Hi !
Are you sure your certificate isn't already in PEM format?
How can I verify which format the certificate is in ? # openssl x509 -in somecertificate.cer -text Certificate: Data: Version: 3 (0x2) Serial Number: 69:4c:8a:74:b7:45:cd:7f:cd:47:71:b8:c0:f2:60:6a Signature Algorithm: sha1WithRSAEncryption Issuer: C=ZA, ST=FOR TESTING PURPOSES ONLY, O=Thawte Certification, OU=TEST TEST TEST, CN=Thawte Test CA Root Validity Not Before: Jun 27 20:00:54 2006 GMT Not After : Jul 18 20:00:54 2006 GMT Subject: C=XX, ST=XXXXX, L=XXXXX, O=XXXXXX, OU=XXXXXX, CN=XXXXXXXX Subject Public Key Info: Public Key Algorithm: rsaEncryption RSA Public Key: (1024 bit) Modulus (1024 bit): 00:ce:0c:00:a5:88:d5:f7:f2:b8:c5:7d:f3:9d:0a: 0e:44:28:ee:fc:b0:78:c9:d0:1e:f2:cf:cf:2f:cc: 6f:bc:87:06:f4:eb:aa:a3:3d:8d:d5:d8:60:54:8e: 78:c3:2b:a5:fc:f5:fa:97:ea:d3:17:20:00:07:62: 25:1a:8f:cf:41:9e:ba:59:a7:c3:75:a0:ae:4c:9c: 69:4f:52:c3:7c:51:d7:2e:70:63:1e:d5:79:97:d7: b3:81:94:d8:4f:cf:f1:5c:9c:ab:c5:e2:f5:82:70: 34:f0:8b:e8:70:a0:ce:27:b4:26:fc:16:b5:6c:64: fd:f5:99:94:f8:ad:63:a7:41 Exponent: 65537 (0x10001) X509v3 extensions: X509v3 Basic Constraints: critical CA:FALSE X509v3 Extended Key Usage: TLS Web Server Authentication, TLS Web Client Authentication X509v3 CRL Distribution Points: URI:http://crl.thawte.com/ThawtePremiumServerCA.crl Authority Information Access: OCSP - URI:http://ocsp.thawte.com