diff --git a/tests/suites/test_suite_pkcs7.data b/tests/suites/test_suite_pkcs7.data
index 22dd8a4..5991e40 100644
--- a/tests/suites/test_suite_pkcs7.data
+++ b/tests/suites/test_suite_pkcs7.data
@@ -76,15 +76,15 @@
 
 PKCS7 Signed Data Verify with multiple signers #16
 depends_on:MBEDTLS_SHA256_C
-pkcs7_verify_multiple_signers:"data_files/pkcs7_data_multiple_signed.der":"data_files/pkcs7-rsa-sha256-1.crt":"data_files/pkcs7-rsa-sha256-2.crt":"data_files/pkcs7_data.bin":0:0
+pkcs7_verify:"data_files/pkcs7_data_multiple_signed.der":"data_files/pkcs7-rsa-sha256-1.crt data_files/pkcs7-rsa-sha256-2.crt":"data_files/pkcs7_data.bin":0:0
 
 PKCS7 Signed Data Hash Verify with multiple signers #17
 depends_on:MBEDTLS_SHA256_C
-pkcs7_verify_multiple_signers:"data_files/pkcs7_data_multiple_signed.der":"data_files/pkcs7-rsa-sha256-1.crt":"data_files/pkcs7-rsa-sha256-2.crt":"data_files/pkcs7_data.bin":MBEDTLS_MD_SHA256:0
+pkcs7_verify:"data_files/pkcs7_data_multiple_signed.der":"data_files/pkcs7-rsa-sha256-1.crt data_files/pkcs7-rsa-sha256-2.crt":"data_files/pkcs7_data.bin":MBEDTLS_MD_SHA256:0
 
 PKCS7 Signed Data Hash Verify Fail with multiple signers #18
 depends_on:MBEDTLS_SHA256_C:MBEDTLS_SHA512_C
-pkcs7_verify_multiple_signers:"data_files/pkcs7_data_multiple_signed.der":"data_files/pkcs7-rsa-sha256-1.crt":"data_files/pkcs7-rsa-sha256-2.crt":"data_files/pkcs7_data.bin":MBEDTLS_MD_SHA512:MBEDTLS_ERR_PKCS7_VERIFY_FAIL
+pkcs7_verify:"data_files/pkcs7_data_multiple_signed.der":"data_files/pkcs7-rsa-sha256-1.crt data_files/pkcs7-rsa-sha256-2.crt":"data_files/pkcs7_data.bin":MBEDTLS_MD_SHA512:MBEDTLS_ERR_PKCS7_VERIFY_FAIL
 
 PKCS7 Signed Data Verify Fail Expired Cert #19
 depends_on:MBEDTLS_SHA256_C
diff --git a/tests/suites/test_suite_pkcs7.function b/tests/suites/test_suite_pkcs7.function
index f799c8f..168ac6c 100644
--- a/tests/suites/test_suite_pkcs7.function
+++ b/tests/suites/test_suite_pkcs7.function
@@ -55,96 +55,53 @@
 /* END_CASE */
 
 /* BEGIN_CASE depends_on:MBEDTLS_FS_IO:MBEDTLS_X509_CRT_PARSE_C:MBEDTLS_PKCS1_V15:MBEDTLS_RSA_C */
-void pkcs7_verify(char *pkcs7_file, char *crt, char *filetobesigned, int do_hash_alg,
+void pkcs7_verify(char *pkcs7_file,
+                  char *crt_files,
+                  char *filetobesigned,
+                  int do_hash_alg,
                   int res_expect)
 {
     unsigned char *pkcs7_buf = NULL;
-    size_t buflen;
+    size_t buflen, i, k, cnt = 0, n_crts = 1;
     unsigned char *data = NULL;
+    char **crt_files_arr = NULL;
     unsigned char hash[64];
     struct stat st;
     size_t datalen;
     int res;
     FILE *file;
     const mbedtls_md_info_t *md_info;
-
     mbedtls_pkcs7 pkcs7;
-    mbedtls_x509_crt x509;
+    mbedtls_x509_crt **crts = NULL;
 
-    mbedtls_pkcs7_init(&pkcs7);
-    mbedtls_x509_crt_init(&x509);
 
-    USE_PSA_INIT();
-
-    res = mbedtls_x509_crt_parse_file(&x509, crt);
-    TEST_EQUAL(res, 0);
-
-    res = mbedtls_pk_load_file(pkcs7_file, &pkcs7_buf, &buflen);
-    TEST_EQUAL(res, 0);
-
-    res = mbedtls_pkcs7_parse_der(&pkcs7, pkcs7_buf, buflen);
-    TEST_EQUAL(res, MBEDTLS_PKCS7_SIGNED_DATA);
-
-    res = stat(filetobesigned, &st);
-    TEST_EQUAL(res, 0);
-
-    file = fopen(filetobesigned, "rb");
-    TEST_ASSERT(file != NULL);
-
-    datalen = st.st_size;
-    ASSERT_ALLOC(data, datalen);
-    TEST_ASSERT(data != NULL);
-
-    buflen = fread((void *) data, sizeof(unsigned char), datalen, file);
-    TEST_EQUAL(buflen, datalen);
-    fclose(file);
-
-    if (do_hash_alg) {
-        md_info = mbedtls_md_info_from_type((mbedtls_md_type_t) do_hash_alg);
-
-        res = mbedtls_md(md_info, data, datalen, hash);
-        TEST_EQUAL(res, 0);
-
-        res = mbedtls_pkcs7_signed_hash_verify(&pkcs7, &x509, hash, mbedtls_md_get_size(md_info));
-    } else {
-        res = mbedtls_pkcs7_signed_data_verify(&pkcs7, &x509, data, datalen);
+    /* crt_files are space seprated list */
+    for (i = 0; i < strlen(crt_files); i++) {
+        if (crt_files[i] == ' ') {
+            n_crts++;
+        }
     }
-    TEST_EQUAL(res, res_expect);
 
-exit:
-    mbedtls_x509_crt_free(&x509);
-    mbedtls_free(data);
-    mbedtls_pkcs7_free(&pkcs7);
-    mbedtls_free(pkcs7_buf);
-    USE_PSA_DONE();
-}
-/* END_CASE */
+    ASSERT_ALLOC(crts, sizeof(*crts)*n_crts);
+    ASSERT_ALLOC(crt_files_arr, sizeof(*crt_files_arr)*n_crts);
 
-/* BEGIN_CASE depends_on:MBEDTLS_FS_IO:MBEDTLS_X509_CRT_PARSE_C:MBEDTLS_PKCS1_V15:MBEDTLS_RSA_C */
-void pkcs7_verify_multiple_signers(char *pkcs7_file,
-                                   char *crt1,
-                                   char *crt2,
-                                   char *filetobesigned,
-                                   int do_hash_alg,
-                                   int res_expect)
-{
-    unsigned char *pkcs7_buf = NULL;
-    size_t buflen;
-    unsigned char *data = NULL;
-    unsigned char hash[64];
-    struct stat st;
-    size_t datalen;
-    int res;
-    FILE *file;
-    const mbedtls_md_info_t *md_info;
-
-    mbedtls_pkcs7 pkcs7;
-    mbedtls_x509_crt x509_1;
-    mbedtls_x509_crt x509_2;
+    for (i = 0; i < strlen(crt_files); i++) {
+        for (k = i; k < strlen(crt_files); k++) {
+            if (crt_files[k] == ' ') {
+                break;
+            }
+        }
+        ASSERT_ALLOC(crt_files_arr[cnt], (k-i)+1);
+        crt_files_arr[cnt][k-i] = '\0';
+        memcpy(crt_files_arr[cnt++], crt_files + i, k-i);
+        i = k;
+    }
 
     mbedtls_pkcs7_init(&pkcs7);
-    mbedtls_x509_crt_init(&x509_1);
-    mbedtls_x509_crt_init(&x509_2);
+    for (i = 0; i < n_crts; i++) {
+        ASSERT_ALLOC(crts[i], sizeof(*crts[i]));
+        mbedtls_x509_crt_init(crts[i]);
+    }
 
     USE_PSA_INIT();
 
@@ -154,13 +111,12 @@
     res = mbedtls_pkcs7_parse_der(&pkcs7, pkcs7_buf, buflen);
     TEST_EQUAL(res, MBEDTLS_PKCS7_SIGNED_DATA);
 
-    TEST_EQUAL(pkcs7.signed_data.no_of_signers, 2);
+    TEST_EQUAL(pkcs7.signed_data.no_of_signers, n_crts);
 
-    res = mbedtls_x509_crt_parse_file(&x509_1, crt1);
-    TEST_EQUAL(res, 0);
-
-    res = mbedtls_x509_crt_parse_file(&x509_2, crt2);
-    TEST_EQUAL(res, 0);
+    for (i = 0; i < n_crts; i++) {
+        res = mbedtls_x509_crt_parse_file(crts[i], crt_files_arr[i]);
+        TEST_EQUAL(res, 0);
+    }
 
     res = stat(filetobesigned, &st);
     TEST_EQUAL(res, 0);
@@ -181,21 +137,29 @@
         res = mbedtls_md(md_info, data, datalen, hash);
         TEST_EQUAL(res, 0);
 
-        res = mbedtls_pkcs7_signed_hash_verify(&pkcs7, &x509_1, hash, mbedtls_md_get_size(md_info));
-        TEST_EQUAL(res, res_expect);
-        res = mbedtls_pkcs7_signed_hash_verify(&pkcs7, &x509_2, hash, mbedtls_md_get_size(md_info));
-        TEST_EQUAL(res, res_expect);
+        for (i = 0; i < n_crts; i++) {
+            res =
+                mbedtls_pkcs7_signed_hash_verify(&pkcs7, crts[i], hash,
+                                                 mbedtls_md_get_size(md_info));
+            TEST_EQUAL(res, res_expect);
+        }
     } else {
-        res = mbedtls_pkcs7_signed_data_verify(&pkcs7, &x509_1, data, datalen);
-        TEST_EQUAL(res, res_expect);
-        res = mbedtls_pkcs7_signed_data_verify(&pkcs7, &x509_2, data, datalen);
-        TEST_EQUAL(res, res_expect);
+        for (i = 0; i < n_crts; i++) {
+            res = mbedtls_pkcs7_signed_data_verify(&pkcs7, crts[i], data, datalen);
+            TEST_EQUAL(res, res_expect);
+        }
     }
 
 exit:
-    mbedtls_x509_crt_free(&x509_1);
-    mbedtls_x509_crt_free(&x509_2);
+    for (i = 0; i < n_crts; i++) {
+        mbedtls_x509_crt_free(crts[i]);
+        mbedtls_free(crts[i]);
+        mbedtls_free(crt_files_arr[i]);
+    }
+
     mbedtls_pkcs7_free(&pkcs7);
+    mbedtls_free(crt_files_arr);
+    mbedtls_free(crts);
     mbedtls_free(data);
     mbedtls_free(pkcs7_buf);
     USE_PSA_DONE();