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/*
* X.509 Cert Path Validation
* (C) 2010-2011 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_X509_CERT_PATH_VALIDATION_H__
#define BOTAN_X509_CERT_PATH_VALIDATION_H__
#include <botan/x509cert.h>
#include <botan/certstor.h>
#include <set>
namespace Botan {
/**
* Specifies restrictions on the PKIX path validation
*/
class BOTAN_DLL Path_Validation_Restrictions
{
public:
/**
* @param require_rev if true, revocation information is required
* @param minimum_key_strength is the minimum strength (in terms of
* operations, eg 80 means 2^80) of a signature. Signatures
* weaker than this are rejected.
*/
Path_Validation_Restrictions(bool require_rev = false,
size_t minimum_key_strength = 80);
/**
* @param require_rev if true, revocation information is required
* @param minimum_key_strength is the minimum strength (in terms of
* operations, eg 80 means 2^80) of a signature. Signatures
* weaker than this are rejected.
* @param trusted_hashes a set of trusted hashes. Any signatures
* created using a hash other than one of these will be
* rejected.
*/
Path_Validation_Restrictions(bool require_rev,
size_t minimum_key_strength,
const std::set<std::string>& trusted_hashes) :
m_require_revocation_information(require_rev),
m_trusted_hashes(trusted_hashes),
m_minimum_key_strength(minimum_key_strength) {}
bool require_revocation_information() const
{ return m_require_revocation_information; }
const std::set<std::string>& trusted_hashes() const
{ return m_trusted_hashes; }
size_t minimum_key_strength() const
{ return m_minimum_key_strength; }
private:
bool m_require_revocation_information;
std::set<std::string> m_trusted_hashes;
size_t m_minimum_key_strength;
};
/**
* Represents the result of a PKIX path validation
*/
class BOTAN_DLL Path_Validation_Result
{
public:
/**
* X.509 Certificate Validation Result
*/
enum Code {
VERIFIED,
UNKNOWN_X509_ERROR,
CANNOT_ESTABLISH_TRUST,
CERT_CHAIN_TOO_LONG,
SIGNATURE_ERROR,
POLICY_ERROR,
INVALID_USAGE,
SIGNATURE_METHOD_TOO_WEAK,
UNTRUSTED_HASH,
CERT_MULTIPLE_ISSUERS_FOUND,
CERT_FORMAT_ERROR,
CERT_ISSUER_NOT_FOUND,
CERT_NOT_YET_VALID,
CERT_HAS_EXPIRED,
CERT_IS_REVOKED,
CRL_NOT_FOUND,
CRL_FORMAT_ERROR,
CRL_NOT_YET_VALID,
CRL_HAS_EXPIRED,
CA_CERT_CANNOT_SIGN,
CA_CERT_NOT_FOR_CERT_ISSUER,
CA_CERT_NOT_FOR_CRL_ISSUER
};
/**
* @return the set of hash functions you are implicitly
* trusting by trusting this result.
*/
std::set<std::string> trusted_hashes() const;
/**
* @return the trust root of the validation
*/
const X509_Certificate& trust_root() const;
/**
* @return the full path from subject to trust root
*/
const std::vector<X509_Certificate>& cert_path() const { return m_cert_path; }
/**
* @return true iff the validation was succesful
*/
bool successful_validation() const { return result() == VERIFIED; }
/**
* @return validation result code
*/
Code result() const { return m_result; }
/**
* @return string representation of the validation result
*/
std::string result_string() const;
private:
Path_Validation_Result() : m_result(UNKNOWN_X509_ERROR) {}
friend Path_Validation_Result x509_path_validate(
const std::vector<X509_Certificate>& end_certs,
const Path_Validation_Restrictions& restrictions,
const std::vector<Certificate_Store*>& certstores);
void set_result(Code result) { m_result = result; }
Code m_result;
std::vector<X509_Certificate> m_cert_path;
};
/**
* PKIX Path Validation
*/
Path_Validation_Result BOTAN_DLL x509_path_validate(
const std::vector<X509_Certificate>& end_certs,
const Path_Validation_Restrictions& restrictions,
const std::vector<Certificate_Store*>& certstores);
/**
* PKIX Path Validation
*/
Path_Validation_Result BOTAN_DLL x509_path_validate(
const X509_Certificate& end_cert,
const Path_Validation_Restrictions& restrictions,
const std::vector<Certificate_Store*>& certstores);
/**
* PKIX Path Validation
*/
Path_Validation_Result BOTAN_DLL x509_path_validate(
const X509_Certificate& end_cert,
const Path_Validation_Restrictions& restrictions,
const Certificate_Store& store);
/**
* PKIX Path Validation
*/
Path_Validation_Result BOTAN_DLL x509_path_validate(
const std::vector<X509_Certificate>& end_certs,
const Path_Validation_Restrictions& restrictions,
const Certificate_Store& store);
}
#endif
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