dig_mgr.c revision ab8176c2544f70ca46c1ce370963d426561222b3
/*
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* (C) COPYRIGHT International Business Machines Corp. 2001, 2002
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Digest manager routines
*/
#include "tpmtok_int.h"
CK_RV
digest_mgr_init(SESSION *sess,
DIGEST_CONTEXT *ctx,
CK_MECHANISM *mech)
{
if (! sess || ! ctx) {
return (CKR_FUNCTION_FAILED);
}
if (ctx->active != FALSE) {
return (CKR_OPERATION_ACTIVE);
}
switch (mech->mechanism) {
case CKM_SHA_1:
{
ctx->context_len = sizeof (SHA1_CTX);
ctx->context.sha1ctx = (SHA1_CTX *)
malloc(ctx->context_len);
if (!ctx->context.sha1ctx)
return (CKR_HOST_MEMORY);
SHA1Init(ctx->context.sha1ctx);
}
break;
case CKM_MD5:
{
ctx->context_len = sizeof (MD5_CTX);
ctx->context.md5ctx = (MD5_CTX *)
malloc(ctx->context_len);
if (! ctx->context.md5ctx) {
return (CKR_HOST_MEMORY);
}
MD5Init(ctx->context.md5ctx);
}
break;
default:
return (CKR_MECHANISM_INVALID);
}
ctx->mech.ulParameterLen = mech->ulParameterLen;
ctx->mech.mechanism = mech->mechanism;
ctx->mech.pParameter = mech->pParameter;
ctx->multi = FALSE;
ctx->active = TRUE;
return (CKR_OK);
}
CK_RV
digest_mgr_cleanup(DIGEST_CONTEXT *ctx)
{
if (!ctx) {
return (CKR_FUNCTION_FAILED);
}
if (ctx->mech.mechanism == CKM_MD5) {
free(ctx->context.md5ctx);
ctx->context.md5ctx = NULL;
} else if (ctx->mech.mechanism == CKM_SHA_1) {
free(ctx->context.sha1ctx);
ctx->context.sha1ctx = NULL;
}
ctx->mech.ulParameterLen = 0;
ctx->mech.pParameter = NULL;
ctx->mech.mechanism = 0;
ctx->multi = FALSE;
ctx->active = FALSE;
ctx->context_len = 0;
return (CKR_OK);
}
CK_RV
digest_mgr_digest(SESSION *sess,
CK_BBOOL length_only,
DIGEST_CONTEXT *ctx,
CK_BYTE *in_data,
CK_ULONG in_data_len,
CK_BYTE *out_data,
CK_ULONG *out_data_len)
{
if (! sess || ! ctx) {
return (CKR_FUNCTION_FAILED);
}
if (ctx->active == FALSE) {
return (CKR_OPERATION_NOT_INITIALIZED);
}
if ((length_only == FALSE) && (! in_data || ! out_data)) {
return (CKR_FUNCTION_FAILED);
}
if (ctx->multi == TRUE) {
return (CKR_OPERATION_ACTIVE);
}
switch (ctx->mech.mechanism) {
case CKM_SHA_1:
if (!length_only && *out_data_len < SHA1_DIGEST_LENGTH)
return (CKR_BUFFER_TOO_SMALL);
return (sha1_hash(sess, length_only, ctx,
in_data, in_data_len, out_data, out_data_len));
case CKM_MD5:
if (!length_only && *out_data_len < MD5_DIGEST_LENGTH)
return (CKR_BUFFER_TOO_SMALL);
return (md5_hash(sess, length_only, ctx,
in_data, in_data_len, out_data, out_data_len));
default:
return (CKR_FUNCTION_FAILED);
}
}
CK_RV
digest_mgr_digest_update(SESSION *sess,
DIGEST_CONTEXT *ctx,
CK_BYTE *data,
CK_ULONG data_len)
{
if (! sess || ! ctx) {
return (CKR_FUNCTION_FAILED);
}
if (ctx->active == FALSE) {
return (CKR_OPERATION_NOT_INITIALIZED);
}
ctx->multi = TRUE;
switch (ctx->mech.mechanism) {
case CKM_SHA_1:
SHA1Update(ctx->context.sha1ctx, data, data_len);
return (CKR_OK);
case CKM_MD5:
MD5Update(ctx->context.md5ctx, data, data_len);
return (CKR_OK);
default:
return (CKR_MECHANISM_INVALID);
}
}
CK_RV
digest_mgr_digest_key(SESSION * sess,
DIGEST_CONTEXT *ctx,
CK_OBJECT_HANDLE key_handle)
{
CK_ATTRIBUTE *attr = NULL;
OBJECT * key_obj = NULL;
CK_OBJECT_CLASS class;
CK_RV rc;
if (!sess || !ctx) {
return (CKR_FUNCTION_FAILED);
}
rc = object_mgr_find_in_map1(sess->hContext, key_handle, &key_obj);
if (rc != CKR_OK) {
return (CKR_KEY_HANDLE_INVALID);
}
rc = template_attribute_find(key_obj->template, CKA_CLASS, &attr);
if (rc == FALSE)
return (CKR_KEY_INDIGESTIBLE);
else
class = *(CK_OBJECT_CLASS *)attr->pValue;
if (class != CKO_SECRET_KEY)
return (CKR_KEY_INDIGESTIBLE);
rc = template_attribute_find(key_obj->template, CKA_VALUE, &attr);
if (! rc)
return (CKR_KEY_INDIGESTIBLE);
rc = digest_mgr_digest_update(sess,
ctx, attr->pValue, attr->ulValueLen);
return (rc);
}
CK_RV
digest_mgr_digest_final(SESSION *sess,
DIGEST_CONTEXT *ctx,
CK_BYTE *hash,
CK_ULONG *hash_len)
{
if (! sess || ! ctx) {
return (CKR_FUNCTION_FAILED);
}
if (ctx->active == FALSE) {
return (CKR_OPERATION_NOT_INITIALIZED);
}
ctx->multi = FALSE;
if (hash == NULL && hash_len == NULL)
return (CKR_ARGUMENTS_BAD);
switch (ctx->mech.mechanism) {
case CKM_SHA_1:
if (hash == NULL) {
*hash_len = SHA1_DIGEST_LENGTH;
return (CKR_OK);
}
if (*hash_len < SHA1_DIGEST_LENGTH)
return (CKR_BUFFER_TOO_SMALL);
SHA1Final(hash, ctx->context.sha1ctx);
if (hash_len)
*hash_len = SHA1_DIGEST_LENGTH;
return (CKR_OK);
case CKM_MD5:
if (hash == NULL) {
*hash_len = MD5_DIGEST_LENGTH;
return (CKR_OK);
}
if (*hash_len < MD5_DIGEST_LENGTH)
return (CKR_BUFFER_TOO_SMALL);
MD5Final(hash, ctx->context.md5ctx);
if (hash_len)
*hash_len = MD5_DIGEST_LENGTH;
return (CKR_OK);
default:
return (CKR_MECHANISM_INVALID);
}
}