{
    "mode": "perldoc",
    "parameter": "Crypt::Digest::BLAKE2s_256",
    "section": "",
    "url": "https://www.chedong.com/phpMan.php/perldoc/Crypt%3A%3ADigest%3A%3ABLAKE2s_256/json",
    "generated": "2026-06-11T04:34:03Z",
    "synopsis": "### Functional interface:\nuse Crypt::Digest::BLAKE2s256 qw( blake2s256 blake2s256hex blake2s256b64 blake2s256b64u\nblake2s256file blake2s256filehex blake2s256fileb64 blake2s256fileb64u );\n# calculate digest from string/buffer\n$blake2s256raw  = blake2s256('data string');\n$blake2s256hex  = blake2s256hex('data string');\n$blake2s256b64  = blake2s256b64('data string');\n$blake2s256b64u = blake2s256b64u('data string');\n# calculate digest from file\n$blake2s256raw  = blake2s256file('filename.dat');\n$blake2s256hex  = blake2s256filehex('filename.dat');\n$blake2s256b64  = blake2s256fileb64('filename.dat');\n$blake2s256b64u = blake2s256fileb64u('filename.dat');\n# calculate digest from filehandle\n$blake2s256raw  = blake2s256file(*FILEHANDLE);\n$blake2s256hex  = blake2s256filehex(*FILEHANDLE);\n$blake2s256b64  = blake2s256fileb64(*FILEHANDLE);\n$blake2s256b64u = blake2s256fileb64u(*FILEHANDLE);\n### OO interface:\nuse Crypt::Digest::BLAKE2s256;\n$d = Crypt::Digest::BLAKE2s256->new;\n$d->add('any data');\n$d->addfile('filename.dat');\n$d->addfile(*FILEHANDLE);\n$resultraw  = $d->digest;     # raw bytes\n$resulthex  = $d->hexdigest;  # hexadecimal form\n$resultb64  = $d->b64digest;  # Base64 form\n$resultb64u = $d->b64udigest; # Base64 URL Safe form",
    "sections": {
        "NAME": {
            "content": "Crypt::Digest::BLAKE2s256 - Hash function BLAKE2s [size: 256 bits]\n",
            "subsections": []
        },
        "SYNOPSIS": {
            "content": "### Functional interface:\nuse Crypt::Digest::BLAKE2s256 qw( blake2s256 blake2s256hex blake2s256b64 blake2s256b64u\nblake2s256file blake2s256filehex blake2s256fileb64 blake2s256fileb64u );\n\n# calculate digest from string/buffer\n$blake2s256raw  = blake2s256('data string');\n$blake2s256hex  = blake2s256hex('data string');\n$blake2s256b64  = blake2s256b64('data string');\n$blake2s256b64u = blake2s256b64u('data string');\n# calculate digest from file\n$blake2s256raw  = blake2s256file('filename.dat');\n$blake2s256hex  = blake2s256filehex('filename.dat');\n$blake2s256b64  = blake2s256fileb64('filename.dat');\n$blake2s256b64u = blake2s256fileb64u('filename.dat');\n# calculate digest from filehandle\n$blake2s256raw  = blake2s256file(*FILEHANDLE);\n$blake2s256hex  = blake2s256filehex(*FILEHANDLE);\n$blake2s256b64  = blake2s256fileb64(*FILEHANDLE);\n$blake2s256b64u = blake2s256fileb64u(*FILEHANDLE);\n\n### OO interface:\nuse Crypt::Digest::BLAKE2s256;\n\n$d = Crypt::Digest::BLAKE2s256->new;\n$d->add('any data');\n$d->addfile('filename.dat');\n$d->addfile(*FILEHANDLE);\n$resultraw  = $d->digest;     # raw bytes\n$resulthex  = $d->hexdigest;  # hexadecimal form\n$resultb64  = $d->b64digest;  # Base64 form\n$resultb64u = $d->b64udigest; # Base64 URL Safe form\n",
            "subsections": []
        },
        "DESCRIPTION": {
            "content": "Provides an interface to the BLAKE2s256 digest algorithm.\n",
            "subsections": []
        },
        "EXPORT": {
            "content": "Nothing is exported by default.\n\nYou can export selected functions:\n\nuse Crypt::Digest::BLAKE2s256 qw(blake2s256 blake2s256hex blake2s256b64 blake2s256b64u\nblake2s256file blake2s256filehex blake2s256fileb64 blake2s256fileb64u);\n\nOr all of them at once:\n\nuse Crypt::Digest::BLAKE2s256 ':all';\n",
            "subsections": []
        },
        "FUNCTIONS": {
            "content": "blake2s256\nLogically joins all arguments into a single string, and returns its BLAKE2s256 digest encoded\nas a binary string.\n\n$blake2s256raw = blake2s256('data string');\n#or\n$blake2s256raw = blake2s256('any data', 'more data', 'even more data');\n\nblake2s256hex\nLogically joins all arguments into a single string, and returns its BLAKE2s256 digest encoded\nas a hexadecimal string.\n\n$blake2s256hex = blake2s256hex('data string');\n#or\n$blake2s256hex = blake2s256hex('any data', 'more data', 'even more data');\n\nblake2s256b64\nLogically joins all arguments into a single string, and returns its BLAKE2s256 digest encoded\nas a Base64 string, with trailing '=' padding.\n\n$blake2s256b64 = blake2s256b64('data string');\n#or\n$blake2s256b64 = blake2s256b64('any data', 'more data', 'even more data');\n\nblake2s256b64u\nLogically joins all arguments into a single string, and returns its BLAKE2s256 digest encoded\nas a Base64 URL Safe string (see RFC 4648 section 5).\n\n$blake2s256b64url = blake2s256b64u('data string');\n#or\n$blake2s256b64url = blake2s256b64u('any data', 'more data', 'even more data');\n\nblake2s256file\nReads file (defined by filename or filehandle) content, and returns its BLAKE2s256 digest\nencoded as a binary string.\n\n$blake2s256raw = blake2s256file('filename.dat');\n#or\n$blake2s256raw = blake2s256file(*FILEHANDLE);\n\nblake2s256filehex\nReads file (defined by filename or filehandle) content, and returns its BLAKE2s256 digest\nencoded as a hexadecimal string.\n\n$blake2s256hex = blake2s256filehex('filename.dat');\n#or\n$blake2s256hex = blake2s256filehex(*FILEHANDLE);\n\nBEWARE: You have to make sure that the filehandle is in binary mode before you pass it as\nargument to the addfile() method.\n\nblake2s256fileb64\nReads file (defined by filename or filehandle) content, and returns its BLAKE2s256 digest\nencoded as a Base64 string, with trailing '=' padding.\n\n$blake2s256b64 = blake2s256fileb64('filename.dat');\n#or\n$blake2s256b64 = blake2s256fileb64(*FILEHANDLE);\n\nblake2s256fileb64u\nReads file (defined by filename or filehandle) content, and returns its BLAKE2s256 digest\nencoded as a Base64 URL Safe string (see RFC 4648 section 5).\n\n$blake2s256b64url = blake2s256fileb64u('filename.dat');\n#or\n$blake2s256b64url = blake2s256fileb64u(*FILEHANDLE);\n",
            "subsections": []
        },
        "METHODS": {
            "content": "The OO interface provides the same set of functions as Crypt::Digest.\n\nnew\n$d = Crypt::Digest::BLAKE2s256->new();\n\nclone\n$d->clone();\n\nreset\n$d->reset();\n\nadd\n$d->add('any data');\n#or\n$d->add('any data', 'more data', 'even more data');\n\naddfile\n$d->addfile('filename.dat');\n#or\n$d->addfile(*FILEHANDLE);\n\naddbits\n$d->addbits($bitstring);   # e.g. $d->addbits(\"111100001010\");\n#or\n$d->addbits($data, $nbits); # e.g. $d->addbits(\"\\xF0\\xA0\", 16);\n\nhashsize\n$d->hashsize;\n#or\nCrypt::Digest::BLAKE2s256->hashsize();\n#or\nCrypt::Digest::BLAKE2s256::hashsize();\n\ndigest\n$resultraw = $d->digest();\n\nhexdigest\n$resulthex = $d->hexdigest();\n\nb64digest\n$resultb64 = $d->b64digest();\n\nb64udigest\n$resultb64url = $d->b64udigest();\n",
            "subsections": []
        },
        "SEE ALSO": {
            "content": "*   CryptX, Crypt::Digest\n\n*   <https://blake2.net/>\n\n*   <https://tools.ietf.org/html/rfc7693>\n",
            "subsections": []
        }
    },
    "summary": "Crypt::Digest::BLAKE2s256 - Hash function BLAKE2s [size: 256 bits]",
    "flags": [],
    "examples": [],
    "see_also": []
}