{
    "mode": "perldoc",
    "parameter": "Crypt::Cipher::Skipjack",
    "section": "",
    "url": "https://www.chedong.com/phpMan.php/perldoc/Crypt%3A%3ACipher%3A%3ASkipjack/json",
    "generated": "2026-06-09T14:07:09Z",
    "synopsis": "### example 1\nuse Crypt::Mode::CBC;\nmy $key = '...'; # length has to be valid key size for this cipher\nmy $iv = '...';  # 16 bytes\nmy $cbc = Crypt::Mode::CBC->new('Skipjack');\nmy $ciphertext = $cbc->encrypt(\"secret data\", $key, $iv);\n### example 2 (slower)\nuse Crypt::CBC;\nuse Crypt::Cipher::Skipjack;\nmy $key = '...'; # length has to be valid key size for this cipher\nmy $iv = '...';  # 16 bytes\nmy $cbc = Crypt::CBC->new( -cipher=>'Cipher::Skipjack', -key=>$key, -iv=>$iv );\nmy $ciphertext = $cbc->encrypt(\"secret data\");",
    "sections": {
        "NAME": {
            "content": "Crypt::Cipher::Skipjack - Symmetric cipher Skipjack, key size: 80 bits\n",
            "subsections": []
        },
        "SYNOPSIS": {
            "content": "### example 1\nuse Crypt::Mode::CBC;\n\nmy $key = '...'; # length has to be valid key size for this cipher\nmy $iv = '...';  # 16 bytes\nmy $cbc = Crypt::Mode::CBC->new('Skipjack');\nmy $ciphertext = $cbc->encrypt(\"secret data\", $key, $iv);\n\n### example 2 (slower)\nuse Crypt::CBC;\nuse Crypt::Cipher::Skipjack;\n\nmy $key = '...'; # length has to be valid key size for this cipher\nmy $iv = '...';  # 16 bytes\nmy $cbc = Crypt::CBC->new( -cipher=>'Cipher::Skipjack', -key=>$key, -iv=>$iv );\nmy $ciphertext = $cbc->encrypt(\"secret data\");\n",
            "subsections": []
        },
        "DESCRIPTION": {
            "content": "This module implements the Skipjack cipher. Provided interface is compliant with Crypt::CBC\nmodule.\n\nBEWARE: This module implements just elementary \"one-block-(en|de)cryption\" operation - if you\nwant to encrypt/decrypt generic data you have to use some of the cipher block modes - check for\nexample Crypt::Mode::CBC, Crypt::Mode::CTR or Crypt::CBC (which will be slower).\n",
            "subsections": []
        },
        "METHODS": {
            "content": "new\n$c = Crypt::Cipher::Skipjack->new($key);\n#or\n$c = Crypt::Cipher::Skipjack->new($key, $rounds);\n\nencrypt\n$ciphertext = $c->encrypt($plaintext);\n\ndecrypt\n$plaintext = $c->decrypt($ciphertext);\n\nkeysize\n$c->keysize;\n#or\nCrypt::Cipher::Skipjack->keysize;\n#or\nCrypt::Cipher::Skipjack::keysize;\n\nblocksize\n$c->blocksize;\n#or\nCrypt::Cipher::Skipjack->blocksize;\n#or\nCrypt::Cipher::Skipjack::blocksize;\n\nmaxkeysize\n$c->maxkeysize;\n#or\nCrypt::Cipher::Skipjack->maxkeysize;\n#or\nCrypt::Cipher::Skipjack::maxkeysize;\n\nminkeysize\n$c->minkeysize;\n#or\nCrypt::Cipher::Skipjack->minkeysize;\n#or\nCrypt::Cipher::Skipjack::minkeysize;\n\ndefaultrounds\n$c->defaultrounds;\n#or\nCrypt::Cipher::Skipjack->defaultrounds;\n#or\nCrypt::Cipher::Skipjack::defaultrounds;\n",
            "subsections": []
        },
        "SEE ALSO": {
            "content": "*   CryptX, Crypt::Cipher\n\n*   <https://en.wikipedia.org/wiki/Skipjack(cipher)>\n",
            "subsections": []
        }
    },
    "summary": "Crypt::Cipher::Skipjack - Symmetric cipher Skipjack, key size: 80 bits",
    "flags": [],
    "examples": [],
    "see_also": [
        {
            "name": "Skipjack",
            "section": "cipher",
            "url": "https://www.chedong.com/phpMan.php/man/Skipjack/cipher/json"
        }
    ]
}