x509 certificate public key bit size

[Paul van Brouwershaven]

I'm try to get the bit size of the public key part of a certificate but for some reason this is not listed by default in the go x509 Certificate struct.

http://golang.org/pkg/crypto/x509/#Certificate

Does anyone know an other (easy) way to calculate the key size of a certificate?

Thanks,

Paul

[Shane Hansen]

There's no trivial way to do this that I'm aware of.

The currently supported types for Certifice.PublicKey are

crypto.rsa.PublicKey and crypto.dsa.PublicKey.

You can look at the PublicKey.N.BitLen() field which is a big.Int to determine size.

Seems like a method that would be worth adding to the Certificate struct, or maybe there's a simpler way?

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