diff options
Diffstat (limited to '')
-rw-r--r-- | src/lib/libcrypto/man/EVP_des_cbc.3 | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/src/lib/libcrypto/man/EVP_des_cbc.3 b/src/lib/libcrypto/man/EVP_des_cbc.3 index 759e03fac0..7c8a08c7db 100644 --- a/src/lib/libcrypto/man/EVP_des_cbc.3 +++ b/src/lib/libcrypto/man/EVP_des_cbc.3 | |||
@@ -1,4 +1,4 @@ | |||
1 | .\" $OpenBSD: EVP_des_cbc.3,v 1.1 2019/03/21 12:54:37 schwarze Exp $ | 1 | .\" $OpenBSD: EVP_des_cbc.3,v 1.2 2024/11/09 22:03:49 schwarze Exp $ |
2 | .\" full merge up to: | 2 | .\" full merge up to: |
3 | .\" OpenSSL EVP_desx_cbc.pod 8fa4d95e Oct 21 11:59:09 2017 +0900 | 3 | .\" OpenSSL EVP_desx_cbc.pod 8fa4d95e Oct 21 11:59:09 2017 +0900 |
4 | .\" selective merge up to: | 4 | .\" selective merge up to: |
@@ -51,7 +51,7 @@ | |||
51 | .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | 51 | .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
52 | .\" OF THE POSSIBILITY OF SUCH DAMAGE. | 52 | .\" OF THE POSSIBILITY OF SUCH DAMAGE. |
53 | .\" | 53 | .\" |
54 | .Dd $Mdocdate: March 21 2019 $ | 54 | .Dd $Mdocdate: November 9 2024 $ |
55 | .Dt EVP_DES_CBC 3 | 55 | .Dt EVP_DES_CBC 3 |
56 | .Os | 56 | .Os |
57 | .Sh NAME | 57 | .Sh NAME |
@@ -128,6 +128,15 @@ | |||
128 | These functions provide the DES encryption algorithm in the | 128 | These functions provide the DES encryption algorithm in the |
129 | .Xr evp 3 | 129 | .Xr evp 3 |
130 | framework. | 130 | framework. |
131 | DES is a block cipher operating on 64 bit blocks. | ||
132 | The key length to be used for | ||
133 | .Xr EVP_EncryptInit 3 | ||
134 | is 64 bits. | ||
135 | However, only 56 of these bits are used in the encryption algorithm. | ||
136 | The least significant bit in each of the eight bytes is only used | ||
137 | for checking parity. | ||
138 | Using this algorithm is discouraged because the short key length | ||
139 | makes it vulnerable to brute force attacks. | ||
131 | .Pp | 140 | .Pp |
132 | .Fn EVP_des_cbc , | 141 | .Fn EVP_des_cbc , |
133 | .Fn EVP_des_cfb1 , | 142 | .Fn EVP_des_cfb1 , |