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Diffstat (limited to 'doc/man3/EVP_chacha20.pod')
| -rw-r--r-- | doc/man3/EVP_chacha20.pod | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/doc/man3/EVP_chacha20.pod b/doc/man3/EVP_chacha20.pod index 96da825cded4b..a21b648595689 100644 --- 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() @@ -46,7 +54,7 @@ L<EVP_CIPHER_meth_new(3)> =head1 COPYRIGHT -Copyright 2017 The OpenSSL Project Authors. All Rights Reserved. +Copyright 2017-2019 The OpenSSL Project Authors. All Rights Reserved. Licensed under the OpenSSL license (the "License"). You may not use this file except in compliance with the License. You can obtain a copy |