diff options
Diffstat (limited to 'src/lib/pubkey/pubkey.h')
| -rw-r--r-- | src/lib/pubkey/pubkey.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/lib/pubkey/pubkey.h b/src/lib/pubkey/pubkey.h index 8328861fd..a1404135d 100644 --- a/src/lib/pubkey/pubkey.h +++ b/src/lib/pubkey/pubkey.h @@ -66,6 +66,11 @@ class BOTAN_PUBLIC_API(2,0) PK_Encryptor */ virtual size_t maximum_input_size() const = 0; + /** + * Return an upper bound on the ciphertext length + */ + virtual size_t ciphertext_length(size_t ctext_len) const = 0; + PK_Encryptor() = default; virtual ~PK_Encryptor() = default; @@ -140,6 +145,12 @@ class BOTAN_PUBLIC_API(2,0) PK_Decryptor const uint8_t required_content_offsets[], size_t required_contents) const; + /** + * Return an upper bound on the plaintext length for a particular + * ciphertext input length + */ + virtual size_t plaintext_length(size_t ctext_len) const = 0; + PK_Decryptor() = default; virtual ~PK_Decryptor() = default; @@ -547,6 +558,12 @@ class BOTAN_PUBLIC_API(2,0) PK_Encryptor_EME final : public PK_Encryptor PK_Encryptor_EME& operator=(const PK_Encryptor_EME&) = delete; PK_Encryptor_EME(const PK_Encryptor_EME&) = delete; + + /** + * Return an upper bound on the ciphertext length for a particular + * plaintext input length + */ + size_t ciphertext_length(size_t ptext_len) const override; private: std::vector<uint8_t> enc(const uint8_t[], size_t, RandomNumberGenerator& rng) const override; @@ -586,6 +603,8 @@ class BOTAN_PUBLIC_API(2,0) PK_Decryptor_EME final : public PK_Decryptor PK_Decryptor_EME(key, system_rng(), eme, provider) {} #endif + size_t plaintext_length(size_t ptext_len) const override; + ~PK_Decryptor_EME(); PK_Decryptor_EME& operator=(const PK_Decryptor_EME&) = delete; PK_Decryptor_EME(const PK_Decryptor_EME&) = delete; |