DockerCLI/vendor/github.com/miekg/pkcs11/pkcs11.go

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// Copyright 2013 Miek Gieben. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package pkcs11 is a wrapper around the PKCS#11 cryptographic library.
package pkcs11
// It is *assumed*, that:
//
// * Go's uint size == PKCS11's CK_ULONG size
// * CK_ULONG never overflows an Go int
/*
#cgo windows CFLAGS: -DREPACK_STRUCTURES
#cgo windows LDFLAGS: -lltdl
#cgo linux LDFLAGS: -lltdl -ldl
#cgo darwin CFLAGS: -I/usr/local/share/libtool
#cgo darwin LDFLAGS: -lltdl -L/usr/local/lib/
#cgo openbsd CFLAGS: -I/usr/local/include/
#cgo openbsd LDFLAGS: -lltdl -L/usr/local/lib/
#cgo freebsd CFLAGS: -I/usr/local/include/
#cgo freebsd LDFLAGS: -lltdl -L/usr/local/lib/
#cgo LDFLAGS: -lltdl
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ltdl.h>
#include <unistd.h>
#include "pkcs11go.h"
struct ctx {
lt_dlhandle handle;
CK_FUNCTION_LIST_PTR sym;
};
// New initializes a ctx and fills the symbol table.
struct ctx *New(const char *module)
{
if (lt_dlinit() != 0) {
return NULL;
}
CK_C_GetFunctionList list;
struct ctx *c = calloc(1, sizeof(struct ctx));
c->handle = lt_dlopen(module);
if (c->handle == NULL) {
free(c);
return NULL;
}
list = (CK_C_GetFunctionList) lt_dlsym(c->handle, "C_GetFunctionList");
if (list == NULL) {
free(c);
return NULL;
}
list(&c->sym);
return c;
}
// Destroy cleans up a ctx.
void Destroy(struct ctx *c)
{
if (!c) {
return;
}
if (c->handle == NULL) {
return;
}
if (lt_dlclose(c->handle) < 0) {
return;
}
lt_dlexit();
free(c);
}
CK_RV Initialize(struct ctx * c)
{
CK_C_INITIALIZE_ARGS args;
memset(&args, 0, sizeof(args));
args.flags = CKF_OS_LOCKING_OK;
return c->sym->C_Initialize(&args);
}
CK_RV Finalize(struct ctx * c)
{
return c->sym->C_Finalize(NULL);
}
CK_RV GetInfo(struct ctx * c, ckInfoPtr info)
{
CK_INFO p;
CK_RV e = c->sym->C_GetInfo(&p);
if (e != CKR_OK) {
return e;
}
info->cryptokiVersion = p.cryptokiVersion;
memcpy(info->manufacturerID, p.manufacturerID, sizeof(p.manufacturerID));
info->flags = p.flags;
memcpy(info->libraryDescription, p.libraryDescription, sizeof(p.libraryDescription));
info->libraryVersion = p.libraryVersion;
return e;
}
CK_RV GetSlotList(struct ctx * c, CK_BBOOL tokenPresent,
CK_ULONG_PTR * slotList, CK_ULONG_PTR ulCount)
{
CK_RV e = c->sym->C_GetSlotList(tokenPresent, NULL, ulCount);
if (e != CKR_OK) {
return e;
}
*slotList = calloc(*ulCount, sizeof(CK_SLOT_ID));
e = c->sym->C_GetSlotList(tokenPresent, *slotList, ulCount);
return e;
}
CK_RV GetSlotInfo(struct ctx * c, CK_ULONG slotID, CK_SLOT_INFO_PTR info)
{
CK_RV e = c->sym->C_GetSlotInfo((CK_SLOT_ID) slotID, info);
return e;
}
CK_RV GetTokenInfo(struct ctx * c, CK_ULONG slotID, CK_TOKEN_INFO_PTR info)
{
CK_RV e = c->sym->C_GetTokenInfo((CK_SLOT_ID) slotID, info);
return e;
}
CK_RV GetMechanismList(struct ctx * c, CK_ULONG slotID,
CK_ULONG_PTR * mech, CK_ULONG_PTR mechlen)
{
CK_RV e =
c->sym->C_GetMechanismList((CK_SLOT_ID) slotID, NULL, mechlen);
// Gemaltos PKCS11 implementation returns CKR_BUFFER_TOO_SMALL on a NULL ptr instad of CKR_OK as the spec states.
if (e != CKR_OK && e != CKR_BUFFER_TOO_SMALL) {
return e;
}
*mech = calloc(*mechlen, sizeof(CK_MECHANISM_TYPE));
e = c->sym->C_GetMechanismList((CK_SLOT_ID) slotID,
(CK_MECHANISM_TYPE_PTR) * mech, mechlen);
return e;
}
CK_RV GetMechanismInfo(struct ctx * c, CK_ULONG slotID, CK_MECHANISM_TYPE mech,
CK_MECHANISM_INFO_PTR info)
{
CK_RV e = c->sym->C_GetMechanismInfo((CK_SLOT_ID) slotID, mech, info);
return e;
}
CK_RV InitToken(struct ctx * c, CK_ULONG slotID, char *pin, CK_ULONG pinlen,
char *label)
{
CK_RV e =
c->sym->C_InitToken((CK_SLOT_ID) slotID, (CK_UTF8CHAR_PTR) pin,
pinlen, (CK_UTF8CHAR_PTR) label);
return e;
}
CK_RV InitPIN(struct ctx * c, CK_SESSION_HANDLE sh, char *pin, CK_ULONG pinlen)
{
CK_RV e = c->sym->C_InitPIN(sh, (CK_UTF8CHAR_PTR) pin, pinlen);
return e;
}
CK_RV SetPIN(struct ctx * c, CK_SESSION_HANDLE sh, char *oldpin,
CK_ULONG oldpinlen, char *newpin, CK_ULONG newpinlen)
{
CK_RV e = c->sym->C_SetPIN(sh, (CK_UTF8CHAR_PTR) oldpin, oldpinlen,
(CK_UTF8CHAR_PTR) newpin, newpinlen);
return e;
}
CK_RV OpenSession(struct ctx * c, CK_ULONG slotID, CK_ULONG flags,
CK_SESSION_HANDLE_PTR session)
{
CK_RV e =
c->sym->C_OpenSession((CK_SLOT_ID) slotID, (CK_FLAGS) flags, NULL,
NULL, session);
return e;
}
CK_RV CloseSession(struct ctx * c, CK_SESSION_HANDLE session)
{
CK_RV e = c->sym->C_CloseSession(session);
return e;
}
CK_RV CloseAllSessions(struct ctx * c, CK_ULONG slotID)
{
CK_RV e = c->sym->C_CloseAllSessions(slotID);
return e;
}
CK_RV GetSessionInfo(struct ctx * c, CK_SESSION_HANDLE session,
CK_SESSION_INFO_PTR info)
{
CK_RV e = c->sym->C_GetSessionInfo(session, info);
return e;
}
CK_RV GetOperationState(struct ctx * c, CK_SESSION_HANDLE session,
CK_BYTE_PTR * state, CK_ULONG_PTR statelen)
{
CK_RV rv = c->sym->C_GetOperationState(session, NULL, statelen);
if (rv != CKR_OK) {
return rv;
}
*state = calloc(*statelen, sizeof(CK_BYTE));
if (*state == NULL) {
return CKR_HOST_MEMORY;
}
rv = c->sym->C_GetOperationState(session, *state, statelen);
return rv;
}
CK_RV SetOperationState(struct ctx * c, CK_SESSION_HANDLE session,
CK_BYTE_PTR state, CK_ULONG statelen,
CK_OBJECT_HANDLE encryptkey, CK_OBJECT_HANDLE authkey)
{
return c->sym->C_SetOperationState(session, state, statelen, encryptkey,
authkey);
}
CK_RV Login(struct ctx *c, CK_SESSION_HANDLE session, CK_USER_TYPE userType,
char *pin, CK_ULONG pinLen)
{
if (pinLen == 0) {
pin = NULL;
}
CK_RV e =
c->sym->C_Login(session, userType, (CK_UTF8CHAR_PTR) pin, pinLen);
return e;
}
CK_RV Logout(struct ctx * c, CK_SESSION_HANDLE session)
{
CK_RV e = c->sym->C_Logout(session);
return e;
}
CK_RV CreateObject(struct ctx * c, CK_SESSION_HANDLE session,
ckAttrPtr temp, CK_ULONG tempCount,
CK_OBJECT_HANDLE_PTR obj)
{
ATTR_TO_C(tempc, temp, tempCount, NULL);
CK_RV e = c->sym->C_CreateObject(session, tempc, tempCount, obj);
ATTR_FREE(tempc);
return e;
}
CK_RV CopyObject(struct ctx * c, CK_SESSION_HANDLE session, CK_OBJECT_HANDLE o,
ckAttrPtr temp, CK_ULONG tempCount,
CK_OBJECT_HANDLE_PTR obj)
{
ATTR_TO_C(tempc, temp, tempCount, NULL);
CK_RV e = c->sym->C_CopyObject(session, o, tempc, tempCount, obj);
ATTR_FREE(tempc);
return e;
}
CK_RV DestroyObject(struct ctx * c, CK_SESSION_HANDLE session,
CK_OBJECT_HANDLE object)
{
CK_RV e = c->sym->C_DestroyObject(session, object);
return e;
}
CK_RV GetObjectSize(struct ctx * c, CK_SESSION_HANDLE session,
CK_OBJECT_HANDLE object, CK_ULONG_PTR size)
{
CK_RV e = c->sym->C_GetObjectSize(session, object, size);
return e;
}
CK_RV GetAttributeValue(struct ctx * c, CK_SESSION_HANDLE session,
CK_OBJECT_HANDLE object, ckAttrPtr temp,
CK_ULONG templen)
{
ATTR_TO_C(tempc, temp, templen, NULL);
// Call for the first time, check the returned ulValue in the attributes, then
// allocate enough space and try again.
CK_RV e = c->sym->C_GetAttributeValue(session, object, tempc, templen);
if (e != CKR_OK) {
ATTR_FREE(tempc);
return e;
}
CK_ULONG i;
for (i = 0; i < templen; i++) {
if ((CK_LONG) tempc[i].ulValueLen == -1) {
// either access denied or no such object
continue;
}
tempc[i].pValue = calloc(tempc[i].ulValueLen, sizeof(CK_BYTE));
}
e = c->sym->C_GetAttributeValue(session, object, tempc, templen);
ATTR_FROM_C(temp, tempc, templen);
ATTR_FREE(tempc);
return e;
}
CK_RV SetAttributeValue(struct ctx * c, CK_SESSION_HANDLE session,
CK_OBJECT_HANDLE object, ckAttrPtr temp,
CK_ULONG templen)
{
ATTR_TO_C(tempc, temp, templen, NULL);
CK_RV e = c->sym->C_SetAttributeValue(session, object, tempc, templen);
ATTR_FREE(tempc);
return e;
}
CK_RV FindObjectsInit(struct ctx * c, CK_SESSION_HANDLE session,
ckAttrPtr temp, CK_ULONG tempCount)
{
ATTR_TO_C(tempc, temp, tempCount, NULL);
CK_RV e = c->sym->C_FindObjectsInit(session, tempc, tempCount);
ATTR_FREE(tempc);
return e;
}
CK_RV FindObjects(struct ctx * c, CK_SESSION_HANDLE session,
CK_OBJECT_HANDLE_PTR * obj, CK_ULONG max,
CK_ULONG_PTR objCount)
{
*obj = calloc(max, sizeof(CK_OBJECT_HANDLE));
CK_RV e = c->sym->C_FindObjects(session, *obj, max, objCount);
return e;
}
CK_RV FindObjectsFinal(struct ctx * c, CK_SESSION_HANDLE session)
{
CK_RV e = c->sym->C_FindObjectsFinal(session);
return e;
}
CK_RV EncryptInit(struct ctx * c, CK_SESSION_HANDLE session,
ckMechPtr mechanism, CK_OBJECT_HANDLE key)
{
MECH_TO_C(m, mechanism);
CK_RV e = c->sym->C_EncryptInit(session, m, key);
return e;
}
CK_RV Encrypt(struct ctx * c, CK_SESSION_HANDLE session, CK_BYTE_PTR message,
CK_ULONG mlen, CK_BYTE_PTR * enc, CK_ULONG_PTR enclen)
{
CK_RV rv = c->sym->C_Encrypt(session, message, mlen, NULL, enclen);
if (rv != CKR_OK) {
return rv;
}
*enc = calloc(*enclen, sizeof(CK_BYTE));
if (*enc == NULL) {
return CKR_HOST_MEMORY;
}
rv = c->sym->C_Encrypt(session, message, mlen, *enc, enclen);
return rv;
}
CK_RV EncryptUpdate(struct ctx * c, CK_SESSION_HANDLE session,
CK_BYTE_PTR plain, CK_ULONG plainlen, CK_BYTE_PTR * cipher,
CK_ULONG_PTR cipherlen)
{
CK_RV rv =
c->sym->C_EncryptUpdate(session, plain, plainlen, NULL, cipherlen);
if (rv != CKR_OK) {
return rv;
}
*cipher = calloc(*cipherlen, sizeof(CK_BYTE));
if (*cipher == NULL) {
return CKR_HOST_MEMORY;
}
rv = c->sym->C_EncryptUpdate(session, plain, plainlen, *cipher,
cipherlen);
return rv;
}
CK_RV EncryptFinal(struct ctx * c, CK_SESSION_HANDLE session,
CK_BYTE_PTR * cipher, CK_ULONG_PTR cipherlen)
{
CK_RV rv = c->sym->C_EncryptFinal(session, NULL, cipherlen);
if (rv != CKR_OK) {
return rv;
}
*cipher = calloc(*cipherlen, sizeof(CK_BYTE));
if (*cipher == NULL) {
return CKR_HOST_MEMORY;
}
rv = c->sym->C_EncryptFinal(session, *cipher, cipherlen);
return rv;
}
CK_RV DecryptInit(struct ctx * c, CK_SESSION_HANDLE session,
ckMechPtr mechanism, CK_OBJECT_HANDLE key)
{
MECH_TO_C(m, mechanism);
CK_RV e = c->sym->C_DecryptInit(session, m, key);
return e;
}
CK_RV Decrypt(struct ctx * c, CK_SESSION_HANDLE session, CK_BYTE_PTR cypher,
CK_ULONG clen, CK_BYTE_PTR * plain, CK_ULONG_PTR plainlen)
{
CK_RV e = c->sym->C_Decrypt(session, cypher, clen, NULL, plainlen);
if (e != CKR_OK) {
return e;
}
*plain = calloc(*plainlen, sizeof(CK_BYTE));
if (*plain == NULL) {
return CKR_HOST_MEMORY;
}
e = c->sym->C_Decrypt(session, cypher, clen, *plain, plainlen);
return e;
}
CK_RV DecryptUpdate(struct ctx * c, CK_SESSION_HANDLE session,
CK_BYTE_PTR cipher, CK_ULONG cipherlen, CK_BYTE_PTR * part,
CK_ULONG_PTR partlen)
{
CK_RV rv =
c->sym->C_DecryptUpdate(session, cipher, cipherlen, NULL, partlen);
if (rv != CKR_OK) {
return rv;
}
*part = calloc(*partlen, sizeof(CK_BYTE));
if (*part == NULL) {
return CKR_HOST_MEMORY;
}
rv = c->sym->C_DecryptUpdate(session, cipher, cipherlen, *part,
partlen);
return rv;
}
CK_RV DecryptFinal(struct ctx * c, CK_SESSION_HANDLE session,
CK_BYTE_PTR * plain, CK_ULONG_PTR plainlen)
{
CK_RV rv = c->sym->C_DecryptFinal(session, NULL, plainlen);
if (rv != CKR_OK) {
return rv;
}
*plain = calloc(*plainlen, sizeof(CK_BYTE));
if (*plain == NULL) {
return CKR_HOST_MEMORY;
}
rv = c->sym->C_DecryptFinal(session, *plain, plainlen);
return rv;
}
CK_RV DigestInit(struct ctx * c, CK_SESSION_HANDLE session,
ckMechPtr mechanism)
{
MECH_TO_C(m, mechanism);
CK_RV e = c->sym->C_DigestInit(session, m);
return e;
}
CK_RV Digest(struct ctx * c, CK_SESSION_HANDLE session, CK_BYTE_PTR message,
CK_ULONG mlen, CK_BYTE_PTR * hash, CK_ULONG_PTR hashlen)
{
CK_RV rv = c->sym->C_Digest(session, message, mlen, NULL, hashlen);
if (rv != CKR_OK) {
return rv;
}
*hash = calloc(*hashlen, sizeof(CK_BYTE));
if (*hash == NULL) {
return CKR_HOST_MEMORY;
}
rv = c->sym->C_Digest(session, message, mlen, *hash, hashlen);
return rv;
}
CK_RV DigestUpdate(struct ctx * c, CK_SESSION_HANDLE session,
CK_BYTE_PTR message, CK_ULONG mlen)
{
CK_RV rv = c->sym->C_DigestUpdate(session, message, mlen);
return rv;
}
CK_RV DigestKey(struct ctx * c, CK_SESSION_HANDLE session, CK_OBJECT_HANDLE key)
{
CK_RV rv = c->sym->C_DigestKey(session, key);
return rv;
}
CK_RV DigestFinal(struct ctx * c, CK_SESSION_HANDLE session, CK_BYTE_PTR * hash,
CK_ULONG_PTR hashlen)
{
CK_RV rv = c->sym->C_DigestFinal(session, NULL, hashlen);
if (rv != CKR_OK) {
return rv;
}
*hash = calloc(*hashlen, sizeof(CK_BYTE));
if (*hash == NULL) {
return CKR_HOST_MEMORY;
}
rv = c->sym->C_DigestFinal(session, *hash, hashlen);
return rv;
}
CK_RV SignInit(struct ctx * c, CK_SESSION_HANDLE session,
ckMechPtr mechanism, CK_OBJECT_HANDLE key)
{
MECH_TO_C(m, mechanism);
CK_RV e = c->sym->C_SignInit(session, m, key);
return e;
}
CK_RV Sign(struct ctx * c, CK_SESSION_HANDLE session, CK_BYTE_PTR message,
CK_ULONG mlen, CK_BYTE_PTR * sig, CK_ULONG_PTR siglen)
{
CK_RV rv = c->sym->C_Sign(session, message, mlen, NULL, siglen);
if (rv != CKR_OK) {
return rv;
}
*sig = calloc(*siglen, sizeof(CK_BYTE));
if (*sig == NULL) {
return CKR_HOST_MEMORY;
}
rv = c->sym->C_Sign(session, message, mlen, *sig, siglen);
return rv;
}
CK_RV SignUpdate(struct ctx * c, CK_SESSION_HANDLE session,
CK_BYTE_PTR message, CK_ULONG mlen)
{
CK_RV rv = c->sym->C_SignUpdate(session, message, mlen);
return rv;
}
CK_RV SignFinal(struct ctx * c, CK_SESSION_HANDLE session, CK_BYTE_PTR * sig,
CK_ULONG_PTR siglen)
{
CK_RV rv = c->sym->C_SignFinal(session, NULL, siglen);
if (rv != CKR_OK) {
return rv;
}
*sig = calloc(*siglen, sizeof(CK_BYTE));
if (*sig == NULL) {
return CKR_HOST_MEMORY;
}
rv = c->sym->C_SignFinal(session, *sig, siglen);
return rv;
}
CK_RV SignRecoverInit(struct ctx * c, CK_SESSION_HANDLE session,
ckMechPtr mech, CK_OBJECT_HANDLE key)
{
MECH_TO_C(m, mech);
CK_RV rv = c->sym->C_SignRecoverInit(session, m, key);
return rv;
}
CK_RV SignRecover(struct ctx * c, CK_SESSION_HANDLE session, CK_BYTE_PTR data,
CK_ULONG datalen, CK_BYTE_PTR * sig, CK_ULONG_PTR siglen)
{
CK_RV rv = c->sym->C_SignRecover(session, data, datalen, NULL, siglen);
if (rv != CKR_OK) {
return rv;
}
*sig = calloc(*siglen, sizeof(CK_BYTE));
if (*sig == NULL) {
return CKR_HOST_MEMORY;
}
rv = c->sym->C_SignRecover(session, data, datalen, *sig, siglen);
return rv;
}
CK_RV VerifyInit(struct ctx * c, CK_SESSION_HANDLE session,
ckMechPtr mech, CK_OBJECT_HANDLE key)
{
MECH_TO_C(m, mech);
CK_RV rv = c->sym->C_VerifyInit(session, m, key);
return rv;
}
CK_RV Verify(struct ctx * c, CK_SESSION_HANDLE session, CK_BYTE_PTR message,
CK_ULONG mesglen, CK_BYTE_PTR sig, CK_ULONG siglen)
{
CK_RV rv = c->sym->C_Verify(session, message, mesglen, sig, siglen);
return rv;
}
CK_RV VerifyUpdate(struct ctx * c, CK_SESSION_HANDLE session,
CK_BYTE_PTR part, CK_ULONG partlen)
{
CK_RV rv = c->sym->C_VerifyUpdate(session, part, partlen);
return rv;
}
CK_RV VerifyFinal(struct ctx * c, CK_SESSION_HANDLE session, CK_BYTE_PTR sig,
CK_ULONG siglen)
{
CK_RV rv = c->sym->C_VerifyFinal(session, sig, siglen);
return rv;
}
CK_RV VerifyRecoverInit(struct ctx * c, CK_SESSION_HANDLE session,
ckMechPtr mech, CK_OBJECT_HANDLE key)
{
MECH_TO_C(m, mech);
CK_RV rv = c->sym->C_VerifyRecoverInit(session, m, key);
return rv;
}
CK_RV VerifyRecover(struct ctx * c, CK_SESSION_HANDLE session, CK_BYTE_PTR sig,
CK_ULONG siglen, CK_BYTE_PTR * data, CK_ULONG_PTR datalen)
{
CK_RV rv = c->sym->C_VerifyRecover(session, sig, siglen, NULL, datalen);
if (rv != CKR_OK) {
return rv;
}
*data = calloc(*datalen, sizeof(CK_BYTE));
if (*data == NULL) {
return CKR_HOST_MEMORY;
}
rv = c->sym->C_VerifyRecover(session, sig, siglen, *data, datalen);
return rv;
}
CK_RV DigestEncryptUpdate(struct ctx * c, CK_SESSION_HANDLE session,
CK_BYTE_PTR part, CK_ULONG partlen, CK_BYTE_PTR * enc,
CK_ULONG_PTR enclen)
{
CK_RV rv =
c->sym->C_DigestEncryptUpdate(session, part, partlen, NULL, enclen);
if (rv != CKR_OK) {
return rv;
}
*enc = calloc(*enclen, sizeof(CK_BYTE));
if (*enc == NULL) {
return CKR_HOST_MEMORY;
}
rv = c->sym->C_DigestEncryptUpdate(session, part, partlen, *enc,
enclen);
return rv;
}
CK_RV DecryptDigestUpdate(struct ctx * c, CK_SESSION_HANDLE session,
CK_BYTE_PTR cipher, CK_ULONG cipherlen,
CK_BYTE_PTR * part, CK_ULONG_PTR partlen)
{
CK_RV rv =
c->sym->C_DecryptDigestUpdate(session, cipher, cipherlen, NULL,
partlen);
if (rv != CKR_OK) {
return rv;
}
*part = calloc(*partlen, sizeof(CK_BYTE));
if (*part == NULL) {
return CKR_HOST_MEMORY;
}
rv = c->sym->C_DecryptDigestUpdate(session, cipher, cipherlen, *part,
partlen);
return rv;
}
CK_RV SignEncryptUpdate(struct ctx * c, CK_SESSION_HANDLE session,
CK_BYTE_PTR part, CK_ULONG partlen, CK_BYTE_PTR * enc,
CK_ULONG_PTR enclen)
{
CK_RV rv =
c->sym->C_SignEncryptUpdate(session, part, partlen, NULL, enclen);
if (rv != CKR_OK) {
return rv;
}
*enc = calloc(*enclen, sizeof(CK_BYTE));
if (*enc == NULL) {
return CKR_HOST_MEMORY;
}
rv = c->sym->C_SignEncryptUpdate(session, part, partlen, *enc, enclen);
return rv;
}
CK_RV DecryptVerifyUpdate(struct ctx * c, CK_SESSION_HANDLE session,
CK_BYTE_PTR cipher, CK_ULONG cipherlen,
CK_BYTE_PTR * part, CK_ULONG_PTR partlen)
{
CK_RV rv =
c->sym->C_DecryptVerifyUpdate(session, cipher, cipherlen, NULL,
partlen);
if (rv != CKR_OK) {
return rv;
}
*part = calloc(*partlen, sizeof(CK_BYTE));
if (*part == NULL) {
return CKR_HOST_MEMORY;
}
rv = c->sym->C_DecryptVerifyUpdate(session, cipher, cipherlen, *part,
partlen);
return rv;
}
CK_RV GenerateKey(struct ctx * c, CK_SESSION_HANDLE session,
ckMechPtr mechanism, ckAttrPtr temp,
CK_ULONG tempCount, CK_OBJECT_HANDLE_PTR key)
{
MECH_TO_C(m, mechanism);
ATTR_TO_C(tempc, temp, tempCount, NULL);
CK_RV e = c->sym->C_GenerateKey(session, m, tempc, tempCount, key);
ATTR_FREE(tempc);
return e;
}
CK_RV GenerateKeyPair(struct ctx * c, CK_SESSION_HANDLE session,
ckMechPtr mechanism, ckAttrPtr pub,
CK_ULONG pubCount, ckAttrPtr priv,
CK_ULONG privCount, CK_OBJECT_HANDLE_PTR pubkey,
CK_OBJECT_HANDLE_PTR privkey)
{
MECH_TO_C(m, mechanism);
ATTR_TO_C(pubc, pub, pubCount, NULL);
ATTR_TO_C(privc, priv, privCount, pubc);
CK_RV e = c->sym->C_GenerateKeyPair(session, m, pubc, pubCount,
privc, privCount, pubkey, privkey);
ATTR_FREE(pubc);
ATTR_FREE(privc);
return e;
}
CK_RV WrapKey(struct ctx * c, CK_SESSION_HANDLE session,
ckMechPtr mechanism, CK_OBJECT_HANDLE wrappingkey,
CK_OBJECT_HANDLE key, CK_BYTE_PTR * wrapped,
CK_ULONG_PTR wrappedlen)
{
MECH_TO_C(m, mechanism);
CK_RV rv = c->sym->C_WrapKey(session, m, wrappingkey, key, NULL,
wrappedlen);
if (rv != CKR_OK) {
return rv;
}
*wrapped = calloc(*wrappedlen, sizeof(CK_BYTE));
if (*wrapped == NULL) {
return CKR_HOST_MEMORY;
}
rv = c->sym->C_WrapKey(session, m, wrappingkey, key, *wrapped,
wrappedlen);
return rv;
}
CK_RV DeriveKey(struct ctx * c, CK_SESSION_HANDLE session,
ckMechPtr mech, CK_OBJECT_HANDLE basekey,
ckAttrPtr a, CK_ULONG alen, CK_OBJECT_HANDLE_PTR key)
{
MECH_TO_C(m, mech);
ATTR_TO_C(tempc, a, alen, NULL);
CK_RV e = c->sym->C_DeriveKey(session, m, basekey, tempc, alen, key);
ATTR_FREE(tempc);
return e;
}
CK_RV UnwrapKey(struct ctx * c, CK_SESSION_HANDLE session,
ckMechPtr mech, CK_OBJECT_HANDLE unwrappingkey,
CK_BYTE_PTR wrappedkey, CK_ULONG wrappedkeylen,
ckAttrPtr a, CK_ULONG alen, CK_OBJECT_HANDLE_PTR key)
{
MECH_TO_C(m, mech);
ATTR_TO_C(tempc, a, alen, NULL);
CK_RV e = c->sym->C_UnwrapKey(session, m, unwrappingkey, wrappedkey,
wrappedkeylen, tempc, alen, key);
ATTR_FREE(tempc);
return e;
}
CK_RV SeedRandom(struct ctx * c, CK_SESSION_HANDLE session, CK_BYTE_PTR seed,
CK_ULONG seedlen)
{
CK_RV e = c->sym->C_SeedRandom(session, seed, seedlen);
return e;
}
CK_RV GenerateRandom(struct ctx * c, CK_SESSION_HANDLE session,
CK_BYTE_PTR * rand, CK_ULONG length)
{
*rand = calloc(length, sizeof(CK_BYTE));
if (*rand == NULL) {
return CKR_HOST_MEMORY;
}
CK_RV e = c->sym->C_GenerateRandom(session, *rand, length);
return e;
}
CK_RV WaitForSlotEvent(struct ctx * c, CK_FLAGS flags, CK_ULONG_PTR slot)
{
CK_RV e =
c->sym->C_WaitForSlotEvent(flags, (CK_SLOT_ID_PTR) slot, NULL);
return e;
}
#ifdef REPACK_STRUCTURES
CK_RV attrsToC(CK_ATTRIBUTE_PTR *attrOut, ckAttrPtr attrIn, CK_ULONG count) {
CK_ATTRIBUTE_PTR attr = calloc(count, sizeof(CK_ATTRIBUTE));
if (attr == NULL) {
return CKR_HOST_MEMORY;
}
for (int i = 0; i < count; i++) {
attr[i].type = attrIn[i].type;
attr[i].pValue = attrIn[i].pValue;
attr[i].ulValueLen = attrIn[i].ulValueLen;
}
*attrOut = attr;
return CKR_OK;
}
void attrsFromC(ckAttrPtr attrOut, CK_ATTRIBUTE_PTR attrIn, CK_ULONG count) {
for (int i = 0; i < count; i++) {
attrOut[i].type = attrIn[i].type;
attrOut[i].pValue = attrIn[i].pValue;
attrOut[i].ulValueLen = attrIn[i].ulValueLen;
}
}
void mechToC(CK_MECHANISM_PTR mechOut, ckMechPtr mechIn) {
mechOut->mechanism = mechIn->mechanism;
mechOut->pParameter = mechIn->pParameter;
mechOut->ulParameterLen = mechIn->ulParameterLen;
}
#endif
*/
import "C"
import "strings"
import "unsafe"
// Ctx contains the current pkcs11 context.
type Ctx struct {
ctx *C.struct_ctx
}
// New creates a new context and initializes the module/library for use.
func New(module string) *Ctx {
// libtool-ltdl will return an assertion error if passed an empty string, so
// we check for it explicitly.
if module == "" {
return nil
}
c := new(Ctx)
mod := C.CString(module)
defer C.free(unsafe.Pointer(mod))
c.ctx = C.New(mod)
if c.ctx == nil {
return nil
}
return c
}
// Destroy unloads the module/library and frees any remaining memory.
func (c *Ctx) Destroy() {
if c == nil || c.ctx == nil {
return
}
C.Destroy(c.ctx)
c.ctx = nil
}
// Initialize initializes the Cryptoki library. */
func (c *Ctx) Initialize() error {
e := C.Initialize(c.ctx)
return toError(e)
}
// Finalize indicates that an application is done with the Cryptoki library. */
func (c *Ctx) Finalize() error {
if c.ctx == nil {
return toError(CKR_CRYPTOKI_NOT_INITIALIZED)
}
e := C.Finalize(c.ctx)
return toError(e)
}
// GetInfo returns general information about Cryptoki. */
func (c *Ctx) GetInfo() (Info, error) {
var p C.ckInfo
e := C.GetInfo(c.ctx, &p)
i := Info{
CryptokiVersion: toVersion(p.cryptokiVersion),
ManufacturerID: strings.TrimRight(string(C.GoBytes(unsafe.Pointer(&p.manufacturerID[0]), 32)), " "),
Flags: uint(p.flags),
LibraryDescription: strings.TrimRight(string(C.GoBytes(unsafe.Pointer(&p.libraryDescription[0]), 32)), " "),
LibraryVersion: toVersion(p.libraryVersion),
}
return i, toError(e)
}
// GetSlotList obtains a list of slots in the system. */
func (c *Ctx) GetSlotList(tokenPresent bool) ([]uint, error) {
var (
slotList C.CK_ULONG_PTR
ulCount C.CK_ULONG
)
e := C.GetSlotList(c.ctx, cBBool(tokenPresent), &slotList, &ulCount)
if toError(e) != nil {
return nil, toError(e)
}
l := toList(slotList, ulCount)
return l, nil
}
// GetSlotInfo obtains information about a particular slot in the system. */
func (c *Ctx) GetSlotInfo(slotID uint) (SlotInfo, error) {
var csi C.CK_SLOT_INFO
e := C.GetSlotInfo(c.ctx, C.CK_ULONG(slotID), &csi)
s := SlotInfo{
SlotDescription: strings.TrimRight(string(C.GoBytes(unsafe.Pointer(&csi.slotDescription[0]), 64)), " "),
ManufacturerID: strings.TrimRight(string(C.GoBytes(unsafe.Pointer(&csi.manufacturerID[0]), 32)), " "),
Flags: uint(csi.flags),
HardwareVersion: toVersion(csi.hardwareVersion),
FirmwareVersion: toVersion(csi.firmwareVersion),
}
return s, toError(e)
}
// GetTokenInfo obtains information about a particular token
// in the system.
func (c *Ctx) GetTokenInfo(slotID uint) (TokenInfo, error) {
var cti C.CK_TOKEN_INFO
e := C.GetTokenInfo(c.ctx, C.CK_ULONG(slotID), &cti)
s := TokenInfo{
Label: strings.TrimRight(string(C.GoBytes(unsafe.Pointer(&cti.label[0]), 32)), " "),
ManufacturerID: strings.TrimRight(string(C.GoBytes(unsafe.Pointer(&cti.manufacturerID[0]), 32)), " "),
Model: strings.TrimRight(string(C.GoBytes(unsafe.Pointer(&cti.model[0]), 16)), " "),
SerialNumber: strings.TrimRight(string(C.GoBytes(unsafe.Pointer(&cti.serialNumber[0]), 16)), " "),
Flags: uint(cti.flags),
MaxSessionCount: uint(cti.ulMaxSessionCount),
SessionCount: uint(cti.ulSessionCount),
MaxRwSessionCount: uint(cti.ulMaxRwSessionCount),
RwSessionCount: uint(cti.ulRwSessionCount),
MaxPinLen: uint(cti.ulMaxPinLen),
MinPinLen: uint(cti.ulMinPinLen),
TotalPublicMemory: uint(cti.ulTotalPublicMemory),
FreePublicMemory: uint(cti.ulFreePublicMemory),
TotalPrivateMemory: uint(cti.ulTotalPrivateMemory),
FreePrivateMemory: uint(cti.ulFreePrivateMemory),
HardwareVersion: toVersion(cti.hardwareVersion),
FirmwareVersion: toVersion(cti.firmwareVersion),
UTCTime: strings.TrimRight(string(C.GoBytes(unsafe.Pointer(&cti.utcTime[0]), 16)), " "),
}
return s, toError(e)
}
// GetMechanismList obtains a list of mechanism types supported by a token. */
func (c *Ctx) GetMechanismList(slotID uint) ([]*Mechanism, error) {
var (
mech C.CK_ULONG_PTR // in pkcs#11 we're all CK_ULONGs \o/
mechlen C.CK_ULONG
)
e := C.GetMechanismList(c.ctx, C.CK_ULONG(slotID), &mech, &mechlen)
if toError(e) != nil {
return nil, toError(e)
}
// Although the function returns only type, cast them back into real
// attributes as this is used in other functions.
m := make([]*Mechanism, int(mechlen))
for i, typ := range toList(mech, mechlen) {
m[i] = NewMechanism(typ, nil)
}
return m, nil
}
// GetMechanismInfo obtains information about a particular
// mechanism possibly supported by a token.
func (c *Ctx) GetMechanismInfo(slotID uint, m []*Mechanism) (MechanismInfo, error) {
var cm C.CK_MECHANISM_INFO
e := C.GetMechanismInfo(c.ctx, C.CK_ULONG(slotID), C.CK_MECHANISM_TYPE(m[0].Mechanism),
C.CK_MECHANISM_INFO_PTR(&cm))
mi := MechanismInfo{
MinKeySize: uint(cm.ulMinKeySize),
MaxKeySize: uint(cm.ulMaxKeySize),
Flags: uint(cm.flags),
}
return mi, toError(e)
}
// InitToken initializes a token. The label must be 32 characters
// long, it is blank padded if it is not. If it is longer it is capped
// to 32 characters.
func (c *Ctx) InitToken(slotID uint, pin string, label string) error {
p := C.CString(pin)
defer C.free(unsafe.Pointer(p))
ll := len(label)
for ll < 32 {
label += " "
ll++
}
l := C.CString(label[:32])
defer C.free(unsafe.Pointer(l))
e := C.InitToken(c.ctx, C.CK_ULONG(slotID), p, C.CK_ULONG(len(pin)), l)
return toError(e)
}
// InitPIN initializes the normal user's PIN.
func (c *Ctx) InitPIN(sh SessionHandle, pin string) error {
p := C.CString(pin)
defer C.free(unsafe.Pointer(p))
e := C.InitPIN(c.ctx, C.CK_SESSION_HANDLE(sh), p, C.CK_ULONG(len(pin)))
return toError(e)
}
// SetPIN modifies the PIN of the user who is logged in.
func (c *Ctx) SetPIN(sh SessionHandle, oldpin string, newpin string) error {
old := C.CString(oldpin)
defer C.free(unsafe.Pointer(old))
new := C.CString(newpin)
defer C.free(unsafe.Pointer(new))
e := C.SetPIN(c.ctx, C.CK_SESSION_HANDLE(sh), old, C.CK_ULONG(len(oldpin)), new, C.CK_ULONG(len(newpin)))
return toError(e)
}
// OpenSession opens a session between an application and a token.
func (c *Ctx) OpenSession(slotID uint, flags uint) (SessionHandle, error) {
var s C.CK_SESSION_HANDLE
e := C.OpenSession(c.ctx, C.CK_ULONG(slotID), C.CK_ULONG(flags), C.CK_SESSION_HANDLE_PTR(&s))
return SessionHandle(s), toError(e)
}
// CloseSession closes a session between an application and a token.
func (c *Ctx) CloseSession(sh SessionHandle) error {
if c.ctx == nil {
return toError(CKR_CRYPTOKI_NOT_INITIALIZED)
}
e := C.CloseSession(c.ctx, C.CK_SESSION_HANDLE(sh))
return toError(e)
}
// CloseAllSessions closes all sessions with a token.
func (c *Ctx) CloseAllSessions(slotID uint) error {
if c.ctx == nil {
return toError(CKR_CRYPTOKI_NOT_INITIALIZED)
}
e := C.CloseAllSessions(c.ctx, C.CK_ULONG(slotID))
return toError(e)
}
// GetSessionInfo obtains information about the session.
func (c *Ctx) GetSessionInfo(sh SessionHandle) (SessionInfo, error) {
var csi C.CK_SESSION_INFO
e := C.GetSessionInfo(c.ctx, C.CK_SESSION_HANDLE(sh), &csi)
s := SessionInfo{SlotID: uint(csi.slotID),
State: uint(csi.state),
Flags: uint(csi.flags),
DeviceError: uint(csi.ulDeviceError),
}
return s, toError(e)
}
// GetOperationState obtains the state of the cryptographic operation in a session.
func (c *Ctx) GetOperationState(sh SessionHandle) ([]byte, error) {
var (
state C.CK_BYTE_PTR
statelen C.CK_ULONG
)
e := C.GetOperationState(c.ctx, C.CK_SESSION_HANDLE(sh), &state, &statelen)
if toError(e) != nil {
return nil, toError(e)
}
b := C.GoBytes(unsafe.Pointer(state), C.int(statelen))
C.free(unsafe.Pointer(state))
return b, nil
}
// SetOperationState restores the state of the cryptographic operation in a session.
func (c *Ctx) SetOperationState(sh SessionHandle, state []byte, encryptKey, authKey ObjectHandle) error {
e := C.SetOperationState(c.ctx, C.CK_SESSION_HANDLE(sh), C.CK_BYTE_PTR(unsafe.Pointer(&state[0])),
C.CK_ULONG(len(state)), C.CK_OBJECT_HANDLE(encryptKey), C.CK_OBJECT_HANDLE(authKey))
return toError(e)
}
// Login logs a user into a token.
func (c *Ctx) Login(sh SessionHandle, userType uint, pin string) error {
p := C.CString(pin)
defer C.free(unsafe.Pointer(p))
e := C.Login(c.ctx, C.CK_SESSION_HANDLE(sh), C.CK_USER_TYPE(userType), p, C.CK_ULONG(len(pin)))
return toError(e)
}
// Logout logs a user out from a token.
func (c *Ctx) Logout(sh SessionHandle) error {
if c.ctx == nil {
return toError(CKR_CRYPTOKI_NOT_INITIALIZED)
}
e := C.Logout(c.ctx, C.CK_SESSION_HANDLE(sh))
return toError(e)
}
// CreateObject creates a new object.
func (c *Ctx) CreateObject(sh SessionHandle, temp []*Attribute) (ObjectHandle, error) {
var obj C.CK_OBJECT_HANDLE
arena, t, tcount := cAttributeList(temp)
defer arena.Free()
e := C.CreateObject(c.ctx, C.CK_SESSION_HANDLE(sh), t, tcount, C.CK_OBJECT_HANDLE_PTR(&obj))
e1 := toError(e)
if e1 == nil {
return ObjectHandle(obj), nil
}
return 0, e1
}
// CopyObject copies an object, creating a new object for the copy.
func (c *Ctx) CopyObject(sh SessionHandle, o ObjectHandle, temp []*Attribute) (ObjectHandle, error) {
var obj C.CK_OBJECT_HANDLE
arena, t, tcount := cAttributeList(temp)
defer arena.Free()
e := C.CopyObject(c.ctx, C.CK_SESSION_HANDLE(sh), C.CK_OBJECT_HANDLE(o), t, tcount, C.CK_OBJECT_HANDLE_PTR(&obj))
e1 := toError(e)
if e1 == nil {
return ObjectHandle(obj), nil
}
return 0, e1
}
// DestroyObject destroys an object.
func (c *Ctx) DestroyObject(sh SessionHandle, oh ObjectHandle) error {
e := C.DestroyObject(c.ctx, C.CK_SESSION_HANDLE(sh), C.CK_OBJECT_HANDLE(oh))
return toError(e)
}
// GetObjectSize gets the size of an object in bytes.
func (c *Ctx) GetObjectSize(sh SessionHandle, oh ObjectHandle) (uint, error) {
var size C.CK_ULONG
e := C.GetObjectSize(c.ctx, C.CK_SESSION_HANDLE(sh), C.CK_OBJECT_HANDLE(oh), &size)
return uint(size), toError(e)
}
// GetAttributeValue obtains the value of one or more object attributes.
func (c *Ctx) GetAttributeValue(sh SessionHandle, o ObjectHandle, a []*Attribute) ([]*Attribute, error) {
// copy the attribute list and make all the values nil, so that
// the C function can (allocate) fill them in
pa := make([]C.ckAttr, len(a))
for i := 0; i < len(a); i++ {
pa[i]._type = C.CK_ATTRIBUTE_TYPE(a[i].Type)
}
e := C.GetAttributeValue(c.ctx, C.CK_SESSION_HANDLE(sh), C.CK_OBJECT_HANDLE(o), C.ckAttrPtr(&pa[0]), C.CK_ULONG(len(a)))
if toError(e) != nil {
return nil, toError(e)
}
a1 := make([]*Attribute, len(a))
for i, c := range pa {
x := new(Attribute)
x.Type = uint(c._type)
if int(c.ulValueLen) != -1 {
x.Value = C.GoBytes(unsafe.Pointer(c.pValue), C.int(c.ulValueLen))
C.free(unsafe.Pointer(c.pValue))
}
a1[i] = x
}
return a1, nil
}
// SetAttributeValue modifies the value of one or more object attributes
func (c *Ctx) SetAttributeValue(sh SessionHandle, o ObjectHandle, a []*Attribute) error {
arena, pa, palen := cAttributeList(a)
defer arena.Free()
e := C.SetAttributeValue(c.ctx, C.CK_SESSION_HANDLE(sh), C.CK_OBJECT_HANDLE(o), pa, palen)
return toError(e)
}
// FindObjectsInit initializes a search for token and session
// objects that match a template.
func (c *Ctx) FindObjectsInit(sh SessionHandle, temp []*Attribute) error {
arena, t, tcount := cAttributeList(temp)
defer arena.Free()
e := C.FindObjectsInit(c.ctx, C.CK_SESSION_HANDLE(sh), t, tcount)
return toError(e)
}
// FindObjects continues a search for token and session
// objects that match a template, obtaining additional object
// handles. The returned boolean indicates if the list would
// have been larger than max.
func (c *Ctx) FindObjects(sh SessionHandle, max int) ([]ObjectHandle, bool, error) {
var (
objectList C.CK_OBJECT_HANDLE_PTR
ulCount C.CK_ULONG
)
e := C.FindObjects(c.ctx, C.CK_SESSION_HANDLE(sh), &objectList, C.CK_ULONG(max), &ulCount)
if toError(e) != nil {
return nil, false, toError(e)
}
l := toList(C.CK_ULONG_PTR(unsafe.Pointer(objectList)), ulCount)
// Make again a new list of the correct type.
// This is copying data, but this is not an often used function.
o := make([]ObjectHandle, len(l))
for i, v := range l {
o[i] = ObjectHandle(v)
}
return o, ulCount > C.CK_ULONG(max), nil
}
// FindObjectsFinal finishes a search for token and session objects.
func (c *Ctx) FindObjectsFinal(sh SessionHandle) error {
e := C.FindObjectsFinal(c.ctx, C.CK_SESSION_HANDLE(sh))
return toError(e)
}
// EncryptInit initializes an encryption operation.
func (c *Ctx) EncryptInit(sh SessionHandle, m []*Mechanism, o ObjectHandle) error {
arena, mech, _ := cMechanismList(m)
defer arena.Free()
e := C.EncryptInit(c.ctx, C.CK_SESSION_HANDLE(sh), mech, C.CK_OBJECT_HANDLE(o))
return toError(e)
}
// Encrypt encrypts single-part data.
func (c *Ctx) Encrypt(sh SessionHandle, message []byte) ([]byte, error) {
var (
enc C.CK_BYTE_PTR
enclen C.CK_ULONG
)
e := C.Encrypt(c.ctx, C.CK_SESSION_HANDLE(sh), C.CK_BYTE_PTR(unsafe.Pointer(&message[0])), C.CK_ULONG(len(message)), &enc, &enclen)
if toError(e) != nil {
return nil, toError(e)
}
s := C.GoBytes(unsafe.Pointer(enc), C.int(enclen))
C.free(unsafe.Pointer(enc))
return s, nil
}
// EncryptUpdate continues a multiple-part encryption operation.
func (c *Ctx) EncryptUpdate(sh SessionHandle, plain []byte) ([]byte, error) {
var (
part C.CK_BYTE_PTR
partlen C.CK_ULONG
)
e := C.EncryptUpdate(c.ctx, C.CK_SESSION_HANDLE(sh), C.CK_BYTE_PTR(unsafe.Pointer(&plain[0])), C.CK_ULONG(len(plain)), &part, &partlen)
if toError(e) != nil {
return nil, toError(e)
}
h := C.GoBytes(unsafe.Pointer(part), C.int(partlen))
C.free(unsafe.Pointer(part))
return h, nil
}
// EncryptFinal finishes a multiple-part encryption operation.
func (c *Ctx) EncryptFinal(sh SessionHandle) ([]byte, error) {
var (
enc C.CK_BYTE_PTR
enclen C.CK_ULONG
)
e := C.EncryptFinal(c.ctx, C.CK_SESSION_HANDLE(sh), &enc, &enclen)
if toError(e) != nil {
return nil, toError(e)
}
h := C.GoBytes(unsafe.Pointer(enc), C.int(enclen))
C.free(unsafe.Pointer(enc))
return h, nil
}
// DecryptInit initializes a decryption operation.
func (c *Ctx) DecryptInit(sh SessionHandle, m []*Mechanism, o ObjectHandle) error {
arena, mech, _ := cMechanismList(m)
defer arena.Free()
e := C.DecryptInit(c.ctx, C.CK_SESSION_HANDLE(sh), mech, C.CK_OBJECT_HANDLE(o))
return toError(e)
}
// Decrypt decrypts encrypted data in a single part.
func (c *Ctx) Decrypt(sh SessionHandle, cypher []byte) ([]byte, error) {
var (
plain C.CK_BYTE_PTR
plainlen C.CK_ULONG
)
e := C.Decrypt(c.ctx, C.CK_SESSION_HANDLE(sh), C.CK_BYTE_PTR(unsafe.Pointer(&cypher[0])), C.CK_ULONG(len(cypher)), &plain, &plainlen)
if toError(e) != nil {
return nil, toError(e)
}
s := C.GoBytes(unsafe.Pointer(plain), C.int(plainlen))
C.free(unsafe.Pointer(plain))
return s, nil
}
// DecryptUpdate continues a multiple-part decryption operation.
func (c *Ctx) DecryptUpdate(sh SessionHandle, cipher []byte) ([]byte, error) {
var (
part C.CK_BYTE_PTR
partlen C.CK_ULONG
)
e := C.DecryptUpdate(c.ctx, C.CK_SESSION_HANDLE(sh), C.CK_BYTE_PTR(unsafe.Pointer(&cipher[0])), C.CK_ULONG(len(cipher)), &part, &partlen)
if toError(e) != nil {
return nil, toError(e)
}
h := C.GoBytes(unsafe.Pointer(part), C.int(partlen))
C.free(unsafe.Pointer(part))
return h, nil
}
// DecryptFinal finishes a multiple-part decryption operation.
func (c *Ctx) DecryptFinal(sh SessionHandle) ([]byte, error) {
var (
plain C.CK_BYTE_PTR
plainlen C.CK_ULONG
)
e := C.DecryptFinal(c.ctx, C.CK_SESSION_HANDLE(sh), &plain, &plainlen)
if toError(e) != nil {
return nil, toError(e)
}
h := C.GoBytes(unsafe.Pointer(plain), C.int(plainlen))
C.free(unsafe.Pointer(plain))
return h, nil
}
// DigestInit initializes a message-digesting operation.
func (c *Ctx) DigestInit(sh SessionHandle, m []*Mechanism) error {
arena, mech, _ := cMechanismList(m)
defer arena.Free()
e := C.DigestInit(c.ctx, C.CK_SESSION_HANDLE(sh), mech)
return toError(e)
}
// Digest digests message in a single part.
func (c *Ctx) Digest(sh SessionHandle, message []byte) ([]byte, error) {
var (
hash C.CK_BYTE_PTR
hashlen C.CK_ULONG
)
e := C.Digest(c.ctx, C.CK_SESSION_HANDLE(sh), C.CK_BYTE_PTR(unsafe.Pointer(&message[0])), C.CK_ULONG(len(message)), &hash, &hashlen)
if toError(e) != nil {
return nil, toError(e)
}
h := C.GoBytes(unsafe.Pointer(hash), C.int(hashlen))
C.free(unsafe.Pointer(hash))
return h, nil
}
// DigestUpdate continues a multiple-part message-digesting operation.
func (c *Ctx) DigestUpdate(sh SessionHandle, message []byte) error {
e := C.DigestUpdate(c.ctx, C.CK_SESSION_HANDLE(sh), C.CK_BYTE_PTR(unsafe.Pointer(&message[0])), C.CK_ULONG(len(message)))
if toError(e) != nil {
return toError(e)
}
return nil
}
// DigestKey continues a multi-part message-digesting
// operation, by digesting the value of a secret key as part of
// the data already digested.
func (c *Ctx) DigestKey(sh SessionHandle, key ObjectHandle) error {
e := C.DigestKey(c.ctx, C.CK_SESSION_HANDLE(sh), C.CK_OBJECT_HANDLE(key))
if toError(e) != nil {
return toError(e)
}
return nil
}
// DigestFinal finishes a multiple-part message-digesting operation.
func (c *Ctx) DigestFinal(sh SessionHandle) ([]byte, error) {
var (
hash C.CK_BYTE_PTR
hashlen C.CK_ULONG
)
e := C.DigestFinal(c.ctx, C.CK_SESSION_HANDLE(sh), &hash, &hashlen)
if toError(e) != nil {
return nil, toError(e)
}
h := C.GoBytes(unsafe.Pointer(hash), C.int(hashlen))
C.free(unsafe.Pointer(hash))
return h, nil
}
// SignInit initializes a signature (private key encryption)
// operation, where the signature is (will be) an appendix to
// the data, and plaintext cannot be recovered from the signature.
func (c *Ctx) SignInit(sh SessionHandle, m []*Mechanism, o ObjectHandle) error {
arena, mech, _ := cMechanismList(m) // Only the first is used, but still use a list.
defer arena.Free()
e := C.SignInit(c.ctx, C.CK_SESSION_HANDLE(sh), mech, C.CK_OBJECT_HANDLE(o))
return toError(e)
}
// Sign signs (encrypts with private key) data in a single part, where the signature
// is (will be) an appendix to the data, and plaintext cannot be recovered from the signature.
func (c *Ctx) Sign(sh SessionHandle, message []byte) ([]byte, error) {
var (
sig C.CK_BYTE_PTR
siglen C.CK_ULONG
)
e := C.Sign(c.ctx, C.CK_SESSION_HANDLE(sh), C.CK_BYTE_PTR(unsafe.Pointer(&message[0])), C.CK_ULONG(len(message)), &sig, &siglen)
if toError(e) != nil {
return nil, toError(e)
}
s := C.GoBytes(unsafe.Pointer(sig), C.int(siglen))
C.free(unsafe.Pointer(sig))
return s, nil
}
// SignUpdate continues a multiple-part signature operation,
// where the signature is (will be) an appendix to the data,
// and plaintext cannot be recovered from the signature.
func (c *Ctx) SignUpdate(sh SessionHandle, message []byte) error {
e := C.SignUpdate(c.ctx, C.CK_SESSION_HANDLE(sh), C.CK_BYTE_PTR(unsafe.Pointer(&message[0])), C.CK_ULONG(len(message)))
return toError(e)
}
// SignFinal finishes a multiple-part signature operation returning the signature.
func (c *Ctx) SignFinal(sh SessionHandle) ([]byte, error) {
var (
sig C.CK_BYTE_PTR
siglen C.CK_ULONG
)
e := C.SignFinal(c.ctx, C.CK_SESSION_HANDLE(sh), &sig, &siglen)
if toError(e) != nil {
return nil, toError(e)
}
h := C.GoBytes(unsafe.Pointer(sig), C.int(siglen))
C.free(unsafe.Pointer(sig))
return h, nil
}
// SignRecoverInit initializes a signature operation, where the data can be recovered from the signature.
func (c *Ctx) SignRecoverInit(sh SessionHandle, m []*Mechanism, key ObjectHandle) error {
arena, mech, _ := cMechanismList(m)
defer arena.Free()
e := C.SignRecoverInit(c.ctx, C.CK_SESSION_HANDLE(sh), mech, C.CK_OBJECT_HANDLE(key))
return toError(e)
}
// SignRecover signs data in a single operation, where the data can be recovered from the signature.
func (c *Ctx) SignRecover(sh SessionHandle, data []byte) ([]byte, error) {
var (
sig C.CK_BYTE_PTR
siglen C.CK_ULONG
)
e := C.SignRecover(c.ctx, C.CK_SESSION_HANDLE(sh), C.CK_BYTE_PTR(unsafe.Pointer(&data[0])), C.CK_ULONG(len(data)), &sig, &siglen)
if toError(e) != nil {
return nil, toError(e)
}
h := C.GoBytes(unsafe.Pointer(sig), C.int(siglen))
C.free(unsafe.Pointer(sig))
return h, nil
}
// VerifyInit initializes a verification operation, where the
// signature is an appendix to the data, and plaintext cannot
// be recovered from the signature (e.g. DSA).
func (c *Ctx) VerifyInit(sh SessionHandle, m []*Mechanism, key ObjectHandle) error {
arena, mech, _ := cMechanismList(m) // only use one here
defer arena.Free()
e := C.VerifyInit(c.ctx, C.CK_SESSION_HANDLE(sh), mech, C.CK_OBJECT_HANDLE(key))
return toError(e)
}
// Verify verifies a signature in a single-part operation,
// where the signature is an appendix to the data, and plaintext
// cannot be recovered from the signature.
func (c *Ctx) Verify(sh SessionHandle, data []byte, signature []byte) error {
e := C.Verify(c.ctx, C.CK_SESSION_HANDLE(sh), C.CK_BYTE_PTR(unsafe.Pointer(&data[0])), C.CK_ULONG(len(data)), C.CK_BYTE_PTR(unsafe.Pointer(&signature[0])), C.CK_ULONG(len(signature)))
return toError(e)
}
// VerifyUpdate continues a multiple-part verification
// operation, where the signature is an appendix to the data,
// and plaintext cannot be recovered from the signature.
func (c *Ctx) VerifyUpdate(sh SessionHandle, part []byte) error {
e := C.VerifyUpdate(c.ctx, C.CK_SESSION_HANDLE(sh), C.CK_BYTE_PTR(unsafe.Pointer(&part[0])), C.CK_ULONG(len(part)))
return toError(e)
}
// VerifyFinal finishes a multiple-part verification
// operation, checking the signature.
func (c *Ctx) VerifyFinal(sh SessionHandle, signature []byte) error {
e := C.VerifyFinal(c.ctx, C.CK_SESSION_HANDLE(sh), C.CK_BYTE_PTR(unsafe.Pointer(&signature[0])), C.CK_ULONG(len(signature)))
return toError(e)
}
// VerifyRecoverInit initializes a signature verification
// operation, where the data is recovered from the signature.
func (c *Ctx) VerifyRecoverInit(sh SessionHandle, m []*Mechanism, key ObjectHandle) error {
arena, mech, _ := cMechanismList(m)
defer arena.Free()
e := C.VerifyRecoverInit(c.ctx, C.CK_SESSION_HANDLE(sh), mech, C.CK_OBJECT_HANDLE(key))
return toError(e)
}
// VerifyRecover verifies a signature in a single-part
// operation, where the data is recovered from the signature.
func (c *Ctx) VerifyRecover(sh SessionHandle, signature []byte) ([]byte, error) {
var (
data C.CK_BYTE_PTR
datalen C.CK_ULONG
)
e := C.DecryptVerifyUpdate(c.ctx, C.CK_SESSION_HANDLE(sh), C.CK_BYTE_PTR(unsafe.Pointer(&signature[0])), C.CK_ULONG(len(signature)), &data, &datalen)
if toError(e) != nil {
return nil, toError(e)
}
h := C.GoBytes(unsafe.Pointer(data), C.int(datalen))
C.free(unsafe.Pointer(data))
return h, nil
}
// DigestEncryptUpdate continues a multiple-part digesting and encryption operation.
func (c *Ctx) DigestEncryptUpdate(sh SessionHandle, part []byte) ([]byte, error) {
var (
enc C.CK_BYTE_PTR
enclen C.CK_ULONG
)
e := C.DigestEncryptUpdate(c.ctx, C.CK_SESSION_HANDLE(sh), C.CK_BYTE_PTR(unsafe.Pointer(&part[0])), C.CK_ULONG(len(part)), &enc, &enclen)
if toError(e) != nil {
return nil, toError(e)
}
h := C.GoBytes(unsafe.Pointer(enc), C.int(enclen))
C.free(unsafe.Pointer(enc))
return h, nil
}
// DecryptDigestUpdate continues a multiple-part decryption and digesting operation.
func (c *Ctx) DecryptDigestUpdate(sh SessionHandle, cipher []byte) ([]byte, error) {
var (
part C.CK_BYTE_PTR
partlen C.CK_ULONG
)
e := C.DecryptDigestUpdate(c.ctx, C.CK_SESSION_HANDLE(sh), C.CK_BYTE_PTR(unsafe.Pointer(&cipher[0])), C.CK_ULONG(len(cipher)), &part, &partlen)
if toError(e) != nil {
return nil, toError(e)
}
h := C.GoBytes(unsafe.Pointer(part), C.int(partlen))
C.free(unsafe.Pointer(part))
return h, nil
}
// SignEncryptUpdate continues a multiple-part signing and encryption operation.
func (c *Ctx) SignEncryptUpdate(sh SessionHandle, part []byte) ([]byte, error) {
var (
enc C.CK_BYTE_PTR
enclen C.CK_ULONG
)
e := C.SignEncryptUpdate(c.ctx, C.CK_SESSION_HANDLE(sh), C.CK_BYTE_PTR(unsafe.Pointer(&part[0])), C.CK_ULONG(len(part)), &enc, &enclen)
if toError(e) != nil {
return nil, toError(e)
}
h := C.GoBytes(unsafe.Pointer(enc), C.int(enclen))
C.free(unsafe.Pointer(enc))
return h, nil
}
// DecryptVerifyUpdate continues a multiple-part decryption and verify operation.
func (c *Ctx) DecryptVerifyUpdate(sh SessionHandle, cipher []byte) ([]byte, error) {
var (
part C.CK_BYTE_PTR
partlen C.CK_ULONG
)
e := C.DecryptVerifyUpdate(c.ctx, C.CK_SESSION_HANDLE(sh), C.CK_BYTE_PTR(unsafe.Pointer(&cipher[0])), C.CK_ULONG(len(cipher)), &part, &partlen)
if toError(e) != nil {
return nil, toError(e)
}
h := C.GoBytes(unsafe.Pointer(part), C.int(partlen))
C.free(unsafe.Pointer(part))
return h, nil
}
// GenerateKey generates a secret key, creating a new key object.
func (c *Ctx) GenerateKey(sh SessionHandle, m []*Mechanism, temp []*Attribute) (ObjectHandle, error) {
var key C.CK_OBJECT_HANDLE
attrarena, t, tcount := cAttributeList(temp)
defer attrarena.Free()
mecharena, mech, _ := cMechanismList(m)
defer mecharena.Free()
e := C.GenerateKey(c.ctx, C.CK_SESSION_HANDLE(sh), mech, t, tcount, C.CK_OBJECT_HANDLE_PTR(&key))
e1 := toError(e)
if e1 == nil {
return ObjectHandle(key), nil
}
return 0, e1
}
// GenerateKeyPair generates a public-key/private-key pair creating new key objects.
func (c *Ctx) GenerateKeyPair(sh SessionHandle, m []*Mechanism, public, private []*Attribute) (ObjectHandle, ObjectHandle, error) {
var (
pubkey C.CK_OBJECT_HANDLE
privkey C.CK_OBJECT_HANDLE
)
pubarena, pub, pubcount := cAttributeList(public)
defer pubarena.Free()
privarena, priv, privcount := cAttributeList(private)
defer privarena.Free()
mecharena, mech, _ := cMechanismList(m)
defer mecharena.Free()
e := C.GenerateKeyPair(c.ctx, C.CK_SESSION_HANDLE(sh), mech, pub, pubcount, priv, privcount, C.CK_OBJECT_HANDLE_PTR(&pubkey), C.CK_OBJECT_HANDLE_PTR(&privkey))
e1 := toError(e)
if e1 == nil {
return ObjectHandle(pubkey), ObjectHandle(privkey), nil
}
return 0, 0, e1
}
// WrapKey wraps (i.e., encrypts) a key.
func (c *Ctx) WrapKey(sh SessionHandle, m []*Mechanism, wrappingkey, key ObjectHandle) ([]byte, error) {
var (
wrappedkey C.CK_BYTE_PTR
wrappedkeylen C.CK_ULONG
)
arena, mech, _ := cMechanismList(m)
defer arena.Free()
e := C.WrapKey(c.ctx, C.CK_SESSION_HANDLE(sh), mech, C.CK_OBJECT_HANDLE(wrappingkey), C.CK_OBJECT_HANDLE(key), &wrappedkey, &wrappedkeylen)
if toError(e) != nil {
return nil, toError(e)
}
h := C.GoBytes(unsafe.Pointer(wrappedkey), C.int(wrappedkeylen))
C.free(unsafe.Pointer(wrappedkey))
return h, nil
}
// UnwrapKey unwraps (decrypts) a wrapped key, creating a new key object.
func (c *Ctx) UnwrapKey(sh SessionHandle, m []*Mechanism, unwrappingkey ObjectHandle, wrappedkey []byte, a []*Attribute) (ObjectHandle, error) {
var key C.CK_OBJECT_HANDLE
attrarena, ac, aclen := cAttributeList(a)
defer attrarena.Free()
mecharena, mech, _ := cMechanismList(m)
defer mecharena.Free()
e := C.UnwrapKey(c.ctx, C.CK_SESSION_HANDLE(sh), mech, C.CK_OBJECT_HANDLE(unwrappingkey), C.CK_BYTE_PTR(unsafe.Pointer(&wrappedkey[0])), C.CK_ULONG(len(wrappedkey)), ac, aclen, &key)
return ObjectHandle(key), toError(e)
}
// DeriveKey derives a key from a base key, creating a new key object.
func (c *Ctx) DeriveKey(sh SessionHandle, m []*Mechanism, basekey ObjectHandle, a []*Attribute) (ObjectHandle, error) {
var key C.CK_OBJECT_HANDLE
attrarena, ac, aclen := cAttributeList(a)
defer attrarena.Free()
mecharena, mech, _ := cMechanismList(m)
defer mecharena.Free()
e := C.DeriveKey(c.ctx, C.CK_SESSION_HANDLE(sh), mech, C.CK_OBJECT_HANDLE(basekey), ac, aclen, &key)
return ObjectHandle(key), toError(e)
}
// SeedRandom mixes additional seed material into the token's
// random number generator.
func (c *Ctx) SeedRandom(sh SessionHandle, seed []byte) error {
e := C.SeedRandom(c.ctx, C.CK_SESSION_HANDLE(sh), C.CK_BYTE_PTR(unsafe.Pointer(&seed[0])), C.CK_ULONG(len(seed)))
return toError(e)
}
// GenerateRandom generates random data.
func (c *Ctx) GenerateRandom(sh SessionHandle, length int) ([]byte, error) {
var rand C.CK_BYTE_PTR
e := C.GenerateRandom(c.ctx, C.CK_SESSION_HANDLE(sh), &rand, C.CK_ULONG(length))
if toError(e) != nil {
return nil, toError(e)
}
h := C.GoBytes(unsafe.Pointer(rand), C.int(length))
C.free(unsafe.Pointer(rand))
return h, nil
}
// WaitForSlotEvent returns a channel which returns a slot event
// (token insertion, removal, etc.) when it occurs.
func (c *Ctx) WaitForSlotEvent(flags uint) chan SlotEvent {
sl := make(chan SlotEvent, 1) // hold one element
go c.waitForSlotEventHelper(flags, sl)
return sl
}
func (c *Ctx) waitForSlotEventHelper(f uint, sl chan SlotEvent) {
var slotID C.CK_ULONG
C.WaitForSlotEvent(c.ctx, C.CK_FLAGS(f), &slotID)
sl <- SlotEvent{uint(slotID)}
close(sl) // TODO(miek): Sending and then closing ...?
}