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Diffstat (limited to 'docs/lib/passlib.hash.crypt16.rst')
| -rw-r--r-- | docs/lib/passlib.hash.crypt16.rst | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/docs/lib/passlib.hash.crypt16.rst b/docs/lib/passlib.hash.crypt16.rst index 9fd2a21..2cdd5eb 100644 --- a/docs/lib/passlib.hash.crypt16.rst +++ b/docs/lib/passlib.hash.crypt16.rst @@ -32,12 +32,13 @@ Format An example hash (of the string ``passphrase``) is ``aaX/UmCcBrceQ0kQGGWKTbuE``. A crypt16 hash string has the format :samp:`{salt}{checksum_1}{checksum_2}`, where: -* :samp:`{salt}` is the salt, stored as a 2 character :func:`hash64 <passlib.utils.h64.encode_int12>`-encoded - 12-bit integer (``aa`` in the example). +* :samp:`{salt}` is the salt, stored as a 2 character + :data:`hash64 <passlib.utils.h64>`-encoded 12-bit integer (``aa`` in the + example). * each :samp:`{checksum_i}` is a separate checksum, stored as an 11 character - :func:`hash64 <passlib.utils.h64.encode_dc_int64>`-encoded 64-bit integer (``X/UmCcBrceQ`` and ``0kQGGWKTbuE`` - in the example). + :data:`hash64-big <passlib.utils.h64big>`-encoded 64-bit integer + (``X/UmCcBrceQ`` and ``0kQGGWKTbuE`` in the example). .. rst-class:: html-toggle @@ -48,8 +49,8 @@ The crypt16 algorithm uses a weakened version of the des-crypt algorithm: 1. Given a password string and a salt string. 2. The 2 character salt string is decoded to a 12-bit integer salt value; - The salt string uses little-endian - :func:`hash64 <passlib.utils.h64.decode_int12>` encoding. + The salt string uses little-endian :data:`hash64 <passlib.utils.h64>` + encoding. 3. If the password is larger than 16 bytes, the end is truncated to 16 bytes. If the password is smaller than 16 bytes, the end is NULL padded to 16 bytes. @@ -63,16 +64,16 @@ The crypt16 algorithm uses a weakened version of the des-crypt algorithm: starting with a null input block, and using the 56-bit integer from step 4 as the DES key. - The salt value from step 2 is used to to mutate the normal - DES encrypt operation by swapping bits :samp:`{i}` and :samp:`{i}+24` - in the DES E-Box output if and only if bit :samp:`{i}` is set in + The salt value from step 2 is used to to mutate the normal + DES encrypt operation by swapping bits :samp:`{i}` and :samp:`{i}+24` + in the DES E-Box output if and only if bit :samp:`{i}` is set in the salt value. 6. The 64-bit result of the last round of step 5 is then lsb-padded with 2 zero bits. 7. The resulting 66-bit integer is encoded in big-endian order - using the :func:`hash 64 <passlib.utils.h64.encode_int>` format. + using the :data:`hash64-big <passlib.utils.h64big>` format. This is the first checksum segment. 8. The second checksum segment is created by repeating |