1 /*
2 * Certificate Store in SQL
3 * (C) 2016 Kai Michaelis, Rohde & Schwarz Cybersecurity
4 *
5 * Botan is released under the Simplified BSD License (see license.txt)
6 */
7 
8 #ifndef BOTAN_CERT_STORE_SQL_H_
9 #define BOTAN_CERT_STORE_SQL_H_
10 
11 #include <botan/certstor.h>
12 #include <botan/x509cert.h>
13 #include <botan/x509_crl.h>
14 #include <botan/database.h>
15 #include <botan/mutex.h>
16 
17 namespace Botan {
18 
19 class Private_Key;
20 class RandomNumberGenerator;
21 
22 /**
23  * Certificate and private key store backed by an SQL database.
24  */
25 class BOTAN_PUBLIC_API(2,0) Certificate_Store_In_SQL : public Certificate_Store
26    {
27    public:
28       /**
29       * Create/open a certificate store.
30       * @param db underlying database storage
31       * @param passwd password to encrypt private keys in the database
32       * @param rng used for encrypting keys
33       * @param table_prefix optional prefix for db table names
34       */
35       explicit Certificate_Store_In_SQL(const std::shared_ptr<SQL_Database> db,
36                                         const std::string& passwd,
37                                         RandomNumberGenerator& rng,
38                                         const std::string& table_prefix = "");
39 
40       /**
41       * Returns the first certificate with matching subject DN and optional key ID.
42       */
43       std::shared_ptr<const X509_Certificate>
44          find_cert(const X509_DN& subject_dn, const std::vector<uint8_t>& key_id) const override;
45 
46       /*
47       * Find all certificates with a given Subject DN.
48       * Subject DN and even the key identifier might not be unique.
49       */
50       std::vector<std::shared_ptr<const X509_Certificate>> find_all_certs(
51          const X509_DN& subject_dn, const std::vector<uint8_t>& key_id) const override;
52 
53       std::shared_ptr<const X509_Certificate>
54          find_cert_by_pubkey_sha1(const std::vector<uint8_t>& key_hash) const override;
55 
56       std::shared_ptr<const X509_Certificate>
57          find_cert_by_raw_subject_dn_sha256(const std::vector<uint8_t>& subject_hash) const override;
58 
59       /**
60       * Returns all subject DNs known to the store instance.
61       */
62       std::vector<X509_DN> all_subjects() const override;
63 
64       /**
65       * Inserts "cert" into the store, returns false if the certificate is
66       * already known and true if insertion was successful.
67       */
68       bool insert_cert(const X509_Certificate& cert);
69 
70       /**
71       * Removes "cert" from the store. Returns false if the certificate could not
72       * be found and true if removal was successful.
73       */
74       bool remove_cert(const X509_Certificate& cert);
75 
76       /// Returns the private key for "cert" or an empty shared_ptr if none was found.
77       std::shared_ptr<const Private_Key> find_key(const X509_Certificate&) const;
78 
79       /// Returns all certificates for private key "key".
80       std::vector<std::shared_ptr<const X509_Certificate>>
81          find_certs_for_key(const Private_Key& key) const;
82 
83       /**
84       * Inserts "key" for "cert" into the store, returns false if the key is
85       * already known and true if insertion was successful.
86       */
87       bool insert_key(const X509_Certificate& cert, const Private_Key& key);
88 
89       /// Removes "key" from the store.
90       void remove_key(const Private_Key& key);
91 
92       /// Marks "cert" as revoked starting from "time".
93       void revoke_cert(const X509_Certificate&, CRL_Code, const X509_Time& time = X509_Time());
94 
95       /// Reverses the revokation for "cert".
96       void affirm_cert(const X509_Certificate&);
97 
98       /**
99       * Generates Certificate Revocation Lists for all certificates marked as revoked.
100       * A CRL is returned for each unique issuer DN.
101       */
102       std::vector<X509_CRL> generate_crls() const;
103 
104       /**
105       * Generates a CRL for all certificates issued by the given issuer.
106       */
107       std::shared_ptr<const X509_CRL>
108          find_crl_for(const X509_Certificate& issuer) const override;
109 
110    private:
111       RandomNumberGenerator& m_rng;
112       std::shared_ptr<SQL_Database> m_database;
113       std::string m_prefix;
114       std::string m_password;
115       mutex_type m_mutex;
116    };
117 
118 }
119 #endif
120