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 b7 55 4a d3 91 70 52 8e |Salted__.UJ..pR.|
00000010 e2 33 f9 8b 82 e0 62 cd 7d 63 a9 49 28 ad b2 37 |.3....b.}c.I(..7|
00000020 e2 33 f9 8b 82 e0 62 cd 7d 63 a9 49 28 ad b2 37 |.3....b.}c.I(..7|
00000030 e2 33 f9 8b 82 e0 62 cd 7d 63 a9 49 28 ad b2 37 |.3....b.}c.I(..7|
00000040 e2 33 f9 8b 82 e0 62 cd 7d 63 a9 49 28 ad b2 37 |.3....b.}c.I(..7|
00000050 dd 86 e1 4e d4 ca 94 c8 5e 14 26 2e 1d f9 97 3f |...N....^.&....?|
00000060
> 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 d9 97 20 cb 0f 9b 45 7f |Salted__.. ...E.|
00000010 57 24 34 85 e2 0f 48 88 d3 a2 b7 b1 d5 a8 1d 6a |W$4...H........j|
00000020 97 36 58 61 87 e9 0e 01 ea 3f 95 b4 f8 6d bc 0c |.6Xa.....?...m..|
00000030 b7 19 d5 96 b2 03 f2 40 58 fc 54 54 91 4a fb eb |.......@X.TT.J..|
00000040 8d 9b a4 00 75 76 ee d5 02 cd 53 a4 1e a5 11 9f |....uv....S.....|
00000050 bb 05 75 17 7c 5c bf d3 12 2a 48 0c 30 aa 80 b4 |..u.|\...*H.0...|
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