Differences

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--- security [2011/05/03 10:30] – created dblume
+++ security [2023/04/12 20:44] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
-===== Security =====
+====== Security ======
+===== Google =====
+Quick links in case you need to verify things:
+  * [[https://myaccount.google.com/security?pli=1|Security Home]]
+  * [[https://security.google.com/settings/security/permissions|Connected Apps]]
+  * [[https://security.google.com/settings/security/apppasswords|One time app passwords]]
+===== General Security =====
+[[http://www.shamusyoung.com/twentysidedtale/?p=11523|Shamus attempts to explain hashing]] then [[http://codahale.com/how-to-safely-store-a-password/|Use bcrypt to store passwords]].
+Consider [[http://code.google.com/p/py-bcrypt/|py-bcrypt]] at code.google.  No documentation there, yet. [[http://www.mindrot.org/projects/py-bcrypt/|Old documentation]].
+At the bottom of this page, is the compiler used to make Python 2.6 and 2.7 [[http://www.microsoft.com/visualstudio/en-us/products/2010-editions/express#Visual_Studio_2008_Express_Downloads|Visual Studio 2008 Express]].
+On Windows, you'll have to make the following change:
+<code>
+$ diff bcrypt_python.c.org bcrypt_python.c
+a71,72
+>       char *password_copy;
+>       char *salt_copy;
+,77c78,79
+<       char *password_copy = strdup(password);
+<       char *salt_copy = strdup(salt);
+---
+>       password_copy = strdup(password);
+>       salt_copy = strdup(salt);
+</code>
+Then you can build it with setup, like so:
+<code>
+c:\Python27\python.exe setup.py build
+</code>
+<code>
+import bcrypt
+# Hash a password for the first time, with a randomly-generated salt
+hashed = bcrypt.hashpw(password, bcrypt.gensalt())
+# gensalt's log_rounds parameter determines the complexity.
+# The work factor is 2**log_rounds, and the default is 12
+hashed = bcrypt.hashpw(password, bcrypt.gensalt(10))
+# Check that an unencrypted password matches one that has
+# previously been hashed
+if bcrypt.hashpw(password, hashed) == hashed:
+    print "It matches"
+else:
+    print "It does not match"
+</code>
-[[http://www.shamusyoung.com/twentysidedtale/?p=11523|Shamus attempts to explain hashing]] then [[http://codahale.com/how-to-safely-store-a-password/|Use bcrypt to store passwords]].
 Never use passwords whose unsalted MD5 hash can be looked up here: [[http://md5.gromweb.com/]]
-[[http://eli.thegreenplace.net/2010/06/25/aes-encryption-of-files-in-python-with-pycrypto/|AES encryption of files in Python with PyCrypto]]
+[[http://eli.thegreenplace.net/2010/06/25/aes-encryption-of-files-in-python-with-pycrypto/|AES encryption of files in Python with PyCrypto]]. Note that pycrypto-2.3 can be built with the same ''c:\Python27\python.exe setup.py build'' mechanism.
+Someone suggested [[wp>Whirlpool_(cryptography)]], it's offered in [[http://labix.org/python-mhash|mhash]], and a pure-python implementation from Bjorn Edstrom <be@bjrn.se> 16 december 2007 is here [[http://www.bjrn.se/code/whirlpoolpy.txt]].
+==== Verification ====
+Maybe I should try to automate a way to verify the SHA1 Checksums of PGP signatures and upon success, verify the PHP signatures.  Here's an old recipe: [[http://dannyman.toldme.com/2007/03/30/howto-verify-pgp-signature/|HOWTO: Verify a PGP Signature]].
-Someone suggested [[wp>Whirlpool_(cryptography)]]
+**Keywords**: crypt, cryptography pgp sha