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| -rw-r--r-- | doc/man1/openssl-enc.pod.in | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/doc/man1/openssl-enc.pod.in b/doc/man1/openssl-enc.pod.in index f424358ab3..0f6bd6a139 100644 --- a/doc/man1/openssl-enc.pod.in +++ b/doc/man1/openssl-enc.pod.in @@ -256,6 +256,19 @@ All RC2 ciphers have the same key and effective key length. Blowfish and RC5 algorithms use a 128 bit key. +Please note that OpenSSL 3.0 changed the effect of the B<-S> option. +Any explicit salt value specified via this option is no longer prepended to the +ciphertext when encrypting, and must again be explicitly provided when decrypting. +Conversely, when the B<-S> option is used during decryption, the ciphertext +is expected to not have a prepended salt value. + +When using OpenSSL 3.0 or later to decrypt data that was encrypted with an +explicit salt under OpenSSL 1.1.1 do not use the B<-S> option, the salt will +then be read from the ciphertext. +To generate ciphertext that can be decrypted with OpenSSL 1.1.1 do not use +the B<-S> option, the salt will be then be generated randomly and prepended +to the output. + =head1 SUPPORTED CIPHERS Note that some of these ciphers can be disabled at compile time |