Add description in X509_STORE manipulation

[openssl.git] / doc / man3 / EVP_chacha20.pod

diff --git a/doc/man3/EVP_chacha20.pod b/doc/man3/EVP_chacha20.pod
index 96da825cded4b1de62ecaf5b51925d0abfbb7888..5218ee215fcb287c23cebbf8879d28f2805757e1 100644 (file)
--- a/doc/man3/EVP_chacha20.pod
+++ b/doc/man3/EVP_chacha20.pod
@@ -21,7 +21,15 @@ The ChaCha20 stream cipher for EVP.
 
 =item EVP_chacha20()
 
-The ChaCha20 stream cipher. The key length is 256 bits, the IV is 96 bits long.
+The ChaCha20 stream cipher. The key length is 256 bits, the IV is 128 bits long.
+The first 32 bits consists of a counter in little-endian order followed by a 96
+bit nonce. For example a nonce of:
+
+000000000000000000000002
+
+With an initial counter of 42 (2a in hex) would be expressed as:
+
+2a000000000000000000000000000002
 
 =item EVP_chacha20_poly1305()
 
@@ -48,7 +56,7 @@ L<EVP_CIPHER_meth_new(3)>
 
 Copyright 2017 The OpenSSL Project Authors. All Rights Reserved.
 
-Licensed under the OpenSSL license (the "License").  You may not use
+Licensed under the Apache License 2.0 (the "License").  You may not use
 this file except in compliance with the License.  You can obtain a copy
 in the file LICENSE in the source distribution or at
 L<https://www.openssl.org/source/license.html>.