This is a Go implementation of the PKCS#11 API. It wraps the library closely, but uses Go idiom where it makes sense. It has been tested with SoftHSM.
-
Make it use a custom configuration file
export SOFTHSM_CONF=$PWD/softhsm.conf -
Then use
softhsmto init itsofthsm --init-token --slot 0 --label test --pin 1234 -
Then use
libsofthsm2.soas the pkcs11 module:p := pkcs11.New("/usr/lib/softhsm/libsofthsm2.so")
A skeleton program would look somewhat like this (yes, pkcs#11 is verbose):
p := pkcs11.New("/usr/lib/softhsm/libsofthsm2.so")
err := p.Initialize()
if err != nil {
panic(err)
}
defer p.Destroy()
defer p.Finalize()
slots, err := p.GetSlotList(true)
if err != nil {
panic(err)
}
session, err := p.OpenSession(slots[0], pkcs11.CKF_SERIAL_SESSION|pkcs11.CKF_RW_SESSION)
if err != nil {
panic(err)
}
defer p.CloseSession(session)
err = p.Login(session, pkcs11.CKU_USER, "1234")
if err != nil {
panic(err)
}
defer p.Logout(session)
p.DigestInit(session, []*pkcs11.Mechanism{pkcs11.NewMechanism(pkcs11.CKM_SHA_1, nil)})
hash, err := p.Digest(session, []byte("this is a string"))
if err != nil {
panic(err)
}
for _, d := range hash {
fmt.Printf("%x", d)
}
fmt.Println()Further examples are included in the tests.
To expose PKCS#11 keys using the crypto.Signer interface, please see github.com/thalesignite/crypto11.
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