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我正在生成要从Ruby堆栈发送到PHP堆栈的数据.我在Ruby端使用OpenSSL :: Cipher库,在PHP使用'mcrypt'库.当我在Ruby中使用'aes-256-cbc'(256位块大小)进行加密时,我需要在PHP中使用MCRYPT_RIJNDAEL_128(128位块大小)来解密它.我怀疑Ruby代码坏了,因为cipher.iv_len是16; 我相信它应该是32:

>> cipher = OpenSSL::Cipher::Cipher.new('aes-128-cbc')
=> #<OpenSSL::Cipher::Cipher:0x3067c5c>
>> cipher.key_len
=> 16
>> cipher.iv_len
=> 16
>> cipher = OpenSSL::Cipher::Cipher.new('aes-256-cbc')
=> #<OpenSSL::Cipher::Cipher:0x306de18>
>> cipher.key_len
=> 32
>> cipher.iv_len
=> 16

所以这是我的考试.在Ruby方面,首先我生成密钥和iv:

>> cipher = OpenSSL::Cipher::Cipher.new('aes-256-cbc')
>> cipher.encrypt
>> iv = cipher.random_iv
>> iv64 = [iv].pack("m").strip
=> "vCkaypm5tPmtP3TF7aWrug=="
>> key = cipher.random_key
>> key64 = [key].pack("m").strip
=> "RIvFgoi9xZaHS/0Bp0J9WDRyND6Z7jrd3btiAfcQ8Y0="

然后我使用这些密钥进行加密:

>> plain_data = "Hi, Don, this is a string."
>> cipher = OpenSSL::Cipher::Cipher.new('aes-256-cbc')
>> cipher.encrypt
>> cipher.key = Base64.decode64(key64)
>> …