diff --git a/tests/suites/test_suite_x509parse.data b/tests/suites/test_suite_x509parse.data
index 90d6f6172..e2cb85ef3 100644
--- a/tests/suites/test_suite_x509parse.data
+++ b/tests/suites/test_suite_x509parse.data
@@ -1123,37 +1123,100 @@ X509 Certificate ASN1 (TBSCertificate, invalid AlgorithmIdentifier, bad RSASSA-P
 depends_on:MBEDTLS_X509_RSASSA_PSS_SUPPORT
 x509parse_crt:"308196308180a0030201008204deadbeef300d06092a864886f70d01010a3100300c310a30080600130454657374301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092a864886f70d010101050003190030160210ffffffffffffffffffffffffffffffff0202ffff300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_ALG + MBEDTLS_ERR_ASN1_UNEXPECTED_TAG
 
-X509 Certificate ASN1 (TBSCertificate, issuer no set data)
-depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
-x509parse_crt:"301e301ca0030201028204deadbeef300d06092a864886f70d01010b05003000":"":MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_OUT_OF_DATA
+X509 Certificate ASN1 (TBSCertificate, Issuer missing)
+x509parse_crt:"302d3018a0030201008204deadbeef300b06092a864886f70d01010b300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_FORMAT + MBEDTLS_ERR_ASN1_OUT_OF_DATA
 
-X509 Certificate ASN1 (TBSCertificate, issuer no inner seq data)
-depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
-x509parse_crt:"3020301ea0030201028204deadbeef300d06092a864886f70d01010b050030023100":"":MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_OUT_OF_DATA
+X509 Certificate ASN1 (TBSCertificate, invalid Issuer, RDNSequence invalid tag)
+x509parse_crt:"302e3019a0030201008204deadbeef300b06092a864886f70d01010b05300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_FORMAT + MBEDTLS_ERR_ASN1_UNEXPECTED_TAG
 
-X509 Certificate ASN1 (TBSCertificate, issuer no inner set data)
-depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
-x509parse_crt:"30223020a0030201028204deadbeef300d06092a864886f70d01010b0500300431023000":"":MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_OUT_OF_DATA
+X509 Certificate ASN1 (TBSCertificate, invalid Issuer, RDNSequence length missing)
+x509parse_crt:"302e3019a0030201008204deadbeef300b06092a864886f70d01010b30300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_FORMAT + MBEDTLS_ERR_ASN1_OUT_OF_DATA
 
-X509 Certificate ASN1 (TBSCertificate, issuer two inner set datas)
-depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
-x509parse_crt:"30243022a0030201028204deadbeef300d06092a864886f70d01010b05003006310430003000":"":MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_OUT_OF_DATA
+X509 Certificate ASN1 (TBSCertificate, invalid Issuer, RDNSequence invalid length encoding)
+x509parse_crt:"302f301aa0030201008204deadbeef300b06092a864886f70d01010b3085300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_FORMAT + MBEDTLS_ERR_ASN1_INVALID_LENGTH
 
-X509 Certificate ASN1 (TBSCertificate, issuer no oid data)
-depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
-x509parse_crt:"30243022a0030201028204deadbeef300d06092a864886f70d01010b05003006310430020600":"":MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_OUT_OF_DATA
+X509 Certificate ASN1 (TBSCertificate, invalid Issuer, RDNSequence length out of bounds)
+x509parse_crt:"302f301aa0030201008204deadbeef300b06092a864886f70d01010b3001300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_FORMAT + MBEDTLS_ERR_ASN1_OUT_OF_DATA
 
-X509 Certificate ASN1 (TBSCertificate, issuer invalid tag)
+X509 Certificate ASN1 (TBSCertificate, invalid Issuer, RDNSequence empty)
 depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
-x509parse_crt:"302a3028a0030201028204deadbeef300d06092a864886f70d01010b0500300c310a30080600060454657374":"":MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_UNEXPECTED_TAG
+x509parse_crt:"3081893074a0030201028204deadbeef300d06092a864886f70d01010b05003000301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffff300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_OUT_OF_DATA
 
-X509 Certificate ASN1 (TBSCertificate, issuer, no string data)
+X509 Certificate ASN1 (TBSCertificate, invalid Issuer, RDN invalid tag)
 depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
-x509parse_crt:"30253023a0030201028204deadbeef300d06092a864886f70d01010b0500300731053003060013":"":MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_OUT_OF_DATA
+x509parse_crt:"30818a3075a0030201028204deadbeef300d06092a864886f70d01010b0500300100301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092a864886f70d010101050003190030160210ffffffffffffffffffffffffffffffff0202ffff300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_UNEXPECTED_TAG
 
-X509 Certificate ASN1 (TBSCertificate, issuer, no full following string)
+X509 Certificate ASN1 (TBSCertificate, invalid Issuer, RDN invalid length encoding)
 depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
-x509parse_crt:"302b3029a0030201028204deadbeef300d06092a864886f70d01010b0500300d310b3009060013045465737400":"":MBEDTLS_ERR_X509_INVALID_NAME+MBEDTLS_ERR_ASN1_LENGTH_MISMATCH
+x509parse_crt:"30818b3076a0030201028204deadbeef300d06092a864886f70d01010b050030023185301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffff300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_INVALID_LENGTH
+
+X509 Certificate ASN1 (TBSCertificate, invalid Issuer, RDN length out of bounds)
+depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
+x509parse_crt:"30818b3076a0030201028204deadbeef300d06092a864886f70d01010b050030023101301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffff300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_OUT_OF_DATA
+
+X509 Certificate ASN1 (TBSCertificate, invalid Issuer, RDN empty)
+depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
+x509parse_crt:"30818b3076a0030201028204deadbeef300d06092a864886f70d01010b050030023100301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffff300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_OUT_OF_DATA
+
+X509 Certificate ASN1 (TBSCertificate, invalid Issuer, AttributeTypeAndValue invalid tag)
+depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
+x509parse_crt:"30818c3077a0030201028204deadbeef300d06092a864886f70d01010b05003003310100301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092a864886f70d010101050003190030160210ffffffffffffffffffffffffffffffff0202ffff300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_UNEXPECTED_TAG
+
+X509 Certificate ASN1 (TBSCertificate, invalid Issuer, AttributeTypeAndValue invalid length encoding)
+depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
+x509parse_crt:"30818d3078a0030201028204deadbeef300d06092a864886f70d01010b0500300431023085301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffff300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_INVALID_LENGTH
+
+X509 Certificate ASN1 (TBSCertificate, invalid Issuer, AttributeTypeAndValue length out of bounds)
+depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
+x509parse_crt:"30818d3078a0030201028204deadbeef300d06092a864886f70d01010b0500300431023001301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffff300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_OUT_OF_DATA
+
+X509 Certificate ASN1 (TBSCertificate, invalid Issuer, AttributeTypeAndValue empty)
+depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
+x509parse_crt:"30818d3078a0030201028204deadbeef300d06092a864886f70d01010b0500300431023000301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffff300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_OUT_OF_DATA
+
+X509 Certificate ASN1 (TBSCertificate, invalid Issuer, AttributeTypeAndValue type invalid tag)
+depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
+x509parse_crt:"30818e3079a0030201028204deadbeef300d06092a864886f70d01010b050030053103300100301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092a864886f70d010101050003190030160210ffffffffffffffffffffffffffffffff0202ffff300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_UNEXPECTED_TAG
+
+X509 Certificate ASN1 (TBSCertificate, invalid Issuer, AttributeTypeAndValue type invalid no length data)
+depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
+x509parse_crt:"30818e3079a0030201028204deadbeef300d06092a864886f70d01010b050030053103300106301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffff300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_OUT_OF_DATA
+
+X509 Certificate ASN1 (TBSCertificate, invalid Issuer, AttributeTypeAndValue type invalid length encoding)
+depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
+x509parse_crt:"30818f307aa0030201028204deadbeef300d06092a864886f70d01010b05003006310430020685301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffff300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_INVALID_LENGTH
+
+X509 Certificate ASN1 (TBSCertificate, invalid Issuer, AttributeTypeAndValue type length out of bounds )
+depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
+x509parse_crt:"30818f307aa0030201028204deadbeef300d06092a864886f70d01010b05003006310430020601301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffff300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_OUT_OF_DATA
+
+X509 Certificate ASN1 (TBSCertificate, invalid Issuer, AttributeTypeAndValue value missing)
+depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
+x509parse_crt:"30818f307aa0030201028204deadbeef300d06092a864886f70d01010b05003006310430020600301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffff300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_OUT_OF_DATA
+
+X509 Certificate ASN1 (TBSCertificate, invalid Issuer, AttributeTypeAndValue value invalid tag)
+depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
+x509parse_crt:"308190307ba0030201028204deadbeef300d06092a864886f70d01010b0500300731053003060000301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092a864886f70d010101050003190030160210ffffffffffffffffffffffffffffffff0202ffff300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_UNEXPECTED_TAG;
+
+X509 Certificate ASN1 (TBSCertificate, invalid Issuer, AttributeTypeAndValue value length missing)
+depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
+x509parse_crt:"308190307ba0030201028204deadbeef300d06092a864886f70d01010b050030073105300306000c301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffff300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_OUT_OF_DATA
+
+X509 Certificate ASN1 (TBSCertificate, invalid Issuer, AttributeTypeAndValue value invalid length encoding)
+depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
+x509parse_crt:"308191307ca0030201028204deadbeef300d06092a864886f70d01010b050030083106300406000C85301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffff300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_INVALID_LENGTH
+
+X509 Certificate ASN1 (TBSCertificate, invalid Issuer, AttributeTypeAndValue value length out of bounds)
+depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
+x509parse_crt:"308191307ca0030201028204deadbeef300d06092a864886f70d01010b050030083106300406000c01301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffff300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_OUT_OF_DATA
+
+X509 Certificate ASN1 (TBSCertificate, invalid Issuer, AttributeTypeAndValue value length mismatch)
+depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
+x509parse_crt:"308193307ea0030201028204deadbeef300d06092a864886f70d01010b0500300a3108300606000c010000301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffff300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_LENGTH_MISMATCH
+
+X509 Certificate ASN1 (TBSCertificate, invalid Issuer, 2nd AttributeTypeValue empty)
+depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
+x509parse_crt:"308198308182a0030201028204deadbeef300d06092a864886f70d01010b0500300e310c300806000c04546573743000301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffff300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_OUT_OF_DATA
 
 X509 Certificate ASN1 (TBSCertificate, valid issuer, no validity)
 depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C