document the constant EVP_CHACHAPOLY_TLS_TAG_LEN

2 files changed, 9 insertions, 3 deletions

diff --git a/src/lib/libcrypto/man/EVP_AEAD_CTX_init.3 b/src/lib/libcrypto/man/EVP_AEAD_CTX_init.3
index 02f6e275d1..01692c93e6 100644
--- a/src/lib/libcrypto/man/EVP_AEAD_CTX_init.3
+++ b/src/lib/libcrypto/man/EVP_AEAD_CTX_init.3
@@ -1,4 +1,4 @@
-.\" $OpenBSD: EVP_AEAD_CTX_init.3,v 1.14 2023/09/12 13:29:38 schwarze Exp $
+.\" $OpenBSD: EVP_AEAD_CTX_init.3,v 1.15 2023/09/12 13:58:06 schwarze Exp $
 .\"
 .\" Copyright (c) 2014, Google Inc.
 .\" Parts of the text were written by Adam Langley and David Benjamin.
@@ -279,6 +279,9 @@ ChaCha20 with a Poly1305 authenticator, using a
 of 32 bytes and a
 .Fa nonce_len
 of 12 bytes.
+The constant
+.Dv EVP_CHACHAPOLY_TLS_TAG_LEN
+specifies the length of the authentication tag in bytes and has a value of 16.
 .It Fn EVP_aead_xchacha20_poly1305
 XChaCha20 with a Poly1305 authenticator, using a
 .Fa key_len
diff --git a/src/lib/libcrypto/man/EVP_chacha20.3 b/src/lib/libcrypto/man/EVP_chacha20.3
index 14a26b3043..8d0be1ed64 100644
--- a/src/lib/libcrypto/man/EVP_chacha20.3
+++ b/src/lib/libcrypto/man/EVP_chacha20.3
@@ -1,4 +1,4 @@
-.\" $OpenBSD: EVP_chacha20.3,v 1.6 2023/08/24 04:33:08 tb Exp $
+.\" $OpenBSD: EVP_chacha20.3,v 1.7 2023/09/12 13:58:06 schwarze Exp $
 .\" full merge up to: OpenSSL 35fd9953 May 28 14:49:38 2019 +0200
 .\"
 .\" This file is a derived work.
@@ -65,7 +65,7 @@
 .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 .\" OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: August 24 2023 $
+.Dd $Mdocdate: September 12 2023 $
 .Dt EVP_CHACHA20 3
 .Os
 .Sh NAME
@@ -135,6 +135,9 @@ argument of 32 bytes = 256 bits and an
 argument of 12 bytes = 96 bits.
 This supports additional authenticated data (AAD) and produces a 128-bit
 authentication tag.
+The constant
+.Dv EVP_CHACHAPOLY_TLS_TAG_LEN
+specifies the length of the authentication tag in bytes and has a value of 16.
 .Pp
 The following
 .Fa type