/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef OXS_SIGNATURE_H
#define OXS_SIGNATURE_H


/**
  * @file oxs_signature.h
  * @brief Does the XML Signature for OMXMLSecurity  
  */

/**
* @defgroup oxs_signature Signature
* @ingroup oxs
* @{
*/
#include <axis2_defines.h>
#include <oxs_ctx.h>
#include <axutil_env.h>
#include <axiom_node.h>
#include <axiom_element.h>
#include <axutil_qname.h>
#include <oxs_sign_ctx.h>

#ifdef __cplusplus
extern "C"
{
#endif
    /**
     * Signs an input buffer @input using the HMAC-SHA1 algorithm.
     * The secret will be taken form the signature context @sign_ctx
     * Result will be placed in output buffer @output
     * @env pointer to environment struct
     * @sign_ctx the signature context
     * @input input buffer
     * @output output buffer
     * @return AXIS2_SUCCESS on success, else AXIS2_FAILURE
     */
    AXIS2_EXTERN axis2_status_t AXIS2_CALL
    oxs_sig_sign_hmac_sha1(const axutil_env_t *env,
                      oxs_sign_ctx_t *sign_ctx,
                      oxs_buffer_t *input,
                      oxs_buffer_t *output);

    /**
     * Signs an input buffer @input using the RSA-SHA1 algorithm.
     * Result will be placed in output buffer @output
     * @env pointer to environment struct
     * @sign_ctx the signature context
     * @input input buffer
     * @output output buffer
     * @return AXIS2_SUCCESS on success, else AXIS2_FAILURE
     */
    AXIS2_EXTERN axis2_status_t AXIS2_CALL
    oxs_sig_sign_rsa_sha1(const axutil_env_t *env,
                          oxs_sign_ctx_t *sign_ctx,
                          oxs_buffer_t *input,
                          oxs_buffer_t *output);

    /**
     * Signs a content placed in @input buf using the information
     * available in the signature context @sign_ctx.
     * The result will be placed in the buffer @output.
     * Note that the result is base64 encoded.
     * @env pointer to environment struct
     * @sign_ctx the signature context
     * @input input buffer
     * @output output buffer
     * @return AXIS2_SUCCESS on success, else AXIS2_FAILURE
     */
    AXIS2_EXTERN axis2_status_t AXIS2_CALL
    oxs_sig_sign(const axutil_env_t *env,
                 oxs_sign_ctx_t *sign_ctx,
                 oxs_buffer_t *input,
                 oxs_buffer_t *output);

    /**
     * Verifies a @signature with @content using the information
     * available in the signature content @sign_ctx.
     * Note that the signature should be the base64 encoded value of a digital signature.
     * @env pointer to environment struct
     * @sign_ctx the signature context
     * @content the content that's signed
     * @signature the signature value
     * @return AXIS2_SUCCESS on success, else AXIS2_FAILURE
     */
    AXIS2_EXTERN axis2_status_t AXIS2_CALL
    oxs_sig_verify(const axutil_env_t *env,
                   oxs_sign_ctx_t *sign_ctx,
                   axis2_char_t *content,
                   axis2_char_t *signature);
    /**
     * Verifies @signature with @content using the information
     * available in the signature content @sign_ctx as per the HMA-SHA1 algorithm
     * @env pointer to environment struct
     * @sign_ctx the signature context
     * @content the content that's signed
     * @signature the signature value
     * @return AXIS2_SUCCESS on success, else AXIS2_FAILURE
     */
    AXIS2_EXTERN axis2_status_t AXIS2_CALL
    oxs_sig_verify_hmac_sha1(const axutil_env_t *env,
               oxs_sign_ctx_t *sign_ctx,
               axis2_char_t *content,
               axis2_char_t *signature);

    /**
     * Verifies @signature with @content using the information
     * available in the signature content @sign_ctx as per the RSA-SHA1 algorithm
     * @env pointer to environment struct
     * @sign_ctx the signature context
     * @content the content that's signed
     * @signature the signature value
     * @return AXIS2_SUCCESS on success, else AXIS2_FAILURE
     */
    AXIS2_EXTERN axis2_status_t AXIS2_CALL
    oxs_sig_verify_rsa_sha1(const axutil_env_t *env,
               oxs_sign_ctx_t *sign_ctx,
               axis2_char_t *content,
               axis2_char_t *signature);

    /** @} */
#ifdef __cplusplus
}
#endif

#endif                          /* OXS_SIGNATURE_H */