diff --git a/test/mocks/datafilecollector-testharness/ftps-sftp-server/tls/README.md b/test/mocks/datafilecollector-testharness/ftps-sftp-server/tls/README.md
new file mode 100644
index 0000000..5edfedd
--- /dev/null
+++ b/test/mocks/datafilecollector-testharness/ftps-sftp-server/tls/README.md
@@ -0,0 +1,4 @@
+# To verify the certificate expiration dates:
+
+openssl x509 -enddate -noout -in dfc.crt
+openssl x509 -enddate -noout -in ftp.crt
diff --git a/test/mocks/datafilecollector-testharness/ftps-sftp-server/tls/dfc.crt b/test/mocks/datafilecollector-testharness/ftps-sftp-server/tls/dfc.crt
index 0c00a5a..f747f20 100644
--- a/test/mocks/datafilecollector-testharness/ftps-sftp-server/tls/dfc.crt
+++ b/test/mocks/datafilecollector-testharness/ftps-sftp-server/tls/dfc.crt
@@ -1,19 +1,19 @@
 -----BEGIN CERTIFICATE-----
-MIIDFjCCAf4CCQCfuDKplruMfDANBgkqhkiG9w0BAQsFADBNMQswCQYDVQQGEwJT
+MIIDFjCCAf4CCQCqH10CLXcbUDANBgkqhkiG9w0BAQsFADBNMQswCQYDVQQGEwJT
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-RVNUMQwwCgYDVQQDDANFU1QwHhcNMTkwMjA1MTQwMDQ5WhcNMjAwMjA1MTQwMDQ5
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 CgwBMDEMMAoGA1UECwwDRVNUMQwwCgYDVQQDDANFU1QwggEiMA0GCSqGSIb3DQEB
-AQUAA4IBDwAwggEKAoIBAQCzUSxAWVekRZ22WaDkPDUAK+ihxdoy9iXeakS2K4xR
-biT85qkyHP8kh/KgDTwcH/wJ5nSKxMh135s/EF1rJpLoDW+BR8HpAq/GX2V7N8lV
-E+cDyfLxTA/emptZ+sN6JKXpgwEs7B93EsomjBnu9G8lLHXBUMRywc9rRymivAVO
-DE+UsT6xO/thUgDtiKS4C37jmt0dabPblBcINY6a6dG3V+QsPXaHsKbg4O6y0jZL
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-cuLdKY12amTPQ2lwmTSL2ieGRYHo7OmZ+rPCWIksLbrbAgMBAAEwDQYJKoZIhvcN
-AQELBQADggEBAE/UvlH4tfoMkEs9eTk8WgpyBVcLA2Vo9F1o2a2tvj4iXFUWGMZK
-SJ+j4tnEBgpsIWNpWEOnD00ngOKTLuedFuS62if3QW34Y6Hax6qP+FMStko5jZ4F
-OALZb4GZU5MR0hLSig6aB6zDa1Qe2iVK7Lr7BWG1O+8NsTUP6akIwSQufAllrpJ/
-Ng02CWK6WCaMV5Z1CnVheBw9vf/3ZVh1tm8gRrJQGlcau2/8Mg3M7yThHuDz/rPm
-VbkO6aMRl3C115whBTpd1+/rwg0BzsIQjv56Ab34pWAQc20KsV8WPPDxzZhlZUHD
-yc0HiF1+blZHlzc/ie/07DSklUMKJv63D1s=
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+0TGFh+6xA464/GQmP/AXEuI0tSa2GEgXkhZ0uy6Pmdq+8sD6YcRyVCeqLTq8bqSq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 -----END CERTIFICATE-----
diff --git a/test/mocks/datafilecollector-testharness/ftps-sftp-server/tls/ftp.crt b/test/mocks/datafilecollector-testharness/ftps-sftp-server/tls/ftp.crt
index 2893280..f412d01 100644
--- a/test/mocks/datafilecollector-testharness/ftps-sftp-server/tls/ftp.crt
+++ b/test/mocks/datafilecollector-testharness/ftps-sftp-server/tls/ftp.crt
@@ -1,19 +1,19 @@
 -----BEGIN CERTIFICATE-----
-MIIDFjCCAf4CCQC2aMod08TgbDANBgkqhkiG9w0BAQsFADBNMQswCQYDVQQGEwJT
+MIIDFjCCAf4CCQDaiGveWOXqNjANBgkqhkiG9w0BAQsFADBNMQswCQYDVQQGEwJT
 RTEKMAgGA1UECAwBMDEKMAgGA1UEBwwBMDEKMAgGA1UECgwBMDEMMAoGA1UECwwD
-RVNUMQwwCgYDVQQDDANFU1QwHhcNMTkwMjA1MTQwMDUwWhcNMjAwMjA1MTQwMDUw
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 WjBNMQswCQYDVQQGEwJTRTEKMAgGA1UECAwBMDEKMAgGA1UEBwwBMDEKMAgGA1UE
 CgwBMDEMMAoGA1UECwwDRVNUMQwwCgYDVQQDDANFU1QwggEiMA0GCSqGSIb3DQEB
-AQUAA4IBDwAwggEKAoIBAQDUOXkcBkCqWEXri3TIB1xqd/reBSigsXb+54jRn8/1
-POQGE8BGE54RJd5xurtoLpqeuqgYl9jdLW0uyfZY/ef81K2qWwwmUtzMJmREyJ3x
-2QNoYfJKBbfQKHOQ1nEYBFWKo7nmWxNhJ7iBxEO1QL+jwgohF2gWgrx1KzV6Cu6S
-NX71jWEa3DkYNjc08dn6rMsLfXe8Rgc1EVLxfj+JG/CDnEyKavKmcxLZlk3zD0/i
-CCTaa23aeNCk4qOZ7k5T2Mlt82POlKztjjIBfpyxhoJmO2clRf6jso0BdRQ5r7yd
-4Y+FAUjNbS6A41SuxF8EbSIKtS2UAMUxf1fX74WOKLQPAgMBAAEwDQYJKoZIhvcN
-AQELBQADggEBAIjhg0KMyqg2EFeZOKinmeCEY3f+AfW9AnPc+MMQH7ITPJXXB4hR
-3KVzn4aX19x5b6KjLKtYI+tNHpN9bECWTGPv0yloUSJttyAMmNHYX++9GYHRQoFc
-9RKTzc4tZP1/vVFz0zov9iRKk1uhrEW+B7N4e/WDJpD8QbgiPGwAUsfC9lxJIdpl
-2UKWhA3KazuUgH+w2udh1tDzBKmRpSMS/vFQ6cfUXBfcJYOtCIbVhZwjy1oGc+vX
-PvFQCL6x+n7v12IUjzH6k284UxdqVdKBfPgkr774pFlTioa9fHu/eRBUPGOllePF
-sY9S5Ba0hFWunQyyiT4d34hwDjRKojenULc=
+AQUAA4IBDwAwggEKAoIBAQDSsF7lN/gXpevQpGj8W/3g3h9AVOE83Z49yJAdyIHF
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+v3CHwiY89t1ai149OEywhjsJBJjBoj6fvxfvv46QmK7FuV5Tz0vTL/eB/Z9P7jm+
+twHRz9Ae4s97c6UhbFKafHLrwdMK+yz7qe55tpgthCgoedeSB0gXWIiS7RY18dEN
+JUB/FAt64LfOiKBl0aUbcQOgUinorhCN8gcNTn7Hrn+1AgMBAAEwDQYJKoZIhvcN
+AQELBQADggEBAKVGHkTLe5R/fG/C7prxiknD+QXo9WACcZNVKMuKhpJwQh1iwc4h
+4tq9lj//giyRrt+yPVQF8pRTiIdeewLVyf5O1ugxzb68UtHzVJWD6ooFqGmyPFkm
+WOdLvtgbasGPZvO6y8HZA3kxKgONbYcL0sdtRWpp5b+KTEyvN/50jAtvkB/wlaee
+emgdRdsSVZqg1p8dUfF6j3Alzsuff7YzEZEZPoJKYdb1vikvj21+LdzTDSj5WRno
+PWXQhdTTqN5/TNMZRHJp/UZY6hVmQL+ILqVYGiOPotfxGNUyo+WsKJwZfZnq4adh
+BzdSIIsDCZB34Njz/qjIXh307/seNWWhNFw=
 -----END CERTIFICATE-----
diff --git a/test/mocks/datafilecollector-testharness/ftps-sftp-server/tls/ftp.key b/test/mocks/datafilecollector-testharness/ftps-sftp-server/tls/ftp.key
index 05144b3..f90c781 100644
--- a/test/mocks/datafilecollector-testharness/ftps-sftp-server/tls/ftp.key
+++ b/test/mocks/datafilecollector-testharness/ftps-sftp-server/tls/ftp.key
@@ -1,27 +1,27 @@
 -----BEGIN RSA PRIVATE KEY-----
-MIIEpAIBAAKCAQEA1Dl5HAZAqlhF64t0yAdcanf63gUooLF2/ueI0Z/P9TzkBhPA
-RhOeESXecbq7aC6anrqoGJfY3S1tLsn2WP3n/NStqlsMJlLczCZkRMid8dkDaGHy
-SgW30ChzkNZxGARViqO55lsTYSe4gcRDtUC/o8IKIRdoFoK8dSs1egrukjV+9Y1h
-Gtw5GDY3NPHZ+qzLC313vEYHNRFS8X4/iRvwg5xMimrypnMS2ZZN8w9P4ggk2mtt
-2njQpOKjme5OU9jJbfNjzpSs7Y4yAX6csYaCZjtnJUX+o7KNAXUUOa+8neGPhQFI
-zW0ugONUrsRfBG0iCrUtlADFMX9X1++Fjii0DwIDAQABAoIBAHydKsIL4dikcJn4
-jyANQnS58rJ/cPW6ftb6eVotbtzfXj07R8FeL4h+Jfm93eE0zFG75IxcTVjCHcRF
-jsN+g8Pv1fGb+KxgJ4owWNwSuLuT4+5c5PoWFXLC7ej0IgAqO1hm/veGLwDzY+G+
-rss1M9IiU/ROXC4roiFit8nrtV5fvUj7UzrLLuxoHH8v727ug/Z1U+RIaiTA0b/P
-4x4NTrS7QquvSk8O4IOZRVQKCN9KxOg3BBu8oM6/TOucBtRhfVoOGf9XFQPQctNu
-ORFAoB6OIVY/vdkyS62kD/MGD/MQsq9c58FyjVtWxBFWanhz4syb+kaOqPRi7GA1
-tBGxd+ECgYEA8ILjwiZEKUxz7dKxRJL98327WzH+vh4v2aiiCQF/QqO06edX6OLs
-UQSyhN2+XJsvmW9TxcsLdiMstKR1rEO0vU/LTyE4D8bZ0dVtK6eHJ0wPLJSf0LPL
-7vReFuMHMhKn6X3uLHpws4mibXQXij8hifF2f5AUPXdkwvpi3KqpUXcCgYEA4eQ+
-HaF9G5mh5X6/oNCbHj/nDpKUJSvvoHoJoTxRD/Hn13YTz1OEhleV4QX+QQ/RsPVR
-WC+RI+F9+aL82r1DJ/EA2B3tcupX/s66JQgSAA/mU09GXru7Nf5nJCRJLaeZq/zi
-xDQM3dyuyuOXWE+H80K5c6E4yLAc1pj2SR+0mCkCgYBNGZiLt5qoJpMPTTh4hCqW
-sNqrzGYeaizquI1hF7LFGRe41+mthXk+K6RSxYbtxu3GYRLY2FNPRs1hB0uVsoqx
-GXBSaJLBM/zFsIZztRu1dEN1BhwJWmnoqzuyWIsI+UQMrMr6RTH1zAxezBVzwvMs
-dlSHZhem8KxDeOLSXH801wKBgQCsO2vFCekrDyOqqM6RXhy3nr+ck9RS10IY2JPZ
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-k6Gt3HGgGbSs7HScgYHAw83r+nsn8GQydwFMdEPtvEQb+F/O8ZQW/tkd43HJic1X
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-e2oAmyPSRHtGXhnT1rqGHu7pvMTCqrhjdW6/YqZvHiAnM05iEBmjeQ==
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+eA9dhbbawaEmIReWtNKvo+Q2kxn+WcLIL6jWaASsJH4cnnRl58IYcUv8cb6o6G34
+nTkWuhXm5XBUupacr8lqz5bXtoRBU7BcSnqXd20dTR5QEHU5Rrg/uw==
 -----END RSA PRIVATE KEY-----