diff options
Diffstat (limited to 'src/lib/pubkey/elgamal')
| -rw-r--r-- | src/lib/pubkey/elgamal/elgamal.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/lib/pubkey/elgamal/elgamal.h b/src/lib/pubkey/elgamal/elgamal.h index 8ca4facc2..102d5ad91 100644 --- a/src/lib/pubkey/elgamal/elgamal.h +++ b/src/lib/pubkey/elgamal/elgamal.h @@ -23,11 +23,21 @@ class BOTAN_DLL ElGamal_PublicKey : public virtual DL_Scheme_PublicKey size_t max_input_bits() const override { return (group_p().bits() - 1); } + /** + * Load a public key. + * @param alg_id the X.509 algorithm identifier + * @param key_bits X.509 subject public key info structure + */ ElGamal_PublicKey(const AlgorithmIdentifier& alg_id, const secure_vector<byte>& key_bits) : DL_Scheme_PublicKey(alg_id, key_bits, DL_Group::ANSI_X9_42) {} + /** + * Create a public key. + * @param group the underlying DL group + * @param y the public value y = g^x mod p + */ ElGamal_PublicKey(const DL_Group& group, const BigInt& y); std::unique_ptr<PK_Ops::Encryption> @@ -48,10 +58,22 @@ class BOTAN_DLL ElGamal_PrivateKey : public ElGamal_PublicKey, public: bool check_key(RandomNumberGenerator& rng, bool) const override; + /** + * Load a private key. + * @param alg_id the X.509 algorithm identifier + * @param key_bits PKCS #8 structure + * @param rng the RNG to use + */ ElGamal_PrivateKey(const AlgorithmIdentifier& alg_id, const secure_vector<byte>& key_bits, RandomNumberGenerator& rng); + /** + * Create a private key. + * @param rng random number generator to use + * @param group the group to be used in the key + * @param priv_key the key's secret value (or if zero, generate a new key) + */ ElGamal_PrivateKey(RandomNumberGenerator& rng, const DL_Group& group, const BigInt& priv_key = 0); |