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 40 dd 8e 40 4b 17 3b 56 |Salted__@..@K.;V|
00000010 73 6a 09 2d 6a 9b bb 40 70 d6 74 83 88 3f 49 30 |sj.-j..@p.t..?I0|
00000020 73 6a 09 2d 6a 9b bb 40 70 d6 74 83 88 3f 49 30 |sj.-j..@p.t..?I0|
00000030 73 6a 09 2d 6a 9b bb 40 70 d6 74 83 88 3f 49 30 |sj.-j..@p.t..?I0|
00000040 73 6a 09 2d 6a 9b bb 40 70 d6 74 83 88 3f 49 30 |sj.-j..@p.t..?I0|
00000050 c0 49 42 e2 2a b4 fe 9c 6e 70 5b 5e 83 70 d6 b4 |.IB.*...np[^.p..|
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 be b6 f3 40 28 4a 23 c9 |Salted__...@(J#.|
00000010 ee 40 1f b4 a9 f7 aa 37 3c a3 31 bd ea 04 03 c5 |.@.....7<.1.....|
00000020 61 02 ef 33 8f 00 ad dc 76 99 4c 43 e3 32 6c 63 |a..3....v.LC.2lc|
00000030 34 36 44 e2 ac 3e 55 d0 b8 86 59 24 33 b7 3a cc |46D..>U...Y$3.:.|
00000040 d3 1e 55 d2 4e a8 aa 89 50 1d b4 ba fa 27 37 d3 |..U.N...P....'7.|
00000050 7b 1b a8 13 51 e0 d9 03 f4 59 a7 21 dc 09 05 5a |{...Q....Y.!...Z|
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