diff options
Diffstat (limited to 'comm/third_party/botan/src/lib/pubkey/dsa/dsa.h')
-rw-r--r-- | comm/third_party/botan/src/lib/pubkey/dsa/dsa.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/comm/third_party/botan/src/lib/pubkey/dsa/dsa.h b/comm/third_party/botan/src/lib/pubkey/dsa/dsa.h new file mode 100644 index 0000000000..b219a1cf37 --- /dev/null +++ b/comm/third_party/botan/src/lib/pubkey/dsa/dsa.h @@ -0,0 +1,87 @@ +/* +* DSA +* (C) 1999-2010 Jack Lloyd +* +* Botan is released under the Simplified BSD License (see license.txt) +*/ + +#ifndef BOTAN_DSA_H_ +#define BOTAN_DSA_H_ + +#include <botan/dl_algo.h> + +namespace Botan { + +/** +* DSA Public Key +*/ +class BOTAN_PUBLIC_API(2,0) DSA_PublicKey : public virtual DL_Scheme_PublicKey + { + public: + std::string algo_name() const override { return "DSA"; } + + DL_Group::Format group_format() const override { return DL_Group::ANSI_X9_57; } + size_t message_parts() const override { return 2; } + size_t message_part_size() const override { return group_q().bytes(); } + + /** + * Load a public key. + * @param alg_id the X.509 algorithm identifier + * @param key_bits DER encoded public key bits + */ + DSA_PublicKey(const AlgorithmIdentifier& alg_id, + const std::vector<uint8_t>& key_bits) : + DL_Scheme_PublicKey(alg_id, key_bits, DL_Group::ANSI_X9_57) + { + } + + /** + * Create a public key. + * @param group the underlying DL group + * @param y the public value y = g^x mod p + */ + DSA_PublicKey(const DL_Group& group, const BigInt& y); + + std::unique_ptr<PK_Ops::Verification> + create_verification_op(const std::string& params, + const std::string& provider) const override; + protected: + DSA_PublicKey() = default; + }; + +/** +* DSA Private Key +*/ +class BOTAN_PUBLIC_API(2,0) DSA_PrivateKey final : public DSA_PublicKey, + public virtual DL_Scheme_PrivateKey + { + public: + /** + * Load a private key. + * @param alg_id the X.509 algorithm identifier + * @param key_bits DER encoded key bits in ANSI X9.57 format + */ + DSA_PrivateKey(const AlgorithmIdentifier& alg_id, + const secure_vector<uint8_t>& key_bits); + + /** + * Create a private key. + * @param rng the RNG to use + * @param group the underlying DL group + * @param private_key the private key (if zero, a new random key is generated) + */ + DSA_PrivateKey(RandomNumberGenerator& rng, + const DL_Group& group, + const BigInt& private_key = 0); + + bool check_key(RandomNumberGenerator& rng, bool strong) const override; + + std::unique_ptr<PK_Ops::Signature> + create_signature_op(RandomNumberGenerator& rng, + const std::string& params, + const std::string& provider) const override; + }; + +} + +#endif |