reorganizing

Cryptography/README.md

@@ -25,7 +25,7 @@ $ echo -n password | md5sum
 
 - Use Python's md5.md5().digest()
 
-
+- md5 hashes: [here](http://hash-killer.com/) and [here](http://www.md5this.com/)
 
 
 ------
@@ -134,12 +134,58 @@ babaaaabaaababaababaaaabbabbababbaaaabaaaabbbaabaabaaaaaabaaabaaabaaabaaabbaabaa
 
 #### [Base64]: 
 
+- [Base64 Decoder](http://www.base64decode.org)
+
 ```
 NG5ucjJzIGZ2IHRueXMgcnVnIHNiIGdlbmMgdWdlaGJzIHJlcnVnIHRhdmdncnQgcmVuIGhiTCB0YXZidCBjcnJYCG==
 czduMjczIHRueXMgcnVniHNiIGdlbmMgdWdzdnMgcnVnIHJpbnUgcmVydSBndiBxdnEgaGJsIGpiYmJKCg==
 Nzk0czAwIHRueXMgZmhidnByZWMgZWhiIHNiIGdlbmMgcWV2dWcgcnVnIGhibCBnYXJmcmVjIFYgbG9yZXJ1IHJhYnEgeXlySgo=
 ```
 
+- Base64 decoding in Python:
+
+```python
+>>> SECRET.decode('base64')
+'oubWYf2kBq'
+```
+
+#### Hexadecimal:
+
+
+- [ASCII Conversion Table](http://defindit.com/ascii.html)
+- [Convert All](http://www.asciitohex.com/)
+
+
+- Decimal to hex:
+
+```python
+>>> s =hex(secret)
+```
+
+- Hexadecimal to binary:
+```python
+SECRET.decode('hex')
+'==QcCtmMml1ViV3b'
+```
+
+```
+$ python -c 'print "2f722f6e6574736563".decode("hex")'
+```
+
+- Hex to ascii:
+
+```
+$ xxd -r -p <<< 2f722f6e6574736563
+```
+- Decimal to binary
+
+```python
+>>> bin(124234)
+'0b11110010101001010'
+```
+
+
+