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+/**
+ * \file x509.h
+ *
+ * Based on XySSL: Copyright (C) 2006-2008 Christophe Devine
+ *
+ * Copyright (C) 2009 Paul Bakker <polarssl_maintainer at polarssl dot org>
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the names of PolarSSL or XySSL nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef POLARSSL_X509_H
+#define POLARSSL_X509_H
+
+#include "polarssl/rsa.h"
+
+#define POLARSSL_ERR_ASN1_OUT_OF_DATA -0x0014
+#define POLARSSL_ERR_ASN1_UNEXPECTED_TAG -0x0016
+#define POLARSSL_ERR_ASN1_INVALID_LENGTH -0x0018
+#define POLARSSL_ERR_ASN1_LENGTH_MISMATCH -0x001A
+#define POLARSSL_ERR_ASN1_INVALID_DATA -0x001C
+
+#define POLARSSL_ERR_X509_FEATURE_UNAVAILABLE -0x0020
+#define POLARSSL_ERR_X509_CERT_INVALID_PEM -0x0040
+#define POLARSSL_ERR_X509_CERT_INVALID_FORMAT -0x0060
+#define POLARSSL_ERR_X509_CERT_INVALID_VERSION -0x0080
+#define POLARSSL_ERR_X509_CERT_INVALID_SERIAL -0x00A0
+#define POLARSSL_ERR_X509_CERT_INVALID_ALG -0x00C0
+#define POLARSSL_ERR_X509_CERT_INVALID_NAME -0x00E0
+#define POLARSSL_ERR_X509_CERT_INVALID_DATE -0x0100
+#define POLARSSL_ERR_X509_CERT_INVALID_PUBKEY -0x0120
+#define POLARSSL_ERR_X509_CERT_INVALID_SIGNATURE -0x0140
+#define POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS -0x0160
+#define POLARSSL_ERR_X509_CERT_UNKNOWN_VERSION -0x0180
+#define POLARSSL_ERR_X509_CERT_UNKNOWN_SIG_ALG -0x01A0
+#define POLARSSL_ERR_X509_CERT_UNKNOWN_PK_ALG -0x01C0
+#define POLARSSL_ERR_X509_CERT_SIG_MISMATCH -0x01E0
+#define POLARSSL_ERR_X509_CERT_VERIFY_FAILED -0x0200
+#define POLARSSL_ERR_X509_KEY_INVALID_PEM -0x0220
+#define POLARSSL_ERR_X509_KEY_INVALID_VERSION -0x0240
+#define POLARSSL_ERR_X509_KEY_INVALID_FORMAT -0x0260
+#define POLARSSL_ERR_X509_KEY_INVALID_ENC_IV -0x0280
+#define POLARSSL_ERR_X509_KEY_UNKNOWN_ENC_ALG -0x02A0
+#define POLARSSL_ERR_X509_KEY_PASSWORD_REQUIRED -0x02C0
+#define POLARSSL_ERR_X509_KEY_PASSWORD_MISMATCH -0x02E0
+#define POLARSSL_ERR_X509_POINT_ERROR -0x0300
+#define POLARSSL_ERR_X509_VALUE_TO_LENGTH -0x0320
+
+#define BADCERT_EXPIRED 1
+#define BADCERT_REVOKED 2
+#define BADCERT_CN_MISMATCH 4
+#define BADCERT_NOT_TRUSTED 8
+
+/*
+ * DER constants
+ */
+#define ASN1_BOOLEAN 0x01
+#define ASN1_INTEGER 0x02
+#define ASN1_BIT_STRING 0x03
+#define ASN1_OCTET_STRING 0x04
+#define ASN1_NULL 0x05
+#define ASN1_OID 0x06
+#define ASN1_UTF8_STRING 0x0C
+#define ASN1_SEQUENCE 0x10
+#define ASN1_SET 0x11
+#define ASN1_PRINTABLE_STRING 0x13
+#define ASN1_T61_STRING 0x14
+#define ASN1_IA5_STRING 0x16
+#define ASN1_UTC_TIME 0x17
+#define ASN1_UNIVERSAL_STRING 0x1C
+#define ASN1_BMP_STRING 0x1E
+#define ASN1_PRIMITIVE 0x00
+#define ASN1_CONSTRUCTED 0x20
+#define ASN1_CONTEXT_SPECIFIC 0x80
+
+/*
+ * various object identifiers
+ */
+#define X520_COMMON_NAME 3
+#define X520_COUNTRY 6
+#define X520_LOCALITY 7
+#define X520_STATE 8
+#define X520_ORGANIZATION 10
+#define X520_ORG_UNIT 11
+#define PKCS9_EMAIL 1
+
+#define X509_OUTPUT_DER 0x01
+#define X509_OUTPUT_PEM 0x02
+#define PEM_LINE_LENGTH 72
+#define X509_ISSUER 0x01
+#define X509_SUBJECT 0x02
+
+#define OID_X520 "\x55\x04"
+#define OID_CN "\x55\x04\x03"
+#define OID_PKCS1 "\x2A\x86\x48\x86\xF7\x0D\x01\x01"
+#define OID_PKCS1_RSA "\x2A\x86\x48\x86\xF7\x0D\x01\x01\x01"
+#define OID_PKCS1_RSA_SHA "\x2A\x86\x48\x86\xF7\x0D\x01\x01\x05"
+#define OID_PKCS9 "\x2A\x86\x48\x86\xF7\x0D\x01\x09"
+#define OID_PKCS9_EMAIL "\x2A\x86\x48\x86\xF7\x0D\x01\x09\x01"
+
+/*
+ * Structures for parsing X.509 certificates
+ */
+typedef struct _x509_buf
+{
+ int tag;
+ int len;
+ unsigned char *p;
+}
+x509_buf;
+
+typedef struct _x509_name
+{
+ x509_buf oid;
+ x509_buf val;
+ struct _x509_name *next;
+}
+x509_name;
+
+typedef struct _x509_time
+{
+ int year, mon, day;
+ int hour, min, sec;
+}
+x509_time;
+
+typedef struct _x509_cert
+{
+ x509_buf raw;
+ x509_buf tbs;
+
+ int version;
+ x509_buf serial;
+ x509_buf sig_oid1;
+
+ x509_buf issuer_raw;
+ x509_buf subject_raw;
+
+ x509_name issuer;
+ x509_name subject;
+
+ x509_time valid_from;
+ x509_time valid_to;
+
+ x509_buf pk_oid;
+ rsa_context rsa;
+
+ x509_buf issuer_id;
+ x509_buf subject_id;
+ x509_buf v3_ext;
+
+ int ca_istrue;
+ int max_pathlen;
+
+ x509_buf sig_oid2;
+ x509_buf sig;
+
+ struct _x509_cert *next;
+}
+x509_cert;
+
+/*
+ * Structures for writing X.509 certificates
+ */
+typedef struct _x509_node
+{
+ unsigned char *data;
+ unsigned char *p;
+ unsigned char *end;
+
+ size_t len;
+}
+x509_node;
+
+typedef struct _x509_raw
+{
+ x509_node raw;
+ x509_node tbs;
+
+ x509_node version;
+ x509_node serial;
+ x509_node tbs_signalg;
+ x509_node issuer;
+ x509_node validity;
+ x509_node subject;
+ x509_node subpubkey;
+
+ x509_node signalg;
+ x509_node sign;
+}
+x509_raw;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * \brief Parse one or more certificates and add them
+ * to the chained list
+ *
+ * \param chain points to the start of the chain
+ * \param buf buffer holding the certificate data
+ * \param buflen size of the buffer
+ *
+ * \return 0 if successful, or a specific X509 error code
+ */
+int x509parse_crt( x509_cert *crt, unsigned char *buf, int buflen );
+
+/**
+ * \brief Load one or more certificates and add them
+ * to the chained list
+ *
+ * \param chain points to the start of the chain
+ * \param path filename to read the certificates from
+ *
+ * \return 0 if successful, or a specific X509 error code
+ */
+int x509parse_crtfile( x509_cert *crt, char *path );
+
+/**
+ * \brief Parse a private RSA key
+ *
+ * \param rsa RSA context to be initialized
+ * \param buf input buffer
+ * \param buflen size of the buffer
+ * \param pwd password for decryption (optional)
+ * \param pwdlen size of the password
+ *
+ * \return 0 if successful, or a specific X509 error code
+ */
+int x509parse_key( rsa_context *rsa,
+ unsigned char *buf, int buflen,
+ unsigned char *pwd, int pwdlen );
+
+/**
+ * \brief Load and parse a private RSA key
+ *
+ * \param rsa RSA context to be initialized
+ * \param path filename to read the private key from
+ * \param pwd password to decrypt the file (can be NULL)
+ *
+ * \return 0 if successful, or a specific X509 error code
+ */
+int x509parse_keyfile( rsa_context *rsa, char *path, char *password );
+
+/**
+ * \brief Store the certificate DN in printable form into buf;
+ * no more than (end - buf) characters will be written.
+ */
+int x509parse_dn_gets( char *buf, char *end, x509_name *dn );
+
+/**
+ * \brief Returns an informational string about the
+ * certificate.
+ */
+char *x509parse_cert_info( char *prefix, x509_cert *crt );
+
+/**
+ * \brief Return 0 if the certificate is still valid,
+ * or BADCERT_EXPIRED
+ */
+int x509parse_expired( x509_cert *crt );
+
+/**
+ * \brief Verify the certificate signature
+ *
+ * \param crt a certificate to be verified
+ * \param trust_ca the trusted CA chain
+ * \param cn expected Common Name (can be set to
+ * NULL if the CN must not be verified)
+ * \param flags result of the verification
+ *
+ * \return 0 if successful or POLARSSL_ERR_X509_SIG_VERIFY_FAILED,
+ * in which case *flags will have one or more of
+ * the following values set:
+ * BADCERT_EXPIRED --
+ * BADCERT_REVOKED --
+ * BADCERT_CN_MISMATCH --
+ * BADCERT_NOT_TRUSTED
+ *
+ * \note TODO: add two arguments, depth and crl
+ */
+int x509parse_verify( x509_cert *crt,
+ x509_cert *trust_ca,
+ char *cn, int *flags );
+
+/**
+ * \brief Unallocate all certificate data
+ */
+void x509_free( x509_cert *crt );
+
+/**
+ * \brief Checkup routine
+ *
+ * \return 0 if successful, or 1 if the test failed
+ */
+int x509_self_test( int verbose );
+
+/**
+ * \brief Write a certificate info file
+ *
+ * \param chain points to the raw certificate data
+ * \param path filename to write the certificate to
+ * \param format X509_OUTPUT_DER or X509_OUTPUT_PEM
+ *
+ * \return 0 if successful, or a specific X509 error code
+ */
+int x509write_crtfile( x509_raw *chain,
+ unsigned char *path,
+ int format );
+
+/**
+ * \brief Write a certificate signing request message format file
+ *
+ * \param chain points to the raw certificate (with x509write_create_csr) data
+ * \param path filename to write the certificate to
+ * \param format X509_OUTPUT_DER or X509_OUTPUT_PEM
+ *
+ * \return 0 if successful, or a specific X509 error code
+ */
+int x509write_csrfile( x509_raw *chain,
+ unsigned char *path,
+ int format );
+
+/*
+ * \brief Write a private RSA key into a file
+ *
+ * \param rsa points to an RSA key
+ * \param path filename to write the key to
+ * \param format X509_OUTPUT_DER or X509_OUTPUT_PEM
+ *
+ * \return 0 if successful, or a specific X509 error code
+ */
+int x509write_keyfile( rsa_context *rsa,
+ char *path,
+ int format );
+
+/**
+ * \brief Add a public key to certificate
+ *
+ * \param chain points to the raw certificate data
+ * \param pubkey points to an RSA key
+ *
+ * \return 0 if successful, or a specific X509 error code
+ */
+int x509write_add_pubkey( x509_raw *chain, rsa_context *pubkey );
+
+/**
+ * \brief Create x509 subject/issuer field to raw certificate
+ * from string or CA cert. Make string NULL if you will
+ * use the CA copy function or make CA NULL then used
+ * the string parse.
+ *
+ * \param chain points to the raw certificate data
+ * \param names a string that can hold (separete with ";"):
+ * CN=CommonName
+ * -- O=Organization
+ * -- OU=OrgUnit
+ * -- ST=State
+ * -- L=Locality
+ * -- R=Email
+ * -- C=Country
+ * . Make that NULL if you didn't need that.
+ * \param flag flag is X509_ISSUER or X509_SUBJECT that defined
+ * where change
+ * \param ca the certificate for copy data. Make that NULL if you
+ * didn't need that.
+ * \param ca_flag set the ca field from copy to crt
+ *
+ * \return 0 if successful, or a specific X509 error code
+ */
+int x509write_add_customize ( x509_raw *crt,
+ unsigned char *names,
+ int flag,
+ x509_cert *ca,
+ int ca_flag );
+
+/**
+* \brief Add x509 issuer field
+*
+* \param chain points to the raw certificate data
+* \param issuer a string holding (separete with ";"):
+* CN=CommonName
+* -- O=Organization
+* -- OU=OrgUnit
+* -- ST=State
+* -- L=Locality
+* -- R=Email
+* -- C=Country
+* . Set this to NULL if not needed.
+* \return 0 if successful, or a specific X509 error code
+*/
+int x509write_add_issuer( x509_raw *crt, unsigned char *issuer);
+
+/**
+ * \brief Add x509 subject field
+ *
+ * \param chain points to the raw certificate data
+ * \param subject a string holding (separete with ";"):
+ * CN=CommonName
+ * -- O=Organization
+ * -- OU=OrgUnit
+ * -- ST=State
+ * -- L=Locality
+ * -- R=Email
+ * -- C=Country
+ * . Set this to NULL if not needed.
+ * \return 0 if successful, or a specific X509 error code
+ */
+int x509write_add_subject( x509_raw *crt, unsigned char *subject);
+
+/**
+* \brief Copy x509 issuer field from another certificate
+*
+* \param chain points to the raw certificate data
+* \param from_crt the certificate whose issuer is to be copied.
+* \return 0 if successful, or a specific X509 error code
+*/
+int x509write_copy_issuer(x509_raw *crt, x509_cert *from_crt);
+
+/**
+* \brief Copy x509 subject field from another certificate
+*
+* \param chain points to the raw certificate data
+* \param from_crt the certificate whose subject is to be copied.
+* \return 0 if successful, or a specific X509 error code
+*/
+int x509write_copy_subject(x509_raw *crt, x509_cert *from_crt);
+
+/**
+* \brief Copy x509 issuer field from the subject of another certificate
+*
+* \param chain points to the raw certificate data
+* \param from_crt the certificate whose subject is to be copied.
+* \return 0 if successful, or a specific X509 error code
+*/
+int x509write_copy_issuer_from_subject(x509_raw *crt, x509_cert *from_crt);
+
+/**
+* \brief Copy x509 subject field from the issuer of another certificate
+*
+* \param chain points to the raw certificate data
+* \param from_crt the certificate whose issuer is to be copied.
+* \return 0 if successful, or a specific X509 error code
+*/
+int x509write_copy_subject_from_issuer(x509_raw *crt, x509_cert *from_crt);
+
+/**
+ * \brief Create x509 validity time in UTC
+ *
+ * \param chain points to the raw certificate data
+ * \param before valid not before in format YYYY-MM-DD hh:mm:ss
+ * \param after valid not after in format YYYY-MM-DD hh:mm:ss
+ *
+ * \return 0 if successful, or a specific X509 error code
+ */
+int x509write_add_validity( x509_raw *crt,
+ unsigned char *before,
+ unsigned char *after );
+
+/**
+ * \brief Create a self-signed certificate
+ *
+ * \param chain points to the raw certificate data
+ * \param rsa a private key to sign the certificate
+ *
+ * \return 0 if successful, or a specific X509 error code
+ */
+int x509write_create_selfsign( x509_raw *crt, rsa_context *raw );
+
+/**
+ * \brief Create a certificate
+ *
+ * \param chain points to the raw certificate data
+ * \param rsa a private key to sign the certificate
+ *
+ * \return 0 if successful, or a specific X509 error code
+ */
+int x509write_create_sign( x509_raw *crt, rsa_context *raw );
+
+/**
+ * \brief Create a certificate signing request
+ *
+ * \param chain points to the raw certificate data. Didn't use the
+ * same chain that u have use for certificate.
+ * \param privkey a rsa private key
+ *
+ * \return 0 if successful, or a specific X509 error code
+ */
+int x509write_create_csr( x509_raw *chain, rsa_context *privkey );
+
+/**
+ * \brief Serialize an rsa key into DER
+ *
+ * \param rsa a rsa key for output
+ * \param node a x509 node for write into
+ *
+ * \return 0 if successful, or a specific X509 error code
+ */
+int x509write_serialize_key( rsa_context *rsa, x509_node *node );
+
+/**
+ * \brief Unallocate all raw certificate data
+ */
+void x509write_free_raw( x509_raw *crt );
+
+/**
+ * \brief Allocate all raw certificate data
+ */
+void x509write_init_raw( x509_raw *crt );
+
+/**
+ * \brief Unallocate all node certificate data
+ */
+void x509write_free_node( x509_node *crt_node );
+
+/**
+ * \brief Allocate all node certificate data
+ */
+void x509write_init_node( x509_node *crt_node );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* x509.h */