVP_KDF_IMPL *impl)
+{
+    int len;
+
+    if (impl->md == NULL) {
+        KDFerr(KDF_F_X942KDF_SIZE, KDF_R_MISSING_MESSAGE_DIGEST);
+        return 0;
+    }
+    len = EVP_MD_size(impl->md);
+    return (len <= 0) ? 0 : (size_t)len;
+}
+
+static int x942kdf_derive(EVP_KDF_IMPL *impl, unsigned char *key, size_t keylen)
+{
+    int ret = 0;
+    unsigned char *ctr;
+    unsigned char *der = NULL;
+    size_t der_len = 0;
+
+    if (impl->secret == NULL) {
+        KDFerr(KDF_F_X942KDF_DERIVE, KDF_R_MISSING_SECRET);
+        return 0;
+    }
+    if (impl->md == NULL) {
+        KDFerr(KDF_F_X942KDF_DERIVE, KDF_R_MISSING_MESSAGE_DIGEST);
+        return 0;
+    }
+    if (impl->cek_nid == NID_undef) {
+        KDFerr(KDF_F_X942KDF_DERIVE, KDF_R_MISSING_CEK_ALG);
+        return 0;
+    }
+    if (impl->ukm != NULL && impl->ukm_len >= X942KDF_MAX_INLEN) {
+        /*
+         * Note the ukm length MUST be 512 bits.
+         * For backwards compatibility the old check is being done.
+         */
+        KDFerr(KDF_F_X942KDF_DERIVE, KDF_R_INAVLID_UKM_LEN);
+        return 0;
+    }
+    if (keylen != impl->dkm_len) {
+        KDFerr(KDF_F_X942KDF_DERIVE, KDF_R_MISSING_CEK_ALG);
+        return 0;
+    }
+    /* generate the otherinfo der */
+    if (!x942_encode_otherinfo(impl->cek_nid, impl->dkm_len,
+                               impl->ukm, impl->ukm_len,
+                               &der, &der_len, &ctr)) {
+        KDFerr(KDF_F_X942KDF_DERIVE, KDF_R_BAD_ENCODING);
+        return 0;
+    }
+    ret = x942kdf_hash_kdm(impl->md, impl->secret, impl->secret_len,
+                           der, der_len, ctr, key, keylen);
+    OPENSSL_free(der);
+    return ret;
+}
+
+const EVP_KDF x942_kdf_meth = {
+    EVP_KDF_X942,
+    x942kdf_new,
+    x942kdf_free,
+    x942kdf_reset,
+    x942kdf_ctrl,
+    x942kdf_ctrl_str,
+    x942kdf_size,
+    x942kdf_derive
+};
+
+#endif /* OPENSSL_NO_CMS */

crypto/objects/obj_dat.h

@@ -1084,7 +1084,7 @@ static const unsigned char so[7813] = {
     0x2A,0x81,0x1C,0xCF,0x55,0x01,0x83,0x75,       /* [ 7804] OBJ_SM2_with_SM3 */
 };
 
-#define NUM_NID 1207
+#define NUM_NID 1208
 static const ASN1_OBJECT nid_objs[NUM_NID] = {
     {"UNDEF", "undefined", NID_undef},
     {"rsadsi", "RSA Data Security, Inc.", NID_rsadsi, 6, &so[0]},
@@ -2293,9 +2293,10 @@ static const ASN1_OBJECT nid_objs[NUM_NID] = {
     {"SM2-SM3", "SM2-with-SM3", NID_SM2_with_SM3, 8, &so[7804]},
     {"SSKDF", "sskdf", NID_sskdf},
     {"X963KDF", "x963kdf", NID_x963kdf},
+    {"X942KDF", "x942kdf", NID_x942kdf},
 };
 
-#define NUM_SN 1198
+#define NUM_SN 1199
 static const unsigned int sn_objs[NUM_SN] = {
      364,    /* "AD_DVCS" */
      419,    /* "AES-128-CBC" */
@@ -2596,6 +2597,7 @@ static const unsigned int sn_objs[NUM_SN] = {
      378,    /* "X500algorithms" */
       12,    /* "X509" */
      184,    /* "X9-57" */
+    1207,    /* "X942KDF" */
     1206,    /* "X963KDF" */
      185,    /* "X9cm" */
      125,    /* "ZLIB" */
@@ -3497,7 +3499,7 @@ static const unsigned int sn_objs[NUM_SN] = {
     1093,    /* "x509ExtAdmission" */
 };
 
-#define NUM_LN 1198
+#define NUM_LN 1199
 static const unsigned int ln_objs[NUM_LN] = {
      363,    /* "AD Time Stamping" */
      405,    /* "ANSI X9.62" */
@@ -4695,6 +4697,7 @@ static const unsigned int ln_objs[NUM_LN] = {
      503,    /* "x500UniqueIdentifier" */
      158,    /* "x509Certificate" */
      160,    /* "x509Crl" */
+    1207,    /* "x942kdf" */
     1206,    /* "x963kdf" */
      125,    /* "zlib compression" */
 };

crypto/objects/obj_mac.num

@@ -1204,3 +1204,4 @@ sshkdf		1203
 SM2_with_SM3		1204
 sskdf		1205
 x963kdf		1206
+x942kdf		1207

crypto/objects/objects.txt

@@ -1616,6 +1616,8 @@ secg-scheme 14 3 : dhSinglePass-cofactorDH-sha512kdf-scheme
 
 # NID for SSKDF
                             : SSKDF              : sskdf
+# NID for X942KDF
+                            : X942KDF            : x942kdf
 
 # NID for X963-2001 KDF
                             : X963KDF            : x963kdf

doc/man3/EVP_KDF_CTX.pod

@@ -278,6 +278,7 @@ L<EVP_KDF_HKDF(7)>
 L<EVP_KDF_SS(7)>
 L<EVP_KDF_SSHKDF(7)>
 L<EVP_KDF_X963(7)>
+L<EVP_KDF_X942KDF(7)>
 
 =head1 HISTORY
 

doc/man7/EVP_KDF_X942.pod

+=pod
+
+=head1 NAME
+
+EVP_KDF_X942 - The X9.42-2001 asn1 EVP_KDF implementation
+
+=head1 DESCRIPTION
+
+The EVP_KDF_X942 algorithm implements the key derivation function (X942KDF).
+X942KDF is used by Cryptographic Message Syntax (CMS) for DH KeyAgreement, to
+derive a key using input such as a shared secret key and other info. The other
+info is DER encoded data that contains a 32 bit counter.
+
+=head2 Numeric identity
+
+B<EVP_KDF_X942> is the numeric identity for this implementation; it
+can be used with the EVP_KDF_CTX_new_id() function.
+
+=head2 Supported controls
+
+The supported controls are:
+
+=over 4
+
+=item B<EVP_KDF_CTRL_SET_MD>
+
+This control works as described in L<EVP_KDF_CTX(3)/CONTROLS>.
+
+=item B<EVP_KDF_CTRL_SET_KEY>
+
+This control expects two arguments: C<unsigned char *secret>, C<size_t secretlen>
+
+The shared secret used for key derivation.  This control sets the secret.
+
+EVP_KDF_ctrl_str() takes two type strings for this control:
+
+=over 4
+
+=item "secret"
+
+The value string is used as is.
+
+=item "hexsecret"
+
+The value string is expected to be a hexadecimal number, which will be
+decoded before being passed on as the control value.
+
+=back
+
+=item B<EVP_KDF_CTRL_SET_UKM>
+
+This control expects two arguments: C<unsigned char *ukm>, C<size_t ukmlen>
+
+An optional random string that is provided by the sender called "partyAInfo".
+In CMS this is the user keying material.
+
+EVP_KDF_ctrl_str() takes two type strings for this control:
+
+=over 4
+
+=item "ukm"
+
+The value string is used as is.
+
+=item "hexukm"
+
+The value string is expected to be a hexadecimal number, which will be
+decoded before being passed on as the control value.
+
+=back
+
+=item B<EVP_KDF_CTRL_SET_CEK_ALG>
+
+This control expects one argument: C<char *alg>
+
+The CEK wrapping algorithm name. 
+
+EVP_KDF_ctrl_str() type string: "cekalg"
+
+The value string is used as is.
+
+=back
+
+=head1 NOTES
+
+A context for X942KDF can be obtained by calling:
+
+EVP_KDF_CTX *kctx = EVP_KDF_CTX_new_id(EVP_KDF_X942);
+
+The output length of an X942KDF is specified via the C<keylen>
+parameter to the L<EVP_KDF_derive(3)> function.
+
+=head1 EXAMPLE
+
+This example derives 24 bytes, with the secret key "secret" and a random user
+keying material:
+
+  EVP_KDF_CTX *kctx;
+  unsigned char out[192/8];
+  unsignred char ukm[64];
+
+  if (RAND_bytes(ukm, sizeof(ukm)) <= 0)
+      error("RAND_bytes");
+
+  kctx = EVP_KDF_CTX_new_id(EVP_KDF_X942);
+  if (kctx == NULL)
+      error("EVP_KDF_CTX_new_id");
+
+  if (EVP_KDF_ctrl(kctx, EVP_KDF_CTRL_SET_MD, EVP_sha256()) <= 0)
+      error("EVP_KDF_CTRL_SET_MD");
+  if (EVP_KDF_ctrl(kctx, EVP_KDF_CTRL_SET_KEY, "secret", (size_t)6) <= 0)
+      error("EVP_KDF_CTRL_SET_KEY");
+  if (EVP_KDF_ctrl(kctx, EVP_KDF_CTRL_SET_UKM, ukm, sizeof(ukm)) <= 0)
+      error("EVP_KDF_CTRL_SET_UKM");
+  if (EVP_KDF_ctrl(kctx, EVP_KDF_CTRL_SET_CEK_ALG,
+                   SN_id_smime_alg_CMS3DESwrap) <= 0)
+      error("EVP_KDF_CTRL_SET_CEK_ALG");
+  if (EVP_KDF_derive(kctx, out, sizeof(out)) <= 0)
+      error("EVP_KDF_derive");
+
+  EVP_KDF_CTX_free(kctx);
+
+=head1 CONFORMING TO
+
+RFC 2631
+
+=head1 SEE ALSO
+
+L<EVP_KDF_CTX>,
+L<EVP_KDF_CTX_new_id(3)>,
+L<EVP_KDF_CTX_free(3)>,
+L<EVP_KDF_ctrl(3)>,
+L<EVP_KDF_size(3)>,
+L<EVP_KDF_derive(3)>,
+L<EVP_KDF_CTX(3)/CONTROLS>
+
+=head1 HISTORY
+
+This functionality was added to OpenSSL 3.0.0.
+
+=head1 COPYRIGHT
+
+Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
+
+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
+L<https://www.openssl.org/source/license.html>.
+
+=cut

include/openssl/kdf.h

@@ -25,6 +25,7 @@ extern "C" {
 # define EVP_KDF_SSHKDF     NID_sshkdf
 # define EVP_KDF_SS         NID_sskdf
 # define EVP_KDF_X963       NID_x963kdf
+# define EVP_KDF_X942       NID_x942kdf
 
 EVP_KDF_CTX *EVP_KDF_CTX_new_id(int id);
 EVP_KDF_CTX *EVP_KDF_CTX_new(const EVP_KDF *kdf);
@@ -66,18 +67,20 @@ const EVP_KDF *EVP_get_kdfbyname(const char *name);
 # define EVP_KDF_CTRL_SET_MAC_SIZE           0x14 /* size_t */
 # define EVP_KDF_CTRL_SET_SSKDF_INFO         0x15 /* unsigned char *, size_t */
 # define EVP_KDF_CTRL_SET_PBKDF2_PKCS5_MODE  0x16 /* int */
+# define EVP_KDF_CTRL_SET_UKM                0x17 /* unsigned char *, size_t */
+# define EVP_KDF_CTRL_SET_CEK_ALG            0x18 /* char * */
 # define EVP_KDF_CTRL_SET_SHARED_INFO        EVP_KDF_CTRL_SET_SSKDF_INFO
 
 # define EVP_KDF_HKDF_MODE_EXTRACT_AND_EXPAND  0
 # define EVP_KDF_HKDF_MODE_EXTRACT_ONLY        1
 # define EVP_KDF_HKDF_MODE_EXPAND_ONLY         2
 
-#define EVP_KDF_SSHKDF_TYPE_INITIAL_IV_CLI_TO_SRV 65
-#define EVP_KDF_SSHKDF_TYPE_INITIAL_IV_SRV_TO_CLI 66
+#define EVP_KDF_SSHKDF_TYPE_INITIAL_IV_CLI_TO_SRV     65
+#define EVP_KDF_SSHKDF_TYPE_INITIAL_IV_SRV_TO_CLI     66
 #define EVP_KDF_SSHKDF_TYPE_ENCRYPTION_KEY_CLI_TO_SRV 67
 #define EVP_KDF_SSHKDF_TYPE_ENCRYPTION_KEY_SRV_TO_CLI 68
-#define EVP_KDF_SSHKDF_TYPE_INTEGRITY_KEY_CLI_TO_SRV 69
-#define EVP_KDF_SSHKDF_TYPE_INTEGRITY_KEY_SRV_TO_CLI 70
+#define EVP_KDF_SSHKDF_TYPE_INTEGRITY_KEY_CLI_TO_SRV  69
+#define EVP_KDF_SSHKDF_TYPE_INTEGRITY_KEY_SRV_TO_CLI  70
 
 /**** The legacy PKEY-based KDF API follows. ****/
 

include/openssl/kdferr.h

@@ -64,16 +64,25 @@ int ERR_load_KDF_strings(void);
 # define KDF_F_SSKDF_NEW                                  137
 # define KDF_F_SSKDF_SIZE                                 138
 # define KDF_F_TLS1_PRF_ALG                               111
+# define KDF_F_X942KDF_CTRL                               142
+# define KDF_F_X942KDF_DERIVE                             143
+# define KDF_F_X942KDF_HASH_KDM                           144
+# define KDF_F_X942KDF_NEW                                145
+# define KDF_F_X942KDF_SIZE                               146
 # define KDF_F_X963KDF_DERIVE                             139
 
 /*
  * KDF reason codes.
  */
+# define KDF_R_BAD_ENCODING                               122
+# define KDF_R_BAD_LENGTH                                 123
+# define KDF_R_INAVLID_UKM_LEN                            124
 # define KDF_R_INVALID_DIGEST                             100
 # define KDF_R_INVALID_ITERATION_COUNT                    119
 # define KDF_R_INVALID_KEY_LEN                            120
 # define KDF_R_INVALID_MAC_TYPE                           116
 # define KDF_R_INVALID_SALT_LEN                           121
+# define KDF_R_MISSING_CEK_ALG                            125
 # define KDF_R_MISSING_ITERATION_COUNT                    109
 # define KDF_R_MISSING_KEY                                104
 # define KDF_R_MISSING_MESSAGE_DIGEST                     105
@@ -87,6 +96,7 @@ int ERR_load_KDF_strings(void);
 # define KDF_R_MISSING_XCGHASH                            115
 # define KDF_R_NOT_SUPPORTED                              118
 # define KDF_R_UNKNOWN_PARAMETER_TYPE                     103
+# define KDF_R_UNSUPPORTED_CEK_ALG                        126
 # define KDF_R_UNSUPPORTED_MAC_TYPE                       117
 # define KDF_R_VALUE_ERROR                                108
 # define KDF_R_VALUE_MISSING                              102

include/openssl/obj_mac.h

@@ -5008,6 +5008,10 @@
 #define LN_sskdf                "sskdf"
 #define NID_sskdf               1205
 
+#define SN_x942kdf              "X942KDF"
+#define LN_x942kdf              "x942kdf"
+#define NID_x942kdf             1207
+
 #define SN_x963kdf              "X963KDF"
 #define LN_x963kdf              "x963kdf"
 #define NID_x963kdf             1206

test/evp_kdf_test.c

@@ -407,6 +407,37 @@ static int test_kdf_get_kdf(void)
         && TEST_ptr_eq(kdf1, kdf2);
 }
 
+#ifndef OPENSSL_NO_CMS
+static int test_kdf_x942_asn1(void)
+{
+    int ret;
+    EVP_KDF_CTX *kctx = NULL;
+    unsigned char out[24];
+    /* RFC2631 Section 2.1.6 Test data */
+    static const unsigned char z[] = {
+        0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0c,0x0d,
+        0x0e,0x0f,0x10,0x11,0x12,0x13
+    };
+    static const unsigned char expected[sizeof(out)] = {
+        0xa0,0x96,0x61,0x39,0x23,0x76,0xf7,0x04,
+        0x4d,0x90,0x52,0xa3,0x97,0x88,0x32,0x46,
+        0xb6,0x7f,0x5f,0x1e,0xf6,0x3e,0xb5,0xfb
+    };
+
+    ret =
+        TEST_ptr(kctx = EVP_KDF_CTX_new_id(EVP_KDF_X942))
+        && TEST_int_gt(EVP_KDF_ctrl(kctx, EVP_KDF_CTRL_SET_MD, EVP_sha1()), 0)
+        && TEST_int_gt(EVP_KDF_ctrl(kctx, EVP_KDF_CTRL_SET_KEY, z, sizeof(z)), 0)
+        && TEST_int_gt(EVP_KDF_ctrl(kctx, EVP_KDF_CTRL_SET_CEK_ALG,
+                                    SN_id_smime_alg_CMS3DESwrap), 0)
+        && TEST_int_gt(EVP_KDF_derive(kctx, out, sizeof(out)), 0)
+        && TEST_mem_eq(out, sizeof(out), expected, sizeof(expected));
+
+    EVP_KDF_CTX_free(kctx);
+    return ret;
+}
+#endif /* OPENSSL_NO_CMS */
+
 int setup_tests(void)
 {
     ADD_TEST(test_kdf_get_kdf);
@@ -421,5 +452,8 @@ int setup_tests(void)
     ADD_TEST(test_kdf_ss_kmac);
     ADD_TEST(test_kdf_sshkdf);
     ADD_TEST(test_kdf_x963);
+#ifndef OPENSSL_NO_CMS
+    ADD_TEST(test_kdf_x942_asn1);
+#endif
     return 1;
 }

test/evp_test.c

@@ -1965,7 +1965,14 @@ static int kdf_test_init(EVP_TEST *t, const char *name)
         t->skip = 1;
         return 1;
     }
-#endif
+#endif /* OPENSSL_NO_SCRYPT */
+
+#ifdef OPENSSL_NO_CMS
+    if (strcmp(name, "X942KDF") == 0) {
+        t->skip = 1;
+        return 1;
+    }
+#endif /* OPENSSL_NO_CMS */
 
     kdf = EVP_get_kdfbyname(name);
     if (kdf == NULL)
@@ -2097,7 +2104,14 @@ static int pkey_kdf_test_init(EVP_TEST *t, const char *name)
         t->skip = 1;
         return 1;
     }
-#endif
+#endif /* OPENSSL_NO_SCRYPT */
+
+#ifdef OPENSSL_NO_CMS
+    if (strcmp(name, "X942KDF") == 0) {
+        t->skip = 1;
+        return 1;
+    }
+#endif /* OPENSSL_NO_CMS */
 
     if (kdf_nid == NID_undef)
         kdf_nid = OBJ_ln2nid(name);

test/recipes/30-test_evp_data/evpkdf.txt

@@ -6488,3 +6488,18 @@ Ctrl.digest = digest:SHA512
 Ctrl.hexsecret = hexsecret:0037cd001a0ad87f35ddf58ab355d6144ba2ed0749a7435dab548ba0bfbe723c047e2396b4eef99653412a92c8db74bb5c03063f2eb0525ae87356750ae3676faa86
 Ctrl.hexinfo = hexinfo:eb17da8851c41c7ac6710b1c49f324f8
 Output = 829a28b81f9e95b5f306604067499c07d5944ca034ed130d513951f7143e4e162bad8adb2833e53b8235c293cd2a809659ac7f7e392cba6a543660e5d95070c0c9e6a9cdc38123e22da61bb4cbb6ad6d1a58a069e934fc231bd9fe39a24afcbf322ccea385f0418f3b01c1edd6e7124593a1cefe3e48fcd95daaf72cfd973c59
+
+Title = X9.42 KDF tests (from RFC2631 test vectors)
+
+KDF = X942KDF
+Ctrl.digest = digest:SHA1
+Ctrl.hexsecret = hexsecret:000102030405060708090a0b0c0d0e0f10111213
+Ctrl.cekalg = cekalg:id-smime-alg-CMS3DESwrap
+Output = a09661392376f7044d9052a397883246b67f5f1ef63eb5fb
+
+KDF = X942KDF
+Ctrl.digest = digest:SHA1
+Ctrl.hexsecret = hexsecret:000102030405060708090a0b0c0d0e0f10111213
+Ctrl.cekalg = cekalg:id-smime-alg-CMSRC2wrap
+Ctrl.hexukm = hexukm:0123456789abcdeffedcba98765432010123456789abcdeffedcba98765432010123456789abcdeffedcba98765432010123456789abcdeffedcba9876543201
+Output = 48950c46e0530075403cce72889604e0