crypt information
> which openssl
/usr/local/bin/openssl
> openssl version
OpenSSL 1.0.2-chacha (1.0.2k-dev)
> openssl -help
openssl:Error: '-help' is an invalid command.
Standard commands
asn1parse ca ciphers cms
crl crl2pkcs7 dgst dh
dhparam dsa dsaparam ec
ecparam enc engine errstr
gendh gendsa genpkey genrsa
nseq ocsp passwd pkcs12
pkcs7 pkcs8 pkey pkeyparam
pkeyutl prime rand req
rsa rsautl s_client s_server
s_time sess_id smime speed
spkac srp ts verify
version x509
Message Digest commands (see the `dgst' command for more details)
md2 md4 md5 mdc2
rmd160 sha sha1
Cipher commands (see the `enc' command for more details)
aes-128-cbc aes-128-ecb aes-192-cbc aes-192-ecb
aes-256-cbc aes-256-ecb base64 bf
bf-cbc bf-cfb bf-ecb bf-ofb
camellia-128-cbc camellia-128-ecb camellia-192-cbc camellia-192-ecb
camellia-256-cbc camellia-256-ecb cast cast-cbc
cast5-cbc cast5-cfb cast5-ecb cast5-ofb
des des-cbc des-cfb des-ecb
des-ede des-ede-cbc des-ede-cfb des-ede-ofb
des-ede3 des-ede3-cbc des-ede3-cfb des-ede3-ofb
des-ofb des3 desx idea
idea-cbc idea-cfb idea-ecb idea-ofb
rc2 rc2-40-cbc rc2-64-cbc rc2-cbc
rc2-cfb rc2-ecb rc2-ofb rc4
rc4-40 rc5 rc5-cbc rc5-cfb
rc5-ecb rc5-ofb seed seed-cbc
seed-cfb seed-ecb seed-ofb zlib
> openssl enc -help
unknown option '-help'
options are
-in input file
-out output file
-pass pass phrase source
-e encrypt
-d decrypt
-a/-base64 base64 encode/decode, depending on encryption flag
-k passphrase is the next argument
-kfile passphrase is the first line of the file argument
-md the next argument is the md to use to create a key
from a passphrase. One of md2, md5, sha or sha1
-S salt in hex is the next argument
-K/-iv key/iv in hex is the next argument
-[pP] print the iv/key (then exit if -P)
-bufsize buffer size
-nopad disable standard block padding
-engine e use engine e, possibly a hardware device.
Cipher Types
-aes-128-cbc -aes-128-cbc-hmac-sha1 -aes-128-ccm
-aes-128-cfb -aes-128-cfb1 -aes-128-cfb8
-aes-128-ctr -aes-128-ecb -aes-128-gcm
-aes-128-ofb -aes-128-xts -aes-192-cbc
-aes-192-ccm -aes-192-cfb -aes-192-cfb1
-aes-192-cfb8 -aes-192-ctr -aes-192-ecb
-aes-192-gcm -aes-192-ofb -aes-256-cbc
-aes-256-cbc-hmac-sha1 -aes-256-ccm -aes-256-cfb
-aes-256-cfb1 -aes-256-cfb8 -aes-256-ctr
-aes-256-ecb -aes-256-gcm -aes-256-ofb
-aes-256-xts -aes128 -aes192
-aes256 -bf -bf-cbc
-bf-cfb -bf-ecb -bf-ofb
-blowfish -camellia-128-cbc -camellia-128-cfb
-camellia-128-cfb1 -camellia-128-cfb8 -camellia-128-ecb
-camellia-128-ofb -camellia-192-cbc -camellia-192-cfb
-camellia-192-cfb1 -camellia-192-cfb8 -camellia-192-ecb
-camellia-192-ofb -camellia-256-cbc -camellia-256-cfb
-camellia-256-cfb1 -camellia-256-cfb8 -camellia-256-ecb
-camellia-256-ofb -camellia128 -camellia192
-camellia256 -cast -cast-cbc
-cast5-cbc -cast5-cfb -cast5-ecb
-cast5-ofb -des -des-cbc
-des-cfb -des-cfb1 -des-cfb8
-des-ecb -des-ede -des-ede-cbc
-des-ede-cfb -des-ede-ofb -des-ede3
-des-ede3-cbc -des-ede3-cfb -des-ede3-cfb1
-des-ede3-cfb8 -des-ede3-ofb -des-ofb
-des3 -desx -desx-cbc
-id-aes128-CCM -id-aes128-GCM -id-aes128-wrap
-id-aes192-CCM -id-aes192-GCM -id-aes192-wrap
-id-aes256-CCM -id-aes256-GCM -id-aes256-wrap
-id-smime-alg-CMS3DESwrap -idea -idea-cbc
-idea-cfb -idea-ecb -idea-ofb
-rc2 -rc2-40-cbc -rc2-64-cbc
-rc2-cbc -rc2-cfb -rc2-ecb
-rc2-ofb -rc4 -rc4-40
-rc4-hmac-md5 -rc5 -rc5-cbc
-rc5-cfb -rc5-ecb -rc5-ofb
-seed -seed-cbc -seed-cfb
-seed-ecb -seed-ofb
> yes | head -n 32 |
| openssl enc -k 12345678 -aes-256-ecb |
| hexdump -Cv
yes: stdout: Broken pipe
00000000 53 61 6c 74 65 64 5f 5f 04 08 d1 d4 a6 5b a5 9d |Salted__.....[..|
00000010 d1 27 fb 7c 83 a1 83 0a 4f 65 75 47 04 71 05 92 |.'.|....OeuG.q..|
00000020 d1 27 fb 7c 83 a1 83 0a 4f 65 75 47 04 71 05 92 |.'.|....OeuG.q..|
00000030 d1 27 fb 7c 83 a1 83 0a 4f 65 75 47 04 71 05 92 |.'.|....OeuG.q..|
00000040 d1 27 fb 7c 83 a1 83 0a 4f 65 75 47 04 71 05 92 |.'.|....OeuG.q..|
00000050 19 3c 6e 7a 52 9d c1 b1 fa 61 81 3a 9d d0 c5 ce |.
> yes | head -n 32 |
| openssl enc -k 12345678 -aes-256-ecb |
| openssl enc -d -k 12345678 -aes-256-ecb | uniq -c
yes: stdout: Broken pipe
32 y
> yes | head -n 32 |
| openssl enc -k 12345678 -aes-256-cbc |
| hexdump -Cv
yes: stdout: Broken pipe
00000000 53 61 6c 74 65 64 5f 5f 24 2c 2e de 9d 3e dc 1f |Salted__$,...>..|
00000010 82 bb a5 81 4a ce b9 60 40 ff 57 e8 6e 87 29 cc |....J..`@.W.n.).|
00000020 bd b8 4a 48 10 31 78 37 fb 0e 6d 28 ca f4 a4 e3 |..JH.1x7..m(....|
00000030 24 9d 9c 54 c2 76 35 87 5c 6b 4d 56 23 1f 5d a1 |$..T.v5.\kMV#.].|
00000040 4b c7 3d 46 b8 f2 a0 8b ef 4c 71 68 86 af d9 d5 |K.=F.....Lqh....|
00000050 76 4f 05 65 76 43 bb ad 60 fc 33 d4 00 bd dc 49 |vO.evC..`.3....I|
00000060
> yes | head -n 32 |
| openssl enc -k 12345678 -aes-256-cbc |
| openssl enc -d -k 12345678 -aes-256-cbc | uniq -c
yes: stdout: Broken pipe
32 y