test/pkcs7: Add test for wrong hash alg

Add a test to verify a hash which uses a different digest
algorithm than the one specified in the pkcs7.

Signed-off-by: Nick Child <nick.child@ibm.com>
diff --git a/tests/suites/test_suite_pkcs7.data b/tests/suites/test_suite_pkcs7.data
index 571d5ad..3f5b414 100644
--- a/tests/suites/test_suite_pkcs7.data
+++ b/tests/suites/test_suite_pkcs7.data
@@ -81,3 +81,8 @@
 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 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
+