Mailman 3 February 2017 - Cryptography-dev

Getting Error when updating field on DB with encoded base64 string
by Salvador Munguia Feb. 24, 2017

Feb. 24, 2017

It works when I encrypt and decode from string in same script, but when sent to DB looks like error with base64 encoding. Error: Traceback (most recent call last): File "tmp2.py", line 82, in <module> main(1) File "tmp2.py", line 73, in main string = getCode(id,'ev_details') File "tmp2.py", line 23, in getCode result = base64.b64decode(row[0]) File "/usr/lib/python2.7/base64.py", line 76, in b64decode raise TypeError(msg) TypeError: Incorrect padding Script: #!/usr/bin/python import zlib,MySQLdb,os,sys,urllib,re import os,hashlib,base64 from cryptography.fernet import Fernet from cryptography.hazmat.backends import default_backend from cryptography.hazmat.primitives import hashes from cryptography.hazmat.primitives.kdf.pbkdf2 import PBKDF2HMAC from Crypto.Cipher import AES from pbkdf2 import PBKDF2 conn = MySQLdb.connect (host = "localhost", user = "root", passwd = "pass", db = "db") def getCode(id,tbl): sql = "SELECT `details` FROM %s WHERE `id` = %s;" % (tbl,id) # print sql cursor = conn.cursor () cursor.execute (sql) row = cursor.fetchone () result = base64.b64decode(row[0]) # return row[0] return result def getEncrypt(id,tbl): sql = "SELECT `encrypted` FROM %s WHERE `id` = %s;" % (tbl,id) # print sql cursor = conn.cursor () cursor.execute (sql) row = cursor.fetchone () result = base64.b64decode(row[0]) # result = row[0] return result def encryptMAIN(data,fun): password = b"This is the password!" # salt = os.urandom(16) kdf = PBKDF2HMAC( algorithm=hashes.SHA256(), length=32, salt='42$ahasdkjfha', iterations=100000, backend=default_backend() ) key = base64.urlsafe_b64encode(kdf.derive(password)) f = Fernet(key) if(fun == 'encrypt'): return f.encrypt(b"%s" % (data)) else: return f.decrypt(data) def encryptDATA(data): cipher = encryptMAIN(data,'encrypt') return cipher def decryptDATA(data): decoded = encryptMAIN(data,'') return decoded def insertBin(id,data): data = '%s' % (data) sql = "UPDATE `sec_details` set `encrypted` = '%s' WHERE `id` = %s;" % (data, id) # print sql cursor = conn.cursor () cursor.execute (sql) conn.commit() return 1 def main(id): string = getCode(id,'ev_details') e_out = encryptMAIN(string,'encrypt') insertBin(id,e_out) print "Original Data: " + string string = getEncrypt(id,'sec_details') print "Encrypted Data: " + string dout = encryptMAIN(string,'') print "Decrypted Data: " + dout main(1)

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Getting Error message when trying to decrypt a message
by Salvador Munguia Feb. 22, 2017

Feb. 22, 2017

Original Data: gAAAAABYrP0tuwZsZ2D5v-r7O6NyGDpp3-TeiEwGRy-HCZg6eWWzfGpr0teeZ3iOeI7YQlfE-xNr1cZLRUVQj2rgNcNS6rbJ Encrypted Data: gAAAAABYrdhsLhqsuFlsPn72AvzwXAT-_wJDQIIOzl5oFyoPzSrmmDbURiPRdTDfc_FqlOpTO0zGmedlyeY8xJp1_0D-2dwOh8VUs-0ncH604Zc38LKg7eZBJgIvSAByWMzJ-HagvTIC2FzQZW7xSJbHgXaI-p6kvbOKrRcZiwLvwyZOCJ1ivyrj1kDpx06-jTLgZVD4VsWE7gHwQo2o4mj1_HtMRZevoA== Traceback (most recent call last): File "tmp2.py", line 49, in <module> dout = encryptMAIN(e_out,'') File "tmp2.py", line 31, in encryptMAIN return f.decrypt(data) File "/usr/lib/python2.7/dist-packages/cryptography/fernet.py", line 110, in decrypt raise InvalidToken cryptography.fernet.InvalidToken This is the code I am using: #!/usr/bin/python import zlib,MySQLdb,os,sys,urllib,re import os,hashlib,base64 from cryptography.fernet import Fernet from cryptography.hazmat.backends import default_backend from cryptography.hazmat.primitives import hashes from cryptography.hazmat.primitives.kdf.pbkdf2 import PBKDF2HMAC from Crypto.Cipher import AES from pbkdf2 import PBKDF2 def encryptMAIN(data,fun): password = b"this is the password!" salt = os.urandom(16) kdf = PBKDF2HMAC( algorithm=hashes.SHA256(), length=32, salt=salt, iterations=100000, backend=default_backend() ) key = base64.urlsafe_b64encode(kdf.derive(password)) f = Fernet(key) if(fun == 'encrypt'): return f.encrypt(b"%s" % (data)) else: return f.decrypt(data) def encryptDATA(data): cipher = encryptMAIN(data,'encrypt') return cipher def decryptDATA(data): decoded = encryptMAIN(data,'') return decoded string = "gAAAAABYrP0tuwZsZ2D5v-r7O6NyGDpp3-TeiEwGRy-HCZg6eWWzfGpr0teeZ3iOeI7YQlfE-xNr1cZLRUVQj2rgNcNS6rbJ" e_out = encryptMAIN(string,'encrypt') print "Original Data: " + string print "Encrypted Data: " + e_out dout = encryptMAIN(e_out,'') print "Decrypted Data: " + d_out

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install cryptography by source code
by tanhao001＠ulic.com.cn Feb. 18, 2017

Feb. 18, 2017

Hi，I'm tring to install cryptography by source code on a redhat 6.6 server myself, for I can not use the `pip install` commond in a local network. Firstly, I installed openssl-1.0.2k by source code. ``` ./config -fPIC shared --prefix=/ulic/devops/ops/softs/ssl --openssldir=/ulic/devops/ops/softs/ssl/openssl ``` Then I tried to install cryptography-1.7.2 by source code. ``` export PKG_CONFIG_PATH=/ulic/devops/ops/softs/ssl/lib/pkgconfig export LD_LIBRARY_PATH=/ulic/devops/ops/softs/ssl/lib python setup.py build python setup.py install ``` But it seemed that it does't work and it stucked here. ``` .... building '_openssl' extension gcc -pthread -fno-strict-aliasing -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -I/home/zabbix/python3.6/include/python3.6m -c build/temp.linux-x86_64-3.6/_openssl.c -o build/temp.linux-x86_64-3.6/build/temp.linux-x86_64-3.6/_openssl.o build/temp.linux-x86_64-3.6/_openssl.c:485:25: error: openssl/cms.h: No such file or directory build/temp.linux-x86_64-3.6/_openssl.c:680: error: function definition declared ‘typedef’ build/temp.linux-x86_64-3.6/_openssl.c:680: warning: return type defaults to ‘int’ build/temp.linux-x86_64-3.6/_openssl.c: In function ‘LHASH_OF’: ... ``` The cms.h file is in /ulic/devops/ops/softs/ssl/include/openssl/cms.h. And I think the setup.py can not find it correctly. Did anyone know how to deal with it. Thank you very much!

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Failed: Cryptography (a39b20d6)
by Read the Docs Feb. 14, 2017

Feb. 14, 2017

Build Failed for Cryptography (latest) You can find out more about this failure here: https://readthedocs.org/projects/cryptography/builds/5023114/ If you have questions, a good place to start is the FAQ: https://docs.readthedocs.org/en/latest/faq.html Keep documenting, Read the Docs -- http://readthedocs.org

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Failed: Cryptography (bd7cd2d4)
by Read the Docs Feb. 14, 2017

Feb. 14, 2017

Build Failed for Cryptography (latest) You can find out more about this failure here: https://readthedocs.org/projects/cryptography/builds/5022902/ If you have questions, a good place to start is the FAQ: https://docs.readthedocs.org/en/latest/faq.html Keep documenting, Read the Docs -- http://readthedocs.org

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Failed: Cryptography (latest)
by Read the Docs Feb. 11, 2017

Feb. 11, 2017

Build Failed for Cryptography (latest) You can find out more about this failure here: https://readthedocs.org/projects/cryptography/builds/5013987/ If you have questions, a good place to start is the FAQ: https://docs.readthedocs.org/en/latest/faq.html Keep documenting, Read the Docs -- http://readthedocs.org

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