diff options
| author | Dr. Stephen Henson <steve@openssl.org> | 2017-08-23 23:58:04 +0100 |
|---|---|---|
| committer | Dr. Stephen Henson <steve@openssl.org> | 2017-08-23 23:58:04 +0100 |
| commit | 9807f03e4ab77f20561a4a8b8f5eef122273c703 (patch) | |
| tree | b497d16956d594255ee52f3a0dead379e17f7020 /doc | |
| parent | e09cfa470968fed533c864b98fb14210eb10b573 (diff) | |
Correct GCM docs.
Fix GCM documentation: the tag does not have to be supplied before
decrypting any data any more.
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4231)
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/crypto/EVP_EncryptInit.pod | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/doc/crypto/EVP_EncryptInit.pod b/doc/crypto/EVP_EncryptInit.pod index 012acfd2bc..17bd7a99c6 100644 --- a/doc/crypto/EVP_EncryptInit.pod +++ b/doc/crypto/EVP_EncryptInit.pod @@ -448,9 +448,8 @@ either be 16 or the value previously set via EVP_CTRL_OCB_SET_TAGLEN. EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_TAG, taglen, tag); Sets the expected tag to B<taglen> bytes from B<tag>. This call is only legal -when decrypting data and must be made B<before> any data is processed (e.g. -before any EVP_DecryptUpdate() call). For OCB mode the taglen must -either be 16 or the value previously set via EVP_CTRL_AEAD_SET_TAG. +when decrypting data. For OCB mode the taglen must either be 16 or the value +previously set via EVP_CTRL_AEAD_SET_TAG. In OCB mode calling this with B<tag> set to NULL sets the tag length. The tag length can only be set before specifying an IV. If not called a default tag |