diff --git a/tests/suites/test_suite_x509parse.data b/tests/suites/test_suite_x509parse.data
index cb66398d6..f2b746cfb 100644
--- a/tests/suites/test_suite_x509parse.data
+++ b/tests/suites/test_suite_x509parse.data
@@ -1752,6 +1752,38 @@ X509 Certificate ASN1 (invalid SignatureAlgorithm, not the same as SignatureAlgo
 depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
 x509parse_crt:"3081bd3081a7a0030201028204deadbeef300d06092a864886f70d01010b0500300c310a30080600130454657374301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffffa100a200a321301f301d0603551d11041630148208666f6f2e7465737482086261722e74657374300d06092a864886f70d01010a0500030200ff":"":MBEDTLS_ERR_X509_SIG_MISMATCH
 
+X509 Certificate ASN1 (Signature missing)
+depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
+x509parse_crt:"3081b93081a7a0030201028204deadbeef300d06092a864886f70d01010b0500300c310a30080600130454657374301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffffa100a200a321301f301d0603551d11041630148208666f6f2e7465737482086261722e74657374300d06092a864886f70d01010b0500":"":MBEDTLS_ERR_X509_INVALID_SIGNATURE + MBEDTLS_ERR_ASN1_OUT_OF_DATA
+
+X509 Certificate ASN1 (invalid Signature, bad tag)
+depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
+x509parse_crt:"3081ba3081a7a0030201028204deadbeef300d06092a864886f70d01010b0500300c310a30080600130454657374301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092a864886f70d010101050003190030160210ffffffffffffffffffffffffffffffff0202ffffa100a200a321301f301d0603551d11041630148208666f6f2e7465737482086261722e74657374300d06092a864886f70d01010b050000":"":MBEDTLS_ERR_X509_INVALID_SIGNATURE + MBEDTLS_ERR_ASN1_UNEXPECTED_TAG
+
+X509 Certificate ASN1 (invalid Signature, length missing)
+depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
+x509parse_crt:"3081ba3081a7a0030201028204deadbeef300d06092a864886f70d01010b0500300c310a30080600130454657374301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffffa100a200a321301f301d0603551d11041630148208666f6f2e7465737482086261722e74657374300d06092a864886f70d01010b050003":"":MBEDTLS_ERR_X509_INVALID_SIGNATURE + MBEDTLS_ERR_ASN1_OUT_OF_DATA
+
+X509 Certificate ASN1 (invalid Signature, invalid length encoding)
+depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
+x509parse_crt:"3081bb3081a7a0030201028204deadbeef300d06092a864886f70d01010b0500300c310a30080600130454657374301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffffa100a200a321301f301d0603551d11041630148208666f6f2e7465737482086261722e74657374300d06092a864886f70d01010b05000385":"":MBEDTLS_ERR_X509_INVALID_SIGNATURE + MBEDTLS_ERR_ASN1_INVALID_LENGTH
+
+X509 Certificate ASN1 (invalid Signature, length out of bounds)
+depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
+x509parse_crt:"3081bb3081a7a0030201028204deadbeef300d06092a864886f70d01010b0500300c310a30080600130454657374301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffffa100a200a321301f301d0603551d11041630148208666f6f2e7465737482086261722e74657374300d06092a864886f70d01010b05000301":"":MBEDTLS_ERR_X509_INVALID_SIGNATURE + MBEDTLS_ERR_ASN1_OUT_OF_DATA
+
+X509 Certificate ASN1 (invalid Signature, empty)
+depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
+x509parse_crt:"3081bb3081a7a0030201028204deadbeef300d06092a864886f70d01010b0500300c310a30080600130454657374301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffffa100a200a321301f301d0603551d11041630148208666f6f2e7465737482086261722e74657374300d06092a864886f70d01010b05000300":"":MBEDTLS_ERR_X509_INVALID_SIGNATURE + MBEDTLS_ERR_ASN1_INVALID_DATA
+
+X509 Certificate ASN1 (invalid Signature, invalid data)
+depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
+x509parse_crt:"3081bc3081a7a0030201028204deadbeef300d06092a864886f70d01010b0500300c310a30080600130454657374301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffffa100a200a321301f301d0603551d11041630148208666f6f2e7465737482086261722e74657374300d06092a864886f70d01010b0500030100":"":MBEDTLS_ERR_X509_INVALID_SIGNATURE + MBEDTLS_ERR_ASN1_INVALID_DATA
+
+X509 Certificate ASN1 (invalid Signature, length mismatch)
+depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
+x509parse_crt:"3081be3081a7a0030201028204deadbeef300d06092a864886f70d01010b0500300c310a30080600130454657374301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffffa100a200a321301f301d0603551d11041630148208666f6f2e7465737482086261722e74657374300d06092a864886f70d01010b0500030200ff00":"":MBEDTLS_ERR_X509_INVALID_FORMAT + MBEDTLS_ERR_ASN1_LENGTH_MISMATCH
+
 X509 Certificate ASN1 (well-formed)
 depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
 x509parse_crt:"308196308180a0030201008204deadbeef300d06092a864886f70d01010b0500300c310a30080600130454657374301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092a864886f70d010101050003190030160210ffffffffffffffffffffffffffffffff0202ffff300d06092a864886f70d01010b0500030200ff":"cert. version     \: 1\nserial number     \: DE\:AD\:BE\:EF\nissuer name       \: ?\?=Test\nsubject name      \: ?\?=Test\nissued  on        \: 2009-01-01 00\:00\:00\nexpires on        \: 2009-12-31 23\:59\:59\nsigned using      \: RSA with SHA-256\nRSA key size      \: 128 bits\n":0