Commit 173339ae authored by Hubert Chathi's avatar Hubert Chathi
Browse files

add more comments describing the pk encrypt/decrypt functions

parent bad14db8
......@@ -72,11 +72,15 @@ size_t olm_pk_encrypt_random_length(
);
/** Encrypt a plaintext for the recipient set using
* olm_pk_encryption_set_recipient_key. Returns olm_error() on failure. If the
* ciphertext, mac, or ephemeral_key buffers were too small then
* olm_pk_encryption_last_error() will be "OUTPUT_BUFFER_TOO_SMALL". If there
* weren't enough random bytes then olm_pk_encryption_last_error() will be
* "NOT_ENOUGH_RANDOM". */
* olm_pk_encryption_set_recipient_key. Writes to the ciphertext, mac, and
* ephemeral_key buffers, whose values should be sent to the recipient. mac is
* a Message Authentication Code to ensure that the data is received and
* decrypted properly. ephemeral_key is the public part of the ephemeral key
* used (together with the recipient's key) to generate a symmetric encryption
* key. Returns olm_error() on failure. If the ciphertext, mac, or
* ephemeral_key buffers were too small then olm_pk_encryption_last_error()
* will be "OUTPUT_BUFFER_TOO_SMALL". If there weren't enough random bytes then
* olm_pk_encryption_last_error() will be "NOT_ENOUGH_RANDOM". */
size_t olm_pk_encrypt(
OlmPkEncryption *encryption,
void const * plaintext, size_t plaintext_length,
......@@ -160,10 +164,11 @@ size_t olm_pk_max_plaintext_length(
size_t ciphertext_length
);
/** Decrypt a ciphertext. The input ciphertext buffer is destroyed. Returns
* the length of the plaintext on success. Returns olm_error() on failure. If
* the plaintext buffer is too small then olm_pk_encryption_last_error() will
* be "OUTPUT_BUFFER_TOO_SMALL". */
/** Decrypt a ciphertext. The input ciphertext buffer is destroyed. See the
* olm_pk_encrypt function for descriptions of the ephemeral_key and mac
* arguments. Returns the length of the plaintext on success. Returns
* olm_error() on failure. If the plaintext buffer is too small then
* olm_pk_encryption_last_error() will be "OUTPUT_BUFFER_TOO_SMALL". */
size_t olm_pk_decrypt(
OlmPkDecryption * decryption,
void const * ephemeral_key, size_t ephemeral_key_length,
......
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