diff --git a/crypto/cmp/cmp_asn.c b/crypto/cmp/cmp_asn.c
index 5f4999a400781a..cdedabba80222e 100644
--- a/crypto/cmp/cmp_asn.c
+++ b/crypto/cmp/cmp_asn.c
@@ -69,17 +69,14 @@ IMPLEMENT_ASN1_FUNCTIONS(OSSL_CMP_KEMCIPHERTEXTINFO)
 
 ASN1_SEQUENCE(OSSL_CMP_KEMOTHERINFO) = {
     ASN1_SEQUENCE_OF(OSSL_CMP_KEMOTHERINFO, staticString, ASN1_UTF8STRING),
-    ASN1_EXP_OPT(OSSL_CMP_KEMOTHERINFO, transactionID, ASN1_OCTET_STRING, 0),
-    ASN1_EXP_OPT(OSSL_CMP_KEMOTHERINFO, senderNonce, ASN1_OCTET_STRING, 1),
-    ASN1_EXP_OPT(OSSL_CMP_KEMOTHERINFO, recipNonce, ASN1_OCTET_STRING, 2),
-    ASN1_SIMPLE(OSSL_CMP_KEMOTHERINFO, len, ASN1_INTEGER),
-    ASN1_SIMPLE(OSSL_CMP_KEMOTHERINFO, mac, X509_ALGOR),
-    ASN1_SIMPLE(OSSL_CMP_KEMOTHERINFO, ct, ASN1_OCTET_STRING)
+    ASN1_SIMPLE(OSSL_CMP_KEMOTHERINFO, transactionID, ASN1_OCTET_STRING),
+    ASN1_EXP_OPT(OSSL_CMP_KEMOTHERINFO, kemContext, ASN1_OCTET_STRING, 0),
 } ASN1_SEQUENCE_END(OSSL_CMP_KEMOTHERINFO)
 IMPLEMENT_ASN1_FUNCTIONS(OSSL_CMP_KEMOTHERINFO)
 
 ASN1_SEQUENCE(OSSL_CMP_KEMBMPARAMETER) = {
     ASN1_SIMPLE(OSSL_CMP_KEMBMPARAMETER, kdf, X509_ALGOR),
+    ASN1_EXP_OPT(OSSL_CMP_KEMBMPARAMETER, kemContext, ASN1_OCTET_STRING, 0),
     ASN1_SIMPLE(OSSL_CMP_KEMBMPARAMETER, len, ASN1_INTEGER),
     ASN1_SIMPLE(OSSL_CMP_KEMBMPARAMETER, mac, X509_ALGOR)
 } ASN1_SEQUENCE_END(OSSL_CMP_KEMBMPARAMETER)
@@ -304,19 +301,14 @@ int ossl_cmp_kem_KemOtherInfo_new(OSSL_CMP_CTX *ctx,
         goto err;
 
     kemOtherInfo->transactionID = ctx->transactionID;
-    kemOtherInfo->senderNonce = ossl_cmp_ctx_get_kem_senderNonce(ctx);
-    kemOtherInfo->recipNonce = ossl_cmp_ctx_get_kem_recipNonce(ctx);
-
-    if (!ASN1_INTEGER_set(kemOtherInfo->len, ctx->kem_ssklen)
-        || !X509_ALGOR_set0(kemOtherInfo->mac, OBJ_nid2obj(NID_hmacWithSHA256),
-                            V_ASN1_UNDEF, NULL))
-        goto err;
 
+#if 0
+    /*setting kemContext with ct for testing*/
     if (ctx->kem_ct != NULL
-            && !ossl_cmp_asn1_octet_string_set1(&kemOtherInfo->ct,
+            && !ossl_cmp_asn1_octet_string_set1(&kemOtherInfo->kemContext,
                                                 ctx->kem_ct))
         goto err;
-
+#endif
     *out = NULL;
     if ((*len = i2d_OSSL_CMP_KEMOTHERINFO(kemOtherInfo, out)) <= 0)
         goto err;
@@ -325,8 +317,6 @@ int ossl_cmp_kem_KemOtherInfo_new(OSSL_CMP_CTX *ctx,
 
  err:
     kemOtherInfo->transactionID = NULL;
-    kemOtherInfo->senderNonce = NULL;
-    kemOtherInfo->recipNonce = NULL;
     OSSL_CMP_KEMOTHERINFO_free(kemOtherInfo);
     return ret;
 }
diff --git a/crypto/cmp/cmp_local.h b/crypto/cmp/cmp_local.h
index 60e95a4c3efcb1..b09930a2563a4d 100644
--- a/crypto/cmp/cmp_local.h
+++ b/crypto/cmp/cmp_local.h
@@ -249,35 +249,29 @@ DECLARE_ASN1_FUNCTIONS(OSSL_CMP_KEMCIPHERTEXTINFO)
 
 /*
  * KemOtherInfo ::= SEQUENCE {
- *    staticString      PKIFreeText,
- *    transactionID [0] OCTET STRING     OPTIONAL,
- *    senderNonce   [1] OCTET STRING     OPTIONAL,
- *    recipNonce    [2] OCTET STRING     OPTIONAL,
- *    len               INTEGER (1..MAX),
- *    mac               AlgorithmIdentifier{MAC-ALGORITHM, {...}}
- *    ct                OCTET STRING
- * }
+ *  staticString      PKIFreeText,
+ *  transactionID     OCTET STRING,
+ *  kemContext    [0] OCTET STRING OPTIONAL
+  }
  */
 struct ossl_cmp_KemOtherInfo_st {
     OSSL_CMP_PKIFREETEXT *staticString;
     ASN1_OCTET_STRING *transactionID;
-    ASN1_OCTET_STRING *senderNonce;
-    ASN1_OCTET_STRING *recipNonce;
-    ASN1_INTEGER *len;
-    X509_ALGOR *mac;
-    ASN1_OCTET_STRING *ct;
+    ASN1_OCTET_STRING *kemContext;
 } /* OSSL_CMP_KEMOTHERINFO */;
 DECLARE_ASN1_FUNCTIONS(OSSL_CMP_KEMOTHERINFO)
 
 /*
  * KemBMParameter ::= SEQUENCE {
  *    kdf      AlgorithmIdentifier{KEY-DERIVATION, {...}},
+ *    kemContext   [0] OCTET STRING OPTIONAL,
  *    len      INTEGER (1..MAX),
  *    mac      AlgorithmIdentifier{MAC-ALGORITHM, {...}}
  * }
  */
 typedef struct ossl_cmp_KemBMParameter_st {
     X509_ALGOR *kdf;
+    ASN1_OCTET_STRING *kemContext;
     ASN1_INTEGER *len;
     X509_ALGOR *mac;
 } OSSL_CMP_KEMBMPARAMETER;