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+# PKCS#11 [![Build Status](https://travis-ci.org/miekg/pkcs11.png?branch=master)](https://travis-ci.org/miekg/pkcs11) [![GoDoc](https://img.shields.io/badge/godoc-reference-blue.svg)](http://godoc.org/github.com/miekg/pkcs11)
+
+This is a Go implementation of the PKCS#11 API. It wraps the library closely, but uses Go idiom were
+it makes sense. It has been tested with SoftHSM.
+
+## SoftHSM
+
+ *  Make it use a custom configuration file `export SOFTHSM_CONF=$PWD/softhsm.conf`
+
+ *  Then use `softhsm` to init it
+
+    ~~~
+    softhsm --init-token --slot 0 --label test --pin 1234
+    ~~~
+
+ *  Then use `libsofthsm.so` as the pkcs11 module:
+
+    ~~~ go
+    p := pkcs11.New("/usr/lib/softhsm/libsofthsm.so")
+    ~~~
+
+## Examples
+
+A skeleton program would look somewhat like this (yes, pkcs#11 is verbose):
+
+~~~ go
+p := pkcs11.New("/usr/lib/softhsm/libsofthsm.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](https://golang.org/pkg/crypto/#Signer),
+please see [github.com/thalesignite/crypto11](https://github.com/thalesignite/crypto11).