Configurar ssl sobre apache en linux

[cointreau17]

Buenas

Estoy intentando crear mi propio certificado con openssl, en teoría se ha creado correctamente pero cuando intento configurar apache el log me devuelve este error:

[Tue Jun 23 18:35:18.911154 2015] [ssl:error] [pid 4738] AH02578: Init: Unable to read pass phrase [Hint: key introduced or changed before restart?]
[Tue Jun 23 18:35:18.911849 2015] [ssl:error] [pid 4738] SSL Library Error: error:0D0680A8:asn1 encoding routines:ASN1_CHECK_TLEN:wrong tag
[Tue Jun 23 18:35:18.911864 2015] [ssl:error] [pid 4738] SSL Library Error: error:0D08303A:asn1 encoding routines:ASN1_TEMPLATE_NOEXP_D2I:nested asn1 error
[Tue Jun 23 18:35:18.911873 2015] [ssl:error] [pid 4738] SSL Library Error: error:0D0680A8:asn1 encoding routines:ASN1_CHECK_TLEN:wrong tag
[Tue Jun 23 18:35:18.911883 2015] [ssl:error] [pid 4738] SSL Library Error: error:0D07803A:asn1 encoding routines:ASN1_ITEM_EX_D2I:nested asn1 error (Type=RSA)
[Tue Jun 23 18:35:18.911894 2015] [ssl:error] [pid 4738] SSL Library Error: error:04093004:rsa routines:OLD_RSA_PRIV_DECODE:RSA lib
[Tue Jun 23 18:35:18.911903 2015] [ssl:error] [pid 4738] SSL Library Error: error:0D0680A8:asn1 encoding routines:ASN1_CHECK_TLEN:wrong tag
[Tue Jun 23 18:35:18.911913 2015] [ssl:error] [pid 4738] SSL Library Error: error:0D07803A:asn1 encoding routines:ASN1_ITEM_EX_D2I:nested asn1 error (Type=PKCS8_PRIV_KEY_INFO)
[Tue Jun 23 18:35:18.911932 2015] [ssl:emerg] [pid 4738] AH02311: Fatal error initialising mod_ssl, exiting. See /opt/lampp/logs/error_log for more information
[Tue Jun 23 18:35:18.911938 2015] [ssl:emerg] [pid 4738] AH02564: Failed to configure encrypted (?) private key localhost/pruebas/:443:0, check /home/user/Documentos/claveprivada.pem
AH00016: Configuration Failed

Alquien puede ayudarme?

Muchas gracias
Saludos