diff options
Diffstat (limited to 'comm/third_party/botan/src/lib/pk_pad/iso9796/iso9796.h')
-rw-r--r-- | comm/third_party/botan/src/lib/pk_pad/iso9796/iso9796.h | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/comm/third_party/botan/src/lib/pk_pad/iso9796/iso9796.h b/comm/third_party/botan/src/lib/pk_pad/iso9796/iso9796.h new file mode 100644 index 0000000000..9782e53b23 --- /dev/null +++ b/comm/third_party/botan/src/lib/pk_pad/iso9796/iso9796.h @@ -0,0 +1,98 @@ +/* + * ISO-9796-2 - Digital signature schemes giving message recovery schemes 2 and 3 + * (C) 2016 Tobias Niemann, Hackmanit GmbH + * + * Botan is released under the Simplified BSD License (see license.txt) + */ + +#ifndef BOTAN_ISO9796_H_ +#define BOTAN_ISO9796_H_ + +#include <botan/emsa.h> +#include <botan/hash.h> + +BOTAN_FUTURE_INTERNAL_HEADER(iso9796.h) + +namespace Botan { + +/** +* ISO-9796-2 - Digital signature scheme 2 (probabilistic) +*/ +class BOTAN_PUBLIC_API(2,0) ISO_9796_DS2 final : public EMSA + { + public: + /** + * @param hash function to use + * @param implicit whether or not the trailer is implicit + */ + explicit ISO_9796_DS2(HashFunction* hash, bool implicit = false) : m_hash(hash), m_implicit(implicit), + m_SALT_SIZE(hash->output_length()) {} + + /** + * @param hash function to use + * @param implicit whether or not the trailer is implicit + * @param salt_size size of the salt to use in bytes + */ + ISO_9796_DS2(HashFunction* hash, bool implicit, size_t salt_size) : m_hash(hash), m_implicit(implicit), + m_SALT_SIZE(salt_size) {} + + EMSA* clone() override; + + std::string name() const override; + private: + void update(const uint8_t input[], size_t length) override; + + secure_vector<uint8_t> raw_data() override; + + secure_vector<uint8_t> encoding_of(const secure_vector<uint8_t>& msg, + size_t output_bits, + RandomNumberGenerator& rng) override; + + bool verify(const secure_vector<uint8_t>& coded, + const secure_vector<uint8_t>& raw, + size_t key_bits) override; + + std::unique_ptr<HashFunction> m_hash; + bool m_implicit; + size_t m_SALT_SIZE; + secure_vector<uint8_t> m_msg_buffer; + }; + +/** +* ISO-9796-2 - Digital signature scheme 3 (deterministic) +*/ +class BOTAN_PUBLIC_API(2,0) ISO_9796_DS3 final : public EMSA + { + public: + /** + * @param hash function to use + * @param implicit whether or not the trailer is implicit + */ + ISO_9796_DS3(HashFunction* hash, bool implicit = false) : m_hash(hash), m_implicit(implicit) + {} + + EMSA* clone() override; + + std::string name() const override; + private: + void update(const uint8_t input[], size_t length) override; + + secure_vector<uint8_t> raw_data() override; + + secure_vector<uint8_t> encoding_of(const secure_vector<uint8_t>& msg, + size_t output_bits, + RandomNumberGenerator& rng) override; + + bool verify(const secure_vector<uint8_t>& coded, + const secure_vector<uint8_t>& raw, + size_t key_bits) override; + + std::unique_ptr<HashFunction> m_hash; + bool m_implicit; + secure_vector<uint8_t> m_msg_buffer; + }; + +} + +#endif + |