我正在尝试在Ruby中实现aes-128-ccm加密字符串的SJCL解密。阅读similar question之后，我发现在新版本的OpenSSL库中应该支持这一点，因此我已经将开发版本从github安装到/ opt
执行此操作后，当我运行/ opt / bin / openssl密码时，我在列表中看不到aes-128-ccm密码：
ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:SRP-DSS-AES-256-CBC-SHA:SRP-RSA-AES-256-CBC-SHA:DH-DSS-AES256-GCM-SHA384:DHE-DSS-AES256-GCM-SHA384:DH-RSA-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA256:DH-RSA-AES256-SHA256:DH-DSS-AES256-SHA256:DHE-RSA-AES256-SHA:DHE-DSS-AES256-SHA:DH-RSA-AES256-SHA:DH-DSS-AES256-SHA:DHE-RSA-CAMELLIA256-SHA:DHE-DSS-CAMELLIA256-SHA:DH-RSA-CAMELLIA256-SHA:DH-DSS-CAMELLIA256-SHA:ECDH-RSA-AES256-GCM-SHA384:ECDH-ECDSA-AES256-GCM-SHA384:ECDH-RSA-AES256-SHA384:ECDH-ECDSA-AES256-SHA384:ECDH-RSA-AES256-SHA:ECDH-ECDSA-AES256-SHA:AES256-GCM-SHA384:AES256-SHA256:AES256-SHA:CAMELLIA256-SHA:PSK-AES256-CBC-SHA:ECDHE-RSA-DES-CBC3-SHA:ECDHE-ECDSA-DES-CBC3-SHA:SRP-DSS-3DES-EDE-CBC-SHA:SRP-RSA-3DES-EDE-CBC-SHA:EDH-RSA-DES-CBC3-SHA:EDH-DSS-DES-CBC3-SHA:DH-RSA-DES-CBC3-SHA:DH-DSS-DES-CBC3-SHA:ECDH-RSA-DES-CBC3-SHA:ECDH-ECDSA-DES-CBC3-SHA:DES-CBC3-SHA:PSK-3DES-EDE-CBC-SHA:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:SRP-DSS-AES-128-CBC-SHA:SRP-RSA-AES-128-CBC-SHA:DH-DSS-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:DH-RSA-AES128-GCM-SHA256:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES128-SHA256:DHE-DSS-AES128-SHA256:DH-RSA-AES128-SHA256:DH-DSS-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA:DH-RSA-AES128-SHA:DH-DSS-AES128-SHA:DHE-RSA-SEED-SHA:DHE-DSS-SEED-SHA:DH-RSA-SEED-SHA:DH-DSS-SEED-SHA:DHE-RSA-CAMELLIA128-SHA:DHE-DSS-CAMELLIA128-SHA:DH-RSA-CAMELLIA128-SHA:DH-DSS-CAMELLIA128-SHA:ECDH-RSA-AES128-GCM-SHA256:ECDH-ECDSA-AES128-GCM-SHA256:ECDH-RSA-AES128-SHA256:ECDH-ECDSA-AES128-SHA256:ECDH-RSA-AES128-SHA:ECDH-ECDSA-AES128-SHA:AES128-GCM-SHA256:AES128-SHA256:AES128-SHA:SEED-SHA:CAMELLIA128-SHA:IDEA-CBC-SHA:PSK-AES128-CBC-SHA:ECDHE-RSA-RC4-SHA:ECDHE-ECDSA-RC4-SHA:ECDH-RSA-RC4-SHA:ECDH-ECDSA-RC4-SHA:RC4-SHA:RC4-MD5:PSK-RC4-SHA:EDH-RSA-DES-CBC-SHA:EDH-DSS-DES-CBC-SHA:DH-RSA-DES-CBC-SHA:DH-DSS-DES-CBC-SHA:DES-CBC-SHA:EXP-EDH-RSA-DES-CBC-SHA:EXP-EDH-DSS-DES-CBC-SHA:EXP-DH-RSA-DES-CBC-SHA:EXP-DH-DSS-DES-CBC-SHA:EXP-DES-CBC-SHA:EXP-RC2-CBC-MD5:EXP-RC4-MD5
但如果我运行/ opt / bin / openssl enc -help 2＆gt;＆amp; 1，我会看到＆＃34; -aes-128-ccm＆＃34;：
-aes-128-cbc -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-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 -gost89 -gost89-cnt
-id-aes128-CCM -id-aes128-GCM -id-aes192-CCM
-id-aes192-GCM -id-aes256-CCM -id-aes256-GCM
-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
-seed -seed-cbc -seed-cfb
-seed-ecb -seed-ofb
我使用命令rvm reinstall 2.0.0 --with-openssl-dir=/opt（在前面提到的文章中给出）使用rvm重新安装了ruby 2.0.0p0。然后跑cipher = OpenSSL::Cipher.new('aes-128-ccm')。其中返回了以下错误：
unsupported cipher algorithm (aes-128-ccm)
我的问题是如何在Ruby中添加对AES-128-CCM的支持/我在这里做错了什么？
答案 0 :(得分：2)
好的，我已经成功了，这就是我做的：
首先从github获取OpenSSL源：
$ git clone https://github.com/openssl/openssl.git
$ cd openssl/
如果您想要与我使用的完全相同的版本，请执行：
$ git checkout 5ae8d6bcbaff99423a2608559d738a3fcf7ed6dc -b tmp
现在在某个目录中使用共享库构建OpenSSL：
$ ./config shared --prefix=/home/jbr/local/openssl
$ make depend
$ make
$ make install
确保您拥有ccm-support：
$ /home/jbr/local/openssl/bin/openssl enc -help 2>&1 | grep "ccm"
-aes-128-ccm -aes-128-cfb -aes-128-cfb1
-aes-192-cbc -aes-192-ccm -aes-192-cfb
-aes-256-ccm -aes-256-cfb -aes-256-cfb1
好的，现在使用rvm和你的新版OpenSSL安装一个名为Ruby的东西：
$ rvm install ruby-2.0.0-p195 -n ccm --with-openssl-dir=/home/jbr/local/openssl
此命令为您提供了一个与-ccm混合的Ruby 2.0.0补丁级别195的版本，它使用您的新OpenSSL库。
现在使用新版本的Ruby：
$ rvm use ruby-2.0.0-p195-ccm
用irb测试出来：
$ irb
2.0.0p195 :001 > require 'openssl'
=> true
2.0.0p195 :005 > OpenSSL::Cipher.ciphers.include? "aes-128-ccm"
=> true
你现在有aes-128-ccm。