[strongSwan] loading private key file is failing with charon, when trying to establish IPsec tunnel with certifiactes.

[Andreas Steffen]

Hi Bhargav,

The private key that you are trying to load is a PKCS#8 file,
a format being used by openssl 1.x.x. PKCS#8 support was introduced
with strongswan 4.6.2. So as a workaround either upgrade to a newer
strongSwan version or convert the private key from PKCS#8 to PKCS#1
using the following openssl command:

openssl pkcs8 -nocrypt -in key8.pem -out key1.pem

Regards

Andreas

On 05/31/2013 08:12 AM, bhargav p wrote:
> Hi,
> 
> I am trying to establish the IPsec tunnel with certificates with charon.
> 
> From the logs the below error is thrown:
> 
> L0 - RSAPrivateKey:
>  charon: 00[LIB] L1 - version:
>  charon: 00[LIB] => 1 bytes @ 0x1200ac406
>  charon: 00[LIB]    0: 00                                               .
>  charon: 00[LIB] L1 - modulus: ASN1 tag 0x02 expected, but is 0x30
>  charon: 00[LIB] => 15 bytes @ 0x1200ac407
>  charon: 00[LIB]    0: 30 0D 06 09 2A 86 48 86 F7 0D 01 01 01 05 00    
> 0...*.H........
> charon: 00[LIB] building CRED_PRIVATE_KEY - RSA failed, tried 5 builders
>  charon: 00[CFG]   loading private key from
> '/etc/ipsec/certs/ipsec.d//private/defaultPrivateKey.pem' failed
>  charon: 00[LIB] plugin 'stroke': loaded successfully
>  charon: 00[LIB] plugin 'kernel-netlink': loaded successfully
>  charon: 00[DMN] loaded plugins: openssl random pem x509 pubkey pkcs1
> hmac xcbc stroke kernel-netlink
> May 31 13:32:21.117438 info CLA-0 charon: 00[JOB] spawning 16 worker threads
> charon: 07[LIB]   file content is not binary ASN.1
> 
> Can some one help me here.
> 
> Using strongswan version:4.5.3
> 
> cat defaultPrivateKey.pem 
> -----BEGIN PRIVATE KEY-----
> MIIEvQIBADANBgkqhkiG9w0BAQEFAASCBKcwggSjAgEAAoIBAQCyoayXeOOMy5rE
> tqdP56GJnNP29Ul1OSk7W8BS9Y6yZb0dlcL4NWhg4xbPk4zBZKR1FUsjKYUcNogE
> 33G5/muESiPzLWE8CeMGf6WrXH40W99kpIho204WsIJlLG3OCF2UQCXA/FGYJTqe
> ODKQzea0oxjEHzLdSxpYaCAggPeBuiZ5+2kf+hE+d1qxOYheFM0JGkduXr2F9I+f
> VMDAXk64uCG8v7z5DlTrYhgDr3WhRkzv+STIDuAvqiFaV26bpa7lqmpEcO5nrklF
> 3jJ8cDWSn+l390TIdg8pn4bJTyyfs9cYtpDpn0fndvuFvncbGAT+b5EifoUES6J9
> mmIBHioRAgMBAAECggEBAJZrxF2NI/jE3yA1OzDzObkbAfcc2G3I46qjeZGiTDZ3
> q8fE+/htaOblc6j6c/XKnR4m/y2t4fQ/C00nJ6pazwkIMbuuBAo9vRoU1Vo2ueO3
> Vad3UZMS0XAT1MoDnrd3ne2gEuquzrrS5sijRBlh+Zs1GD7Wkst8WcQGcr9MOp/W
> y9B+gOMb8QcoJkiyenKIGstyFFLUd8IWtzLpPVKYABfjw+qIFmZno2+Z3uWnE6jM
> h8J7sWFXQyBtcylhd9jxGpPn9gPkt4v9kWMe2+Pd7vCbRMQrVGx3hIuUSaLpeN11
> hLsCJGaSY+y4wd5P5cbL6/OveU0eEgUlQ5LYx5DngFECgYEA4CjtDmrAXnMZSbAW
> uriD9IjsEhBwY0xYQXteNq216NYAO27e+Hl6seXG1AIPKxpbA+y9ZwOQhDA9adCV
> fZHzd0k7QqVzEgyIo9gNa30zGIaPBG3DYKFK7bxg16MUt8K8HZKxCDG4b1gKjHJq
> 7G+6ANM5k3P22gLFgsgF8D34i8UCgYEAzAE2R0qzjcDa6+6cG0f9aikITl2d2TMZ
> pMC0hhy1YiSD7940QtxjnMD5dCGWYGnQhYLum78jMP49NpJcDfHfJC8QNp5vrPjq
> dVXqWdDDf+f64ck6GYvVs+7DzCQHcLdmruvmId5p73TrSaZIpRDA8aXizJr9XfDl
> sXRUSJlqjd0CgYB5pfwwLMLE/xWkJcnP/z6tQHlMvFshqFblAnx4lAD6oNhzaJHc
> qqBpVtd2Sr/Mlnr6QEnxU7/j3QIXILlf8gr8m2Nrobo2+1JUCHYP9Vv7XVrT/nVf
> RWkSZ37ux3QA3c+VBPzKA6Gh21euLJHWSjPZKsg+O1qlqYdimAaRADCYOQKBgC1o
> G6e0ldB4W4HmAzMDTAFkDqg6qBafDBcimUu8ehbVH9S09ZboLPfH7/4MN8dP5gzB
> ftCFs5SFEiTiYMDt1AfevdIaY6rxYGYrcFT7ZXhDrxCwVFE5UaCSBVybrFhHSgCn
> Gvrw4U1eDby/2S18VCW1EY0O9lQBeW6NAPGDzDa1AoGAFGpXEPZfEV0RbZO7dLMN
> O3x1Oz75HGdkLot3Cvc6RuLr8uxnQzGPTQ3FcNMnlLHnjhdmB+9rMpZlD3gmxKVv
> 73UfJd4+oP5VfWrAEcMAZCXrJsp1TjECwAp4Qrvv+aJZI+c9qYhRhuoTMHG+NLMK
> GMAIlLWjiZrkCZEtW15hD+o=
> -----END PRIVATE KEY-----
> 
> --Bhargav 
> 
> 
> 
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-- 
======================================================================
Andreas Steffen                         andreas.steffen at strongswan.org
strongSwan - the Linux VPN Solution!                www.strongswan.org
Institute for Internet Technologies and Applications
University of Applied Sciences Rapperswil
CH-8640 Rapperswil (Switzerland)
===========================================================[ITA-HSR]==

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